9 Detailed Description

9.1 Overview

The TPS22917x 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 TPS22917x 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 after 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.

9.2 Functional Block Diagram

Control

Logic

Reverse

Current

Blocking

Driver

IN

ON

GND

QOD

CT

OUT

Timing

Control

TPS22917

SLVSDW8B – SEPTEMBER 2017 – REVISED DECEMBER 2021

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14

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