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LTC3728LEUH-1 from LINEAR

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LTC3728LEUH-1

Manufacturer: LINEAR

Dual, 550kHz, 2-Phase Synchronous Regulator

Partnumber Manufacturer Quantity Availability
LTC3728LEUH-1,LTC3728LEUH1 LINEAR 294 In Stock

Description and Introduction

Dual, 550kHz, 2-Phase Synchronous Regulator The LTC3728LEUH-1 is a PolyPhase synchronous step-down switching regulator controller manufactured by Linear Technology (now part of Analog Devices). Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 36V  
- **Output Voltage Range:** 0.8V to 5.5V (adjustable)  
- **Switching Frequency:** 50kHz to 600kHz (programmable)  
- **Maximum Duty Cycle:** 98%  
- **Operating Temperature Range:** -40°C to 85°C  
- **Package:** 32-Lead QFN (5mm × 5mm)  
- **Efficiency:** Up to 95%  
- **Phase Configurations:** 1, 2, or 3-phase operation  

### **Descriptions:**  
- The LTC3728LEUH-1 is a high-performance, multi-phase synchronous buck controller designed for high-current, low-voltage applications.  
- It supports PolyPhase operation (up to three phases) for reduced input/output ripple and improved thermal performance.  
- The device includes adaptive voltage positioning (AVP) for transient response optimization.  
- It features a precision reference and differential remote sensing for accurate output voltage regulation.  

### **Features:**  
- **Multi-Phase Operation:** Scalable to 1, 2, or 3 phases for high-current applications.  
- **Adaptive Voltage Positioning (AVP):** Enhances transient response.  
- **Programmable Frequency:** Adjustable from 50kHz to 600kHz.  
- **Differential Remote Sensing:** Ensures precise output voltage regulation.  
- **Current Mode Control:** Provides excellent line and load regulation.  
- **Short-Circuit Protection:** Prevents damage during fault conditions.  
- **External Synchronization Capability:** Allows synchronization to an external clock.  
- **Low Shutdown Current:** <1µA in shutdown mode.  
- **Wide Input Voltage Range:** Supports 4.5V to 36V operation.  

The LTC3728LEUH-1 is commonly used in high-power applications such as servers, telecom systems, and industrial power supplies.

Application Scenarios & Design Considerations

Dual, 550kHz, 2-Phase Synchronous Regulator
Partnumber Manufacturer Quantity Availability
LTC3728LEUH-1,LTC3728LEUH1 LT 1526 In Stock

Description and Introduction

Dual, 550kHz, 2-Phase Synchronous Regulator The LTC3728LEUH-1 is a PolyPhase synchronous buck switching regulator controller manufactured by Linear Technology (now part of Analog Devices).  

### **Key Specifications:**  
- **Input Voltage Range:** 4.5V to 36V  
- **Output Voltage Range:** 0.6V to 5.5V  
- **Switching Frequency:** Up to 550kHz per phase  
- **Number of Phases:** 2-phase operation  
- **Efficiency:** High efficiency due to synchronous rectification  
- **Package:** 32-Lead QFN (5mm × 5mm)  

### **Descriptions:**  
- Designed for high-current, low-voltage applications  
- Supports PolyPhase operation for reduced input/output ripple  
- Includes adaptive voltage positioning for improved transient response  
- Features adjustable current limit and soft-start  

### **Features:**  
- **True PolyPhase Operation:** Balances currents between phases  
- **Adaptive Voltage Positioning:** Enhances transient response  
- **Programmable Switching Frequency:** Up to 550kHz per phase  
- **Differential Remote Sensing:** Ensures accurate output regulation  
- **Current Mode Control:** Provides fast transient response  
- **Wide Input Voltage Range:** 4.5V to 36V  
- **Short-Circuit Protection:** Improves system reliability  
- **Thermal Shutdown:** Prevents overheating  

This information is based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

Dual, 550kHz, 2-Phase Synchronous Regulator

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