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LM2574BN from MICREL

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LM2574BN

Manufacturer: MICREL

52kHz Simple 0.5A Buck Regulator

Partnumber Manufacturer Quantity Availability
LM2574BN MICREL 12 In Stock

Description and Introduction

52kHz Simple 0.5A Buck Regulator The LM2574BN is a step-down (buck) switching regulator manufactured by **MICREL** (now part of Microchip Technology). Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 40V  
- **Output Voltage Options:**  
  - Fixed: 3.3V, 5V, 12V, 15V  
  - Adjustable (via external resistors)  
- **Output Current:** Up to 500mA  
- **Switching Frequency:** 52kHz  
- **Efficiency:** Up to 80%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 8-Pin DIP (Dual Inline Package)  

### **Descriptions:**  
- The LM2574BN is a monolithic **buck converter** designed for easy implementation in step-down voltage regulation applications.  
- It integrates a **fixed-frequency PWM controller** with a high-efficiency power switch.  
- Requires minimal external components, simplifying design.  
- Includes built-in **thermal shutdown** and **current limiting** for protection.  

### **Features:**  
- **Low Power Consumption:** Typically 5mA quiescent current.  
- **Internal Frequency Compensation:** Reduces external component count.  
- **Soft-Start Capability:** Minimizes inrush current.  
- **Wide Input Voltage Range:** Suitable for automotive and industrial applications.  
- **Stable with Low-ESR Capacitors:** Works with ceramic or electrolytic output capacitors.  

For detailed application notes, refer to the **MICREL datasheet**.

Application Scenarios & Design Considerations

52kHz Simple 0.5A Buck Regulator

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