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LTC3809EMSE-1 from LT

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LTC3809EMSE-1

Manufacturer: LT

No Rsense, Low Input Voltage, Synchronous DC/DC Controller with Output Tracking

Partnumber Manufacturer Quantity Availability
LTC3809EMSE-1,LTC3809EMSE1 LT 223 In Stock

Description and Introduction

No Rsense, Low Input Voltage, Synchronous DC/DC Controller with Output Tracking The LTC3809EMSE-1 is a high-efficiency, current-mode synchronous step-down switching regulator controller manufactured by Linear Technology (now part of Analog Devices).  

### **Specifications:**  
- **Input Voltage Range:** 4V to 36V  
- **Output Voltage Range:** 0.8V to 24V  
- **Switching Frequency:** Programmable from 50kHz to 900kHz  
- **Maximum Duty Cycle:** 95%  
- **Operating Temperature Range:** -40°C to 85°C  
- **Package:** MSOP-16  

### **Descriptions:**  
The LTC3809EMSE-1 is designed to drive N-channel MOSFETs in a synchronous buck configuration, providing high efficiency and precise output voltage regulation. It features current-mode control for fast transient response and stable operation.  

### **Features:**  
- **Synchronous Operation:** Reduces power loss by replacing the Schottky diode with a MOSFET.  
- **Adjustable Frequency:** Allows optimization for efficiency or component size.  
- **Low Shutdown Current:** <1µA in shutdown mode.  
- **Soft-Start:** Reduces inrush current during startup.  
- **Overcurrent Protection:** Prevents damage during fault conditions.  
- **Wide Input Voltage Range:** Suitable for various applications.  
- **Current-Mode Control:** Ensures stable operation and fast transient response.  

This information is based solely on the manufacturer's datasheet.

Application Scenarios & Design Considerations

No Rsense, Low Input Voltage, Synchronous DC/DC Controller with Output Tracking
Partnumber Manufacturer Quantity Availability
LTC3809EMSE-1,LTC3809EMSE1 LINEAR 1000 In Stock

Description and Introduction

No Rsense, Low Input Voltage, Synchronous DC/DC Controller with Output Tracking The LTC3809EMSE-1 is a high-efficiency, current-mode synchronous step-down switching regulator controller manufactured by Linear Technology (now part of Analog Devices).  

### **Specifications:**  
- **Input Voltage Range:** 4V to 36V  
- **Output Voltage Range:** Adjustable down to 0.8V  
- **Switching Frequency:** Programmable from 50kHz to 900kHz  
- **Maximum Duty Cycle:** 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** MSOP-10 (Exposed Pad)  
- **Current Limit:** Adjustable  
- **Efficiency:** Up to 95%  
- **Synchronous Rectification:** Yes  

### **Descriptions:**  
The LTC3809EMSE-1 is designed for high-efficiency DC/DC conversion in applications requiring wide input voltage ranges. It drives N-channel MOSFETs in a synchronous buck topology, reducing power loss and improving efficiency.  

### **Features:**  
- **Current-Mode Control:** Ensures fast transient response.  
- **Programmable Frequency:** Allows optimization for efficiency or component size.  
- **Low Quiescent Current:** 100μA in shutdown, 1.5mA in operation.  
- **Soft-Start:** Reduces inrush current.  
- **Adjustable Current Limit:** Enhances system protection.  
- **Thermal Shutdown:** Prevents overheating.  
- **External Synchronization Capability:** Reduces noise interference.  

This regulator is commonly used in telecom, industrial, and automotive applications.  

(Source: Linear Technology Datasheet)

Application Scenarios & Design Considerations

No Rsense, Low Input Voltage, Synchronous DC/DC Controller with Output Tracking

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