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TPS5103IDBR from TI,Texas Instruments

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TPS5103IDBR

Manufacturer: TI

Synchronous Buck Controller with Wide Input Voltage Range

Partnumber Manufacturer Quantity Availability
TPS5103IDBR TI 50000 In Stock

Description and Introduction

Synchronous Buck Controller with Wide Input Voltage Range The TPS5103IDBR is a dual-output power supply controller manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 28V  
- **Output Voltage 1:** Adjustable (Buck Converter)  
- **Output Voltage 2:** Fixed 5V (Linear Regulator)  
- **Switching Frequency:** 300kHz (Typical)  
- **Buck Converter Output Current:** Up to 2A  
- **Linear Regulator Output Current:** Up to 500mA  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SSOP-16 (DBR)  

### **Descriptions:**  
The TPS5103IDBR integrates a synchronous buck converter and a linear regulator to provide dual-output power supply solutions. It is designed for applications requiring efficient power conversion with a fixed 5V auxiliary output.  

### **Features:**  
- Integrated synchronous buck converter  
- Built-in 5V linear regulator  
- Adjustable buck output voltage  
- Overcurrent protection  
- Thermal shutdown protection  
- Low shutdown current (<10µA)  
- Soft-start for controlled power-up  

For detailed electrical characteristics and application circuits, refer to the official TI datasheet.

Application Scenarios & Design Considerations

Synchronous Buck Controller with Wide Input Voltage Range

Alternative Part Number

  • LM3478MM --: Wide-input-voltage low-side N-channel controller in the same TI portfolio; commonly used as a functional substitute in DC-DC converter designs with similar control topology.
  • ISL6545CBZ --: Single-phase synchronous buck controller with comparable voltage-mode control and gate drive, suitable as a cross-vendor replacement for similar power supply applications.
  • NCP1587DR2G --: Low-cost synchronous buck controller offering similar functionality and package options, often considered when the original TI controller is unavailable.

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