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marvell. moving forward faster doc. no. mv-s102944-00, rev. e january 21, 2008 document classification: proprietary cover 88pl810/88pl815/88pl830 high current, adjustable 8 level ldo regulator datasheet
document conventions note: provides related information or information of special importance. caution: indicates potential damage to hardware or software, or loss of data. warning: indicates a risk of personal injury. document status doc status: 1.00 technical publication: 0.xx for more information, visit our website at: www.marvell.com disclaimer no part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, including phot ocopying and recording, for any purpose, without the express written permission of marvell. marvell retains the right to make changes to this document at any time, with out notice. marvell makes no warranty of any kind, expressed or implied, with regard to any information contained in this document, including, but not limited to, the impli ed warranties of merchantability or fitness for any particular purpose. further, marvell does not warrant the accuracy or completeness of the information, text, graphics, or other items contained within this document. marvell products are not designed for use in life-support equipment or applications that would cause a life-threatening situati on if any such products failed. do not use marvell products in these types of equipment or applications. with respect to the products described herein, the user or recipient, in the absence of appropriate u.s. government authorizati on, agrees: 1) not to re-export or release any such information consisting of technology, software or source code controlled for national s ecurity reasons by the u.s. export control regulations ("ear"), to a national of ear country groups d:1 or e:2; 2) not to export the direct product of such technology or such software, to ear country groups d:1 or e:2, if such technology o r software and direct products thereof are controlled for national security reasons by the ear; and, 3) in the case of technology controlled for national security reasons under the ear where the direct product of the technology is a complete plant or component of a plant, not to export to ear country groups d:1 or e:2 the direct product of the plant or major component thereof, if such direct produ ct is controlled for national security reasons by the ear, or is subject to controls under the u.s. munitions list ("usml"). at all times hereunder, the recipient of any such information agrees that they shall be deemed to have manually signed this doc ument in connection with their receipt of any such information. copyright ? 2008. marvell international ltd. all rights reserved . marvell, the marvell logo, moving forward faster, alaska, fas twriter, datacom systems on silicon, libertas, link street, netgx, phyadvantage, prestera, raising the technology bar, the technology within, virtual cable tester, and yukon are registered trademarks of marvell. ants, anyvoltage, discovery, dsp switcher, feroceon, galnet, galt is, horizon, marvell makes it all possible, radlan, unimac, an d vct are trademarks of marvell. all other trademarks are the property of their respective owners. 88pl810/88pl815/88pl830 datasheet doc. no. mv-s102944-00 rev. e copyright ? 2008 marvell page 2 document classification: proprietary january 21, 2008, 1.00
table of contents copyright ? 2008 marvell doc. no. mv-s102944-00 rev. e january 21, 2008, 1.00 document classification: proprietary page 1 table of contents table of contents .............................................................................................................. ......................... 1 list of tables ................................................................................................................. ............................. 1 list of figures................................................................................................................ ............................. 1 1 signal description ............................................................................................................ ............. 5 1.1 pin configuration........................................................................................................... ....................................5 1.2 pin description ............................................................................................................. .....................................6 1.2.1 pin types................................................................................................................. ...........................6 2 electrical specificati ons ..................................................................................................... .......... 7 2.1 absolute maximum ratings ......... ........................................................................................... ..........................7 2.2 recommended operating conditions ............. .............. .............. .............. .............. ........... ............ ...................7 2.3 electrical characteristics ............................ ...................................................................... .................................8 3 functional description........................................................................................................ ........ 11 3.1 output voltage ? anyvoltage? te chnology..................................................................................... ..............12 3.2 soft start .................................................................................................................. .......................................13 3.3 hiccup current limit..................................... ................................................................... ................................14 3.4 output capacitor (cout) selection................... ........................................................................ .....................15 3.5 input capacitor ............................................................................................................. ...................................15 3.6 enable ...................................................................................................................... .......................................15 3.7 minimum load current........................................................................................................ ............................15 3.8 undervoltage lockout (uvlo) ................................................................................................. .......................16 3.9 thermal shutdown ............................................................................................................ ..............................16 3.10 thermal considerations ..................................................................................................... .............................17 4 functional characteristics .................................................................................................... ..... 