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3.6V, 3A, 6.7mΩ Load Switch with Adjustable Fast Turn-On, Power Good, and Quick Output Discharge


Package | PIN: YZP | 8
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $0.53
10-24 $0.47
25-99 $0.44
100-249 $0.37
250-499 $0.34
500-749 $0.28
750-999 $0.22
1000+ $0.20


  • Input Voltage Range (VIN): 0.65 V to 3.6 V
  • On-Resistance
    • RON = 6.7 mΩ (typical) at VIN ≥1.8 V
    • RON = 7.2 mΩ (typical) at VIN =1.05 V
    • RON = 8.9 mΩ (typical) at VIN =0.65 V
  • Maximum Continuous Switch Current (IMAX): 3 A
  • ON State (IQ): 30 µA (typical) at 3.6 VIN
  • OFF State (ISD): 1 µA (typical) at 3.6 VIN
  • Adjustable Slew Rate through CT Pin
    • Fast Turn-ON ≤ 65 µs at VIN = 1V
  • Power Good (PG) Indicator After Switch Turn ON
  • Low Threshold Enable (ON) of 0.9 V (VIH) supports use of low voltage control logic
  • Thermal Shutdown (TSD)
  • Quick Output Discharge (QOD): 150-Ω (typical)

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Texas Instruments  TPS22971YZPR

The TPS22971 is a space-saving single-channel load switch withcontrolled and adjustable Turn-ON slew rate and an integrated Power Good indicator. The devicecontains an N-channel MOSFET that can operate over a low input voltage range of 0.65 V to 3.6 V andcan support a maximum continuous current of 3 A. A low on-resistance of 6.7-mΩ minimizes the powerloss and voltage drop across the load switch. The switch is controlled by an on and off input (ON),which is capable of interfacing directly with low-voltage control signals.

By default, the TPS22971 has a Fast Turn-ON time to minimize system startup and waittime. The Adjustable Slew Rate can also be reduced to limit inrush current. A Power Good (PG)signal internally monitors the gate threshold and indicates when the switch is fully on. When theswitch is disabled, a 150-Ω on-chip resistor quickly discharges the output to ground and keeps itfrom floating.

The TPS22971 is available in an ultra-small, space saving 8-pin WCSP package and ischaracterized for operation over the free-air temperature range of –40°C to 105°C and integratesthermal shutdown to turn off in case of overheating.