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LM5574MT from NS,National Semiconductor

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LM5574MT

Manufacturer: NS

SIMPLE SWITCHER? 75V, 0.5A Step-Down Switching Regulator 16-TSSOP -40 to 125

Partnumber Manufacturer Quantity Availability
LM5574MT NS 5947 In Stock

Description and Introduction

SIMPLE SWITCHER? 75V, 0.5A Step-Down Switching Regulator 16-TSSOP -40 to 125 The LM5574MT is a step-down switching regulator manufactured by Texas Instruments (formerly National Semiconductor, NS).  

### **Specifications:**  
- **Input Voltage Range:** 6V to 75V  
- **Output Voltage Range:** Adjustable down to 1.225V  
- **Output Current:** Up to 0.5A  
- **Switching Frequency:** Adjustable from 50kHz to 500kHz  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TSSOP-16 (MT)  

### **Descriptions:**  
The LM5574MT is a buck (step-down) DC-DC converter designed for high-voltage applications. It integrates a high-side N-channel MOSFET and features a constant on-time (COT) control scheme for fast transient response.  

### **Features:**  
- **Wide Input Voltage Range (6V to 75V)**  
- **Integrated 0.5A N-Channel MOSFET**  
- **Adjustable Output Voltage**  
- **Adjustable Switching Frequency (50kHz to 500kHz)**  
- **Cycle-by-Cycle Current Limiting**  
- **Thermal Shutdown Protection**  
- **Low Quiescent Current (Typ. 2.5mA)**  
- **Soft-Start Functionality**  
- **Synchronous Rectification for Improved Efficiency**  

This regulator is commonly used in industrial, automotive, and telecom applications requiring efficient power conversion from high-voltage sources.

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