Overview
The TPS2051B, specifically the TPS2051BDGNRG4, is a current-limited, power-distribution switch produced by Texas Instruments. This device is designed for power-distribution systems that require multiple power switches in a single package, making it ideal for applications where heavy capacitive loads and short circuits are likely to be encountered. Each switch is controlled by a logic enable input, and the device incorporates 70mΩ N-channel MOSFET power switches. The internal charge pump controls the power-switch rise and fall times to minimize current surges during switching, and it operates from supplies as low as 2.7V without requiring external components.
Key Specifications
| Specification | Value |
|---|---|
| Package | DGN (8-Pin MSOP) |
| Operating Temperature Range | –40°C to 125°C |
| Continuous Current | 500mA |
| MOSFET Resistance | 70mΩ |
| Operating Voltage Range | 2.7V to 5.5V |
| Rise Time | 0.6ms (Typical) |
| Fall Time | 0.05ms to 0.5ms |
| Current Limit | 0.75A Minimum, 1.25A Maximum |
| Standby Supply Current | 1µA (Single, Dual) or 2µA (Triple, Quad) |
| Undervoltage Lockout | 2V to 2.5V (Typical) |
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 TPS2051B is suitable for various applications where reliable power distribution is critical, such as:
- Power distribution in consumer electronics
- Industrial control systems
- Automotive systems requiring robust power management
- Medical devices needing precise power control
- Telecommunication equipment
Q & A
- What is the operating temperature range of the TPS2051B?
The operating temperature range is –40°C to 125°C.
- What is the continuous current rating of the TPS2051B?
The continuous current rating is 500mA.
- What is the MOSFET resistance of the TPS2051B?
The MOSFET resistance is 70mΩ.
- What is the operating voltage range of the TPS2051B?
The operating voltage range is 2.7V to 5.5V.
- Does the TPS2051B have thermal and short-circuit protection?
Yes, the TPS2051B includes thermal and short-circuit protection.
- What is the typical rise time of the TPS2051B?
The typical rise time is 0.6ms.
- Does the TPS2051B have undervoltage lockout?
Yes, the TPS2051B features undervoltage lockout.
- What is the standby supply current of the TPS2051B?
The standby supply current is 1µA (Single, Dual) or 2µA (Triple, Quad).
- Is the TPS2051B UL recognized?
Yes, the TPS2051B is UL recognized with File Number E169910.
- What are some common applications of the TPS2051B?
The TPS2051B is commonly used in consumer electronics, industrial control systems, automotive systems, medical devices, and telecommunication equipment.
