Load Switch from Incorporated Enhances System Power Control

Diodes AP22800 AP22800HB-7

Diodes Incorporated introduced a 5 V single-channel load switch with programmable soft-start and discharge rate. The ultra-low on-resistance AP22800 N-channel switch reduces volt drop and power dissipation and offers continuous current handling of 6.0 A, providing tighter regulation of system power delivery in ultrabooks and tablets.

Diodes - AP22800

Simple to program, 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.

AP22800 Functional Block Diagram
AP22800 Functional Block Diagram.

The AP22800 is designed to operate from 1.5 V to 5 V, giving it the flexibility to support 1.8 V, 2.5 V, 3.3 V and 5 V system rails. Its quiescent current is also low at 21 μA, making it well-suited for 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 3.36 mm2.

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