TPS22970 (正在供货)

TPS22970x 3.6V、4A、导通电阻为 5.3mΩ 的负载开关

TPS22970x 3.6V、4A、导通电阻为 5.3mΩ 的负载开关 - TPS22970


The TPS22970 is a small, space-saving load switch with controlled Turn-ON to reduce inrush current. The device contains an N-channel MOSFET that can operate over an input voltage range of 0.65 V to 3.6 V and pulsed switch currents up to 4 A. An integrated charge pump biases the NMOS switch in order to achieve a minimum switch ON resistance (RON). The switch is controlled by an on and off input (ON), which is capable of interfacing directly with low-voltage control signals.

The TPS22970 is capable of thermal shutdown when the junction temperature is above the threshold, turning the switch off. The switch turns on again when the junction temperature stabilizes to a safe range.

The TPS22970 has a 150-Ω on-chip resistor for quick discharge of the output when switch is disabled to avoid any unknown state caused by floating supply to the downstream load.

The TPS22970 has an internally controlled rise time in order to reduce inrush current.

The TPS22970 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.


  • Input Voltage Range (VIN): 0.65 V to 3.6 V
  • On-Resistance
    • RON = 4.7 mΩ (Typical) at VIN ≥ 1.8 V
    • RON = 5.1 mΩ (Typical) at VIN = 1.05 V
    • RON = 6.4 mΩ (Typical) at VIN = 0.65 V
  • Maximum Continuous Switch Current (IMAX): 4 A
  • ON State (IQ): 30 µA (Typical) at VIN > 1.2 V
  • OFF State (ISD): 1 µA (Typical) at VIN > 1.8 V
  • Controlled Slew Rate to Avoid Inrush Current
    • 3.6 V Turn-ON time (tON): 1530 µs
    • 0.65 V Turn-ON time (tON): 815 µs
  • Low Threshold Enable (ON) Supports Use of Logic as Low as 0.9 V (VIH) of Logic
  • Thermal Shutdown (TSD)
  • Quick Output Discharge (QOD): 150-Ω (Typical)

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参数 与其它产品相比 配电与蓄电

Vin (Min) (V)
Vin (Max) (V)
Imax (A)
Ron (Typ) (mOhm)
Quiescent Current (Iq) (Typ) (uA)
Soft Start
Rise Time (Typ) (us)
Current Limit Type
Number of Channels (#)
UL Recognition
Operating Temperature Range (C)
Output Rise Time @ 1.8V (Typ) (us)
Quiescent Current (Iq) (Max) (uA)
Ron @1.8V (Typ) (mOhm)
Ron @4.5V (Typ) (mOhm)
Shutdown Current (ISD) (Typ) (uA)
TPS22970 TPS22920 TPS22971 TPS22990
0.65    0.75    0.65    0.6   
3.6    3.6    3.6    5.5   
4    4    3    10   
4.7    5.3    6.7    3.9   
35    68    30    55   
Quick Output Discharge
Thermal Shutdown   
Quick Output Discharge    Power Good
Quick Output Discharge
Thermal Shutdown   
Power Good
Quick Output Discharge
Fixed Rise Time    Fixed Rise Time    Adjustable Rise Time    Adjustable Rise Time   
985    880    35    30.5   
None    None    None    None   
1    1    1    1   
No    No    No    No   
Catalog    Catalog    Catalog    Catalog   
-40 to 85    -40 to 85    -40 to 85    -40 to 105   
2    4    2    2   
  800    21    Adjustable   
90    350    90    76   
4.7    5.5    6.7    3.9   
1    5.5    1.1    5