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ap133 300ma, low quiescent current, fast transient low dropout linear regulator ap133 rev. 6 1 of 15 february 2009 www.diodes.com ? diodes incorporated ? 300ma low dropout regulator with en ? very low i q : 40a ? wide input voltage range: 2v ? 6v ? adjustable output: 1v ? 5v ? high psrr: 65db at 1khz ? ultra-fast start-up time: 25s ? stable with low esr, 1f ceramic output capacitor ? excellent load/line transient response ? low dropout: 350mv at 300ma ? current limit protection ? short circuit protection ? thermal shutdown protection ? ambient temperature range: -40oc to 85c ? sot25 and dfn2020-6: available in ?green? molding compound (no br, sb) ? lead free finish/rohs compliant (note 1) the ap133 is a 300ma, adjustable output voltage, low dropout linear regulator. the device includes pass element, error amplifier, band-gap, current limit and thermal shutdown circuitry. the device is turned on when en pin is set to logic high level. the characteristics of low dropout voltage and less quiescent current make it good for low power applications, for example, battery powered devices. the typical quiescent current is approximately 40 a from zero to maximum load. built-in current-limit and thermal-shutdown functions prevent ic from damage in fault conditions. the ap133 is available in sot25 and dfn2020-6 packages. ? cellular phones ? smart phones, pdas ? mp3/mp4 ? bluetooth head set ? low power application ap 133 - xx g - 7 packing package green w : sot25 g : green 7 : tape & reel sn : dfn2020-6 device package code packaging (note 2) 7? tape and reel quantity part number suffix ap133-wg-7 w sot25 3000/tape & reel -7 ap133-sng-7 sn dfn2020-6 3000/tape & reel -7 notes: 1. eu directive 2002/95/ec (rohs). all applicable rohs exemptions applied. please visit our website at http://www.diodes.com/products/lead_free.html . 2. pad layout as shown on diodes inc. suggested pad layout document ap02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf . features description applications ordering information
ap133 300ma, low quiescent current, fast transient low dropout linear regulator ap133 rev. 6 2 of 15 february 2009 www.diodes.com ? diodes incorporated pin assignment sot25 in en adj out (top view) 5 4 3 2 1 gnd gnd out dfn2020-6 (top view) 4 adj in en nc 6 5 3 2 1 pin descriptions pin name pin number description sot25 dfn2020-6 in 1 3 voltage input pin. bypass to ground through at least 0.1f capacitor gnd 2 2 ground en 3 1 enable input, active high adj 4 6 output feedback pin nc 5 no connection out 5 4 voltage output pin. bypass to ground through 1f ceramic capacitor
ap133 300ma, low quiescent current, fast transient low dropout linear regulator ap133 rev. 6 3 of 15 february 2009 www.diodes.com ? diodes incorporated functional bloc k diagram in en gnd fb out gate driver 0.8v current limit and thermal shutdown typical applicat ion circuit 1uf in gnd en out enable adj r2 r1 1uf v in v out ap133 ? ? ? ? ? ? ? ? += 2 1 1 r r vv ref out
ap133 300ma, low quiescent current, fast transient low dropout linear regulator ap133 rev. 6 4 of 15 february 2009 www.diodes.com ? diodes incorporated absolute maxi mum ratings symbol parameter ratings unit v in input voltage 7 v out, adj, en voltage v in + 0.3 v continuous load current internal limited t op operating junction temperature range -40 ~ 125 c t st storage temperature range -65 ~150 c p d power dissipation (note 3) sot25 740 mw dfn2020-6 900 mw t j maximum junction temperature 150 c recommended oper ating conditions symbol parameter min max unit v in input voltage (note 4) 2 6 v i out output current 0 300 ma t a operating ambient temperature -40 85 c notes: 3. ratings apply to ambient temperature at 25c 4. at v in < 2.2v and t a < -20 c, the output current capability may be reduced.
