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mic94070/71/72/73 high side power switches mlf and micro leadframe are registered trademarks of amkor technologies, inc. micrel inc. ? 2180 fortune drive ? san jose, ca 95131 ? usa ? tel +1 ( 408 ) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com september 2007 m9999-090507 general description the mic94070-73 are high-side load switches designed for operation between 1.7v to 5.5v. the devices contain a low on-resistance p-channel mosfet that supports 1.2a of continuous current. the mic94071 and mic94073 feature an active load discharge circuit which insures capacitive loads retain no charge when the main switch is in an off state. mic94070-71 feature rapid turn on while mic94072-73 provide a slew rate controlled soft-start turn-on of 800s (typical) to prevent in-rush current from glitching supply rails. an active pull-down on the enable input keeps mic94070-73 in a default off state until the en pin is pulled to a high level. built-in level shift circuitry allows low voltage logic signals to switch higher supply voltages, or vice versa; high level logic signals can control low level voltages. mic94070-73s operating voltage range makes them suitable for 1-cell lithium ion and 2- to 3-cell nimh/nicad/alkaline powered systems, as well as all 5v applications. their low operating current of 2a and low shutdown current of <1a maximize battery life. data sheets and support documentation can be found on micrels web site at: www.micrel.com. features ? 1.7v to 5.5v input voltage range ? 1.2a continuous operating current ? 3a pulse current ? 120m ? r dson (typical) ? built-in level shift for control logic; can be operated by 1.5v logic. ? low 2a quiescent current ? soft-start: mic94072/73 ? micro-power shutdown <1a ? load discharge circuit: mic94071, mic94073 ? space saving 1.2mm 1.6mm thin mlf ? package applications ? load switch in portable applications: - cellular phones - pdas - mp3 players - digital cameras - portable instrumentation ? battery switch-over circuits ? level translator ________________________________________________________________________________________________________ typical application mic94070, 72 load switch application mic94071, 73 load switch with capacitive load discharge downloaded from: http:///
micrel, inc. mic94070/71/72/73 september 2007 2 m9999-090507 ordering information part number part marking (1) standard pb-free standard pb-free fast turn on soft-start load discharge package mic94070yc6 70p sc-70-6 mic94071yc6 71p sc-70-6 mic94072yc6 72p sc-70-6 mic94073yc6 73p sc-70-6 mic94070ymt p70 1.2mm x 1.6mm thin mlf ? mic94071ymt p71 1.2mm x 1.6mm thin mlf ? mic94072ymt p72 1.2mm x 1.6mm thin mlf ? mic94073ymt p73 1.2mm x 1.6mm thin mlf ? notes 1. under-bar symbol on sc-70 pb-free packages may not be to scale. pin configuration sc-70-6 (c6) 1.2x1.6 mm thin mlf ? (mt) pin description pin number sc-70 mlf pin name pin function 1 1 v out drain of p-channel mosfet. 2,5 2 gnd ground and the backside pad (mlf only) should both be connected to electrical ground. 4 3 v in source of p-channel mosfet. 3 4 en enable (input): active-high cmos compatible control input for switch a. do not leave floating. 6 -- nic no internal connection. a signal or voltage applied to this pin will have no effect on device operation. downloaded from: http:///
micrel, inc. mic94070/71/72/73 september 2007 3 m9999-090507 absolute maximum ratings (1) input voltage (v in )................................................ +6v enable voltage (v en ) .......................................... +6v continuous drain current (i d ) (3) t a = 25c (mlf ? ) ....................................... 1.2a t a = 25c (sc-70) ...................................... 1.2a pulsed drain current (i dp ) (4) ............................. 3.0a continuous diode current (i s ) (4) ..................... C50ma storage temperature (t s ) ............... C55c to +150c esd rating C hbm (6) ...........................................4kv operating ratings (2) input voltage (v in ) ................................ +1.7 to +5.5v junction temperature (t j )...............C40c to +125c package thermal resistance sc-70-6 ( ja ) ........................................ 240c/w 1.2mm 1.6mm mlf ? ( ja ).................. 172c/w 1.2mm 1.6mm mlf ? ( jc ) (3) .............. 