TPS22917 5.5-V, 2-A, 80-mΩ , 10-nA leakage load switch adj. rise time and adj output discharge |

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5.5-V, 2-A, 80-mΩ , 10-nA leakage load switch adj. rise time and adj output discharge



The TPS22917 device is a small, single channel load switch utilizing a low leakage P-Channel MOSFET for minimum power loss. Advanced gate control design supports operating voltages as low as 1 V with minimal increase in ON-Resistance and power loss.

The Rise and Fall times can be independently adjusted with external components for system level optimizations. The timing capacitor (CT) and turn on time can be adjusted to manage inrush current without adding unnecessary system delays. The output discharge resistance (QOD) can be used to adjust the output fall time. Connect the QOD pin directly to the output for a fastest fall time or leave it open for the slowest fall time.

The switch ON state is controlled by a digital input that can interface directly with low-voltage control signals. When power is first applied, a Smart Pull Down is used to keep the ON pin from floating until system sequencing is complete. Once the ON pin is deliberately driven high (≥VIH), the Smart Pull Down (RPD) is disconnected to prevent unnecessary power loss.

The TPS22917 device is available in a small, leaded SOT-23 package (DBV) which allows visual inspection of solder joints. The device is characterized for operation over a temperature range of –40°C to +125°C.


  • Input Operating Voltage Range (VIN): 1 V to 5.5 V
  • Maximum Continuous Current (IMAX): 2 A
  • On-Resistance (RON):
    • 5 VIN = 80 mΩ (Typical)
    • 1.8 VIN = 120 mΩ (Typical)
    • 1 VIN = 220 mΩ (Typical)
  • Ultra-Low Power Consumption:
    • ON State (IQ): 0.5 µA (Typical)
    • OFF State (ISD): 10 nA (Typical)
  • Smart ON Pin Pull Down (RPD):
    • ON ≥ VIH (ION): 10 nA (Maximum)
    • ON ≤ VIL (RPD): 750 kΩ (Typical)
  • Adjustable Turn ON Limits Inrush Current (tON):
    • 5-V tON = 100 µs at 72 mV/µs (CT = Open)
    • 5-V tON = 4000 µs at 2.3 mV/µs (CT = 1000 pF)
  • Adjustable Output Discharge and Fall Time:
    • Optional QOD Resistance ≥ 150 Ω (Internal)
  • Always-ON True Reverse Current Blocking (RCB):
    • Activation Current (IRCB): –500 mA (Typical)
    • Reverse Leakage (IIN,RCB): –1 µA (Maximum)

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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)
TPS22917 Order now 1     1     5.5     2     80     0.01     0.5     Adjustable Rise Time     55     Quick Output Discharge     -40 to 125    
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    
TPS22918 Order now 1     1     5.5     2     52     0.5     8.7     Adjustable Rise Time     135     Quick Output Discharge     -40 to 105