mp62071 3.3v/5v, single-channel 0.8a current-limited power distribution switch mp62071 rev. 0.9 www.monolithicpower.com 1 9/18/2009 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2009 mps. all rights reserved. the future of analog ic technology description the mp62071 power distribution switch features internal current limiting to prevent damage to host devices due to faulty load conditions. the mp62071 operates from a 3.3v or 5v nominal input voltage and includes a 90m ? power mosfet to handle up to 0.8a continuous load wi th a 1.25a typical current limit. the mp62071 has built-in protection for both over current and increased thermal stress. for over- current protection (ocp), the device will limit the current by going into a constant current mode. when continuous output overload condition exceeds power dissipation of the package, the thermal protection will shut the part off. the device will recover once the device temperature reduces to approx 120 c. the mp62071 is available in 8-pin msop8e and soic8e package with exposed pad. features ? 0.8a continuous current ? accurate current limit ? 2.7v to 5.5v supply range ? 140ua quiescent current ? 90m ? mosfet ? thermal-shutdown protection ? under-voltage lockout ? 8ms flag deglitch time ? no flag glitch during power up ? reverse current blocking ? msop8e and soic8e package ? ul recognized: e322138 applications ? notebook pc ? set-top-box ? telecom and network systems ? pc card hot swap ? usb power distribution ?mps? and ?the future of analog ic technology? are trademarks of monolithic power systems, inc. typical application out mp62071 single-channel 1 2,3 4 5 6,7,8 3.3v/5v input to v bus usb ports flag in gnd en ul recognized component
mp62071 ?single channel 0.8a current-limited power distribution switch mp62071 rev. 0.9 www.monolithicpower.com 2 9/18/2009 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2009 mps. all rights reserved. ordering information part number enable switch maximum continuous load current typical short- circuit current @ t a =25c package temperature mp62071dh active high single 0.8a 1.25a msop8e ?40 c to +85 c mp62071dn active high single 0.8a 1.25a soic8e ?40 c to +85 c for tape & reel, add suffix ?z (eg. mp62071dn?z); for rohs compliant packaging, add suffix ?lf(eg. mp62071dn?lf?z) package reference 1 2 3 4 8 7 6 5 top view gnd in in en out out out flag exposed pad on backside connect to gnd gnd in in en out out out flag 1 2 3 4 8 7 6 5 top view exposed pad on backside connect to gnd msop8e soic8e mp62071 single-channel absolute maxi mum ratings (1) in ....................................................-0.3v to +6v on, flag, out to gnd.................-0.3v to +6v continuous power dissipation (t a = +25c) (2) msop8e .................................................... 2.3w soic8e...................................................... 2.5w junction temperature ...............................150c lead temperature ....................................260c storage temperature............... ? 65c to +150c operating temperature.............. ? 40c to +85c thermal resistance (3) ja jc msop8e................................. 55 ...... 12... c/w soic8e .................................. 50 ...... 10... c/w notes: 1) exceeding these ratings may damage the device. 2) the maximum allowable power dissipation is a function of the maximum junction temperature t j (max), the junction-to- ambient thermal resistance ja , and the ambient temperature t a . the maximum allowable continuous power dissipation at any ambient temperature is calculated by p d (max)=(t j (max)- t a )/ ja . exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. internal thermal shutdown circuitry protects the device from permanent damage. 3) measured on jesd51-7, 4-layer pcb ..
