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L5971D from ST,ST Microelectronics

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L5971D

Manufacturer: ST

1.5A STEP DOWN SWITCHING REGULATOR

Partnumber Manufacturer Quantity Availability
L5971D ST 1205 In Stock

Description and Introduction

1.5A STEP DOWN SWITCHING REGULATOR The L5971D is a step-down monolithic power switching regulator manufactured by STMicroelectronics. Below are its key specifications, descriptions, and features based on Ic-phoenix technical data files:

### **Specifications:**  
- **Input Voltage Range:** 4.4V to 36V  
- **Output Voltage Range:** Adjustable from 1.235V to 35V  
- **Output Current:** Up to 1A  
- **Switching Frequency:** 250 kHz (fixed)  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +150°C (junction temperature)  
- **Package:** SO-8 (Exposed Pad)  

### **Descriptions:**  
- The L5971D is a monolithic DC-DC buck converter with an internal power switch.  
- It includes a voltage reference, oscillator, PWM comparator, and thermal shutdown.  
- Designed for step-down applications, it provides a stable output voltage with minimal external components.  

### **Features:**  
- **Internal 1.5A Power Switch**  
- **Low Dropout Operation** (100% duty cycle capable)  
- **Voltage Feed-Forward Compensation** for improved line regulation  
- **Pulse-by-Pulse Current Limiting**  
- **Thermal Shutdown Protection**  
- **Adjustable Soft-Start**  
- **Synchronous Rectification** (external Schottky diode not required)  

For detailed application circuits and performance graphs, refer to the official STMicroelectronics datasheet.

Application Scenarios & Design Considerations

1.5A STEP DOWN SWITCHING REGULATOR

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