Overview
The TPS2051BD is a 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. The TPS2051BD features an internal charge pump that controls the power-switch rise and fall times to minimize current surges during switching. However, it is important to note that the TPS2051BD is currently in the process of being discontinued by the manufacturer.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| High-Side MOSFET Resistance | 70mΩ | |
| Continuous Current | 500mA | |
| Operating Voltage Range | 2.7V to 5.5V | |
| Typical Rise Time | 0.6ms | |
| Current Limit | 0.75A (Minimum), 1.25A (Maximum) | |
| Thermal Protection | Automatic shutdown and recovery | |
| Ambient Temperature Range | –40°C to 85°C | |
| Package Type | SOIC (8 pins) | |
| Standby Supply Current | 1µA (Single, Dual) or 2µA (Triple, Quad) | |
| 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 TPS2051BD 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 TPS2051BD used for?
The TPS2051BD is used in power-distribution systems that require multiple power switches in a single package, especially in applications with heavy capacitive loads and potential short circuits.
- What is the continuous current rating of the TPS2051BD?
The continuous current rating of the TPS2051BD is 500mA.
- What is the operating voltage range of the TPS2051BD?
The operating voltage range of the TPS2051BD is from 2.7V to 5.5V.
- Does the TPS2051BD have thermal protection?
Yes, the TPS2051BD has thermal protection that shuts off the switch to prevent damage when the junction temperature rises due to continuous heavy overloads and short circuits.
- What is the typical rise time of the TPS2051BD?
The typical rise time of the TPS2051BD is 0.6ms.
- Does the TPS2051BD have undervoltage lockout?
Yes, the TPS2051BD features undervoltage lockout to ensure the switch remains off until a valid input voltage is present.
- Is the TPS2051BD UL recognized?
Yes, the TPS2051BD is UL recognized with File Number E169910.
- What is the standby supply current of the TPS2051BD?
The standby supply current of the TPS2051BD is 1µA (Single, Dual) or 2µA (Triple, Quad).
- What is the ambient temperature range of the TPS2051BD?
The ambient temperature range of the TPS2051BD is –40°C to 85°C.
- Is the TPS2051BD still in production?
No, the TPS2051BD is in the process of being discontinued by the manufacturer.
