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LTC1149-3.3 from LINEAR

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LTC1149-3.3

Manufacturer: LINEAR

High Efficiency Synchronous Step-Down Switching Regulators

Partnumber Manufacturer Quantity Availability
LTC1149-3.3,LTC114933 LINEAR 98 In Stock

Description and Introduction

High Efficiency Synchronous Step-Down Switching Regulators The LTC1149-3.3 is a high-efficiency, synchronous step-down switching regulator manufactured by Linear Technology (now part of Analog Devices). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Output Voltage:** Fixed 3.3V  
- **Input Voltage Range:** 4V to 12V  
- **Output Current:** Up to 1A  
- **Switching Frequency:** 200kHz  
- **Efficiency:** Up to 90%  
- **Quiescent Current:** 1.5mA (typical)  
- **Dropout Voltage:** 300mV (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-Pin SOIC  

### **Descriptions:**
- The LTC1149-3.3 is a fixed-output, synchronous buck converter optimized for high efficiency and low power dissipation.  
- It uses a synchronous rectification topology to minimize power loss, making it suitable for battery-powered applications.  
- The regulator includes internal power switches, eliminating the need for external Schottky diodes.  
- It features Burst Mode® operation for improved efficiency at light loads.  

### **Features:**
- **Synchronous Operation:** Reduces power loss compared to traditional diode-based designs.  
- **Burst Mode® Operation:** Enhances efficiency at light loads.  
- **Low Dropout:** Allows operation with input voltages close to the output.  
- **Internal Power Switches:** Simplifies design by eliminating external diodes.  
- **Short-Circuit Protection:** Improves reliability under fault conditions.  
- **Wide Input Range:** Supports 4V to 12V input, making it versatile for various power sources.  
- **Compact Design:** 8-pin SOIC package for space-constrained applications.  

This regulator is commonly used in portable electronics, embedded systems, and other applications requiring efficient power conversion.

Application Scenarios & Design Considerations

High Efficiency Synchronous Step-Down Switching Regulators

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