G527 Global Mixed-mode Technology Current Limited Load Switch Features General Description The G527 is a current limited N-channel MOSFET power switch designed for highside load switching applications. The low RDS(ON) N-channel power Input Voltage Range: 2.7V to 5.5V Programmable Over-Current Threshold 70mΩ Typical RDS(ON) at VIN=5V Only 2.5V Needed for ON/OFF Control Under-Voltage Lockout Thermal Shutdown No Reverse Leakage Current Open-drain Fault Flag Pin Available with or without output shutdown pull-low resister MOSFET is driven by a built-in charge pump which generates a voltage higher than the supply voltage to fully enhance the switch. This switch operates with inputs ranging from 2.7V to 5.5V, making it ideal for both 3.3V and 5V systems. An integrated current-limiting circuit protects the input supply against large current which may cause the supply to fall out of regulation. The G527 is also protected from thermal overload which limits power dissipation and junction temperatures. Current limit threshold is programmed with a resistor from SET to ground. When the output voltage is higher than input voltage, the power switch is turned off by internal output reverse-voltage comparator. Output Reverse-Voltage Protection SOT-23-6, TSOT-23-6, MSOP-8 and MSOP-8 (FD) Packages UL Certification_#E232223 CB Test Certification by IEC 60950-1:2005 (2nd Edition); Am 1:2009 Applications An open-drain flag output is also available to indicate fault condition, including overcurrent, thermal shutdown, and output reverse-voltage condition. In shutdown mode, the supply current decreases to less than 1µA. The reverse leakage current is also less than 1µA. Hot Swap Supplies Notebook Computers Peripheral Ports Personal Communication Devices The G527 is available in SOT-23-6, TSOT-23-6, MSOP-8 and MSOP-8 (FD) packages. Pin Configuration Typical Application Circuit G527 OUT 1 G527 6 GND 2 IN 5 SET IN 1 8 OUT IN 2 7 OUT 6 FLAG EN(EN) 3 4 EN(EN) FLAG 3 GND 4 SOT-23-6/TSOT-23-6 G527 Power Supply 2.7V to 5.5V EN(EN) 3 Thermal Pad GND 4 Load 0.1µF 22µF FLAG RSET ON G527 8 OUT 1µF* 5 SET MSOP-8 IN 1 IN 2 IN OUT EN(EN) SET OFF 7 OUT 6 FLAG *: 1µF of input capacitor is enough in most application cases. 5 SET If the PCB trace of power rail to IN is long, larger input capacitor is necessary. MSOP-8 (FD) Note: Recommend connecting the Thermal Pad to the GND for excellent power dissipation. TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 0.4 Nov 14, 2013 1