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LTC3851 from LT

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LTC3851

Manufacturer: LT

Synchronous Step-Down Switching Regulator Controller

Partnumber Manufacturer Quantity Availability
LTC3851 LT 278 In Stock

Description and Introduction

Synchronous Step-Down Switching Regulator Controller The LTC3851 is a high-performance, dual-output synchronous step-down switching regulator controller manufactured by Linear Technology (now part of Analog Devices).  

### **Key Specifications:**  
- **Input Voltage Range:** 4.5V to 38V  
- **Output Voltage Range:** 0.8V to 5.5V (adjustable)  
- **Switching Frequency Range:** 50kHz to 900kHz (synchronizable up to 1.2MHz)  
- **Maximum Output Current:** Up to 20A per phase (with external MOSFETs)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to 125°C  
- **Package:** 38-Lead TSSOP  

### **Descriptions and Features:**  
- **Dual-Output Controller:** Independently controls two synchronous buck regulators.  
- **PolyPhase® Operation:** Supports multi-phase operation for reduced input/output ripple.  
- **Precision Reference:** 0.8V ±1% reference voltage over temperature.  
- **Programmable Soft-Start:** Adjustable for controlled startup.  
- **Current Mode Control:** Ensures fast transient response and stability.  
- **Differential Remote Sensing:** Improves output voltage accuracy.  
- **Power Good Indicators:** Monitors output status.  
- **Optional External Clock Synchronization:** Reduces noise interference.  
- **Low Shutdown Current:** <1µA in shutdown mode.  
- **Wide Input Range:** Suitable for automotive, industrial, and telecom applications.  

The LTC3851 is designed for high-efficiency, high-power-density applications such as servers, telecom equipment, and industrial power systems.

Partnumber Manufacturer Quantity Availability
LTC3851 LT Pb-free 53 In Stock

Description and Introduction

Synchronous Step-Down Switching Regulator Controller The LTC3851 is a high-performance, PolyPhase synchronous step-down switching regulator controller. Below are the factual details from Ic-phoenix technical data files:  

### **Manufacturer**  
- **Manufacturer**: Linear Technology (now part of Analog Devices)  

### **Pb-Free Specifications**  
- The LTC3851 is **lead-free (Pb-free)** and complies with the RoHS (Restriction of Hazardous Substances) directive.  

### **Descriptions**  
- The LTC3851 is a **dual-output, PolyPhase synchronous step-down DC/DC controller**.  
- It drives **all N-channel power MOSFETs** and is designed for high-efficiency power conversion.  
- It supports **multiphase operation (up to 12 phases)** for high-current applications.  
- The device operates from a **4.5V to 38V input range**, making it suitable for a wide range of power supply designs.  
- It features **current-mode control with selectable fixed frequency (50kHz to 900kHz) or phase-lockable operation**.  

### **Features**  
- **Wide Input Voltage Range**: 4.5V to 38V  
- **Dual Outputs**: Independent or PolyPhase operation  
- **Adjustable Switching Frequency**: 50kHz to 900kHz  
- **Precision 0.8V Reference Voltage** (±1% over temperature)  
- **Programmable Current Limit**  
- **Differential Remote Sensing** for accurate output voltage regulation  
- **Optional External Clock Synchronization**  
- **Adjustable Soft-Start**  
- **Overvoltage and Undervoltage Protection**  
- **Thermal Shutdown Protection**  
- **Available in a 38-Lead TSSOP Package**  

This information is strictly based on the manufacturer's specifications. Let me know if you need further details.

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