19 5 typical characteristics ........ ............................................................................................... ........ 21 5.1 ic case and board temperature ... .............. .............. .............. .............. .............. ............ .......... .....................21 6 mechanical drawings ........................................................................................................... ....... 25 6.1 mechanical dimensions ....................................................................................................... ...........................25 6.1.1 msop-8 package ............................................................................................................ .................25 6.1.2 5x5mm qfn-5l package ...................................................................................................... ...........27 6.2 typical pad layout dimensions ............................................................................................... .......................29 7 ordering information.......................................................................................................... ......... 33 7.1 ordering part numbers and package markings......... ......................................................................... ............33
88pl810/88pl815/88pl830 datasheet doc. no. mv-s102944-00 rev. e copyright ? 2008 marvell page 2 document classification: proprietary january 21, 2008, 1.00 7.2 sample ordering part number................................................................................................. .......................33 7.3 package markings............................................................................................................ ...............................34 7.3.1 5 x 5 qfn-5 package marking ............................................................................................... ..........34 7.3.2 3 x 3 msop-8 package marking .............................................................................................. ........34 a revision history .............................................................................................................. ............ 35
list of tables copyright ? 2008 marvell doc. no. mv-s102944-00 rev. e january 21, 2008, 1.00 document classification: proprietary page 1 list of tables table 1: product table .......................................................................................................... ...........................5 table 2: pin type definitions ....... ............................................................................................ .........................6 table 4: absolute maximum ratings ......................... ...................................................................... .................7 table 5: recommended operating condit ions............. .............. .............. .............. ........... ............ ......... ..........7 table 6: electrical characteristics ........................ ..................................................................... .......................8 table 7: output voltage ......................................................................................................... .........................12 table 8: recommended capacitors ....... .............. .............. .............. .............. ........... ........... ............ ..............15 table 9: msop-8l dimensions ..................................................................................................... .................26 table 10: 5x5mm qfn-5l dimensions ............................................................................................... .............28 table 11: order samples table................................................................................................... .....................33 table 12: revision history ...................................................................................................... ..........................35
88pl810/88pl815/88pl830 datasheet doc. no. mv-s102944-00 rev. e copyright ? 2008 marvell page 2 document classification: proprietary january 21, 2008, 1.00
list of figures copyright ? 2008 marvell doc. no. mv-s102944-00 rev. e january 21, 2008, 1.00 document classification: proprietary page 1 list of figures figure 1: typical ldo regulator ........................... ...................................................................... ......................3 figure 2: 3x3mm msop-8 - top view ............................................................................................... ................5 figure 3: 5x5mm qfn-5 - top view ................................................................................................ ..................5 figure 4: 88pl810/88pl815/88pl830 simplif ied block diagram......... .............. .............. ........... ........... .........11 figure 5: startt-up sequence .................................................................................................... ......................12 figure 6: vset voltage steps for 2.5v output.............. .............. .............. .............. .............. .............. ............12 figure 7: rise time with cout = 10mf............................................................................................ ..............13 figure 8: rise time with cout = 1000mf.......................................................................................... ............13 figure 9: hiccup period ......................................................................................................... ..........................14 figure 10: current limit response time .......................................................................................... .................14 figure 11: startt-up using the enable pin ....................................................................................... ..................19 figure 12: turn off using the enable pin ........................................................................................ ..................19 figure 13: input voltage soft start............................................................................................. ........................19 figure 14: input voltage hot plug ............................................................................................... .......................19 figure 15: uvlo thresholds ...................................................................................................... .......................20 figure 16: load transient response.............................................................................................. ...................20 figure 17: 5x5mm qfn-5l package ................................................................................................. ................21 figure 18: input voltage graphs................................................................................................. .......................22 figure 19: temperature graphs ................................................................................................... .....................23 figure 20: temperature graphs (cont inued).............. .............. .............. ........... ........... ........... ............ ..............24 figure 21: 88pl810/88pl815/88pl830 msop mechanical dimensions ............... ............ ........... ........... .........25 figure 22: 88pl810/88pl815/88pl830 5x5mm qfn-5l mec hanical dimensions ............ ........... ........... .........27 figure 23: recommended solder pad layout for msop-8 ...... .............. .............. ........... ........... ........... .......... ..29 figure 24: recommended solder pad layout for qfn-5 ...... .............. .............. ........... ........... ............ .......... ....30 figure 25: ordering part numbers and package markings ... ........................................................................ ....33 figure 26: package marking and pin 1 location for 5 x 5 mm qfn-5 ...............................................................34 figure 27: package marking and pin 1 location for 3 x 3 mm msop-8 ............................................................34
88pl810/88pl815/88pl830 datasheet doc. no. mv-s102944-00 rev. e copyright ? 2008 marvell page 2 document classification: proprietary january 21, 2008, 1.00
88pl810/88pl815/88pl830 high current, adjustable 8 level ldo regulator datasheet copyright ? 2008 marvell doc. no. mv-s102944-00 rev. e january 21, 2008, 1.00 document classification: proprietary page 3 product overview the 88pl810/88pl815/88pl830 family of devices are high current ultra-low-dropout linear (ldo) regulators, featuring up to 235mv at 3a dropout voltage and very low ground current. quiescent current is typically 1.5ma and drops to 0.1a in shutdown. the devices protect themselves from short circuit conditions by turning off for about 6ms and on ("hiccup"), thereby limiting temperature rise. in "hot -swap" applications, no additional circuitry is requ ired since these devices have an integrated "soft start" mode. additionally, a unique output voltage programming technique is used to provide eight output voltage options. the whole 88pl810/15/30 family?s output voltage can be adjusted to 8 different levels between 2.4v and 2.75v (2% or 50mv per step), for an input voltage range of 2.7v to 3.6v. this voltage is defined by the user with a single external resistor (r vset). the 88pl810 device is adjustable in 30mv steps and the 88pl815 device is adjustable in 36mv steps. the 88pl810/88pl815/88pl830 devices are stable with a 10f ceramic output capacitor. however, any other type of capacitor up to 1000f can be placed in parallel with it as long as the 10f ceramic output capacitor is placed next to the 88pl810/88pl815/88pl830. features ? 88pl810: 1.5v/1.0a; 88pl815 : 1.8v/1.5a; 88pl830: 2.5v/3.0a ? ultra-low dropout (235mv @ 3a typ.) ? input voltage range 2.7v to 3.6v ? one resistor sets the output voltage level ? fixed soft start ramp with any output capacitor up to 1000f ? "hiccup" short circuit protection ? stable with ceramic output capacitors ? adjustable 8 level, programmable output voltage in 2% steps ? logic controlled shutdown ? 0.1a supply current in shutdown ? stable with 0a load current ? lead-free msop-8l and qfn-5l packages ? -40c to +125c junction temperature range applications ? adjustable linear regulator for low-voltage digital ics ? pc add-in cards ? backup power supplies and 3.3v pci express bus figure 1: typical ldo regulator vin vout vin 4 tab ep vset 1 vout 2 gnd 3 en 5 88pl830 10uf/6.3v 10uf/6.3v disable ena ble c2 c1 2.5v/3a 3.3v
88pl810/88pl815/88pl830 datasheet doc. no. mv-s102944-00 rev. e copyright ? 2008 marvell page 4 document classification: proprietary january 21, 2008, 1.00 this page intentionally left blank
signal description pin configuration copyright ? 2008 marvell doc. no. mv-s102944-00 rev. e january 21, 2008, 1.00 document classification: proprietary page 5 1 signal description 1.1 pin configuration figure 2: 3x3mm msop-8 - top view figure 3: 5x5mm qfn-5 - top view table 1: product table product number output voltage output current 88pl830 2.40, 2.45, 2.50 , 2.55, 2.60, 2.65, 2.70, 2.75 3.0a 88pl815 1.728, 1.764, 1.80, 1.836, 1.872, 1.908, 1.944, 1.980 1.5a 88pl810 1.44, 1.47, 1.50, 1.53, 1.56, 1.59, 1.62, 1.65 1.0a
88pl810/88pl815/88pl830 datasheet doc. no. mv-s102944-00 rev. e copyright ? 2008 marvell page 6 document classification: proprietary january 21, 2008, 1.00 1.2 pin description 1.2.1 pin types this section provides the pin description of th e 88pl810/88pl815/88pl830 devices. table 2 shows the pin types used in table 3. table 2: pin type definitions pin type definition i input only o output only s supply nc not connected gnd ground table 3: pin description 5x5 qfn-5 pin # 3x3 msop-8 pin # pin name pin type pin function 5 1, 2 pvin s input voltage: input voltage supplies current to output. connect a 10 f decouple capacitor (cin) between this pin and gnd pin. 4 3 en i enable: cmos compatible input. logic low = disable, logic high = enable. 3 4 gnd gnd ground: tab is connected to gnd. 1 5 vset voltage setting: connect to an external resistor that is connected to ground to set the output voltage of the resistor. the total capacitance across this pin and gnd should be less than 25pf. use a resistor with tolerance better than 2%. if this pin is connected to gnd, the output voltage will be set to 2.5v. if this pin is pvin, the output voltage will be set to 3.3v. do not float this pin. 2 6, 7, 8 vout o output voltage: adjustable regulator output. a 10 f capacitor is connected between this pin and the gnd pin.
electrical specifications absolute maximum ratings copyright ? 2008 marvell doc. no. mv-s102944-00 rev. e january 21, 2008, 1.00 document classification: proprietary page 7 2 electrical specifications 2.1 absolute maximum ratings 2.2 recommended operating conditions table 4: absolute maximum ratings 1 1. exceeding the absolute the maximum rating may damage the device. parameter symbol range units input voltage to gnd v in -0.6 to 4.2 v enable voltage (v en ) to gnd v en -0.6 to max (v in + 0.6, 4.2) v voltage set to gnd v set -0.6 to max (v in + 0.6, 4.2) v output voltage to gnd v out -0.6 to max (v in + 0.6, 4.2) v operating temperature range 2 2. specifications over the -40 c to 85 c operating temperature ranges are assu red by design, characterization and correlation with statistical process controls. t op -40 to 85 c storage temperature range t stor -65 to 150 c maximum junction temperature t jmax 150 c esd rating 3 3. devices are esd sensitive. handling prec autions recommended. human body model, 1.5k ? , in series with 100pf. 2kv table 5: recommended operating conditions 1 1. this device is not guaranteed to f unction outside the specified operating range parameter symbol range units input voltage v in 2.7 to 3.6 v msop package thermal resistance ja 150.88 c/w 5 x 5mm qfn-5l package thermal resistance ja see section 5 c/w maximum operating junction temperature t jmax 125 c
