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Technical content
Features
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 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
Hot Swap Supplies Notebook Computers Peripheral Ports Personal Communication Devices General Description The G527 is a current limited N-channel MOSFET power switch designed for highside load switching applications. The low R DS(ON) N-channel power 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 sys- tems. 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. Cur- rent 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 com- parator. An open-drain flag output is also available to indi- cate fault condition, including overcurrent, thermal shutdown, and output reverse-voltage condition. In shutdown mode, the supply current decreases to less than 1 µA. The reverse leakage current is also less than 1µA. The G527 is available in SOT-23-6, TSOT-23-6, MSOP-8 and MSOP-8 (FD) packages. P i n C o n f i g u r a t i o n T y p i c a l A p p l i c a t i o n C i r c u i t IN SET FLAG SOT-23-6/TSOT-23-6 G527 5GND EN(EN) IN IN GND OUT OUT FLAG SET MSOP-8 (FD) G527 7Thermal Pad Note: Recommend connecting the Thermal Pad to the GND for excellent power dissipation. EN(EN) IN IN GND OUT OUT FLAG SET MSOP-8 G527 OUT EN(EN) 0.1µF 22µF Load FLAG EN(EN) 1µF Power Supply 2.7V to 5.5V OUTIN ON OFF *: 1µF of input capacitor is enough in most application cases. If the PCB trace of power rail to IN is long, larger input capacitor is necessary. G527 SET RSET IN SET FLAG SOT-23-6/TSOT-23-6 G527 5GND EN(EN) IN IN GND OUT OUT FLAG SET MSOP-8 (FD) G527 7Thermal Pad Note: Recommend connecting the Thermal Pad to the GND for excellent power dissipation. EN(EN) IN IN GND OUT OUT FLAG SET MSOP-8 G527 OUT EN(EN) 0.1µF 22µF Load FLAG EN(EN) 1µF Power Supply 2.7V to 5.5V OUTIN ON OFF *: 1µF of input capacitor is enough in most application cases. If the PCB trace of power rail to IN is long, larger input capacitor is necessary. G527 SET RSET IN SET FLAG SOT-23-6/TSOT-23-6 G527 5GND EN(EN) IN IN GND OUT OUT FLAG SET MSOP-8 (FD) G527 7Thermal Pad Note: Recommend connecting the Thermal Pad to the GND for excellent power dissipation. EN(EN) IN IN GND OUT OUT FLAG SET MSOP-8 G527 OUT EN(EN) 0.1µF 22µF Load FLAG EN(EN) 1µF Power Supply 2.7V to 5.5V OUTIN ON OFF *: 1µF of input capacitor is enough in most application cases. If the PCB trace of power rail to IN is long, larger input capacitor is necessary. G527 SET RSET