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LTC3851EGN#PBF from LINEAR

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LTC3851EGN#PBF

Manufacturer: LINEAR

Synchronous Step-Down Switching Regulator Controller

Partnumber Manufacturer Quantity Availability
LTC3851EGN#PBF,LTC3851EGNPBF LINEAR 766 In Stock

Description and Introduction

Synchronous Step-Down Switching Regulator Controller The LTC3851EGN#PBF is a high-performance synchronous step-down switching regulator controller manufactured by Linear Technology (now part of Analog Devices).  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 38V  
- **Output Voltage Range:** 0.8V to 5.5V (adjustable)  
- **Switching Frequency Range:** 50kHz to 900kHz (programmable)  
- **Maximum Duty Cycle:** 100%  
- **Operating Temperature Range:** -40°C to 85°C  
- **Package:** 20-Lead SSOP  
- **Topology:** Synchronous Buck Controller  
- **Control Method:** Current Mode Control  
- **Phase-Lockable Frequency Range:** 75kHz to 850kHz  
- **Efficiency:** Up to 95%  
- **Features:**  
  - Adjustable current limit  
  - Power good output  
  - External synchronization capability  
  - Low shutdown current (<1µA)  
  - Programmable soft-start  
  - Differential remote sensing  

### **Descriptions:**  
The LTC3851EGN#PBF is designed for high-efficiency, high-power step-down DC/DC applications. It drives all N-channel power MOSFET stages and provides precise output voltage regulation with current-mode control for fast transient response.  

### **Features:**  
- Wide input voltage range (4.5V to 38V)  
- High efficiency synchronous operation  
- Programmable fixed frequency or synchronizable operation  
- Adjustable current limit with foldback  
- Precision 0.8V reference voltage  
- Low quiescent current in shutdown (<1µA)  
- Power good output for monitoring  
- Differential remote sensing for accurate regulation  
- Programmable soft-start  

This controller is suitable for applications such as telecom, industrial power supplies, and distributed power systems.

Application Scenarios & Design Considerations

Synchronous Step-Down Switching Regulator Controller

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