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LT3837EFE from LT

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LT3837EFE

Manufacturer: LT

Isolated No-Opto Synchronous Flyback Controller

Partnumber Manufacturer Quantity Availability
LT3837EFE LT 950 In Stock

Description and Introduction

Isolated No-Opto Synchronous Flyback Controller The LT3837EFE is a high voltage, current mode DC/DC 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 60V  
- **Output Voltage Range:** Adjustable from 0.8V to 60V  
- **Switching Frequency:** Adjustable from 100kHz to 500kHz  
- **Maximum Duty Cycle:** 96%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 20-Lead TSSOP (Exposed Pad)  

### **Descriptions:**
The LT3837EFE is designed for high voltage step-down (buck) applications, providing precise current mode control for stable operation. It supports synchronous rectification for improved efficiency and includes features for robust power supply designs.

### **Features:**
- **Wide Input Voltage Range:** Supports operation from 4.5V to 60V.  
- **Adjustable Output Voltage:** Configurable from 0.8V to 60V.  
- **Synchronous Rectification:** Enhances efficiency by reducing power loss.  
- **Programmable Switching Frequency:** Allows optimization for efficiency and component size.  
- **Current Mode Control:** Ensures stable operation with fast transient response.  
- **Integrated Error Amplifier:** Simplifies feedback loop design.  
- **Low Shutdown Current:** <1µA in shutdown mode.  
- **Thermal Protection:** Prevents overheating damage.  

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

Application Scenarios & Design Considerations

Isolated No-Opto Synchronous Flyback Controller
Partnumber Manufacturer Quantity Availability
LT3837EFE LTC 140 In Stock

Description and Introduction

Isolated No-Opto Synchronous Flyback Controller The LT3837EFE is a high voltage, high efficiency switching regulator controller manufactured by Linear Technology (LTC). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Input Voltage Range:** 4.5V to 60V  
- **Output Voltage Range:** Adjustable from 0.8V to 60V  
- **Switching Frequency Range:** 100kHz to 500kHz (adjustable)  
- **Maximum Duty Cycle:** 96%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 20-Lead TSSOP (EFE)  

### **Descriptions:**
- The LT3837EFE is a current-mode step-down (buck) switching regulator controller designed for high input voltage applications.  
- It drives an external N-channel MOSFET and supports synchronous rectification for improved efficiency.  
- The device includes features for robust operation, such as programmable soft-start, cycle-by-cycle current limiting, and thermal shutdown.  

### **Features:**
- **Wide Input Voltage Range:** Supports operation from 4.5V to 60V.  
- **High Efficiency:** Up to 95% efficiency with synchronous rectification.  
- **Adjustable Frequency:** Allows optimization for efficiency and component size.  
- **Programmable Soft-Start:** Reduces inrush current during startup.  
- **Current Mode Control:** Provides fast transient response and stable operation.  
- **Low Quiescent Current:** 2.5mA typical when not switching.  
- **Thermal Shutdown Protection:** Prevents damage from overheating.  
- **Synchronizable:** Can be synchronized to an external clock.  

The LT3837EFE is commonly used in industrial, automotive, and telecom applications requiring high voltage step-down conversion.

Application Scenarios & Design Considerations

Isolated No-Opto Synchronous Flyback Controller

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