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TPS22919

SLVSEN5A – OCTOBER 2018 – REVISED FEBRUARY 2019

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8 Detailed Description

8.1 Overview

The TPS22919 device is a 5.5-V, 1.5-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 N-channel MOSFET which reduces the

drop out voltage across the device.

The TPS22919 device has a slow 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.

The TPS22919 load switch is also self-protected, meaning that it will protect itself from short circuit events on the

output of the device. It also has thermal shutdown to prevent any damage from overheating.

8.2 Functional Block Diagram