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mp62055-3 3.3v/5v, single-channel 500ma current-limited power distribution switch mp62055-3 rev. 0.9 www.monolithicpower.com 1 4/12/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. the future of analog ic technology description the mp62055-3 power distribution switch features internal current limiting to prevent damage to host devices due to faulty load conditions. the mp62055-3 analog switch features 90m ? on-resistance and operates from 2.7v to 5.5v input. it is available with a guaranteed current limit, making it ideal for load switching applications. the mp62055-3 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, the device will shut off. the device will recover once the device temperature reduces to approx 120 c. the mp62055-3 is available in tsot23-5 or soic8 package without exposed pad. features ? 10 s response time of current limit ? 500ma continuous current ? accurate current limit ? 2.7v to 5.5v supply range ? 90ua quiescent current ? 90m ? mosfet (soic8) ? 115m ? mosfet (tsot23-5) ? thermal-shutdown protection ? under-voltage lockout ? 8ms flag deglitch time ? reverse current blocking ? tsot23-5 & soic8 package applications ? smartphone and pda ? portable gps device ? set-top-box ? usb power distribution ?mps? and ?the future of analog ic technology? are trademarks of monolithic power systems, inc. typical application out mp62055-3 single-channel 2 5 4 3 1 +5v to v bus usb ports flag in gnd en off on (for tsot23-5)
mp62055-3 ?current-limited power distribution switch mp62055-3 rev. 0.9 www.monolithicpower.com 2 4/12/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. ordering information part number * enable switch maximum continuous load current maximum short- circuit current @ t a =25 c package free air temperature (t a ) MP62055ES-3 active high single 500ma 1100ma soic8 ?20 c to +85 c mp62055ej-3 active high single 500ma 1100ma tsot23-5 ?20 c to +85 c * for tape & reel, add suffix ?z (eg. MP62055ES-3 ?z). for rohs compliant packaging, add suffix ?lf (eg. MP62055ES-3?lf?z) package reference gnd in in en out out out flag 1 2 3 4 8 7 6 5 top view top view out gnd flag 1 2 3 5 4 in en soic8 tsot23-5 absolute maxi mum ratings (1) in ....................................................-0.3v to +6v en, flag, out to gnd .................-0.3v to +6v continuous power dissipation (t a = +25c) (2) soic8.......................................................1.39w tsot23-5.................................................0.57w junction temperature ...............................150c lead temperature ....................................260c storage temperature............... ? 65c to +150c operating junct. temp (t j )..... ?20 c to +125 c thermal resistance (3) ja jc soic8..................................... 90 ...... 42... c/w tsot23-5.............................. 220 .... 110.. 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.
mp62055-3 ?current-limited power distribution switch mp62055-3 rev. 0.9 www.monolithicpower.com 3 4/12/2010 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. note: 4) production test at +25c. specificat ions over the temperature range are guaranteed by design and characterization. 5) measured from 10% to 90%. 6) measured from 90% to 10%. 7) measured from (50%) en signal to (90%) output signal. 8) measured from (50%) en signal to (10%) output signal. parameter condition min typ max units in voltage range 2.7 5.5 v supply current device enable, v out =float 70 90 120 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 550 808 1100 ma response time to short circuit v in =5v 10 s trip current current ramp (slew rate 100a/s) on output 0.6 1 1.4 a under-voltage lockout rising edge 1.95 2.65 v under-voltage hysteresis 250 mv soic8 90 130 fet on resistance i out =100ma (-20c t a +85c ) tsot23-5 115 155 m ? en input logic high voltage 2 v en input logic low voltage 0.8 v flag output logic low voltage i sink =5ma 0.15 0.4 v flag output high leakage current v in =v flag =5.5v 1 a thermal shutdown 140 c thermal shutdown hysteresis 20 c v in =5.5v, c l =1uf, r l =11 ? 0.9 2 ms v out rising time, tr (5) v in =2.7v, c l =1uf, r l =11 ? 1.7 3 ms v in =5.5v, c l =1uf, r l =11 ? 0.5 ms v out falling time, tf (6) v in =2.7v, c l =1uf, r l =11 ? 0.4 ms turn on time, ton (7) c l =100 f, r l =11 ? 1.8 3 ms turn off time, toff (8) c l =100 f, r l =11 ? 2.5 10 ms flag deglitch time 4 8 15 ms en input leakage 1 a reverse leakage current v out =5.5v, v in =0 0.2 1 a
mp62055-3 ?current-limited power distribution switch mp62055-3 rev. 0.9 www.monolithicpower.com 4 4/12/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. pin functions soic8 tsot23-5 name description 1 2 gnd ground. 2, 3 5 in input voltage. accepts 2.7v to 5.5v input. 4 4 en enable input. active high. 5 3 flag in-to-out over-current, active -low output flag. open-drain. 6, 7, 8 1 out power-distribution switch output. typical performanc e characteristics t a = +25oc, unless otherwise noted. figure 1?test circuit and voltage waveforms iout short circuit current limit tresp figure 2?response time to short circuit waveform
