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TPS54373 from TI,Texas Instruments

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TPS54373

Manufacturer: TI

Low Input Voltage 3A Synchronous Buck Converter with Disabled Sinking During Start Up

Partnumber Manufacturer Quantity Availability
TPS54373 TI 740 In Stock

Description and Introduction

Low Input Voltage 3A Synchronous Buck Converter with Disabled Sinking During Start Up The TPS54373 is a synchronous buck converter manufactured by Texas Instruments (TI). Here are its key specifications, descriptions, and features:  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 28V  
- **Output Voltage Range:** 0.8V to 22V (adjustable via external resistors)  
- **Output Current:** Up to 3A (continuous)  
- **Switching Frequency:** 300 kHz to 2.2 MHz (adjustable or synchronized to an external clock)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 8-pin SOIC (DDA) and 8-pin WSON (DRC)  

### **Descriptions:**  
- The TPS54373 is a **step-down (buck) DC-DC converter** with integrated high-side and low-side MOSFETs.  
- It is designed for **high-efficiency power conversion** in industrial, automotive, and consumer applications.  
- Features **adaptive on-time control** for fast transient response and stable operation.  
- Supports **low-power mode (Eco-mode)** for improved efficiency at light loads.  

### **Features:**  
- **Integrated MOSFETs:** Reduces external component count.  
- **Adjustable Switching Frequency:** Allows optimization for efficiency or size.  
- **Wide Input Voltage Range:** Suitable for various power sources.  
- **Power Good (PG) Output:** Monitors output voltage status.  
- **Soft-Start & Pre-Biased Startup:** Prevents inrush current and supports pre-biased outputs.  
- **Overcurrent & Thermal Protection:** Enhances system reliability.  

For detailed datasheet information, refer to the official TI documentation.

Application Scenarios & Design Considerations

Low Input Voltage 3A Synchronous Buck Converter with Disabled Sinking During Start Up

Alternative Part Number

  • LM2678T-ADJ --: Simple switcher buck regulator with similar 5A capability and wide input range; well-established TI alternative for step-down applications.
  • L5973D --: 2.5A step-down switching regulator with comparable input voltage range and adjustable output; pin-compatible style alternative from another major vendor.
  • MP1584EN --: Compact 3A step-down converter with wide input range and adjustable output, commonly used as a drop-in style replacement for similar buck regulators.

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