High Efficiency, 2-Phase Synchronous Step-Down Switching Regulator The **LTC1628IG-PG#PBF** is a dual monolithic synchronous step-down switching regulator controller manufactured by **Linear Technology (now part of Analog Devices)**.  

### **Key Specifications:**  
- **Input Voltage Range:** 4V to 36V  
- **Output Voltage Range:** 0.8V to 5.5V (adjustable)  
- **Switching Frequency:** Up to 550kHz (synchronizable)  
- **Dual Output Configuration:** Two independent controllers  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 28-Lead SSOP  

### **Descriptions:**  
- Designed for high-efficiency step-down DC/DC conversion.  
- Features **current-mode control** for fast transient response.  
- Includes **synchronous rectification** for improved efficiency.  
- **Adjustable soft-start** to limit inrush current.  
- **Phase-lockable oscillator** for noise-sensitive applications.  

### **Features:**  
- **Wide Input Voltage Range (4V to 36V)**  
- **Dual Independent Controllers**  
- **Low Dropout Operation (100% Duty Cycle)**  
- **Programmable Current Limit**  
- **Short-Circuit Protection**  
- **Synchronizable Switching Frequency (250kHz to 550kHz)**  
- **Adjustable Soft-Start**  
- **Thermal Shutdown Protection**  

This regulator is commonly used in **distributed power systems, telecom/datacom equipment, and industrial applications**.  

*(Source: Linear Technology Datasheet for LTC1628IG-PG#PBF.)*

High Efficiency, 2-Phase Synchronous Step-Down Switching Regulator