Description
The TPS5431DDAR is a high-output-current PWM converter designed to simplify step-down voltage regulation. At its core, this device integrates a low-resistance (110mΩ) high-side N-channel MOSFET, enabling high-efficiency power conversion of up to 95%. It is built to operate from power rails up to 23V, making it a robust solution for diverse applications ranging from consumer electronics to automotive power management.
Designed for reliability and performance, the TPS5431 features a high-performance voltage error amplifier for tight regulation during transients and a voltage feed-forward circuit to improve line response. To reduce system design complexity, the feedback loop is internally compensated, minimizing the required external component count. Comprehensive protection features—including cycle-by-cycle overcurrent limiting, overvoltage protection, thermal shutdown, and under-voltage lockout (UVLO)—ensure the safety of both the regulator and your downstream electronics.
Key Features
- High Efficiency: Delivers up to 95% efficiency thanks to the integrated 110mΩ MOSFET switch.
- Simplified Design: Internal loop compensation reduces external component count and board space.
- Robust Protection Suite: Includes overcurrent limiting, overvoltage protection, and thermal shutdown for maximum system reliability.
- Inrush Current Control: Features an internally set slow-start circuit to manage power-up sequences.
- Low Standby Power: ENA pin allows for shutting down the device, reducing supply current to typically 18µA.
- Advanced Regulation: Input voltage feed-forward improves line regulation and transient response.
Applications
- Consumer Electronics: High-efficiency power regulation for handheld gadgets and home multimedia systems.
- Industrial Systems: Reliable DC-DC conversion for factory control hardware and field sensors.
- Automotive Power: Rugged design suitable for various onboard power management subsystems.
- Power Management: Versatile enough to regulate a wide variety of power sources, including 24V bus architectures.
Package Includes
- 1 x TPS5431DDAR SO-PowerPad-8 DC-DC Buck Regulator
Technical Specifications
| Parameter | Specification |
|---|---|
| Device | TPS5431DDAR |
| Input Voltage | 3V to 23V |
| Output Voltage | Adjustable (0.5V to 23V) |
| Max Output Current | 3A |
| Switching Frequency | 500kHz |
| Package Type | SO-PowerPad-8 (SMD/SMT) |
| Operating Temp | -40°C to 125°C |
| Dimensions | 4.52 x 3.89 x 1.21 mm |
| Shipping Weight | 0.005 kg |
Note: Product images are shown for illustrative purposes only and may differ from the actual product. For complete technical parameters, please refer to the official device datasheet.
