5V, 3A, 25mΩ load switch with optional output discharge

The TPS22991 is a small, low RON,

single channel load switch with controlled slew rate. The device contains an N-channel

MOSFET that can operate over an input voltage range of 1.0V to 5.5V and can support a

maximum continuous current of 3A. The switch is controlled by an on and off input, which is

capable of interfacing directly with low-voltage control signals.

The small size and low RON makes the

device ideal for being used in space constrained, battery powered applications. The wide

input voltage range of the switch makes it a versatile solution for many different voltage

rails. The controlled rise time of the device greatly reduces inrush current caused by large

bulk load capacitances, thereby reducing or eliminating power supply droop. The TPS22991

further reduces the total solution size by integrating a 150Ω pulldown resistor for quick

output discharge (QOD) when the switch is turned off.

The TPS22991 is available in a small, space saving

0.85mm × 0.75mm, 0.4mm pitch, 4-pin UQFN package. The device is characterized for operation

over the free-air temperature range of –55°C to +125°C.