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TPS5103IDBG4 from TI/BB,Texas Instruments

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TPS5103IDBG4

Manufacturer: TI/BB

Synchronous Buck Controller with Wide Input Voltage Range 20-SSOP -40 to 85

Partnumber Manufacturer Quantity Availability
TPS5103IDBG4 TI/BB 25 In Stock

Description and Introduction

Synchronous Buck Controller with Wide Input Voltage Range 20-SSOP -40 to 85 The TPS5103IDBG4 is a dual-output power supply controller manufactured by Texas Instruments (TI). Here are its key specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 28V  
- **Output Voltage 1 (Buck Converter):** Adjustable from 1.2V to 5.5V  
- **Output Voltage 2 (Linear Regulator):** Fixed 5V or 3.3V (selectable)  
- **Switching Frequency:** 300kHz (fixed)  
- **Buck Converter Output Current:** Up to 2A  
- **Linear Regulator Output Current:** Up to 500mA  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SSOP-28  

### **Descriptions:**  
- The TPS5103IDBG4 integrates a synchronous buck converter and a linear regulator in a single IC.  
- Designed for applications requiring dual power rails, such as DSPs, FPGAs, and networking equipment.  
- Includes features like soft-start, undervoltage lockout (UVLO), and thermal shutdown for protection.  

### **Features:**  
- **Dual Outputs:** Combines a step-down converter and an LDO in one device.  
- **Adjustable Buck Output:** External resistors set the buck converter output voltage.  
- **Selectable LDO Output:** Fixed 5V or 3.3V linear regulator output.  
- **Synchronous Rectification:** Improves efficiency in the buck converter.  
- **Protection Features:** UVLO, overcurrent, and thermal shutdown.  
- **Low Power Consumption:** Designed for energy-efficient operation.  

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

Application Scenarios & Design Considerations

Synchronous Buck Controller with Wide Input Voltage Range 20-SSOP -40 to 85

Alternative Part Number

  • LM3478MM --: Wide-input-voltage low-side N-channel controller in a different series; usable as a functional substitute for low-side gate drive applications with similar control topology.
  • ISL6545CBZ --: Single-phase synchronous buck controller with comparable input range and gate drive; different vendor and series make it a clear cross-reference option.
  • NCP1587DR2G --: Low-voltage synchronous buck controller offering similar functionality and package options; distinct naming series provides a viable third alternative.

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