TPS22971 (ACTIVE)

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

3.6V, 3A, 6.7mΩ Load Switch with Adjustable Fast Turn-On, Power Good, and Quick Output Discharge - TPS22971
 

Description

The TPS22971 is a space-saving single-channel load switch with controlled and adjustable Turn-ON slew rate and an integrated Power Good indicator. The device contains an N-channel MOSFET that can operate over a low input voltage range of 0.65 V to 3.6 V and can support a maximum continuous current of 3 A. A low on-resistance of 6.7-mΩ minimizes the power loss 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 wait time. 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 the switch is disabled, a 150-Ω on-chip resistor quickly discharges the output to ground and keeps it from floating.

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

Features

  • 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 = 1 V
  • 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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Parametrics Compare all products in Power Distribution & Savings

 
Vin (Min) (V)
Vin (Max) (V)
Imax (A)
Ron (Typ) (mOhm)
Quiescent Current (Iq) (Typ) (uA)
Features
Soft Start
Rise Time (Typ) (us)
Current Limit Type
Number of Channels (#)
UL Recognition
Rating
Operating Temperature Range (C)
HBM ESD (kV)
Output Rise Time @ 1.8V (Typ) (us)
Quiescent Current (Iq) (Max) (uA)
Ron @1.8V (Typ) (mOhm)
Shutdown Current (ISD) (Typ) (uA)
TPS22971
0.65   
3.6   
3   
6.7   
30   
Power Good
Quick Output Discharge
Thermal Shutdown   
Adjustable Rise Time   
35   
None   
1   
No   
Catalog   
-40 to 85   
2   
21   
90   
6.7   
1.1