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LTC3857IGN-1#PBF from LINEAR

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LTC3857IGN-1#PBF

Manufacturer: LINEAR

Low IQ, Dual, 2-Phase Synchronous Step-Down Controller

Partnumber Manufacturer Quantity Availability
LTC3857IGN-1#PBF,LTC3857IGN1PBF LINEAR 46 In Stock

Description and Introduction

Low IQ, Dual, 2-Phase Synchronous Step-Down Controller The LTC3857IGN-1#PBF 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 38V  
- **Output Voltage Range:** 0.8V to 5.5V  
- **Switching Frequency:** 50kHz to 900kHz (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 SSOP  

### **Descriptions:**  
The LTC3857 is a synchronous step-down switching regulator controller designed for high-efficiency power conversion. It drives N-channel MOSFETs and provides precise output voltage regulation. It features a constant-frequency current-mode architecture and can operate in either forced continuous or pulse-skipping mode for improved efficiency at light loads.  

### **Features:**  
- **Wide Input Voltage Range (4.5V to 38V)**  
- **Adjustable Switching Frequency (50kHz to 900kHz)**  
- **Programmable Soft-Start**  
- **Precision 0.8V Reference (±1% over temperature)**  
- **Optional External Clock Synchronization**  
- **Power Good Output Voltage Monitor**  
- **Overcurrent and Overtemperature Protection**  
- **Low Shutdown Current (<1µA)**  
- **Adjustable Current Limit**  

This device is commonly used in industrial, automotive, and telecommunications applications requiring high-efficiency power conversion.

Application Scenarios & Design Considerations

Low IQ, Dual, 2-Phase Synchronous Step-Down Controller

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