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L5991A. from ST,ST Microelectronics

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L5991A.

Manufacturer: ST

PRIMARY CONTROLLER WITH STANDBY

Partnumber Manufacturer Quantity Availability
L5991A.,L5991A ST 350 In Stock

Description and Introduction

PRIMARY CONTROLLER WITH STANDBY The part **L5991A** is manufactured by **STMicroelectronics**.  

### **Specifications:**  
- **Type:** High-voltage PWM controller  
- **Input Voltage Range:** Up to 18V  
- **Output Voltage:** Adjustable  
- **Switching Frequency:** Up to 1MHz  
- **Operating Temperature Range:** -40°C to +150°C  
- **Package:** SO-16 (Surface Mount)  

### **Descriptions and Features:**  
- Designed for **offline and DC-DC converters**  
- **Programmable oscillator** for flexible frequency control  
- **Soft-start** functionality for controlled startup  
- **Overvoltage protection (OVP)** and **undervoltage lockout (UVLO)**  
- **Current-mode control** for improved stability  
- **Low standby current** for energy efficiency  
- **Synchronous rectification capability**  

This IC is commonly used in **power supply applications**, including **SMPS (Switched-Mode Power Supplies)** and **battery chargers**.  

Would you like additional details on any specific aspect?

Application Scenarios & Design Considerations

PRIMARY CONTROLLER WITH STANDBY

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