mp62071 ?single channel 0.8a current-limited power distribution switch mp62071 rev. 0.9 www.monolithicpower.com 3 9/18/2009 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2009 mps. all rights reserved. electrical characteristics (4) v in =5v, t a =+25c, unless otherwise noted. parameter condition min typ max units in voltage range 2.7 5.5 v supply current en=high, i out =0 140 160 a shutdown current device disable, v out =float, v in =5.5v 1 a off switch leakage device disable, v in =5.5v 1 a current limit 1000 1250 1500 ma trip current current ramp (slew rate 100a/s) on output 1.45 1.9 a under-voltage lockout rising edge 1.95 2.65 v under-voltage hysteresis 250 mv fet on resistance i out =100ma and -40c mp62071 ?single channel 0.8a current-limited power distribution switch mp62071 rev. 0.9 www.monolithicpower.com 4 9/18/2009 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2009 mps. all rights reserved. pin functions msop8e soic8e name description 1 gnd ground. 2, 3 in input voltage. accepts 2.7v to 5.5v input. 4 en active high. 5 flag in-to-out over-current, active -low output flag. open-drain. 6, 7, 8 out in-to-out power-distribut ion output (for all 3 output pins). typical performanc e characteristics t a = +25oc, unless otherwise noted. v i (en x ) vi(enx) v o (out x ) out x rl cl v o (out x ) vo(outx) 50% 50% 50% 50% 90% 90% 90% 90% 10% 10% 10% 10% t on t r t f ton t off toff voltage waveforms test circuit figure 1?test circuit and voltage waveforms
mp62071 ?single channel 0.8a current-limited power distribution switch mp62071 rev. 0.9 www.monolithicpower.com 5 9/18/2009 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2009 mps. all rights reserved. typical performanc e characteristics t a = +25oc, v in =5v,v en =5v,c l =2.2uf, unless otherwise noted. input votage (v) input votage (v) turn on delay (ms) turn off delay (ms) 3.5 4.5 5.5 6 5 34 2.5 2.5 3 3.5 4 4.5 5 5.5 6 2.5 3 3.5 4 4.5 5 5.5 6 current limit response time vs. peak current input voltage (v) 2 2.5 3 3.5 4 4.5 5 5.5 6 peak current (a) current limit (a) 0 20 40 60 80 100 120 140 0 0.2 0.4 0.6 0.8 1 1.2 output current (a) input to output voltage (mv) 2.5 3 3.5 4 4.5 5 5.5 6 input voltage (v) static drain-source on-state supply current, output enabled vs. input voltage input to output voltage vs. load current input voltage (v) input votage (v) static drain-source on-state resistance vs. input voltage i out =0.8 a current limit vs. input voltage threshold trip current vs. input voltage 0 0.5 1 1.5 2 2.5 3 2.5 3 3.5 4 4.5 5 5.5 6 0 0.05 0.1 0.15 0.2 0.25 0.3 100 110 120 130 140 150 70 80 90 100 110 120 130 140 vin=5v vin=3.3v vin=4.5v vin=5.5v vin=2.7v 0.95 1.05 1.15 1.25 1.35 1.45 1 1.1 1.2 1.3 1.4 1.5 1.6 threshold trip current (a) 0 5 10 15 20 25 30 35 02468101214 static drain-source on-state resistance variation vs. ambient temperature i o =0.1a -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30 -45 -30 -15 0 15 30 45 60 75 90
mp62071 ?single channel 0.8a current-limited power distribution switch mp62071 rev. 0.9 www.monolithicpower.com 6 9/18/2009 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2009 mps. all rights reserved. typical performanc e characteristics t a = +25oc, v in =5v, v en =5v, c l =2.2uf, unless otherwise noted. (continued) ramped load on enabled device 2ms/div 1ms/div 2ms/div en 5v/div v out 2v/div en 5v/div v out 2v/div en 5v/div v out 2v/div en 5v/div v out 2v/div short circuit current, device enabled into short i out 500ma/div en 5v/div threshold trip current with ramped load on enabled device i out 500ma/div v out 2v/div i out 500ma/div flag 5v/div en 5v/div i out 500ma/div i out 1a/div flag 5v/div
mp62071 ?single channel 0.8a current-limited power distribution switch mp62071 rev. 0.9 www.monolithicpower.com 7 9/18/2009 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2009 mps. all rights reserved. function block diagram vref deglitch logic charge pump gnd thermal sense uvlo in en flag out current sense amp -- -- -- -- -- -- -- -- -- -- -- -- -- -- + + -- figure2?functional block diagram
mp62071 ?single channel 0.8a current-limited power distribution switch mp62071 rev. 0.9 www.monolithicpower.com 8 9/18/2009 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2009 mps. all rights reserved. detailed description over current when the load exceeds trip current (minimum threshold current triggering constant-current mode) or a short is present, mp62071 switches into to a constant-current mode (current limit value). mp62071 will be shutdown only if the over current condition stays long enough to trigger thermal protection. trigger over current protection for different overload conditions occurring in applications: 1) the output has been shorted or overloaded before the device is enabled or input applied. mp62071 detects the short or overload and immediately switches into a constant-current mode. 2) a short or an overload occurs after the device is enabled. after the current-limit circuit has been tripped (reached the trip current threshold), the device switches into constant- current mode. however, high current may flow for a short period of time before the current-limit circuit can react. 3 output current has been gradually increased beyond the recommended operating current. the load current rises until the trip current threshold is reached or until the thermal limit of the device is exceeded. mp62071 is capable of delivering current up to the trip current threshold without damaging the device. once the trip threshold has been reached, the device switches into its constant- current mode. flag response the flag pin is an open drain configuration. this fault will report a fail mode after 8ms deglitch timeout. this is used to ensure that no false fault signals are reported. this internal deglitch circuit eliminates the need for extend components. the flag pin is not deglitched during over temperature or voltage lockout. thermal protection the purpose of thermal protection is to prevent damage in the ic by allowing exceptive current to flow and heating the junction. the die temperature is internally monitored until the thermal limit is reached. once this temperature is reached, the switch will turn off and allow the chip to cool. the switch has a built-in hysteresis. under-voltage lockout (uvlo) this circuit is used to monitor the input voltage to ensure that the mp62071 is operating correctly. this uvlo circuit also ensures that there is no operation until the input voltage reaches the minimum spec. enable the logic pin disables the switch to reduce overall supply current .once the en pin reaches logic high, the mp62071 is enabled.