88pl810/88pl815/88pl830 datasheet doc. no. mv-s102944-00 rev. e copyright ? 2008 marvell page 8 document classification: proprietary january 21, 2008, 1.00 2.3 electrical characteristics table 6: electrical characteristics note: the following table applies unless otherwise noted: c in = 10 f; c out = 10 f (ceramic); i out = 10ma; ta = 25 c; v in = 3.3v. bold values indicate -40 c ta 85 c. parameter symbol condition min typ max units input voltage range v in 2.7 3.6 v output voltage accuracy v out 1ma [ iout[ 3a (88pl830) -2 2 % 1ma [ iout [ 1.5a (88pl815) 1ma [ iout [ 1a (88pl810) output voltage load regulation dv out /v out 10ma [ iout [ 3a (88pl830) 0.1 % 10ma [ iout [ 1.5a (88pl815) 10ma [ iout [ 1a (88pl810) output voltage line regulation dv out /v out vin = 3.0v-3.6v, iout = 10 ma 0.01 % dropout voltage (88pl830 only) v in -v out i out = 1a, output voltage variation=1% 75 mv i out = 2a, output voltage variation=1% 156 mv i out = 3a, output voltage variation=1% 235 mv quiescent current (88pl810) i q i out = 0ma 1.0 ma quiescent current (88pl815) 1.2 quiescent current (88pl830) 1.5 shutdown input current i shdn v en = gnd 0.1 50 ma output current limit (88pl810) i out(lim) v out = 1.5v 3.0 a output current limit (88pl815) v out = 1.8v 3.0 output current limit (88pl830) v out = 2.5v 7.0 enable input enable input logic low v en ldo shutdown 1.1 v enable input logic high ldo enable 2.2 v enable pin input current i en v el = 1.1v 1 10 ma v eh = 2.2v 1 10 ma under voltage lockout under voltage lockout v uvlo high threshold (uth), v in increasing 2.60 2.70 v low threshold (utl), v in increasing 2.45 v under voltage lockout hysteresis 150 mv
electrical specifications electrical characteristics copyright ? 2008 marvell doc. no. mv-s102944-00 rev. e january 21, 2008, 1.00 document classification: proprietary page 9 ldo output voltage output voltage (88pl830) r set = 11k ? 2.352 2.40 2.448 v r set = 18.7k ? 2.401 2.45 2.499 v r set = 31.6k ? or 0 ? 2.450 2.50 2.550 v r set = 53.6k ? 2.499 2.55 2.601 v r set = 97.6k ? 2.548 2.60 2.652 v r set = 165k ? 2.597 2.65 2.703 v r set = 280k ? 2.646 2.70 2.754 v r set = 475k ? 2.695 2.75 2.805 v output voltage (88pl815) r set = 11k ? 1.693 1.728 1.763 v r set = 18.7k ? 1.729 1.764 1.799 v r set = 31.6k ? or 0 ? 1.764 1.800 1.836 v r set = 53.6k ? 1.799 1.836 1.873 v r set = 97.6k ? 1.835 1.872 1.909 v r set = 165k ? 1.870 1.908 1.946 v r set = 280k ? 1.905 1.944 1.983 v r set = 475k ? 1.940 1.980 2.020 v output voltage (88pl810) r set = 11k ? 1.411 1.44 1.469 v r set = 18.7k ? 1.441 1.47 1.499 v r set = 31.6k ? or 0 ? 1.470 1.50 1.530 v r set = 53.6k ? 1.499 1.53 1.561 v r set = 97.6k ? 1.529 1.56 1.591 v r set = 165k ? 1.558 1.59 1.622 v r set = 280k ? 1.588 1.62 1.652 v r set = 475k ? 1.617 1.65 1.683 v soft start start-up time (88pl830) t ss v out = 2.5v 3 ms start-up time (88pl815) v out = 1.8v 2.2 start-up time (88pl810) v out = 1.5v 2.1 low drop out auto-restart ldo auto-restart 1 time to restart after current limit shut down 630ms over temperature protection over-temperature protection t ot t j increasing (disable ic) 150 c t j decreasing (enable ic) 120 c 1. specifications over the -40c to 85c operating temper ature ranges are assured by design, characterization, and correlation with statistical process controls. table 6: electrical characteristics note: the following table applies unless otherwise noted: c in = 10 f; c out = 10 f (ceramic); i out = 10ma; ta = 25 c; v in = 3.3v. bold values indicate -40 c ta 85 c. parameter symbol condition min typ max units
88pl810/88pl815/88pl830 datasheet doc. no. mv-s102944-00 rev. e copyright ? 2008 marvell page 10 document classification: proprietary january 21, 2008, 1.00 this page intentionally left blank
functional description copyright ? 2008 marvell doc. no. mv-s102944-00 rev. e january 21, 2008, 1.00 document classification: proprietary page 11 3 functional description figure 4: 88pl810/88pl815/88pl830 simplified block diagram vset thermal shutdown 150 c vin 2.7v to 3.6v en c2 r1 on off gnd hiccup current limit - + under- voltage lock-out band-gap voltage reference & softstart resistor sensing circuitry c1 vout
88pl810/88pl815/88pl830 datasheet doc. no. mv-s102944-00 rev. e copyright ? 2008 marvell page 12 document classification: proprietary january 21, 2008, 1.00 3.1 output voltage ? anyvoltage ? technology for 88pl830, the output voltage is set by using a single resistor (r vset ) to provide eight output voltage options from 2.40v to 2.75v in 50mv steps (see table 4). the rresistor is only read once during start-up before the output voltage is turn ed on; therefore, the ou tput voltage cannot be changed on-the-fly. to configure the output to a di fferent voltage either power has to recycle or the enable input has to turn off and back on. figure 3 shows the startup sequence of the 88pl830. once the input voltage (v in ) is above the under voltage lockout (uvlo) upper threshold (uth) of 2.65v, the vset pin becomes active. current is sourced out of this pin in exponentia lly increasing steps. afte r each step there is a blanking time before the vset vo ltage is compared to an intern al 1.2v reference. if the vset voltage is below this reference vo ltage, the current source proceeds to the next set. once the vset voltage is above the reference voltage the sequen ce stops and the output voltage (vout) is allowed to turn-on. figure 4 shows the v set waveform for a 2.5v output. the 88pl830 keeps track of how many steps were required to determine the appropria te output voltage. table 4 provides the number of steps necessary for each output voltage option. using a 31.6k ? resistor requires the current source to step 7 times, see figure 4. table 7: output voltage step v out 88pl830 (v) v out 88pl815 (v) v out 88pl810 (v) r vset (k ? ) 1 2.50 1.80 1.50 0 2 2.75 1.980 1.65 475 3 2.70 1.944 1.62 280 4 2.65 1.908 1.59 165 5 2.60 1.872 1.56 97.6 6 2.55 1.836 1.53 53.6 7 2.50 1.80 1.50 31.6 8 2.45 1.764 1.47 18.8 9 2.40 1.728 1.44 11 v out v in v set figure 5: startt-up sequence 2v/div 1v/div 1v/div v set figure 6: v set voltage steps for 2.5v output 0.5v/div 2ms/div 100 s/div
