TPS22946 Power Load Switch

Texas Instruments’ ultra-low power load switch for system protection

TPS22946 Power Load Switch Texas Instruments' TPS22946 is an ultra-low power load switch that provides protection to systems and loads in high-current conditions. The device contains a 300 mΩ current-limited P-channel MOSFET that can operate over an input voltage range of 1.62 V to 5.5 V. The switch is controlled by an on/off input (ON), which is capable of interfacing directly with low-voltage control signals. The TPS22946 includes thermal shutdown protection that prevents damage to the device when a continuous overcurrent condition causes excessive heating by turning off the switch.

When the switch current reaches the maximum limit, the TPS22946 operates in a constant-current mode to prohibit excessive currents from causing damage. The current limit can be selected using the CL input. A high CL input sets the current limit to 155 mA. A low CL input sets the current limit to 70 mA, and a floating CL input sets the current limit to 30 mA.

  • Selectable minimum current limit: 155 mA, 70 mA, or 30 mA
  • Integrated inrush current timeout (8 ms)
  • Shutdown current: <1 mA
  • Thermal shutdown
  • Fault blanking
  • Auto restart
  • Overcurrent condition timeout (automatic disable for permanent overcurrent)
  • 1.8 V compatible control input
  • ESD performance tested per JESD 22
    • 6000 V human-body model (A114-B, Class II)
  • Ultra-low quiescent current 1 μA (typ) at VIN = 1.8 V

Power Load Switch

ImagenNúmero de pieza del fabricanteDescripciónTipo de interruptorCantidad de salidasCantidad disponible
IC PWR SWITCH P-CHAN 1:1 6DSBGATPS22946YZPRIC PWR SWITCH P-CHAN 1:1 6DSBGAPropósito general136271 - InmediataVer detalles
Publicado: 2010-09-24