TPS22918 5.5V, 2A, 52mΩ load switch with adjustable rise time and adjustable quick output discharge |

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5.5V, 2A, 52mΩ load switch with adjustable rise time and adjustable quick output discharge


Recommended alternative parts

  • TPS22810  -  pin-compatible, wider operating voltage range up to 18V and thermal shutdown


The TPS22918 is a single-channel load switch with configurable rise time and configurable quick output discharge. The device contains an N-channel MOSFET that can operate over an input voltage range of 1 V to 5.5 V and can support a maximum continuous current of 2 A. The switch is controlled by an on and off input, which is capable of interfacing directly with low-voltage control signals.

The configurable rise time of the device greatly reduces inrush current caused by large bulk load capacitances, thereby reducing or eliminating power supply droop. The TPS22918 features a configurable quick output discharge (QOD) pin, which controls the fall time of the device to allow design flexibility for power down and sequencing.

The TPS22918 is available in a small, leaded SOT-23 package (DBV) which allows visual inspection of solder joints. The device is characterized for operation over the free-air temperature range of –40°C to +105°C.


  • Integrated Single Channel Load Switch
  • Ambient Operating Temperature: –40°C to +105°C
  • Input Voltage Range: 1 V to 5.5 V
  • On-Resistance (RON)
    • RON = 52 mΩ (typical) at VIN = 5 V
    • RON = 53 mΩ (typical) at VIN = 3.3 V
  • 2-A Maximum Continuous Switch Current
  • Low Quiescent Current
    • 8.3 µA (typical) at VIN = 3.3 V
  • Low-Control Input-Threshold Enables Use of 1 V or Higher GPIO
  • Adjustable Quick-Output Discharge (QOD)
  • Configurable Rise Time With CT Pin
  • Small SOT23-6 Package (DBV)
    • 2.90-mm × 2.80-mm, 0.95-mm Pitch,
      1.45 mm Height (with leads)
  • ESD Performance Tested per JESD 22
    • ±2-kV HBM and ±1-kV CDM

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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)
TPS22918 Order now 1     1     5.5     2     52     0.5     8.7     Adjustable Rise Time     135     Quick Output Discharge     -40 to 105    
TPS22810 Order now 1     2.7     18     3     79     0.5     62     Adjustable Rise Time     115     Quick Output Discharge
Thermal Shutdown
Under Voltage Lock Out    
-40 to 105    
TPS22915 Order now 1     1.05     5.5     2     38     0.5     7.7     Fixed Rise Time     64
Quick Output Discharge     -40 to 105    
TPS22916 Order now 1     1     5.5     2     60     0.01
0.5     Adjustable Rise Time     65
Active Low
Quick Output Discharge
Reverse Current Protection
Small package size: 0.78mm x 0.78mm    
-40 to 85    
TPS22917 Order now 1     1     5.5     2     80     0.01     0.5     Adjustable Rise Time     55     Quick Output Discharge     -40 to 125    
TPS22919 Order now 1     1.6     5.5     1.5     90     0.002     8     Fixed Rise Time     1280     Quick Output Discharge, Thermal Shutdown     -40 to 105