functional description soft start copyright ? 2008 marvell doc. no. mv-s102944-00 rev. e january 21, 2008, 1.00 document classification: proprietary page 13 the 88pl810/88pl815/88pl830 devices provide an inno vative technique to set the output voltage. the output voltage is determined during startup by the device reading the value of an external resistor that is located outside the regula tor's feedback loop. by placing the output voltage-programming resistor outside the regulator's feedback loop, its tolerance does not affect the accuracy of the output voltage. normally, adjustable regulators use 1% resistors to set the output voltage. however, these resistors are located in side the feedback loop, introducing as much as 2% of initial accuracy error to the output voltage, resu lting in an overall initial accuracy of 3%. the 88pl810/88pl815/88pl830 initial accuracy is 2% for any of the eight output voltages. the v set pin is sensitive to excessive leakage current s and stray capacitance. the output voltage can potentially be programmed to the lower output vo ltage if there is contam ination that introduces excessive leakage current on the v set pin, especially for a r vset of 475k ? . the parasitic resistance on the node must be greater than 3m ? and the stray capacitance must be equal to 25pf or less. 3.2 soft start soft start is a highly desirable property in "hot -swap" applications. most ldos start-up within 100 s, producing large inrush currents on the input power supply. the 88pl810/88pl815/88pl830 device controls the rise time of the out put voltage, thereby dramatically reducing the inrush current. the 88pl830 device rise time is typically 3ms and it is independent of output capacitance and load current. figure 5 shows the rise time with a 10 f output capacitor at 50ma load and figure 6 shows the rise time with a 1000 f output capacitor at 500ma load. even with these extreme loading conditions and different inrush current, the output voltage rise time difference is less than 0.1ms. also note that the output voltage starts at near 0v while other ldo soft start techniques typically start at 1.25v. . v out i in i load = 50ma figure 7: rise time with c out = 10 f 1v/div 100mv/div v out i in i load = 50ma figure 8: rise time with c out = 1000 f 1v/div 500mv/d iv 1ms/div 1ms/div
88pl810/88pl815/88pl830 datasheet doc. no. mv-s102944-00 rev. e copyright ? 2008 marvell page 14 document classification: proprietary january 21, 2008, 1.00 3.3 hiccup current limit the "hiccup" short-circuit protecti on is a feature that is not co mmon among other ldos. when the current-sense circuit sees an over-current co ndition, the 88pl810/88pl815/88pl830 device shuts off for about 6ms and then tries to start up again, see figure 7. if the over-load condition is removed, the 88pl810/88pl815/88pl830 devices will start-up normally; otherwise, the 88pl810/88pl815/88pl830 device will see another over -current event and shut off again, repeating the previous cycle. . hiccup mode protection offers protection against over current situations, since it limits the average current to the load at a low level, reducing power dissipation and case temperature of the ic. the 88pl810/88pl815/88pl830 device case temperature will only rise about 20c and have a case temperature of around 45c at room, reducing the thermal stress on the device. figure 8 shows the response time of the current limit circuitry. t he response time of the protection circuit must be quick enough to prevent damage from overloads, yet allow enough time to response to transient loads without prematur ely tripping the protection circuit. i out figure 9: hiccup period 5a/div i out figure 10: current limit response time 5a/div 2ms/div 200 s/div
functional description output capacitor (cout) selection copyright ? 2008 marvell doc. no. mv-s102944-00 rev. e january 21, 2008, 1.00 document classification: proprietary page 15 3.4 output capacitor (c out ) selection the 88pl810/88pl815/88pl830 device requires a 10 f ceramic output capacitor as part of the frequency compensation. however, any other type of capacitor up to 1000 f can be placed in parallel with it as long as the 10 f ceramic output capacitor is placed next to the 88pl810/88pl815/88pl830 device. addi tional output capacitance furt her improves load-transient response and power supply rejection. x7r and x5r type ceramic capacitors are reco mmended because of their performance over temperature. capacitance of the x7r type ca pacitors changes only 15% over their operating temperature range. y5v and z5u type ceramic capacitors change value by as much as 60% and 50%, respectively, over their operating temperature range. if y5v type ceramic capacitors are used, then higher value capacitor in comparison with x7r and x5r capacitors must be used to ensure a sufficient capacitance value over the operating temperature range. the following capacitors are some of the capacitors recommended to be used with the 88pl810/88pl815/88pl830. 3.5 input capacitor an input capacitor of 1 f or greater is required between th e 88pl810/88pl815/88pl830 device's v in pin and ground. it must be placed as clos e as possible to the 88pl810/88pl815/88pl830 device for stable operation. while 1 f will provide adequate bypassing of the vin supply, larger value input capacitors (10 f) can improve bypassing to handle fast transient response requirements. 3.6 enable the 88pl810/88pl815/88pl830 devices feature an ac tive high enable (en) input that allows on/off control of the device. ne ar "zero" current drain is achi eved when the device is disabled, with only microamperes of leakage current flow. the en input includes ttl/cmos compatible thresholds for simple interfacing with logi c, or that may be directly tied to v in for a constant on state. the enable input must not be left floating; it must be tied either high or low. 3.7 minimum load current the 88pl810/88pl815/88pl830 device, unlike most other high current regulators, does not require a minimum load to maintain output voltage regulation. table 8: recommended capacitors manufacturer part number dielectric capacitance ( f) voltage (v) case size (inch) max height (mm) murata grm188r60g106m x5r 10 4.0 0603 0.9 murata grm219r60j106k x5r 10 6.3 0805 0.95 murata grm21br60j106k x5r 10 6.3 0805 1.35 taiyo-yuden ce jmk212bj106mg-t x5r 10 6.3 0805 1.40 tdk c2012x5r0j106mt x5r 10 6.3 0805 1.55
88pl810/88pl815/88pl830 datasheet doc. no. mv-s102944-00 rev. e copyright ? 2008 marvell page 16 document classification: proprietary january 21, 2008, 1.00 3.8 undervoltage lockout (uvlo) the 88pl810/88pl815/88pl830 incorporates undervo ltage-lockout circuitry to disable the ldo when the input voltage is below 2.45v (typical). the ldo is enabled when the input voltage is above 2.60v (typical). 3.9 thermal shutdown when the junction temperature of the 88 pl810/88pl815/88pl830 device exceeds 150 c (typical), the thermal shutdown circuitry disables the ldo. the ldo is enabled when the junction temperature is decreased to 120 c (typical).
