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LTC3805EDD#PBF from LT

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LTC3805EDD#PBF

Manufacturer: LT

Adjustable Frequency Current Mode Flyback DC/DC Controller

Partnumber Manufacturer Quantity Availability
LTC3805EDD#PBF,LTC3805EDDPBF LT 6776 In Stock

Description and Introduction

Adjustable Frequency Current Mode Flyback DC/DC Controller The LTC3805EDD#PBF is a high-efficiency, low-noise synchronous step-down switching regulator controller manufactured by Linear Technology (now part of Analog Devices).  

### **Specifications:**  
- **Input Voltage Range:** 4V to 30V  
- **Output Voltage Range:** 0.8V to 5V (adjustable)  
- **Switching Frequency:** Up to 1MHz (adjustable)  
- **Maximum Duty Cycle:** 100%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** DFN-10 (3mm × 3mm)  
- **Control Method:** Current-mode PWM  
- **Efficiency:** Up to 95%  
- **Low Quiescent Current:** 1.5mA (typical)  

### **Descriptions:**  
The LTC3805EDD#PBF is designed for high-efficiency step-down DC/DC conversion, providing precise output voltage regulation. It drives external N-channel MOSFETs and supports synchronous rectification for improved efficiency.  

### **Features:**  
- **Adjustable Frequency:** Allows optimization for efficiency and component size.  
- **100% Duty Cycle Operation:** Ensures low dropout performance.  
- **Current-Mode Control:** Provides fast transient response and stable operation.  
- **Internal Soft-Start:** Reduces inrush current during startup.  
- **Synchronizable:** Can be synchronized to an external clock.  
- **Short-Circuit Protection:** Enhances system reliability.  
- **Low Shutdown Current:** <1µA for power-saving applications.  

This regulator is suitable for applications such as telecom, industrial power supplies, and battery-powered systems.

Application Scenarios & Design Considerations

Adjustable Frequency Current Mode Flyback DC/DC Controller
Partnumber Manufacturer Quantity Availability
LTC3805EDD#PBF,LTC3805EDDPBF LINEAR 136 In Stock

Description and Introduction

Adjustable Frequency Current Mode Flyback DC/DC Controller The LTC3805EDD#PBF is a high-efficiency 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 5.5V (adjustable)  
- **Switching Frequency:** Up to 600kHz (programmable)  
- **Maximum Duty Cycle:** 100%  
- **Operating Temperature Range:** -40°C to 85°C  
- **Package:** 10-Lead DFN (3mm × 3mm)  
- **Control Method:** Current-mode PWM  
- **Synchronous Rectification:** Yes  
- **Low Quiescent Current:** ~100µA (when disabled)  

### **Descriptions:**  
The LTC3805EDD#PBF is designed for high-efficiency DC/DC conversion in applications requiring high input voltage and low output voltage. It drives external N-channel MOSFETs to optimize power conversion efficiency. The controller features programmable soft-start, adjustable switching frequency, and current-mode control for fast transient response.  

### **Features:**  
- **Wide Input Voltage Range:** Supports 4V to 36V operation.  
- **High Efficiency:** Synchronous rectification minimizes power loss.  
- **Adjustable Output Voltage:** Set via external resistor divider.  
- **Programmable Frequency:** Allows optimization for efficiency or component size.  
- **100% Duty Cycle Operation:** Suitable for low dropout conditions.  
- **Current-Mode Control:** Improves transient response and loop stability.  
- **Soft-Start Function:** Reduces inrush current during startup.  
- **Power Good Indicator:** Monitors output voltage status.  
- **Low Shutdown Current:** Consumes minimal power when disabled.  

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

Application Scenarios & Design Considerations

Adjustable Frequency Current Mode Flyback DC/DC Controller

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