Overview
The TPS5431DDAG4 is a high-output-current PWM converter produced by Texas Instruments. It is part of the TPS543x family, which integrates a low-resistance, high-side N-channel MOSFET. This device is designed for step-down conversion and offers a wide range of features that enhance its performance and reliability.
The TPS5431 is specifically tailored for applications requiring input voltages up to 23V, making it suitable for various power supply designs. It features internal compensation, which minimizes the need for external components, and includes several protection mechanisms such as overcurrent limiting, overvoltage protection, and thermal shutdown.
Key Specifications
| Specification | Value |
|---|---|
| Input Voltage Range | 5.5V to 23V |
| Output Current | Up to 3A continuous (4A peak) |
| Output Voltage Range | Adjustable down to 1.22V with 1.5% initial accuracy |
| Switching Frequency | Fixed 500kHz |
| Efficiency | Up to 95% enabled by 100mΩ integrated MOSFET switch |
| Operating Junction Temperature Range | –40°C to 125°C |
| Package | 8-pin SO PowerPAD™ integrated circuit package |
| Shutdown Supply Current | Typically 15µA |
Key Features
- Wide input voltage range: 5.5V to 23V
- Up to 3A continuous (4A peak) output current
- High efficiency up to 95% enabled by 100mΩ integrated MOSFET switch
- Wide output voltage range: adjustable down to 1.22V with 1.5% initial accuracy
- Internal compensation minimizes external parts count
- Fixed 500kHz switching frequency for small filter size
- Improved line regulation and transient response by input voltage feedforward
- System protected by overcurrent limiting, overvoltage protection, and thermal shutdown
- Active-high enable and low shutdown supply current
- Thermally enhanced 8-pin SO PowerPAD™ integrated circuit package
Applications
The TPS5431DDAG4 is suitable for a variety of applications, including:
- Consumer electronics such as set-top boxes, CPE equipment, and LCD displays
- Industrial power supplies
- Automotive systems
- Distributed power systems (5V, 12V, 24V)
- Battery-powered devices due to its low shutdown supply current
Q & A
- What is the input voltage range of the TPS5431DDAG4?
The input voltage range of the TPS5431DDAG4 is 5.5V to 23V.
- What is the maximum continuous output current of the TPS5431DDAG4?
The maximum continuous output current is up to 3A, with a peak current of 4A.
- What is the switching frequency of the TPS5431DDAG4?
The switching frequency is fixed at 500kHz.
- What protection mechanisms are included in the TPS5431DDAG4?
The device includes overcurrent limiting, overvoltage protection, and thermal shutdown.
- What is the typical shutdown supply current of the TPS5431DDAG4?
The typical shutdown supply current is 15µA.
- What package type is the TPS5431DDAG4 available in?
The device is available in an 8-pin SO PowerPAD™ integrated circuit package.
- What is the operating junction temperature range of the TPS5431DDAG4?
The operating junction temperature range is –40°C to 125°C.
- Does the TPS5431DDAG4 have internal compensation?
- What is the efficiency of the TPS5431DDAG4?
The efficiency can be up to 95%, enabled by the 100mΩ integrated MOSFET switch.
- Can the output voltage of the TPS5431DDAG4 be adjusted?