functional description thermal considerations copyright ? 2008 marvell doc. no. mv-s102944-00 rev. e january 21, 2008, 1.00 document classification: proprietary page 17 3.10 thermal considerations the power handling capability of the device is limited by the maximum rated junction temperature (125c). the power dissipated by the device is made up of two components: 1. output current multiplied by the differ ential of input and output voltage: (i out ) (v in-vout ). 2. input current into the device (used by internal circuitry in ma) multiplied by the input voltage: (i q )(v in ) the actual power dissipation (p d ) will be the sum of the two components listed above: p d = (i out ) (v in - v out ) + (i q ) (v in ) to determine the maximum power dissipation (p d (max) ) of the package, use the junction-to-ambient thermal resistance ( ja ) of the device and the following equation: where t j (max) is the maximum junction temperature of the die (125 c) and t a (max) is the ambient operating temperature. note that ja is layout dependent. a heat sink effectively increases the surface area of the package to improve the flow of heat away from the ic and into the air. each material in the heat flow between the ic and the outside environment has a thermal resistance. starting from the die, we have jc (junction to case), cs (case to heat sink), and sa (heat sink to ambient). these thermal resistances are added together to determine the total thermal resistance between the die and the air, ja . ja = jc + cs + sa the value for sa is dependent on the heat sink, where the cs is dependent on the package type and contact between heat sink and package. the pr oper heat sink can be selected based on the following equation: the ja can be calculated after the proper heat sink is selected. to prevent the device from entering thermal shut down, the actual power dissipation needs to be equal or less than the maximum power dissipation: p dmax () t jmax () t amax () ? () ja ----------------- ------------------ ----------- = sa t jmax () t amax () ? p dmax () --------------- -------------- ------------ jc cs + () ? = t jmax () t amax () ? ja ------------------------------------------ - i out () v in v out ? ()
88pl810/88pl815/88pl830 datasheet doc. no. mv-s102944-00 rev. e copyright ? 2008 marvell page 18 document classification: proprietary january 21, 2008, 1.00 this page intentionally left blank
functional characteristics copyright ? 2008 marvell doc. no. mv-s102944-00 rev. e january 21, 2008, 1.00 document classification: proprietary page 19 4 functional characteristics the following is used c in = 10 f; c out = 10 f (ceramic); v in =3.3v; v out =2.5v; unless otherwise noted. . . . v out v set en figure 11: startt-up using the enable pin 1v/div 1v/div 2v/div v set en figure 12: turn off using the enable pin 1v/div 2v/div 1ms/div 1ms/div i load = 50 ? i load = 50 ? v in v out v set figure 13: input voltage soft start 1v/div 1v/div 1v/div v in v out v set figure 14: input voltage hot plug 1v/div 1v/div 1v/div 2ms/div 1ms/div i load = no load i load = no load
88pl810/88pl815/88pl830 datasheet doc. no. mv-s102944-00 rev. e copyright ? 2008 marvell page 20 document classification: proprietary january 21, 2008, 1.00 v out v in figure 15: uvlo thresholds 1v/div 1v/div v out i load figure 16: load transient response 20mv/d 1a/div 100ms/div 200 s/div v hth = 2.60v v lth = 2.45v i load = 0.01a to 3.0a c out = 10 f
typical characteristics ic case and board temperature copyright ? 2008 marvell doc. no. mv-s102944-00 rev. e january 21, 2008, 1.00 document classification: proprietary page 21 5 typical characteristics 5.1 ic case and board temperature actual results depend upon the size of the pcb and proximity to other heat emitting components. the following test data used a ? in 2 pcb, 1 oz copper, and 88pl830 part. figure 17: 5x5mm qfn-5l package ic power loss vs. output current vin = 3.3v, vout = 2.5v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 00.511.522.533.5 output current (a) ic ploss (w) 85c 65c 45c 25c ic case temprature vs. output current vin = 3.3v, vout =2.5v 20 40 60 80 100 120 140 160 00.511.522.53 output current (a) ic temprature (c) 85c 65c 45c 25c pcb board & ic temperature vs. power dissipation vin = 3.3v, vout = 2.5v, @ 25c y = 20.783x + 26.905 y = 30.184x + 26.597 20 30 40 50 60 70 80 90 100 110 0.0 0.5 1.0 1.5 2.0 2.5 3.0 ic power loss (w) board temprature (c) pcb_25c ic_25c linear (pcb_25c) linear (ic_25c) ic case temprature vs. power dissipation vin = 3.3v y = 30.184x + 26.597 20 40 60 80 100 120 140 160 0.0 0.5 1.0 1.5 2.0 2.5 3.0 ic power loss (w) ic temprature (c) 85c 65c 45c 25c linear (25c) ic temperature vs. output current vin = 3.3v, @25c 0 20 40 60 80 100 120 00.511.522.53 iout(a) ic temp(c) vout=2.4v vout=2.5v vout=2.6v vout=2.75v dropout vs. load current vin = 2.7, vout = 2.7v 0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.16 0.18 0 0.5 1 1.5 2 output current (a) ldo dropout (v) 85c 25c -40c
