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LT3509IDE#PBF from LINEAR

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LT3509IDE#PBF

Manufacturer: LINEAR

Dual 36V, 700mA Step-Down Regulator

Partnumber Manufacturer Quantity Availability
LT3509IDE#PBF LINEAR 202 In Stock

Description and Introduction

Dual 36V, 700mA Step-Down Regulator The LT3509IDE#PBF is a dual monolithic step-down switching regulator manufactured by Linear Technology (now part of Analog Devices). Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 3.6V to 25V  
- **Output Voltage Range:** Adjustable from 0.8V to 24V  
- **Output Current:** Up to 2.5A per channel  
- **Switching Frequency:** 1MHz (fixed)  
- **Efficiency:** Up to 94%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 16-Lead DFN (5mm × 3mm × 0.75mm)  

### **Descriptions:**  
- The LT3509IDE#PBF is a dual-channel step-down DC/DC converter with internal power switches.  
- It is designed for high-efficiency, compact power supply solutions.  
- Each channel operates independently with adjustable output voltage and current limit.  
- The device includes features like soft-start, frequency synchronization, and thermal shutdown.  

### **Features:**  
- **Dual Independent Regulators:** Two 2.5A step-down regulators in one package.  
- **Synchronous Rectification:** Improves efficiency and reduces external component count.  
- **Adjustable Frequency Synchronization:** Allows synchronization to an external clock.  
- **Low Dropout Operation:** Maintains regulation even when the input voltage is close to the output.  
- **Current Mode Control:** Ensures fast transient response and stable operation.  
- **Thermal Shutdown Protection:** Prevents damage from overheating.  
- **Soft-Start Function:** Reduces inrush current during startup.  

This device is suitable for applications such as industrial power supplies, automotive systems, and distributed power architectures.

Application Scenarios & Design Considerations

Dual 36V, 700mA Step-Down Regulator

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