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mp6231/mp6232 3.3v/5v, dual-channel 500ma current-limited power distribution switches mp6231/mp6232 rev. 1.2 www.monolithicpower.com 1 3/31/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. the future of analog ic technology description the mp6231/mp6232 power distribution switch features internal current limiting to prevent damage to host devices due to faulty load conditions. the mp6231/mp6232 analog switch has 85m ? on-resistance and operates from 2.7v to 5.5v input. it is available with guaranteed current limits, making it ideal for load switching applications. the mp6231/mp6232 has built-in protection for both over current and increased thermal stress. for over current, the device will limit the current by changing to a constant current mode. as the temperature increases as a result of short circuit, then the device will shut off. the device will recover once the device temperature reduces to approx 120 c. the mp6231/mp6232 is available in 8-pin msop, soic package with exposed pad and 8- pin soic w/o exposed pad. features ? 500ma continuous current ? accurate current limit ? 2.7v to 5.5v supply range ? 140 a quiescent current ? 85m ? mosfet ? thermal-shutdown protection ? under-voltage lockout ? 8ms flag deglitch time ? no flag glitch during power up ? reverse current blocking ? active high & active low options ? ul file # e322138 applications ? smartphone and pda ? portable gps device ? 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 out2 dual-channel mp6232 out1 1 2 3 4 5 6 7 8 +5v to usb controller output 1 output 2 flag1 flag2 en1 in gnd en2 ul recognized component
mp6231/mp6232 ?current-limited power distribution switches mp6231/mp6232 rev. 1.2 www.monolithicpower.com 2 3/31/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. ordering information part number enable switch maximum continuous load current typical short- circuit current @ t a =25c package top marking free air temperature (t a ) MP6231DN* soic8e MP6231DN mp6231dh msop8e 6231d mp6231ds active high soic8 mp6232dn soic8e mp6232dn mp6232dh msop8e 6232d mp6232ds active low dual 0.5a 750ma soic8 -40 c to +85 c * for tape & reel, add suffix ?z (e.g. MP6231DN?z). for rohs compliant packaging, add suffix ?lf (e.g. MP6231DN?lf?z) package reference 1 2 3 4 8 7 6 5 top view gnd in en1* en2* flag1 out1 out2 flag2 exposed pad on backside connect to gnd msop8e gnd in en1* en2* flag1 out1 out2 flag2 1 2 3 4 8 7 6 5 top view exposed pad on backside soic8e gnd in en1* en2* flag1 out1 out2 flag2 1 2 3 4 8 7 6 5 top view soic8 mp6231/mp6232dual-channel (* en is active high for mp6231) absolute maxi mum ratings (1) in .................................................-0.3v to +6.0v en, flag, out to gnd ..............-0.3v to +6.0v continuous power dissipation (t a = +25c) (2) soic8e...................................................... 2.5w msop8e .................................................. 2.27w soic8 ........................................................ 1.4w junction temperature ...............................150c lead temperature ....................................260c storage temperature............... - 65c to +150c operating junct. temp. ........... - 40c to +125c thermal resistance (3) ja jc soic8e .................................. 50 ...... 10... c/w msop8e................................. 55 ...... 12... c/w soic8..................................... 90 ...... 42... 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 powe r 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.
mp6231/mp6232 ?current-limited power distribution switches mp6231/mp6232 rev. 1.2 www.monolithicpower.com 3 3/31/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 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 one channel enabled, i out =0, one switch on 90 120 a supply current both channels enabled, i out =0, both switches on 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 550 1100 ma trip current current ramp (slew rate 100a/s) on output 1.2 1.6 a under-voltage lockout rising edge 1.95 2.65 v under-voltage hysteresis 250 mv fet on resistance i out =100ma , and -40 c mp6231/mp6232 ?current-limited power distribution switches mp6231/mp6232 rev. 1.2 www.monolithicpower.com 4 3/31/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. pin functions mp6231/mp6232 soic8 soic8e msop8e name description 1 gnd ground. 2 in input voltage. accepts 2.7v to 5.5v input. 3 en1 active low: (mp6232), active high: (mp6231) 4 en2 active low: (mp6232), active high: (mp6231) 5 flag2 in-to-out2 over-current, active -low output flag. open-drain. 6 out2 in-to-out2 power-di stribution switch output. 7 out1 in-to-out1 power-distribution switch output 8 flag1 in-to-out1 over-current, active -low output flag. open-drain. 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
