Overview
The TPS2042BDRBR is a dual, current-limited power-distribution switch produced by Texas Instruments. This device is designed for applications where heavy capacitive loads and short circuits are likely to be encountered. It incorporates 70mΩ N-channel MOSFET power switches, making it suitable for power-distribution systems that require multiple power switches in a single package. Each switch is controlled by a logic enable input and features an internal charge pump to manage power-switch rise and fall times, minimizing current surges during switching. The device operates from supplies as low as 2.7V and includes various protection mechanisms such as thermal and short-circuit protection, and undervoltage lockout.
Key Specifications
| Parameter | Value |
|---|---|
| Package | VSON (DRB), 8 Pins |
| Operating Temperature Range | -40°C to 125°C |
| Continuous Current | 500mA |
| High-Side MOSFET Resistance | 70mΩ |
| Operating Voltage Range | 2.7V to 5.5V |
| Typical Rise Time | 0.6ms |
| Current Limit | 0.75A Minimum, 1.25A Maximum |
| Standby Supply Current | 1µA (Single, Dual) or 2µA (Triple, Quad) |
| Ambient Temperature Range | -40°C to 85°C |
| UL Recognition | File Number E169910 |
Key Features
- 70mΩ High-Side MOSFET
- 500mA Continuous Current
- Thermal and Short-Circuit Protection
- Accurate Current Limit (0.75A Minimum, 1.25A Maximum)
- Operating Range: 2.7V to 5.5V
- 0.6ms Typical Rise Time
- Undervoltage Lockout
- Deglitched Fault Report (OC)
- No OC Glitch During Power Up
- Maximum Standby Supply Current: 1µA (Single, Dual) or 2µA (Triple, Quad)
- Ambient Temperature Range: –40°C to 85°C
- UL Recognized, File Number E169910
Applications
The TPS2042BDRBR is suitable for various applications where reliable power distribution is critical, such as:
- Power-distribution systems in consumer electronics
- Industrial control systems
- Automotive systems
- Medical devices
- Any system requiring multiple power switches with heavy capacitive loads and short-circuit protection
Q & A
- What is the operating temperature range of the TPS2042BDRBR?
The operating temperature range is -40°C to 125°C.
- What is the continuous current rating of the TPS2042BDRBR?
The continuous current rating is 500mA.
- What is the resistance of the high-side MOSFET in the TPS2042BDRBR?
The resistance is 70mΩ.
- What is the operating voltage range of the TPS2042BDRBR?
The operating voltage range is 2.7V to 5.5V.
- What protection mechanisms does the TPS2042BDRBR include?
The device includes thermal and short-circuit protection, and undervoltage lockout.
- How does the TPS2042BDRBR handle overcurrent conditions?
The device limits the output current to a safe level by switching into a constant-current mode and pulls the overcurrent (OCx) logic output low.
- What is the typical rise time of the TPS2042BDRBR?
The typical rise time is 0.6ms.
- Is the TPS2042BDRBR UL recognized?
Yes, it is UL recognized with File Number E169910.
- What is the standby supply current of the TPS2042BDRBR?
The standby supply current is 1µA (Single, Dual) or 2µA (Triple, Quad).
- How does the TPS2042BDRBR recover from a thermal shutdown?
Recovery from a thermal shutdown is automatic once the device has cooled sufficiently.