88pl810/88pl815/88pl830 datasheet doc. no. mv-s102944-00 rev. e copyright ? 2008 marvell page 22 document classification: proprietary january 21, 2008, 1.00 figure 18: input voltage graphs the following data applies to 88pl830; c in = 10 f; c out = 10 f (ceramic); unless otherwise noted. supply current vs. input voltage 1.2 1.3 1.4 1.5 1.6 2.73.03.33.6 input voltage (v) supply current (ma) output voltage vs. input voltage 2.400 2.450 2.500 2.550 2.600 2.7 3.0 3.3 3.6 input voltage (v) output voltage (v) load regulation vs. input voltage -0.20% -0.10% 0.00% 0.10% 0.20% 2.7 3.0 3.3 3.6 input voltage (v) load regulation (% ) output current lim it vs. input voltage 0.0 2.0 4.0 6.0 8.0 10.0 2.7 3.0 3.3 3.6 input voltage (v) current limit (a) 88pl830 88pl815/10 shutdow n current vs. input voltage 0.0 0.1 0.2 0.3 0.4 2.7 3.0 3.3 3.6 input voltage (v) shutdown current (ua) enable threshold vs. input voltage 1.10 1.20 1.30 1.40 1.50 1.60 1.70 2.7 3.0 3.3 3.6 input voltage (v) enable threshold (v) load = no load v out(ldo) = 2.5v i out(ldo) = 10ma ? 3.0a i out(ldo) = 10ma
typical characteristics ic case and board temperature copyright ? 2008 marvell doc. no. mv-s102944-00 rev. e january 21, 2008, 1.00 document classification: proprietary page 23 figure 19: temperature graphs the following data applies to 88pl830; c in = 10 f; c out = 10 f (ceramic); v in =3.3v; v out =2.5v; unless otherwise noted. supply current vs. temperature 1.2 1.3 1.4 1.5 -40 -20 0 20 40 60 80 temperature (c) supply current (ma) output voltage vs. tem perature 2.425 2.450 2.475 2.500 2.525 2.550 2.575 -40-200 20406080 temperature (c) output voltage (v) load regulation vs. tem perature -0.20% -0.10% 0.00% 0.10% 0.20% 0.30% 0.40% -40-200 20406080 temperature (c) load regulation (%) line regulation vs. temperature -0.30% -0.20% -0.10% 0.00% 0.10% 0.20% -40-200 20406080 temperature (c) line regulation (%) shutdown current vs. temperature 0 0.25 0.5 0.75 1 -40-200 20406080 temperature (c) shutdown current (ua) enable threshold vs. temperature 1.00 1.25 1.50 1.75 2.00 -40-200 20406080 temperature (c) enable threshold (v) i out(ldo) = no load i out(ldo) = 10ma i out(ldo) = 10ma v in = 3.0v ? 3.6v i out(ldo) = 10ma ? 3a
88pl810/88pl815/88pl830 datasheet doc. no. mv-s102944-00 rev. e copyright ? 2008 marvell page 24 document classification: proprietary january 21, 2008, 1.00 figure 20: temperature graphs (continued) the following data applies to 88pl830; c in = 10 f; c out = 10 f (ceramic); v in =3.3v; v out =2.5v; unless otherwise noted. uvlo vs. temperature 2.3 2.4 2.5 2.6 2.7 2.8 -40-20 0 20406080 temperature (c) uvlo (v) current limit vs. temperature 0 1 2 3 4 5 6 7 8 -40-200 20406080 temperature (c) current limit (a) 88pl830 88pl815/10 i out(ldo) = 10ma
mechanical drawings mechanical dimensions copyright ? 2008 marvell doc. no. mv-s102944-00 rev. e january 21, 2008, 1.00 document classification: proprietary page 25 6 mechanical drawings 6.1 mechanical dimensions 6.1.1 msop-8 package figure 21: 88pl810/88pl815/88p l830 msop mechan ical dimensions
88pl810/88pl815/88pl830 datasheet doc. no. mv-s102944-00 rev. e copyright ? 2008 marvell page 26 document classification: proprietary january 21, 2008, 1.00 notes: 3. controlling dimension: mm 4. lead frame material: olin c7025 5. dimension "d" does not include mold flash, tie ba r burrs and gate burrs. mold flash, tie bar burrs and gate burrs shall not exceed 0.006" [0.15m m] per end. dimension "e1" does not include interlead flash. interlead flash shall not exceed 0.010" [0.25mm] per side. 6. dimension "b" does not include dambar protrusi on. allowable dambar protrusion shall be 0.003" [0.08mm] total in excess of the "b" dimension at maximum material condition. dambar cannot be located on the lower radius or the foot. mi nimum space between protrusion and an adjacent lead to be 0.0028" [0.07mm]. 7. tolerance: 60.010" [0.25mm] unless otherwise specified. 8. otherwise dimensions follow acceptable specifications. table 9: msop-8l dimensions symbol dimension in mm dimension in inch min nom max min nom max a 1.10 0.043 a1 0.05 0.15 0.002 0.006 a2 0.76 0.85 0.95 0.030 0.033 0.037 b 0.25 0.30 0.35 0.010 0.012 0.014 c 0.13 0.15 0.23 0.005 0.006 0.09 d 2.90 3.00 3.10 0.114 0.118 0.122 e 4.80 4.90 5.00 0.189 0.193 0.197 e1 2.90 3.00 3.10 0.114 0.118 0.122 e 0.65 0.0256 l 0.40 0.53 0.66 0.016 0.021 0.026 y 0.10 0.004 0 3 6 0 3 6