134c/w electrical characteristics t a = 25c, bold values indicate C40c< t a < +85c, unless noted. symbol parameter condition min typ max units v in = 1.8v to 4.5v, i d = C250 a 0.5 1.2 v v en_th enable threshold voltage v in = 1.7v to 4.5v, i d = C250 a 0.4 1.2 v i q supply current v in = v en = 5.5v, i d = open measured on the v in pin (7) 50na 5 a i en enable input current v in = v en = 5.5v, i d = open 2 4 a i shut-q shutdown current v in = +5.5v, v en = 0v, i d = open measured on the v in pin (7) 25na 1 a i shut-switch off state leakage current v in = +5.5v, v en = 0v, i d = short measured on v out (7) 50na 1 a v in = +5.0v, i d = C100ma, v en = 1.5v 120 170 m ? v in = +4.5v, i d = C100ma, v en = 1.5v 130 185 m ? v in = +3.6v, i d = C100ma, v en = 1.5v 145 210 m ? v in = +2.5v, i d = C100ma, v en = 1.5v 165 225 m ? v in = +1.8v, i d = C100ma, v en = 1.5v 200 260 m ? r ds(on) p-channel drain to source on resistance sc-70 package v in = +1.7v, i d = C100ma, v en = 1.5v 210 285 m ? v in = +5.0v, i d = C100ma, v en = 1.5v 100 160 m ? v in = +4.5v, i d = C100ma, v en = 1.5v 110 165 m ? v in = +3.6v, i d = C100ma, v en = 1.5v 125 180 m ? v in = +2.5v, i d = C100ma, v en = 1.5v 145 200 m ? v in = +1.8v, i d = C100ma, v en = 1.5v 180 240 m ? r ds(on) p-channel drain to source on resistance mlf package v in = +1.7v, i d = C100ma, v en = 1.5v 190 265 m ? r shutdown turn-off resistance v in = +3.6v, i test = 1ma, v en = 0v mic94071, 73 200 400 ? downloaded from: http:///
micrel, inc. mic94070/71/72/73 september 2007 4 m9999-090507 electrical characteristics (dynamic) v in = 5v; t a = 25c, bold values indicate C40c< t a < +85c, unless noted. symbol parameter condition min typ max units v in = +3.6v, id = C100ma, v en = 1.5v mic94070, 71 0.85 1.5 s t on_dly turn-on delay time v in = +3.6v, id = C100ma, v en = 1.5v mic94072, 73 700 1200 s v in = +3.6v, id = C100ma, v en = 1.5v mic94070, 71 0.5 1 5 s t on_rise turn-on rise time v in = +3.6v, id = C100ma, v en = 1.5v mic94072, 73 500 800 1500 s v in = +3.6v, id = C100ma, v en = 1.5v mic94070, 71 100 200 ns t off_dly turn-off delay time v in = +3.6v, id = C100ma, v en = 1.5v mic94072, 73 60 200 ns v in = +3.6v, id = C100ma, v en = 1.5v mic94070, 71 60 100 ns t off_fall turn-off fall time v in = +3.6v, id = C100ma, v en = 1.5v mic94072, 73 60 100 ns notes : 1. exceeding the absolute maximum rating may damage the device. 2. the device is not guaranteed to function outside its operating rating. 3. with backside thermal contact to pcb. 4. pulse width <300 s with < 2% duty cycle. 5. continuous body diode current conduction (reverse conduction, i.e. v out to v in ) is not recommended. 6. devices are esd sensitive. handling precautions recommended. hbm (human body model), 1.5k in series wit h 100pf. 7. measured on the mic94070ymt, for other part numbers, please contact micrel. downloaded from: http:///
micrel, inc. mic94070/71/72/73 september 2007 5 m9999-090507 typical characteristics downloaded from: http:///
micrel, inc. mic94070/71/72/73 september 2007 6 m9999-090507 functional characteristics mic94070 downloaded from: http:///
micrel, inc. mic94070/71/72/73 september 2007 7 m9999-090507 mic94071 downloaded from: http:///
micrel, inc. mic94070/71/72/73 september 2007 8 m9999-090507 mic94072 downloaded from: http:///
micrel, inc. mic94070/71/72/73 september 2007 9 m9999-090507 mic94073 downloaded from: http:///
micrel, inc. mic94070/71/72/73 september 2007 10 m9999-090507 package information 6-pin sc-70 (c6) 4-pin thin mlf ? (mt) downloaded from: http:///
micrel, inc. mic94070/71/72/73 september 2007 11 m9999-090507 recommended land pattern for mlf 1.2x1.6 4 lead optional for maximum thermal performance. heatsink should be connected to gnd plane of pcb for maximum thermal performance. disclaimer: this is only a recommendation based on information available to micrel from its suppliers. actual land pattern may have to be significantly different due to various materials and processes used in pcb assembly. mic rel makes no representation or warranty of performance based on the recommended land pattern. " micrel, inc. 2180 fortune drive san jose, ca 95131 usa tel +1 (408) 944-0800 fax +1 (408) 474-1000 web http://www.micrel.com the information furnished by micrel in this data sheet is believed to be accurate and reliable. how ever, no responsibility is a ssumed by micrel for its use. micrel reserves the right to change circuitry and specifications at any time without notific ation to the customer. micrel products are not designed or authorized for use as components in life support appliances, devices or s ystems where malfu nction of a product can reasonably be expec ted to result in personal injury. life support devices or systems are devices or systems that (a) are in tended for surgical imp lant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significan t injury to the user. a purchasers use or sale of micrel products for use in life support appliances, devices or syste ms is a purchasers own risk and purchaser agrees to fully indemnify micrel for any damages resulting from such use or sale. ? 2007 micrel, incorporated. downloaded from: http:///

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