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1 Features

? Input operating voltage range (VIN): 0.1 V – 4.5 V

? Bias voltage range: 2.3 V – 5.5 V

? Maximum continuous current: 1.5 A

? ON-resistance (RON): 7.5 mΩ (typical)

? Regulated inrush current

? Integrated quick output discharge: 5.3 Ω

? Open drain Power-Good (PG) signal

? Turn-on time: < 200 μs at VIN = 1.0 V

? Thermal shutdown

? VBIAS undervoltage lockout (UVLO)

? Low power consumption:

– ON state (IQ): 10 μA (typical)

– OFF state (ISD): 2.7 μA (typical)

? Smart EN pin pulldown (RPD,EN)

– EN ≥ VIH (ION): 25 nA (typical)

– EN ≤ VIL (RPD,ON): 500 kΩ (typical)

2 Applications

? Wearables

? Solid state drive

? PC and notebooks

? Industrial PC

? Optical module

3 Description

The TPS22999 is a single-channel load switch that

is designed to achieve a fast turn-on time while

keeping a low inrush current The device contains an

N-channel MOSFET that can operate over an input

voltage range of 0.1 V to VBIAS –1.0 V and can

support a maximum continuous current of 1.5 A.

The switch is controlled by an enable pin (EN), which

is capable of interfacing directly with low voltage

GPIO signals (VIH = 0.8 V). The TPS22999 device

has an integrated 5.3-Ω quick output discharge path

when the switch is turned off to enable reliable system

operation. There is a Power-Good (PG) signal on the

device that indicates when the main MOSFET has

fully settled to the lowest resistance path , which can

be used to enable a downstream load. Integrated

thermal shutdown makes sure of protection in high

temperature environments.

The TPS22999 is available in a 0.35 mm pitch,

8-pin WCSP package (YCH) and is characterized for

operation over the free-air temperature range of

–40°C to +105°C.