mechanical drawings mechanical dimensions copyright ? 2008 marvell doc. no. mv-s102944-00 rev. e january 21, 2008, 1.00 document classification: proprietary page 27 6.1.2 5x5mm qfn-5l package figure 22: 88pl810/88pl815/88pl830 5x5mm qfn-5l mechanical dimensions notes: 1. controlling dimension: millimeter 2. refence docume nt: jedec mo-229
88pl810/88pl815/88pl830 datasheet doc. no. mv-s102944-00 rev. e copyright ? 2008 marvell page 28 document classification: proprietary january 21, 2008, 1.00 table 10: 5x5mm qfn-5l dimensions symbol dimension in mm dimension in inch min nom max min nom max a 0.80 0.85 1.00 0.031 0.033 0.039 a1 0.00 0.02 0.05 0.00 0.001 0.002 a2 0.60 0.65 0.50 0.024 0.026 0.031 a3 0.020 ref 0.008 ref b1 0.25 0.30 0.35 0.010 0.012 0.014 b2 0.45 0.50 0.55 0.018 0.020 0.022 d/e 5.00 bsc 0.197 bsc d1/e1 4.95 bsc 0.187 bsc d2a 3.43 3.58 3.73 0.135 0.141 0.147 d2b 2.03 2.18 2.33 0.080 0.086 0.092 e2a 3.90 4.05 4.20 0.154 0.159 0.165 e2b 2.95 3.10 3.25 0.116 0.122 0.128 e 1.00 bsc 0.039 bsc l 0.35 0.55 0.75 0.014 0.022 0.030 k 0.20 0.008 0 12 0 12 aaa 0.15 0.006 bbb 0.10 0.004 ccc 0.10 0.004 ddd 0.05 0.002
mechanical drawings typical pad layout dimensions copyright ? 2008 marvell doc. no. mv-s102944-00 rev. e january 21, 2008, 1.00 document classification: proprietary page 29 6.2 typical pad layout dimensions figure 23: recommended solder pad layout for msop-8 notes: 1. top view 2. drawing not to scale 3. dimensions are in millimeters 4. tolerance 0.05mm 3x3 msop-8l land pattern (mm) 2.37 0.90 5.23 3.43 0.42 0.65 1 1.34 1.40
88pl810/88pl815/88pl830 datasheet doc. no. mv-s102944-00 rev. e copyright ? 2008 marvell page 30 document classification: proprietary january 21, 2008, 1.00 figure 24: recommended solder pad layout for qfn-5 notes: 1. top view 2. drawing not to scale 3. dimensions are in millimeters 4. tolerance 0.05mm 5x5 qfn-5l land pattern (mm) package outline 5.15 0.30 1.00 0.70 4.05 3.10 3.58 2.18 1.50 0.475 0.50
88pl810/88pl815/88pl830 datasheet doc. no. mv-s102944-00 rev. e copyright ? 2008 marvell page 31 document classification: proprietary january 21, 2008, 1.00 this page intentionally left blank
88pl810/88pl815/88pl830 datasheet doc. no. mv-s102944-00 rev. e copyright ? 2008 marvell page 32 document classification: proprietary january 21, 2008, 1.00
ordering information ordering part numbers and package markings copyright ? 2008 marvell doc. no. mv-s102944-00 rev. e january 21, 2008, 1.00 document classification: proprietary page 33 7 ordering information 7.1 ordering part numbers and package markings figure 11 shows the ordering part numbering scheme of the 88pl810/88pl815/88pl830. for complete information, contact marvell fae or sales representative. figure 25: ordering part numbers and package markings 7.2 sample ordering part number the standard ordering part numbers for the respective solutions are as follows: table 11: order samples table part number marking ldo output voltage ldo output current ambient temp range 1 package 2 88pl810-nak1 l10 1.5v 1.0a -40 c to +85 c5x5 qfn-5 88pl815-nak1 l15 1.8v 1.5a -40 c to +85 c5x5 qfn-5 88pl830-nak1 l30 2.5v 3.0a -40 c to +85 c5x5 qfn-5 88pl810-mae1 l10 1.5v 1.0a -40 c to +85 c3x3 msop-8 88pl815-mae1 l15 1.8v 1.5a -40 c to +85 c3x3 msop-8 88pl830-mae1 l30 2.5v 3.0a -40 c to +85 c3x3 msop-8 1. specifications over the -40 c to 85 c operating temperature range are assu red by design, characterization and correlation with statistical process controls. 2. package dimensions are in milimeters.
88pl810/88pl815/88pl830 datasheet doc. no. mv-s102944-00 rev. e copyright ? 2008 marvell page 34 document classification: proprietary january 21, 2008, 1.00 7.3 package markings figures 12 and 13 show a typical package marking and pin 1 location for the 88pl810/88pl815/88pl830 part in 5 x 5mm qfn-5 and 3 x 3mm msop-8. 7.3.1 5 x 5 qfn-5 package marking figure 26: package marking and pin 1 location for 5 x 5mm qfn-5 7.3.2 3 x 3 msop-8 package marking figure 27: package marking and pin 1 location for 3 x 3mm msop-8 mrvl l30 l yy ww marking pin 1 location assembly code work week last two digits of the year
copyright ? 2008 marvell doc. no. mv-s102944-00 rev. e january 21, 2008, 1.00 document classification: proprietary page 35 a revision history table 12: revision history document type document revision release rev. e document brought over from ms word updated template added new msop-8 package and removed dpak package. changes included: section 1. signal description section 2. electrical specifications section 6. mechanical drawings section 7. ordwering information
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