Control

Logic

Reverse

Current

Blocking

Driver

IN

ON

GND

QOD

CT

OUT

Timing

Control

13

TPS22917

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SLVSDW8A – SEPTEMBER 2017 – REVISED FEBRUARY 2018

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8 Detailed Description

8.1 Overview

The TPS22917 device is a 5.5-V, 2-A load switch in a 6-pin SOT-23 package. To reduce voltage drop for low

voltage and high current rails, the device implements a low resistance P-channel MOSFET which reduces the

drop out voltage across the device.

The TPS22917 device has a configurable slew rate which helps reduce or eliminate power supply droop because

of large inrush currents. Furthermore, the device features a QOD pin, which allows the configuration of the

discharge rate of VOUT once the switch is disabled. During shutdown, the device has very low leakage currents,

thereby reducing unnecessary leakages for downstream modules during standby. Integrated control logic, driver,

charge pump, and output discharge FET eliminates the need for any external components which reduces

solution size and bill of materials (BOM) count.

8.2 Functional Block Diagram