mp6231/mp6232 ?current-limited power distribution switches mp6231/mp6232 rev. 1.2 www.monolithicpower.com 5 3/31/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. typical performanc e characteristics v in =5.5v, c l = 1f, t a = +25oc, unless otherwise noted. 0 0.5 1 1.5 2 2.5 3 3.5 4 2.5 3 3.5 4 4.5 5 5.5 6 2.5 3 3.5 4 4.5 5 5.5 6 input voltage (v) input voltage (v) turn on delay (ms) static drain-source on-state resistance vs. input voltage v en =5v, i out =0.5a input to output voltage vs. load current v en =5v current limit vs. input voltage v en =5v supply current, output enabled vs. input voltage v en =5v 0 0.2 0.4 0.6 0.8 1 1.2 turn off delay (ms) output current (a) 0 20 40 60 80 100 120 2.533.544.555.56 2.5 3 3.5 4 4.5 5 5.5 6 2.5 3 3.5 4 4.5 5 5.5 6 input voltage (v) input voltage (v) input voltage (v) 0 10 20 30 40 50 60 70 80 90 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 input to output voltage (mv) vin=5.5v vin=5v vin=4.5v vin=3.3v vin=2.7v current limit (a) threshold trip current vs. input voltage v en =5v 2.5 3 3.5 4 4.5 5 5.5 6 input voltage (v) current limit response time vs. peak current v en =5v 70 80 90 100 110 120 130 140 0.6 0.65 0.7 0.75 0.8 0.85 0.9 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 threshold trip current (a) 0 5 10 15 20 25 30 35 40 45 02468101214 peak current (a) static drain-source on-state resistance variation vs. ambient temperature i o =0.1a, v in =5v -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30 -45 -30 -15 0 15 30 45 60 75 90 am bient t em perat ure ( 0 c)
mp6231/mp6232 ?current-limited power distribution switches mp6231/mp6232 rev. 1.2 www.monolithicpower.com 6 3/31/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. typical performanc e characteristics v in =5.5v, c l = 1f, t a = +25oc, unless otherwise noted. turn on delay and rise time with 0.1uf load v en =5v, c l =0.1uf ramped load on enabled device v en =5v, c l =1uf short circuit current device enabled into short v en =5v, c l =1uf threshold trip current with ramped load on enabled device v en =5v, c l =1uf turn off delay and fall time with 0.1uf load v en =5v, c l =0.1uf en 5v/div v out 2v/div en 5v/div v out 2v/div en 5v/div i out 200ma/div en 5v/div i out 200ma/div i out 500ma/div flag 5v/div i out 1a/div flag 5v/div i out 500ma/div en 5v/div v out 2v/div en 5v/div v out 2v/div v out 2v/div 1s/div 4ms/div 1ms/div 2ms/div 2ms/div
mp6231/mp6232 ?current-limited power distribution switches mp6231/mp6232 rev. 1.2 www.monolithicpower.com 7 3/31/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. function block diagram figure 2?functional block diagram detailed description over current when the load exceeds trip current (minimum threshold current triggering constant-current mode) or a short is present, mp6231/mp6232 switches into to a constant-current mode (current limit value). mp6231/mp6232 will be shutdown only if the overcurrent condition stays long enough to trigger thermal protection. trigger overcurrent protection for different overload conditions occurring in applications: 1) the output has been shorted or overloaded before the device is enabled or input applied. mp6231/mp6232 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. the mp6231/mp6232 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 an 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 an over temp. or a voltage lockout.
mp6231/mp6232 ?current-limited power distribution switches mp6231/mp6232 rev. 1.2 www.monolithicpower.com 8 3/31/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. 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 temp. is internally monitored until the thermal limit is reached. once this temp. 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 mp6231/mp6232 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 chip to reduce the supply current. the device will operate once the enable signal reaches the appropriate level. the input is compatible with both coms and ttl.
mp6231/mp6232 ?current-limited power distribution switches mp6231/mp6232 rev. 1.2 www.monolithicpower.com 9 3/31/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 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, placing a high-value electrolytic capacitor on the output pin(s) is recommended when the output load is heavy. out2 dual-channel mp6232 out1 1 2 3 4 5 6 7 8 +5v to usb controller output 1 output 2 flag1 flag2 en1 in gnd en2 figure 3?application circuit
mp6231/mp6232 ?current-limited power distribution switches mp6231/mp6232 rev. 1.2 www.monolithicpower.com 10 3/31/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. package information soic8e 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 interlead flash or protrusions. 4) lead coplanarity (bo ttom 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
mp6231/mp6232 ?current-limited power distribution switches mp6231/mp6232 rev. 1.2 www.monolithicpower.com 11 3/31/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. 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)
mp6231/mp6232 ?current-limited power distribution switches 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. mp6231/mp6232 rev. 1.2 www.monolithicpower.com 12 3/31/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. soic8 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 see detail "a" 0.0075(0.19) 0.0098(0.25) 0.150(3.80) 0.157(4.00) pin 1 id 0.050(1.27) bsc 0.013(0.33) 0.020(0.51) seating plane 0.004(0.10) 0.010(0.25) 0.189(4.80) 0.197(5.00) 0.053(1.35) 0.069(1.75) top view front view 0.228(5.80) 0.244(6.20) side view 14 85 recommended land pattern 0.213(5.40) 0.063(1.60) 0.050(1.27) 0.024(0.61) 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 interlead 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 aa. 6) drawing is not to scale. 0.010(0.25) bsc gauge plane

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