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LTC3859AEUHF#PBF from LINEAR

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LTC3859AEUHF#PBF

Manufacturer: LINEAR

Low IQ, Triple Output, Buck/Buck/Boost Synchronous Controller with Improved Burst Mode Operation

Partnumber Manufacturer Quantity Availability
LTC3859AEUHF#PBF,LTC3859AEUHFPBF LINEAR 61 In Stock

Description and Introduction

Low IQ, Triple Output, Buck/Buck/Boost Synchronous Controller with Improved Burst Mode Operation The LTC3859AEUHF#PBF is a synchronous step-down DC/DC controller manufactured by Linear Technology (now part of Analog Devices).  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 38V  
- **Output Voltage Range:** 0.8V to 5.5V  
- **Switching Frequency Range:** 50kHz to 900kHz  
- **Maximum Output Current:** Up to 20A (dependent on external components)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 38-Lead QFN (5mm × 7mm)  

### **Descriptions:**  
- The LTC3859AEUHF#PBF is a high-performance, dual-output, synchronous step-down switching regulator controller.  
- It drives all N-channel power MOSFET stages and is designed for high-efficiency power conversion.  
- Features include adjustable current limit, programmable soft-start, and tracking capability for sequencing multiple rails.  

### **Features:**  
- **Wide Input Voltage Range:** Supports 4.5V to 38V operation.  
- **Dual Outputs:** Can control two independent power stages.  
- **Programmable Frequency:** Adjustable from 50kHz to 900kHz.  
- **Phase-Lockable Oscillator:** Allows synchronization to an external clock.  
- **Precision Reference:** 0.8V ±1% over temperature.  
- **Current Mode Control:** Ensures fast transient response.  
- **Adjustable Current Limit:** Enhances system protection.  
- **Programmable Soft-Start:** Reduces inrush current.  
- **Power Good Output:** Monitors output voltage status.  
- **Thermal Shutdown:** Protects against overheating.  

This controller is commonly used in industrial, automotive, and telecom applications requiring high-efficiency power conversion.

Application Scenarios & Design Considerations

Low IQ, Triple Output, Buck/Buck/Boost Synchronous Controller with Improved Burst Mode Operation

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