Overview
The TPS2550DBVR from Texas Instruments is a current-limited, power distribution switch designed for applications where heavy capacitive loads and short-circuits are likely to be encountered. This device utilizes an N-channel MOSFET and is available in various packages, including the DBV package. It features adjustable current-limiting between 100 mA and 1.1 A, which is set via an external resistor. The TPS2550DBVR also includes built-in soft-start, overtemperature protection, and reverse-voltage protection, making it suitable for a wide range of applications.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Input Voltage (VIN) | 2.5 | 6.5 | V | |
| Continuous Output Current (IOUT) | 0 | 1.1 | A | |
| Current-Limit Set Resistor (RILIM) | 14.3 | 80.6 | kΩ | |
| Static Drain-Source On-State Resistance (rDS(on)) - DBV Package | 94 | 100 | 100 | mΩ |
| Operating Junction Temperature (TJ) | -40 | 125 | °C | |
| Maximum Junction Temperature (TJ) | 150 | °C | ||
| ESD Protection (Human Body Model) | ±2000 | V | ||
| FAULT Sink Current | 0 | 25 | mA |
Key Features
- Adjustable current-limit between 100 mA and 1.1 A via an external resistor.
- Fast overcurrent response time of 2 μs typical.
- 94-mΩ high-side MOSFET in DBV package.
- Reverse input-output voltage protection.
- Built-in soft-start functionality.
- 15 kV ESD protection with external capacitance.
- UL listed – file No. E169910.
- Deglitched fault report to prevent false reporting.
- Low standby supply current of 1 μA maximum.
- Operating range: 2.5 V to 6.5 V.
Applications
- USB Ports/Hubs.
- Cell phones.
- Laptops.
- Heavy Capacitive Loads.
- Reverse-Voltage Protection.
Q & A
- What is the adjustable current-limit range of the TPS2550DBVR?
The adjustable current-limit range is between 100 mA and 1.1 A, set via an external resistor. - What is the typical overcurrent response time of the TPS2550DBVR?
The typical overcurrent response time is 2 μs. - What type of MOSFET is used in the DBV package?
The DBV package uses a 94-mΩ high-side N-channel MOSFET. - Does the TPS2550DBVR have reverse input-output voltage protection?
Yes, it includes reverse input-output voltage protection. - What is the purpose of the built-in soft-start functionality?
The built-in soft-start functionality controls the rise and fall times of the output voltage to minimize current surges during switching. - What is the ESD protection rating of the TPS2550DBVR?
The ESD protection rating is ±2000 V according to the Human Body Model. - What is the maximum junction temperature of the TPS2550DBVR?
The maximum junction temperature is 150°C. - What are some common applications of the TPS2550DBVR?
Common applications include USB Ports/Hubs, cell phones, laptops, and heavy capacitive loads. - How does the TPS2550DBVR handle overtemperature conditions?
The device cycles on and off when the junction temperature exceeds 135°C, and it restarts once the temperature cools down by 15°C. - Does the TPS2550DBVR have a deglitched fault report feature?
Yes, it includes a deglitched fault report feature to prevent false reporting due to normal operation.
