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L5971 from ST,ST Microelectronics

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L5971

Manufacturer: ST

1.5A STEP DOWN SWITCHING REGULATOR

Partnumber Manufacturer Quantity Availability
L5971 ST 924 In Stock

Description and Introduction

1.5A STEP DOWN SWITCHING REGULATOR The L5971 is a step-down switching regulator manufactured by STMicroelectronics. Here are the factual details about its specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 4.4V to 36V  
- **Output Voltage Range:** Adjustable from 1.235V to 35V  
- **Output Current:** Up to 1.5A  
- **Switching Frequency:** 250kHz (fixed)  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +150°C (junction temperature)  
- **Package:** HSOP-8 (Exposed Pad)  

### **Descriptions:**  
- The L5971 is a monolithic step-down switching regulator with an internal power switch.  
- It is designed for DC-DC converter applications, providing high efficiency and low standby current.  
- Includes built-in protection features such as thermal shutdown and current limiting.  

### **Features:**  
- **Internal Power MOSFET:** Reduces external component count.  
- **Adjustable Output Voltage:** Set via external resistor divider.  
- **Low Dropout Operation:** Can operate with a minimal voltage difference between input and output.  
- **Soft-Start Function:** Prevents inrush current at startup.  
- **Synchronizable Switching Frequency:** Can be synchronized to an external clock.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation under low input voltage conditions.  
- **Thermal Shutdown Protection:** Prevents damage from overheating.  

For more precise details, refer to the official STMicroelectronics datasheet.

Application Scenarios & Design Considerations

1.5A STEP DOWN SWITCHING REGULATOR

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