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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 ST 50000 In Stock

Description and Introduction

PRIMARY CONTROLLER WITH STANDBY The **L5991A** is a switching regulator controller IC manufactured by **STMicroelectronics**.  

### **Specifications:**  
- **Input Voltage Range:** 8V to 20V  
- **Output Voltage:** Adjustable (depends on external components)  
- **Switching Frequency:** Up to 1MHz (adjustable)  
- **Output Current:** Up to 10A (with external MOSFET)  
- **Duty Cycle:** Up to 100%  
- **Operating Temperature Range:** -40°C to +150°C  
- **Package:** SO-16  

### **Descriptions:**  
The **L5991A** is a high-performance PWM controller designed for DC-DC converter applications. It features a voltage-mode control architecture with soft-start, current limiting, and thermal shutdown protection. It is commonly used in power supplies, industrial systems, and automotive applications.  

### **Features:**  
- **Voltage-Mode PWM Control**  
- **Adjustable Soft-Start**  
- **Undervoltage Lockout (UVLO)**  
- **Programmable Oscillator Frequency**  
- **Current Limiting & Overcurrent Protection**  
- **Thermal Shutdown Protection**  
- **Synchronization Capability**  

This IC is optimized for high-efficiency power conversion and provides reliable performance in demanding environments.

Application Scenarios & Design Considerations

PRIMARY CONTROLLER WITH STANDBY

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