On-Resistance load switch enables use across multiple designs and end equipments

Texas Instruments’ TPS22990 product family consists of two devices: TPS22990 and TPS22990N. Each device is a 3.9mohm, single-channel load switch with a controlled and adjustable turn on and integrated PG indicator. The devices contain an N-channel MOSFET that can operate over an input voltage range of 0.6V to 5.5V and can support a maximum continuous current of 10A. The wide input voltage range and high current capability enable the devices to be used across multiple designs and end equipments. 3.9mohm On-resistance minimises the voltage drop across the load switch and power loss from the load switch. The controlled rise time for the device greatly reduces inrush current caused by large bulk load capacitances, thereby reducing or eliminating power supply droop. The adjustable slew rate through CT provides the design flexibility to trade off inrush current and power up timing requirements. Integrated PG indicator notifies the system about the status of the load switch to facilitate seamless power sequencing. The device has an optional 218ohm On-chip resistor for quick discharge of the output when switch is disabled to avoid any unknown state caused by floating supply to the downstream load. It is available in a small, space-saving 3mm × 2mm 10SON package with integrated thermal pad allowing for high power dissipation. The device is characterised for operation over the free-air temperature range of –40C to +105C.