Overview
The TPS22919-Q1, produced by Texas Instruments, is a 5.5 V, 1.5 A, 90-mΩ self-protected load switch designed for automotive and other high-reliability applications. This device features a controlled slew rate and is AEC Q100 qualified, ensuring robust performance in demanding environments. The load switch includes an N-channel MOSFET that operates over an input voltage range of 1.6 V to 5.5 V and supports a maximum continuous current of 1.5 A. It is packaged in a standard SC-70 package and is characterized for operation over a junction temperature range of –40°C to 125°C.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 1.6 V to 5.5 V |
| Maximum Continuous Current | 1.5 A |
| On-Resistance (RDS(ON)) | 90 mΩ |
| Off-State Current (ISD) | 2 nA (typical) |
| Turn-On Time (tON) | 1.95 ms at 5.0 V, 1.75 ms at 3.6 V, 1.5 ms at 1.8 V |
| Package Type | SC-70 (6-pin SOT-23) |
| Junction Temperature Range | –40°C to 125°C |
| Smart Pull Down Resistance (RPD) | 530 kΩ (typical) |
| Internal QOD Resistance | 24 Ω (typical) |
Key Features
- Controlled slew rate to limit inrush current and reduce power supply droop.
- Self-protected against short circuit events and thermal shutdown to prevent overheating.
- Adjustable output discharge and fall time using the QOD pin.
- Low leakage currents during shutdown to reduce unnecessary power loss.
- Integrated control logic, driver, charge pump, and output discharge FET, eliminating the need for external components.
- Smart ON pin pull down to prevent floating until system sequencing is complete.
Applications
- Infotainment and cluster head unit.
- Automotive cluster display.
- ADAS Surround view system ECU.
- Body control module and gateway.
Q & A
- What is the input voltage range of the TPS22919-Q1?
The input voltage range is 1.6 V to 5.5 V. - What is the maximum continuous current supported by the TPS22919-Q1?
The maximum continuous current is 1.5 A. - What is the on-resistance (RDS(ON)) of the TPS22919-Q1?
The on-resistance is 90 mΩ. - How does the TPS22919-Q1 protect against short circuits and overheating?
The device is self-protected against short circuit events and features thermal shutdown to prevent damage from overheating. - What is the purpose of the Smart ON pin pull down in the TPS22919-Q1?
The Smart ON pin pull down prevents the ON pin from floating until system sequencing is complete. - How can the output discharge rate be adjusted in the TPS22919-Q1?
The output discharge rate can be adjusted using the QOD pin, either by shorting it to the VOUT pin or by connecting it to the VOUT pin using an external resistor. - What is the typical turn-on time for the TPS22919-Q1 at different voltages?
The turn-on time is 1.95 ms at 5.0 V, 1.75 ms at 3.6 V, and 1.5 ms at 1.8 V. - What is the junction temperature range for the TPS22919-Q1?
The junction temperature range is –40°C to 125°C. - What are some common applications of the TPS22919-Q1?
Common applications include infotainment and cluster head units, automotive cluster displays, ADAS Surround view system ECUs, and body control modules and gateways. - Is the TPS22919-Q1 still in production?
No, the TPS22919-Q1 has been discontinued by Texas Instruments.
