TPS22948 Texas instruments

TPS22948

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TPS22948

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Описание

The TPS22948 device is a small, single channel load switch with robust protection against fault cases with output current limiting, reverse current blocking, and thermal shutdown. The switch ON state is controlled by a digital input that is capable of interfacing 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 pin is deliberately driven high (>VIH), the smart pull down will be disconnected to prevent unnecessary power loss. ™TPS22948 is available in a standard SC-70 package characterized for operation over a temperature range of –40°C to 125°C.

Input operating voltage range (V_IN):
2.5 V to 5.5 V
Output current limit (I_LIMIT):
240 mA (typical)
Thermal shutdown (TSD)
ON-Resistance (R_ON):
300 mΩ (typical)
Slow Turn ON timing limits inrush current (typical):
- Turn ON time (t_ON):
  820 us at 6.6 mV/µs
Always-ON Reverse Current Blocking (RCB):
- ON State activation current (I_RCB):
  –200 mA (typical)
Fault indication (FLT)
Smart ON pin pull down (R_PD,ON):
- ON V_IH (I_ON): 25 nA (maximum)
- ON V_IL (R_PD,ON): 500 kΩ (typical)
Low power consumption:
- ON State (I_Q): 50 uA (typical)
- OFF State (I_SD): 0.3 uA (typical)

Number of channels	1
Vin (min) (V)	2.5
Vin (max) (V)	5.5
Imax (A)	0.1
Ron (typ) (mΩ)	300
Shutdown current (ISD) (typ) (µA)	5
Quiescent current (Iq) (typ) (µA)	50
Soft start	Fixed Rise Time
Current limit type	Fixed
Features	Reverse current protection, Short circuit protection, Thermal shutdown
Rating	Catalog
Operating temperature range (°C)	-40 to 105
FET	Internal
Device type	Load switches
Function	Inrush current control, Reverse current blocking, Short circuit protection, Thermal shutdown