TPS22918DBVR

• Single-Channel Load Switch Rated to 2A Output Current
• Supply Range of 1V to 5.5V
• On-Resistance of 52 Milliohms per the Product Name
• Adjustable Rise Time to Control Inrush Current
• Adjustable Output Discharge for a Defined Turn-Off
• 6-Pin SOT-23, -40C to 105C ambient, MSL 2

The Texas Instruments TPS22918DBVR is a single-channel load switch with adjustable rise time and adjustable output discharge, supplied in a 6-pin SOT-23 measuring 2.9mm x 1.6mm on tape and reel at 3000 pieces per reel. It handles up to 2A of output current from a 1V to 5.5V supply, and the product name gives a 52 milliohm on-resistance. TI rates the TPS22918DBVR from -40C to 105C ambient with a 125C maximum junction temperature, and lists it lead free, RoHS compliant, MSL 2, ECCN EAR99, Active and in Production. A load switch is a MOSFET pass element with integrated gate control, allowing a rail to be turned on and off under logic control with a defined slew rate.

Load switches sequence and isolate rails inside a system: powering down a camera, sensor, radio or display subsystem to cut standby current, staging the order in which processor core, I/O and memory rails come up, isolating a hot-pluggable connector or accessory port, and disconnecting a peripheral that has faulted. The adjustable rise time is the feature designers actually specify it for, since controlling the slew rate limits inrush into the downstream bulk capacitance and prevents the upstream rail from browning out and tripping a supervisor. The adjustable discharge drains that same capacitance on turn-off so the subsystem restarts from a known state rather than a partially charged one. Buyers are consumer, industrial, networking and medical-device OEMs, and a part like the TPS22918DBVR is frequently designed in during power-integrity debug. Confirm the required on-resistance and current derating at the target ambient, since the SOT-23 body limits continuous dissipation.