ap133 300ma, low quiescent current, fast transient low dropout linear regulator ap133 rev. 6 5 of 15 february 2009 www.diodes.com ? diodes incorporated electrical characteristics (t a = 25 o c, v in = v out +1v, c in = 1uf, c out = 1uf, v en = 2v, unless otherwise stated) symbol parameter test conditions min typ. max unit i q input quiescent current i out = 0~300ma ? 40 60 ua i shdn input shutdown current v en = 0v, i out = 0 ? 1 ua i leak input leakage current v en = 0v, out grounded ? 1 ua v dro p out dropout voltage v out 1.5v, i out = 300ma 350 450 mv v ref adj reference voltage i out = 0 0.8 v i adj adj leakage ? 1 ua v out output voltage accuracy -2 2 % v out / v in /v line regulation v in = v out +1v to 5.5v, i out = 1ma 0.05 %/v v out /v out load regulation i out from 1ma to 300ma -1 1 % t st start-up time v en = 0v to 2.0v, i out = 300ma 25 us psrr psrr 1khz, i out = 0ma 65 db i short short-circuit current v in = 5.0v, v out < 0.2v 120 ma i limit current limit v out = 3v, r out = 3 ? 400 600 ma v il en input logic low voltage 0.4 v v ih en input logic high voltage 1.4 v i en en input leakage v en = 0v or 5.5v -1 1 ua t shdn thermal shutdown threshold 145 c t hys thermal shutdown hysteresis 20 c ja thermal resistance junction-to-ambient sot25 device mounted on fr-4 substrate, 2oz copper, with minimum recommended pad layout. 176 o c/w dfn2020-6 142 jc thermal resistance junction-to-case sot25 41 o c/w dfn2020-6 36
ap133 300ma, low quiescent current, fast transient low dropout linear regulator ap133 rev. 6 6 of 15 february 2009 www.diodes.com ? diodes incorporated typical perform ance characteristics output voltage vs. temperature 3.2900 3.2950 3.3000 3.3050 3.3100 -50.0 -25.0 0.0 25.0 50.0 75.0 100.0 125.0 temperature (c) output voltage (v) vin=5v, vout=3.3v output voltage vs. temperature 1.8000 1.8050 1.8100 1.8150 1.8200 -50.0 -25.0 0.0 25.0 50.0 75.0 100.0 125.0 temperature (c) output voltage (v) vin=3.3v, vout=1.8v output voltage vs. input voltage 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0 . 01 . 02 . 03 . 04 . 05 . 06 . 0 input voltage (v) output voltage (v) iout=0ma iout=150ma quiescent current vs. input voltage 30 35 40 45 50 55 60 2.0 3.0 4.0 5.0 6.0 input voltage (v) quiescent current (ua) iout=0ma iout=300ma quiescent current vs. i out 30.00 35.00 40.00 45.00 50.00 55.00 60.00 0.00 50.00 100.00 150.00 200.00 250.00 300.00 i out (ma) quiescent current (ua) vin=3.3v vin=5v quiescent current vs. temperature 30 35 40 45 50 -50.0 -25.0 0.0 25.0 50.0 75.0 100.0 125.0 temperature (c) quiescent current (ua) vout=1.2v vin=3.3v vout=3.3v vin=5.0v v out =2.8v v out =1.2v
ap133 300ma, low quiescent current, fast transient low dropout linear regulator ap133 rev. 5 7 of 15 february 2009 www.diodes.com ? diodes incorporated typical performance characteristics (continued) adj pin voltage vs. input voltage 0.7990 0.7995 0.8000 0.8005 0.8010 0.8015 0.8020 2.0 3.0 4.0 5.0 6.0 input voltage (v) adj pin voltage (v) dropout voltage vs. i out 0 50 100 150 200 250 300 350 400 450 0.0 50.0 100.0 150.0 200.0 250.0 300.0 i out (ma) dropout voltage (mv) 25c 90c -45c current limit protection time (50us/div) current limit vs. temperature 500 550 600 650 700 750 800 -50-30-101030507090 temperature (c) current limit (ma) vin=3.3v, vout=1.2v vin=5.0v, vout=3.3v short circuit protection time (1ms/div) short circuit protection time (2ms/div) v out =3.3v
ap133 300ma, low quiescent current, fast transient low dropout linear regulator ap133 rev. 5 8 of 15 february 2009 www.diodes.com ? diodes incorporated typical performance characteristics (continued) short circuit current vs. input voltage 70 80 90 100 110 120 130 140 150 2.0 3.0 4.0 5.0 6.0 input voltage (v) short circuit current (ma) short circuit current vs. temperature 80 90 100 110 120 130 140 150 -50-30-101030507090 temperature (c) short circuit current (ma) vin=3.3v, vout=1.2v vin=3.3v, vout=1.8v vin=5.0v, vout=3.3v thermal shutdown protection time (20ms/div) psrr -90. 00 -80. 00 -70. 00 -60. 00 -50. 00 -40. 00 -30. 00 -20. 00 100 1000 10000 100000 fr e q ue n cy ( hz ) psrr (db) line transient response time (20us/div) line transient response time (20us/div)
ap133 300ma, low quiescent current, fast transient low dropout linear regulator ap133 rev. 5 9 of 15 february 2009 www.diodes.com ? diodes incorporated typical performance characteristics (continued) line transient response time (20us/div) line transient response time (20us/div) load transient response time (100us/div) load transient response time (100us/div) load transient response time (20us/div) load transient response time (100us/div)
ap133 300ma, low quiescent current, fast transient low dropout linear regulator ap133 rev. 5 10 of 15 february 2009 www.diodes.com ? diodes incorporated typical performance characteristics (continued) start-up time time (5us/div) start-up time time (5us/div) start-up time time (5us/div) start-up time time (5us/div)
