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LT3825EFE from LINEAR

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LT3825EFE

Manufacturer: LINEAR

Isolated No-Opto Synchronous Flyback Controller with Wide Input Supply Range

Partnumber Manufacturer Quantity Availability
LT3825EFE LINEAR 50 In Stock

Description and Introduction

Isolated No-Opto Synchronous Flyback Controller with Wide Input Supply Range The LT3825EFE is a switching regulator controller manufactured by Linear Technology (now part of Analog Devices).  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 60V  
- **Output Voltage:** Adjustable  
- **Switching Frequency:** 50kHz to 250kHz (programmable)  
- **Topology:** Flyback, Forward, or SEPIC  
- **Duty Cycle:** Up to 96%  
- **Operating Temperature Range:** -40°C to 125°C  
- **Package:** 16-Lead TSSOP (Exposed Pad)  

### **Descriptions:**  
The LT3825EFE is a high-performance current-mode PWM controller designed for isolated power supply applications. It provides precise regulation and supports multiple topologies, including flyback, forward, and SEPIC.  

### **Features:**  
- **Wide Input Voltage Range:** Supports 4.5V to 60V input.  
- **Programmable Frequency:** Adjustable from 50kHz to 250kHz.  
- **Current-Mode Control:** Ensures stable operation and fast transient response.  
- **Soft-Start Function:** Reduces inrush current during startup.  
- **Synchronous Rectifier Drive:** Improves efficiency in isolated designs.  
- **High Duty Cycle Operation:** Up to 96% for better efficiency in low-dropout conditions.  
- **Thermally Enhanced Package:** TSSOP-16 with exposed pad for improved heat dissipation.  

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

Partnumber Manufacturer Quantity Availability
LT3825EFE LT 1279 In Stock

Description and Introduction

Isolated No-Opto Synchronous Flyback Controller with Wide Input Supply Range The LT3825EFE is a high voltage, no-opto flyback 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 100V  
- **Output Voltage:** Adjustable (depends on external components)  
- **Switching Frequency:** 50kHz to 250kHz (programmable)  
- **Maximum Duty Cycle:** 90%  
- **Output Power:** Up to 100W (depending on design)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 16-Lead TSSOP (Exposed Pad)  

### **Descriptions:**  
- The LT3825EFE is a current-mode flyback controller that eliminates the need for an optocoupler by sensing the output voltage directly from the primary-side flyback waveform.  
- It is designed for isolated power supplies, providing accurate regulation without secondary-side feedback.  
- The IC includes features like soft-start, cycle-by-cycle current limiting, and thermal shutdown for robust operation.  

### **Features:**  
- **Primary-Side Sensing:** No optocoupler required for feedback.  
- **Wide Input Voltage Range:** Supports 4.5V to 100V input.  
- **Programmable Frequency:** Adjustable from 50kHz to 250kHz.  
- **Soft-Start:** Reduces inrush current during startup.  
- **Cycle-by-Cycle Current Limiting:** Protects against overloads.  
- **Thermal Shutdown:** Prevents overheating.  
- **Synchronous Rectifier Drive:** Improves efficiency in high-power designs.  
- **Low Quiescent Current:** Enhances efficiency in light-load conditions.  

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

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