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L5981 from ST,ST Microelectronics

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L5981

Manufacturer: ST

Up to 1 A step down switching regulator

Partnumber Manufacturer Quantity Availability
L5981 ST 255 In Stock

Description and Introduction

Up to 1 A step down switching regulator The L5981 is a step-down monolithic power switching regulator manufactured by STMicroelectronics. Here are its key specifications, descriptions, and features based on Ic-phoenix technical data files:

### **Specifications:**  
- **Input Voltage Range:** 2.9V to 18V  
- **Output Voltage Range:** 0.6V to VIN  
- **Output Current:** Up to 1.5A  
- **Switching Frequency:** Adjustable from 250kHz to 1MHz  
- **Efficiency:** Up to 93%  
- **Quiescent Current:** 70µA (typical) in standby mode  
- **Operating Temperature Range:** -40°C to +150°C  
- **Package:** HSOP-8 (Exposed Pad)  

### **Descriptions:**  
- The L5981 is a synchronous step-down DC-DC converter with integrated power MOSFETs.  
- It is designed for low-voltage applications requiring high efficiency and compact size.  
- Features internal soft-start and over-temperature protection.  
- Suitable for battery-powered devices, industrial applications, and embedded systems.  

### **Features:**  
- **Synchronous Rectification:** Improves efficiency by reducing power losses.  
- **Adjustable Frequency:** Allows optimization for efficiency or component size.  
- **PWM/PFM Mode:** Automatic transition for improved efficiency at light loads.  
- **Internal Compensation:** Simplifies design with fewer external components.  
- **Protection Features:** Overcurrent, thermal shutdown, and undervoltage lockout (UVLO).  
- **Soft-Start:** Prevents inrush current at startup.  

This information is based on STMicroelectronics' official documentation for the L5981.

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