Overview
The TPS2042BDGNR is a dual power-distribution switch produced by Texas Instruments. This device is designed for applications where heavy capacitive loads and short circuits are likely to occur. 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 an internal charge pump manages the power-switch rise and fall times to minimize current surges during switching. The device operates from supplies as low as 2.7V and up to 5.5V, making it versatile for various power distribution needs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | HVSSOP (DGN) | - |
| Pins | 8 | - |
| Operating Temperature Range | -40 to 125 | °C |
| Continuous Current | 500 mA | - |
| Static Drain-Source On-State Resistance | 70-135 mΩ (depending on temperature and voltage) | mΩ |
| Operating Voltage Range | 2.7 V to 5.5 V | V |
| Rise Time | 0.6 ms (typical) | ms |
| Current Limit | 0.75 A (minimum), 1.25 A (maximum) | A |
| Standby Supply Current | 1 µA (single, dual) or 2 µA (triple, quad) | µA |
| 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
- Additional UL Recognition for Ganged Configuration
Applications
The TPS2042BDGNR is designed for applications where heavy capacitive loads and short circuits are likely to be encountered. This includes:
- Power distribution systems requiring multiple power switches in a single package
- Systems with heavy capacitive loads
- Applications needing short-circuit protection
Q & A
- What is the operating voltage range of the TPS2042BDGNR?
The operating voltage range is from 2.7V to 5.5V.
- What is the continuous current rating of the TPS2042BDGNR?
The continuous current rating is 500 mA.
- What type of protection does the TPS2042BDGNR offer?
The device offers thermal and short-circuit protection.
- What is the typical rise time of the TPS2042BDGNR?
The typical rise time is 0.6 ms.
- Does the TPS2042BDGNR have undervoltage lockout?
- What is the standby supply current of the TPS2042BDGNR?
The standby supply current is 1 µA (single, dual) or 2 µA (triple, quad).
- Is the TPS2042BDGNR UL recognized?
- What is the ambient temperature range of the TPS2042BDGNR?
The ambient temperature range is –40°C to 85°C.
- How does the TPS2042BDGNR handle overcurrent conditions?
The device limits the output current to a safe level by switching into a constant-current mode and asserts the overcurrent (OCx) logic output low.
- What happens during a thermal shutdown in the TPS2042BDGNR?
The thermal protection circuit shuts off the switch to prevent damage, and recovery is automatic once the device has cooled sufficiently.
