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TPS54311PWP from TI,Texas Instruments

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TPS54311PWP

Manufacturer: TI

Low Input Voltage 3A Synchronous Buck Converter with 0.9V Output

Partnumber Manufacturer Quantity Availability
TPS54311PWP TI 5000 In Stock

Description and Introduction

Low Input Voltage 3A Synchronous Buck Converter with 0.9V Output The TPS54311PWP is a step-down (buck) DC-DC converter manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 28V  
- **Output Voltage Range:** Adjustable down to 0.8V  
- **Output Current:** Up to 3A  
- **Switching Frequency:** 570 kHz (typical)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to 125°C  
- **Package:** HTSSOP-14 (PWP)  
- **Features Integrated MOSFETs:** Yes  
- **Control Method:** Voltage Mode PWM  

### **Descriptions:**  
The TPS54311PWP is a synchronous buck converter designed for high-efficiency power conversion in applications such as industrial, automotive, and consumer electronics. It integrates low-side and high-side MOSFETs, reducing external component count.  

### **Features:**  
- **Wide Input Voltage Range (4.5V to 28V)**  
- **3A Continuous Output Current**  
- **Adjustable Output Voltage (0.8V to VIN)**  
- **Internal Compensation Simplifies Design**  
- **Undervoltage Lockout (UVLO) Protection**  
- **Thermal Shutdown Protection**  
- **Soft-Start for Controlled Startup**  
- **Cycle-by-Cycle Current Limiting**  

This device is suitable for powering FPGAs, DSPs, and other low-voltage digital loads.

Application Scenarios & Design Considerations

Low Input Voltage 3A Synchronous Buck Converter with 0.9V Output

Alternative Part Number

  • LM2676S-ADJ --: Adjustable step-down regulator in TO-263 package with similar current capability, widely available and pin-compatible in function.
  • L5973D --: 3A step-down switching regulator with adjustable output, comparable input range and thermal performance.
  • MP1584EN --: Compact 3A step-down converter with wide input range, suitable drop-in functional replacement for many 5V-to-lower rail designs.

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