mp62055 3.3v/5v, single-channel 500ma current-limited power distribution switch mp62055 rev.1.0 www.monolithicpower.com 1 4/19/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. the future of analog ic technology description the mp62055 power distribution switch features internal current limiting to prevent damage to host devices due to faulty load conditions. the mp62055 analog switch features 115m ? 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 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 is available in tsot23-5 package. features ? 500ma continuous current ? accurate current limit ? 2.7v to 5.5v supply range ? 90ua quiescent current ? 115m ? mosfet ? thermal-shutdown protection ? under-voltage lockout ? 8ms flag deglitch time ? no flag glitch during power up ? reverse current blocking ? tsot23-5 package ? ul file # e322138 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 single-channel 2 5 4 3 1 +5v to v bus usb ports flag in gnd en off on ul recognized component
mp62055 ?current-limited power distribution switche mp62055 rev.1.0 www.monolithicpower.com 2 4/19/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. ordinary information part number enable switch maximum continuous load current typical short- circuit current @ t a =25 package top marking free air temperature (t a ) mp62055ej active high single 500ma 1100ma tsot23-5 6g ?20 c to +85 c * for tape & reel, add suffix ?z (eg. mp62055ej?z). for rohs compliant packaging, add suffix ?lf (eg. mp62055ej?lf?z) package reference out gnd flag in 1 2 3 4 5 en top view 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) ??????????????????.0.56w junction temperature ...............................150c lead temperature ....................................260c storage temperature............... ? 65c to +150c operating junct. temp (t j )...... ? 20c to +125c thermal resistance (3) ja jc 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 ta. 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.
mp62055 ?current-limited power distribution switche mp62055 rev.1.0 www.monolithicpower.com 3 4/19/2010 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 (50%) en signal to (90%) output signal. parameter condition min typ max units in voltage range 2.7 5.5 v supply current single channel 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 1100 ma trip current current ramp (slew rate 100a/s) on output 1 1.4 a under-voltage lockout rising edge 1.95 2.65 v under-voltage hysteresis 250 mv fet on resistance i out =100ma, and -20c mp62055 ?current-limited power distribution switche mp62055 rev.1.0 www.monolithicpower.com 4 4/19/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. pin functions pin # name description 1 out power-distribution switch output. 2 gnd ground 3 flag in-to-out over-current, active -low output flag. open-drain. 4 en enable input. active high. 5 in input voltage. accepts 2.7v to 5.5v input. 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
mp62055 ?current-limited power distribution switche mp62055 rev.1.0 www.monolithicpower.com 5 4/19/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. typical performanc e characteristics v in =5.5v, c l = 2.2f, t a = +25oc, unless otherwise noted. 60 70 80 90 100 110 2.5 3 3.5 4 4.5 5 5.5 6 0 0.5 1 1.5 2 2.5 3.5 3 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 turn off delay (ms) output current (a) input voltage (v) input voltage (v) input voltage (v) input to output voltage (mv) 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 trip current (a) input voltage (v) threshold trip current vs. input voltage current limit response time vs. peak current peak current (a) 0 5 10 15 20 25 30 35 40 45 012345678910 current limit (a) 0.76 0.8 0.84 0.88 0.92 2.5 3 3.5 4 4.5 5 5.5 6 0.8 0.9 1 1.1 1.2 1.3 2.5 3 3.5 4 4.5 5 5.5 6 110 120 130 140 150 160 170 2.5 3 3.5 4 4.5 5 5.5 6 0 10 20 30 40 50 60 70 80 90 0 0.1 0.2 0.3 0.4 0.5 0.6 vin=2.7v vin=3.3v vin=4.5v vin=5v vin=5.5v -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 vs. ambient temperature v in =5v, i o =0.1a
mp62055 ?current-limited power distribution switche mp62055 rev.1.0 www.monolithicpower.com 6 4/19/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. typical performanc e characteristics (continued) v in =5.5v, c l = 2.2f, t a = +25oc, unless otherwise noted. flag 5v/div v out 2v/div i out 0.2a/div en 2v/div 4ms/div 1s/div 1ms/div threshold trip current with ramped load on enabled device ramped load on enabled device short circuit current, device enabled into short 4ms/div 2ms/div flag 2v/div 2ms/div v out 2v/div v out 2v/div v out 2v/div v out 2v/div v out 2v/div i out 0.2a/div i out 0.5a/div i out 0.5a/div i out 2a/div en 2v/div en 2v/div en 5v/div en 5v/div en 5v/div
mp62055 ?current-limited power distribution switche mp62055 rev.1.0 www.monolithicpower.com 7 4/19/2010 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 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, mp62055 switches into to a constant-current mode (current limit value). mp62055 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. mp62055 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 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.
mp62055 ?current-limited power distribution switche mp62055 rev.1.0 www.monolithicpower.com 8 4/19/2010 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 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 mp62055 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.
mp62055 ?current-limited power distribution switche mp62055 rev.1.0 www.monolithicpower.com 9 4/19/2010 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. out mp62055 single-channel 2 5 4 3 1 +5v to v bus usb ports flag in gnd en off on figure 3?application circuit
mp62055 ?current-limited power distribution switche 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 rev.1.0 www.monolithicpower.com 10 4/19/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. package information 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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