TPS22919 Texas instruments

TPS22919

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TPS22919

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Описание

The TPS22919 device is a small, single channel load switch with controlled slew rate. The device contains an N-channel MOSFET that can operate over an input voltage range of 1.6 V to 5.5 V and can support a maximum continuous current of 1.5 A. 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. The TPS22919 load switch is also self-protected, meaning that it will protect itself from short circuit events on the output of the device. It also has thermal shutdown to prevent any damage from overheating.TPS22919 is available in a standard SC-70 package characterized for operation over a junction temperature range of –40°C to 125°C.

Input operating voltage range (V_IN):
1.6 V to 5.5 V
Maximum continuous current (I_MAX): 1.5 A
On-Resistance (R_ON):
- 5-V V_IN: 89 mΩ (typical)
- 3.6-V V_IN: 90 mΩ (typical)
- 1.8-V V_IN: 105 mΩ (typical)
Output short protection (I_SC): 3 A (typical)
Low power consumption:
- ON state (I_Q): 8 µA (typical)
- OFF state (I_SD): 2 nA (typical)
Smart ON pin pull down (R_PD):
- ON ≥ V_IH(I_ON): 100 nA (maximum)
- ON ≤ V_IL (R_PD): 530 kΩ (typical)
Slow Turn ON timing to limit inrush current (t_ON):
- 5.0 V Turn ON time (t_ON):
  1.95 ms at 3.2 mV/µs
- 3.6 V Turn ON time (t_ON):
  1.75 ms at 2.7 mV/µs
- 1.8 V Turn ON time (t_ON):
  1.5 ms at 1.8 mV/µs
Adjustable output discharge and fall time:
- Internal QOD resistance = 24 Ω (typical)

Number of channels	1
Vin (min) (V)	1.6
Vin (max) (V)	5.5
Imax (A)	1.5
Ron (typ) (mΩ)	90
Shutdown current (ISD) (typ) (µA)	0.002
Quiescent current (Iq) (typ) (µA)	8
Soft start	Fixed Rise Time
Current limit type	Fixed
Features	Quick output discharge, Short circuit protection, Thermal shutdown
Rating	Catalog
Operating temperature range (°C)	-40 to 105
FET	Internal
Device type	Load switches
Function	Inrush current control, Short circuit protection, Thermal shutdown