ap133 300ma, low quiescent current, fast transient low dropout linear regulator ap133 rev. 6 11 of 15 february 2009 www.diodes.com ? diodes incorporated application note input capacitor a1 f ceramic capacitor is recommended to connect between v in and gnd pins to decouple input power supply glitch and noise. the amount of the capacitance may be increased without limit. this input capacitor must be located as close as possible to the device to assure input stability and less noise. for pcb layout, a wide copper trace is required for both v in and gnd. a lower esr capacitor allows the use of less capacitance, while higher esr type require more capacitance. output capacitor the output capacitor is required to stabilize and help transient response for ldo. the ap133 is stable with very small ceramic output capacitors. the recommended capacitance is from 1 f to 4.7 f, equivalent series resistance (esr) is from 10m to 100m , and temperature characteristics is x7r or x5r. higher capacitance values help to improve load/line transient response. the output capacitance may be increased to keep low undershoot/overshoot. place output capacitor as close as possible to out and gnd pins, and keep the leads as short as possible. adjustable operation the ap133 provides output voltage from 1.0v to 5.0v through external resistor divider as shown below. c in in gn d en out enable adj r2 r1 v in v out ap133 c out the output voltage is calculated by: ? ? ? ? ? ? ? ? += 2 1 1 r r vv ref out where v ref =0.8v (the internal reference voltage) rearranging the equation will give the following that is used for adjusting the output to a particular voltage: ? ? ? ? ? ? ? ? ?= 1 21 ref out v v rr to maintain the stability of the internal reference voltage, r 2 needs to be kept smaller than 250k . no load stability other than external resistor divider, no minimum load is required to keep the device stable. the device will remain stable and regulated in no load condition. on/off input operation the ap133 is turned on by setting the en pin high, and is turned off by pulling it low. if this feature is not used, the en pin should be tied to in pin to keep the regulator output on at all time. to ensure proper operation, the signal source used to drive the en pin must be able to swing above and below the specified turn-on/off voltage thresholds listed in the electrical characteristics section under v il and v ih . current limit protection when output current at out pin is higher than current limit threshold, the current limit protection will be triggered and clamp the output current to approximately 600ma to prevent over-current and to protect the regulator from damage due to overheating. short circuit protection when out pin is short-circuit to gnd or out pin voltage is less than 200mv, short circuit protection will be triggered and clamp the output current to approximately 120ma. this feature protects the regulator from over-current and damage due to overheating. thermal shutdown protection thermal protection disables the output when the junction temperature rises to approximately +145c, allowing the device to cool down. when the junction temperature reduces to approximately +125c the output circuitry is enabled again. depending on power dissipation, thermal resistance, and ambient temperature, the thermal protection circuit may cycle on and off. this cycling limits the heat dissipation of the regulator, protecting it from damage due to overheating. ultra fast start-up after enabled, the ap133 is able to provide full power in as little as tens of microseconds, typically 25s, without sacrificing low ground current. this feature will help load circuitry move in and out of standby mode in real time, eventually extend battery life for mobile phones and other portable devices. fast transient response fast transient response ldos can also extend battery life. tdma-based cell phone protocols such as global system for mobile communications (gsm) have a transmit/receive duty factor of only 12.5 percent, enabling power savings by putting much of the baseband circuitry into standby mode in between transmit cycles. in baseband circuits, the load often transitions virtually instantaneously from 100a to 100ma. to meet this load requirement, the ldo must react very quickly without a large voltage drop or overshoot ? a requirement that cannot be met with conventional, general-purpose ldos. the ap133?s fast transient response from 0 to 300ma provides stable voltage supply for fast dsp and gsm chipset with fast changing load. small overshoot and undershoot the ap133 has small and controlled overshoot and undershoot in load and line transitions. this helps to protect supplied circuit from damage and operation error caused by glitches. this feature also permits the usage of small value output decoupling capacitor with ap133.
