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L7981ATR from ST,ST Microelectronics

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L7981ATR

Manufacturer: ST

3 A step-down switching regulator

Partnumber Manufacturer Quantity Availability
L7981ATR ST 12 In Stock

Description and Introduction

3 A step-down switching regulator The part **L7981ATR** is manufactured by **STMicroelectronics (ST)**.  

### **Specifications:**  
- **Type:** Synchronous Buck Converter  
- **Input Voltage Range:** 4.5V to 36V  
- **Output Voltage Range:** Adjustable from 0.8V to VIN  
- **Output Current:** Up to 1.5A  
- **Switching Frequency:** Adjustable from 300kHz to 2.2MHz  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +150°C  
- **Package:** PowerSO-8  

### **Descriptions:**  
The **L7981ATR** is a step-down DC-DC converter with synchronous rectification, designed for high efficiency and compact power supply solutions. It integrates low RDS(on) power MOSFETs and supports adjustable output voltage.  

### **Features:**  
- **Wide Input Voltage Range:** 4.5V to 36V  
- **High Efficiency (up to 95%)**  
- **Adjustable Output Voltage (0.8V to VIN)**  
- **Adjustable Switching Frequency (300kHz to 2.2MHz)**  
- **Internal Soft-Start**  
- **Overcurrent, Overtemperature, and Undervoltage Lockout Protection**  
- **Synchronous Rectification for Improved Efficiency**  
- **Low Quiescent Current in Standby Mode**  

This information is based on STMicroelectronics' official datasheet for the L7981ATR.

Application Scenarios & Design Considerations

3 A step-down switching regulator

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