New 5V single-channel load switch features programmable soft-start and discharge rate

A new 5V single-channel load switch with programmable soft-start and discharge rate, the ultra-low on-resistance N channel AP22800 has been introduced by Diodes Incorporated. The switch reduces voltage drop and power dissipation and offers continuous current handling of 6A, providing tighter regulation of system power delivery in applications such as ultrabooks and tablets. Simple to programme, the device’s start-up and discharge rates are set using an external capacitor and external resistor, respectively. The load switch also provides an open-drain ‘power good’ output flag to signal target output voltage has been achieved. The AP22800 is designed to operate from 1.5V to 5V, giving it the flexibility to support 1.8V, 2.5V, 3.3V and 5V system rails. Its quiescent current is also low at 21µA, making it a good choice in cell-backed distributed power systems, where power conservation is vital. To help increase power density, the load switch is provided in the thermally efficient, low profile DFN2116-8, which features a footprint of only 3.36mm2, says the company.