ap133 300ma, low quiescent current, fast transient low dropout linear regulator ap133 rev. 6 12 of 15 february 2009 www.diodes.com ? diodes incorporated low quiescent current cellular phone baseband internal digital circuits typically operate from 1.8v to 2.6v. when the li+ battery voltage falls to 3.2-3.3v, most phones shut off, giving at least 500-600mv of headroom for the baseband digital ldo, so dropout is not critical. output noise and the psrr are not critical specs for the digital circuits. nonetheless, this supply requires low quiescent current at light loads because this ldo stays on at all times. figure below shows how the digital supply current of a representative gsm chipset core varies as a function of time. in the standby mode, the microprocessor consumes only around 200a. since the phone stays in standby for the longest percentage of time, using a 40a quiescent current ldo, instead of 140a, saves 100a and extends the standby time by 340a/240a, or 1.417 times. the baseband internal analog circuit is typically 2.4v-3.0v, and it requires 200-600mv dropout. this ldo is on all the time, so it requires low quiescent current as well. the cellular phone real-time clock ldo needs a very low quiescent current, since this ldo is on all the time even though the handset is powered off. the ap133, consuming only around 40a for all input range and output loading, provides great power saving in portable and low power applications. wide output range the ap133, with a wide output range of 1.0v to 5.0v, provides a versatile ldo solution for many portable applications. high psrr the rf circuit consists of receive and transmit sections, which typically require 2.6v-3.0v supply voltage. the rf circuits such as lna (low-noise amplifier), up/down-converter, mixer, pll, vco, and if stage, require low noise and high psrr ldos. the temperature-compensated crystal oscillator circuit requires very high psrr at rf power amplifier burst frequency. for instance, minimum 65db psrr at 217hz is recommended for the gsm handsets. in order to provide good audio quality, the audio power supply for hand-free, game, mp3, and multimedia applications in cellular phones, require low-noise and high psrr at audio frequency range (20hz-20khz). the ap133, with psrr of 70db at 1khz in best case, is suitable for some of these applications that require high psrr. application note
ap133 300ma, low quiescent current, fast transient low dropout linear regulator ap133 rev. 6 13 of 15 february 2009 www.diodes.com ? diodes incorporated (1) sot25 1 2 3 5 7 4 xx y w x ( top view ) xx : identification code w : week : a~z : 1~26 week; x : a~z : green y : year 0~9 a~z : 27~52 week; z represents 52 and 53 week part number package identification code ap133-w sot25 nb (2) dfn2020-6 ( top view ) x y x x w y : year : 0~9 x : a~z : green xx : identification code w : week : a~z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week part number package identification code ap133-sn dfn2020-6 nb marking information
ap133 300ma, low quiescent current, fast transient low dropout linear regulator ap133 rev. 6 14 of 15 february 2009 www.diodes.com ? diodes incorporated package information (all dimensions in mm) (1) package type: sot25 (2) package type: dfn2020-6 0.05 m c a b b 0.15 bottom view a c 0/0.05 0.57/0.63 0.15max. c 0.15 c 2x- 2x 0.08 c 0.05 c seating plane 1.45/1.65 1.95/2.075 0.30/0.40 0.2/0.3 0.65nom. 0.76/0.96 1.95/2.075 pin#1 id r 0 . 1 marking 0.43mon. (active area depth)
ap133 300ma, low quiescent current, fast transient low dropout linear regulator ap133 rev. 6 15 of 15 february 2009 www.diodes.com ? diodes incorporated notes: 5. the taping orientation of the other package type can be found on our website at http://www.diodes.com/datasheets/ap02007.pdf important notice life support diodes incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or ot her changes without further notice to any product herein. diodes incorporated does not assume any liability arising out of the application or use of any pr oduct described herein; neither does it convey any license under its patent rights, nor the rights of others. the user of products in such applications shall assume all risks of such use and will agree to hold diodes incorporated and all the companies whose products are represented on our website, harmless against all dam ages. diodes incorporated products are not authorized for use as critical components in life support devices or systems without the e xpressed written approval of the president of diodes incorporated. taping orientation

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