mp62071 ?single channel 0.8a current-limited power distribution switch mp62071 rev. 0.9 www.monolithicpower.com 9 9/18/2009 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2009 mps. all rights reserved. application information power-supply considerations over 10 f capacitor between in and gnd is recommended. this precaution reduces power-supply transients that may cause ringing on the input and improves the immunity of the device to short-circuit transients. in order to achieve smaller output load transient ripple, placing a high-value electrolytic capacitor on the output pin(s) is recommended when the load is heavy.
mp62071 ?single channel 0.8a current-limited power distribution switch mp62071 rev. 0.9 www.monolithicpower.com 10 9/18/2009 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2009 mps. all rights reserved. package information msop8e (exposed pad) note: 1) control dimension is in inches. dimension in bracket is in millimeters. 2) package length does not include mold flash, protrusion or gate burr. 3) package width does not include interlead flash or protrusion. 4) lead coplanarity (bottom of leads after forming) shall be 0.004" inches max. 5) pin 1 identification has half or full circle option. 6) drawing meets jedec mo-187, variation aa-t. 7) drawing is not to scale. 0.030(0.75) 0.037(0.95) 0.043(1.10)max 0.002(0.05) 0.006(0.15) front view seating plane pin 1 id (note 5) 0.114(2.90) 0.122(3.10) 0.187(4.75) 0.199(5.05) 1 4 5 8 0.010(0.25) 0.014(0.35) 0.0256(0.65)bsc 0.114(2.90) 0.122(3.10) top view 0.004(0.10) 0.008(0.20) side view gauge plane 0.010(0.25) 0.016(0.40) 0.026(0.65) 0 o -6 o recommended land pattern 0.016(0.40) 0.0256(0.65)bsc 0.100(2.54) 0.181(4.60) 0.075(1.90) 0.040(1.00) exposed pad bottom view 0.087(2.20) 0.099(2.50) 0.062(1.58) 0.074(1.88)
mp62071 ?single channel 0.8a current-limited power distribution switch notice: the information in this document is subject to change wi thout notice. users should warra nt and guarantee that third party intellectual property rights are not infringed upon w hen integrating mps products into any application. mps will not assume any legal responsibility for any said applications. mp62071 rev. 0.9 www.monolithicpower.com 11 9/18/2009 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2009 mps. all rights reserved. soic8e (exposed pad) see detail "a" 0.0075(0.19) 0.0098(0.25) 0.050(1.27) bsc 0.013(0.33) 0.020(0.51) seating plane 0.000(0.00) 0.006(0.15) 0.051(1.30) 0.067(1.70) top view front view side view bottom view note: 1) control dimension is in inches. dimension in bracket is in millimeters. 2) package length does not include mold flash, protrusions or gate burrs. 3) package width does not include inte rlead flash or protrusions. 4) lead coplanarity (bottom of leads after forming) shall be 0.004" inches max. 5) drawing conforms to jedec ms-012, variation ba. 6) drawing is not to scale. 0.089(2.26) 0.101(2.56) 0.124(3.15) 0.136(3.45) recommended land pattern 0.213(5.40) 0.063(1.60) 0.050(1.27) 0.024(0.61) 0.103(2.62) 0.138(3.51) 0.150(3.80) 0.157(4.00) pin 1 id 0.189(4.80) 0.197(5.00) 0.228(5.80) 0.244(6.20) 14 85 0.016(0.41) 0.050(1.27) 0 o -8 o detail "a" 0.010(0.25) 0.020(0.50) x 45 o 0.010(0.25) bsc gauge plane
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