Overview
The TPS2051BDGNR is a 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 a 70mΩ N-channel MOSFET power switch, 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 the device includes an internal charge pump to manage the power-switch rise and fall times, minimizing current surges during switching.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | 8-MSOP (HVSSOP) | |
| Pins | 8 | |
| Operating Temperature Range | -40 to 125 | °C |
| Continuous Current | 500 mA | |
| On-State Resistance | 70 mΩ | |
| Input Voltage Range | 2.7 to 5.5 | V |
| Current Limit | 0.75 A (min), 1.25 A (max) | |
| Rise Time | 0.6 ms (typical) | |
| Standby Supply Current | 1 µA (single, dual), 2 µA (triple, quad) | |
| Thermal Protection | Yes | |
| UL Recognition | Yes, 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 TPS2051BDGNR is designed for various power-distribution applications, particularly where heavy capacitive loads and short circuits are common. These include:
- USB Power Switches
- Power Distribution in Portable Electronics
- Industrial Control Systems
- Automotive Systems
- Medical Devices
Q & A
- What is the TPS2051BDGNR used for?
The TPS2051BDGNR is used as a current-limited, power-distribution switch in applications requiring multiple power switches in a single package.
- What is the on-state resistance of the TPS2051BDGNR?
The on-state resistance of the TPS2051BDGNR is 70 mΩ.
- What is the continuous current rating of the TPS2051BDGNR?
The continuous current rating of the TPS2051BDGNR is 500 mA.
- What is the operating temperature range of the TPS2051BDGNR?
The operating temperature range of the TPS2051BDGNR is -40°C to 125°C.
- Does the TPS2051BDGNR have thermal protection?
Yes, the TPS2051BDGNR includes thermal protection to prevent damage from overheating.
- What is the input voltage range for the TPS2051BDGNR?
The input voltage range for the TPS2051BDGNR is 2.7V to 5.5V.
- How does the TPS2051BDGNR handle overcurrent conditions?
The TPS2051BDGNR limits the output current to a safe level by switching into a constant-current mode when the output load exceeds the current-limit threshold or a short is present.
- Is the TPS2051BDGNR UL recognized?
Yes, the TPS2051BDGNR is UL recognized with File Number E169910.
- What is the typical rise time of the TPS2051BDGNR?
The typical rise time of the TPS2051BDGNR is 0.6 ms.
- Does the TPS2051BDGNR have an internal charge pump?
Yes, the TPS2051BDGNR includes an internal charge pump to control the power-switch rise and fall times.
