TPS22904 3.6-V, 0.5-A, 68mΩ load switch with quick output discharge |

This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
3.6-V, 0.5-A, 68mΩ load switch with quick output discharge


Recommended alternative parts

  • TPS22915  - The device has the SAME FUNCTIONALITY as the compared device, but is not pin-for-pin equivalent and may not be parametrically equivalent.   For better price and performance

Special note

No EVM exists for the TPS22904, however, similar EVM TPS22902EVM is available.


The TPS22903 and TPS22904 are ultra-small, low rON single channel load switches with controlled turnon. The device contains a P-channel MOSFET that can operate over an input voltage range of 1.1 V to 3.6 V. The switch is controlled by an on and off input (ON), which is capable of interfacing directly with low-voltage control signals. In TPS22904, a 85-Ω on-chip load resistor is added for output quick discharge when switch is turned off.

TPS22903 and TPS22904 are available in a space-saving 4-terminal WCSP 0.4-mm pitch (YFP). The devices are characterized for operation over the free-air temperature range of –40°C to 85°C.


  • Input Voltage: 1.1 V to 3.6 V
  • Ultralow ON-State Resistance
    • rON = 66 mΩ at VIN = 3.6 V
    • rON = 75 mΩ at VIN = 2.5 V
    • rON = 90 mΩ at VIN = 1.8 V
    • rON = 135 mΩ at VIN = 1.2 V
  • 500-mA Maximum Continuous Switch Current
  • Quiescent Current < 1 µA
  • Shutdown Current < 1 µA
  • Low Control Input Threshold Enables Use of 1.2-
    V, 1.8-V, 2.5-V, and 3.3-V Logic
  • Controlled Slew Rate (5 µs Maximum at 3.6 V)
  • Quick Output Discharge (TPS22904 Only)
  • ESD Performance Tested Per JESD 22
    • 2000-V Human Body Model
      (A114-B, Class II)
    • 1000-V Charged-Device Model (C101)
  • 4-Terminal Wafer Chip-Scale Package (WCSP)
    • 0.8 mm × 0.8 mm,
      0.4-mm Pitch, 0.5-mm Height


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Part number Order Number of channels (#) Vin (Min) (V) Vin (Max) (V) Imax (A) Ron (Typ) (mOhm) Shutdown current (ISD) (Typ) (uA) Quiescent current (Iq) (Typ) (uA) Soft start Rise time (Typ) (us) Features Operating temperature range (C)
TPS22904 Order now 1     1.1     3.6     0.5     68     1     0.18     Fixed Rise Time     0.8     Quick Output Discharge     -40 to 85