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L5985 from ST,ST Microelectronics

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L5985

Manufacturer: ST

Up to 2 A step down switching regulator

Partnumber Manufacturer Quantity Availability
L5985 ST 1700 In Stock

Description and Introduction

Up to 2 A step down switching regulator The L5985 is a step-down monolithic power switching regulator manufactured by STMicroelectronics. Here are the key specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**  
- **Input Voltage Range:** 2.9 V to 18 V  
- **Output Voltage Range:** 0.6 V to VIN  
- **Output Current:** Up to 1.5 A  
- **Switching Frequency:** Adjustable from 250 kHz to 1 MHz (external synchronization possible)  
- **Efficiency:** Up to 93%  
- **Quiescent Current:** 70 µA (typical)  
- **Operating Temperature Range:** -40°C to +150°C (junction temperature)  
- **Package:** PowerSO-8, SO-8  

### **Descriptions:**  
- The L5985 is a synchronous step-down DC-DC converter with integrated power MOSFETs.  
- It operates in PWM mode at medium-to-high loads and automatically switches to PFM mode at light loads for improved efficiency.  
- The device includes internal soft-start, overcurrent protection, and thermal shutdown.  

### **Features:**  
- **Synchronous Rectification:** Improves efficiency by reducing power dissipation.  
- **Adjustable Output Voltage:** Set via an external resistor divider.  
- **Programmable Switching Frequency:** Allows optimization for efficiency or size.  
- **Low Dropout Operation:** Maintains regulation even when VIN is close to VOUT.  
- **Internal Soft-Start:** Limits inrush current during startup.  
- **Overcurrent & Thermal Protection:** Safeguards the device and load.  
- **External Clock Synchronization:** Supports synchronization with an external clock signal.  

This information is strictly based on the manufacturer's datasheet for the L5985.

Application Scenarios & Design Considerations

Up to 2 A step down switching regulator

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