mp62055-3 ?current-limited power distribution switch mp62055-3 rev. 0.9 www.monolithicpower.com 5 4/12/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. typical performanc e characteristics v in =5v, v en = 5v, v cc =5v, c l =2.2f, t a = +25oc, unless otherwise noted. supply current vs. input voltage en=high, output=float static drain-source on-state resistance variation vs. ambient temperature i o =0.1a input to output voltage vs. load current tsot23-5 package current limit vs. input voltagee static drain-source on-state resistance vs. input voltage tsot23-5 package, i o =0.1a 1 1.5 2 2.5 3 3.5 4 2.5 3 3.5 4 4.5 5 5.5 6 input voltage (v) 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 2.5 3 3.5 4 4.5 5 5.5 6 input voltage (v) 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 1.6 2.5 3 3.5 4 4.5 5 5.5 6 input voltage (v) 20 25 30 35 40 45 50 2.5 3 3.5 4 4.5 5 5.5 6 input voltage (v) 70 75 80 85 90 95 100 105 2.5 3 3.5 4 4.5 5 5.5 6 input voltage (v) -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30 -30 -15 0 15 30 45 60 75 90 static drain-source on-state resistance variation (%) 110 120 130 140 150 160 170 2.5 3 3.5 4 4.5 5 5.5 6 input voltage (v) static drain-source on-state 0 10 20 30 40 50 60 70 80 90 0 0.1 0.2 0.3 0.4 0.5 0.6 output current (a) 0.7 0.75 0.8 0.85 0.9 0.95 2.5 3 3.5 4 4.5 5 5.5 6 input voltage (v) current limit (a) v in =5.5v v in =5v v in =4.5v v in =4v v in =3.3v v in =2.7v
mp62055-3 ?current-limited power distribution switch mp62055-3 rev. 0.9 www.monolithicpower.com 6 4/12/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. typical performanc e characteristics v in =5v, v en = 5v, v cc =5v, c l =2.2f, t a = +25oc, unless otherwise noted. current limit response time vs. peak current threshold trip current with ramped load on enabled device flag deglitch when ramped load to current limit short the output then enable the device threshold trip current vs. input voltage 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 2.5 3 3.5 4 4.5 5 5.5 6 input voltage (v) threshold trip current (a) 4 6 8 10 12 14 16 1.5 2 2.5 3 3.5 4 4.5 5 peak current (a) v out 2v/div. v en 2v/div. v en 2v/div. v out 2v/div. v en 2v/div. i out 0.5a/div. v out 2v/div. i out 0.5a/div. v en 2v/div. v out 2v/div. v en 2v/div. v out 2v/div. flag 2v/div. i out 0.5a/div.
mp62055-3 ?current-limited power distribution switch mp62055-3 rev. 0.9 www.monolithicpower.com 7 4/12/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. typical performanc e characteristics v in =5v, v en = 5v, v cc =5v, c l =2.2f, t a = +25oc, unless otherwise noted. v en 2v/div. i in 0.5a/div. input inrush current with different load capacitance i o = 0.5a flag 5v/div. i out 0.5a/div. v out 50mv/div. v in 5v/div. flag 5v/div. i out 0.5a/div. short vout to gnd
mp62055-3 ?current-limited power distribution switch mp62055-3 rev. 0.9 www.monolithicpower.com 8 4/12/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. function block diagram vref deglitch logic charge pump gnd thermal sense uvlo in en flag out current sense amp -- -- -- -- -- -- -- -- -- -- -- -- -- -- + + -- figure 3?function block diagram
mp62055-3 ?current-limited power distribution switch mp62055-3 rev. 0.9 www.monolithicpower.com 9 4/12/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 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, mp62055-3 switches into to a constant-current mode (current limit value). mp62055-3 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. mp62055-3 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 mp62055-3 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. when over current or over temperature is encountered, flag will report a fail mode (low level). it remains low until fault condition is removed. for over temperature, the flag is not deglitched. when output is shorted to ground and the device enters to thermal cycle, flag will keep low level until the device resumes normal operation. for over current, 8ms deglitch timeout is needed. this is used to ensure that no false fault signals are reported. this internal deglitch circuit eliminates the need for components. the flag will not change state when the input uvlo is triggered. 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, and would recover once cooling down to approx 120c. under-voltage lockout (uvlo) this circuit is used to monitor the input voltage to ensure that the mp62055-3 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 logic enable threshold. the input is compatible with both cmos and ttl.
mp62055-3 ?current-limited power distribution switch mp62055-3 rev. 0.9 www.monolithicpower.com 10 4/12/2010 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 ripple, placing a high-value electrolytic capacitor on the output pin(s) is recommended when the load is heavy.
mp62055-3 ?current-limited power distribution switch mp62055-3 rev. 0.9 www.monolithicpower.com 11 4/12/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. package information 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
mp62055-3 ?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. mp62055-3 rev. 0.9 www.monolithicpower.com 12 4/12/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. tsot23-5 0.30 0.50 seating plane 0.95 bsc 0.84 0.90 1.00 max 0.00 0.10 top view front view side view recommended land pattern 2.80 3.00 1.50 1.70 2.60 3.00 1 3 4 5 0.09 0.20 note: 1) all dimensions are 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 0.10 millimeters max. 5) drawing conforms to jedec mo-193, variation aa. 6) drawing is not to scale. 0.30 0.50 0 o -8 o 0.25 bsc gauge plane 2.60 typ 1.20 typ 0.95 bsc 0.60 typ see detail "a" detail a

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