DESCRIPTION
The LTC®1477/LTC1478 protected high side switches provide extremely low RDS(ON) switching with built-in protection against short-circuit and thermal overload conditions. A built-in charge pump generates gate drive higher than the supply voltage to fully enhance the internal NMOS switch. This switch has no parasitic body diode and therefore no current flows through the switch when it is turned off and the output is forced above the input supply voltage. (DMOS switches have parasitic body diodes that become forward biased under these conditions.)

FEATURES
■ Extremely Low RDS(ON) Switch: 0.07Ω
■ No Parasitic Body Diode
■ Built-In Short-Circuit Protection: 2A
■ Built-In Thermal Overload Protection
■ Operates from 2.7V to 5.5V
■ Inrush Current Limited
■ Ultralow Standby Current: 0.01µA
■ Built-In Charge Pump
■ Controlled Rise and Fall Times: tR = 1ms
■ Single Switch in 8-Pin SO Package
■ Dual Switch in Narrow 16-Pin SO Package

APPLICATIONS
■ Notebook Computer Power Management
■ Power Supply/Load Protection
■ Supply/Battery Switch-Over Circuits
■ Circuit Breaker Function
■ "Hot Swap" Board Protection
■ Peripheral Power Protection