G5281 Global Mixed-mode Technology Inc. Slew Rate Controlled Load Switch Features General Description 2.0V to 5.5V Input Voltage Range Very Low RDS(ON) , Typically 80m. (5V) Typical Current Limited is 2.5A at VCC=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 The G5281 is a N-channel MOSFET power switch designed for high-side load-switching applications, and the device has a typical RDS(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 systems. The G5281 also features an under voltage lock out which turns the switch off when an input under-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 1µA.The G5281 is available in a 8 pin TDFN package. Applications Cellular Telephones Digital Still Cameras Hot Swap Supplies Notebook Computers Personal Communication Devices Personal Digital Assistants (PDAs) 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 G5281 IN 1 OUT 2 EN 3 GND 4 Thermal Pad G5281 8 IN 7 IN 6 IN 5 IN IN V IN CIN 1µF GND EN OUT EN GND V OUT C OUT 0.1µF GND TDFN2X2-8 Note: Recomm end co nnectin g the Th ermal Pad to the GND for excel lent power dissi pation. TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.2 Aug 22, 2008 1