TPS22919DCKR Texas Instruments MCU

TPS22919DCKR Overview

The TPS22919 device is a small, single channel load switch with controlled slew rate. Thedevice contains an N-channel MOSFET that can operate over an input voltage range of 1.6 V to 5.5 Vand can support a maximum continuous current of 1.5 A.

The switch ON state is controlled by a digital input that is capable of interfacingdirectly with low-voltage control signals. When power is first applied, a Smart Pull Down is usedto keep the ON pin from floating until system sequencing is complete. Once the pin is deliberatelydriven High (>V_IH), the Smart Pull Down will be disconnected to preventunnecessary power loss.

The TPS22919 load switch is also self-protected, meaning that it will protect itself fromshort circuit events on the output of the device. It also has thermal shutdown to prevent anydamage from overheating.

TPS22919 is available in a standard SC-70 package characterized for operation over ajunction temperature range of –40°C to 125°C.

Features

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 m (typical)
- 3.6-V V_IN: 90 m (typical)
- 1.8-V V_IN: 105 m (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)