ver: 1.2 aug 22, 2008 tel: 886-3-5788833 http://www.gmt.com.tw 1 G5281 global mixed-mode technology inc. slew rate controlled load switch features ? 2.0v to 5.5v input voltage range ? very low r ds(on) , typically 80m. (5v) ? typical current limited is 2.5a at v cc =5v ? slew rate limited turn-on time 1.5ms (5v) ? fast shutdown load discharge ? ttl/cmos input logic level ? no reverse output current ? 8 pin tdfn package applications ? cellular telephones ? digital still cameras ? hot swap supplies ? notebook computers ? personal communication devices ? personal digital assistants (pdas) general description the G5281 is a n-channel mosfet power switch designed for high-side load-switching applications, and the device has a typical r ds(on) of 80m and the output current is limited to 2a.the G5281 has a slew rate limited turnon load switch and offers a shutdown load discharge circuit to rapidly turn off a load circuit when the switch is disabled. the G5281 operates with an input voltage ranging from 2v to 5.5v. it is suitable for both 3v and 5v sys- tems. the G5281 also features an under voltage lock out which turns the switch off when an input un- der-voltage condition exists. input logic levels are ttl and 2.5v to 5v cmos compatible. in shutdown mode, the supply current decreases to less than 1 a.the G5281 is available in a 8 pin tdfn package. ordering information order number marking temp. range package (pb free) G5281rc1u 5281 -40 c to 85 c tdfn2x2-8 note: rc: tdfn2x2-8 1: bonding code u: tape & reel pin configuration typical application circuit en out in note: recomm end co nne ctin g the th erma l pad to the g nd for e xcel len t p ower d issi patio n. tdfn2x2-8 1 2 3 4 8 7 6 5 gnd thermal pad in en in out G5281 in in in gnd en c out 0.1 f c in 1 f v in gnd G5281 v ou t gnd en out in note: recomm end co nne ctin g the th erma l pad to the g nd for e xcel len t p ower d issi patio n. tdfn2x2-8 1 2 3 4 8 7 6 5 gnd thermal pad in en in out G5281 in in in gnd en c out 0.1 f c in 1 f v in gnd G5281 v ou t gnd
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