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LT3845AIFE#TRPBF from LT

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LT3845AIFE#TRPBF

Manufacturer: LT

High Voltage Synchronous Current Mode Step-Down Controller with Adjustable Operating Frequency

Partnumber Manufacturer Quantity Availability
LT3845AIFE#TRPBF,LT3845AIFETRPBF LT 2015 In Stock

Description and Introduction

High Voltage Synchronous Current Mode Step-Down Controller with Adjustable Operating Frequency The LT3845AIFE#TRPBF is a high-performance synchronous step-down DC/DC controller manufactured by Linear Technology (now part of Analog Devices).  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 60V  
- **Output Voltage Range:** 0.8V to 24V  
- **Switching Frequency:** 50kHz to 750kHz (adjustable)  
- **Maximum Output Current:** Up to 20A (with external MOSFETs)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 28-Lead TSSOP with Exposed Pad  

### **Descriptions:**  
The LT3845AIFE#TRPBF is a versatile synchronous buck controller designed for high-power applications. It features a wide input voltage range, making it suitable for automotive, industrial, and telecom systems. It supports adjustable frequency operation and includes protection features such as overcurrent, overvoltage, and thermal shutdown.  

### **Features:**  
- **Wide Input Voltage Range (4.5V to 60V)**  
- **Adjustable Switching Frequency (50kHz to 750kHz)**  
- **Synchronous Rectification for High Efficiency**  
- **Programmable Soft-Start**  
- **Precision 0.8V Reference Voltage**  
- **Current Mode Control for Fast Transient Response**  
- **Overcurrent and Overtemperature Protection**  
- **Low Shutdown Current (<1µA)**  
- **TSSOP-28 Package with Exposed Pad for Thermal Management**  

This controller is commonly used in power supplies, distributed power systems, and battery-powered applications requiring high efficiency and reliability.

Application Scenarios & Design Considerations

High Voltage Synchronous Current Mode Step-Down Controller with Adjustable Operating Frequency

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