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LM5574QMT from NS,National Semiconductor

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LM5574QMT

Manufacturer: NS

LM5574/LM5574-Q1 SIMPLE SWITCHER? 75V, 0.5A Step-Down Switching Regulator

Partnumber Manufacturer Quantity Availability
LM5574QMT NS 470 In Stock

Description and Introduction

LM5574/LM5574-Q1 SIMPLE SWITCHER? 75V, 0.5A Step-Down Switching Regulator The LM5574QMT is a switching regulator manufactured by Texas Instruments (NS). Below are the factual details from Ic-phoenix technical data files:

### **Manufacturer:**  
- **NS (National Semiconductor, now part of Texas Instruments)**  

### **Specifications:**  
- **Type:** Buck Regulator (Step-Down DC-DC Converter)  
- **Input Voltage Range:** 6V to 75V  
- **Output Voltage Range:** Adjustable down to 1.225V  
- **Output Current:** Up to 0.5A  
- **Switching Frequency:** Adjustable up to 500kHz  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 16-Pin TSSOP (QMT)  

### **Descriptions:**  
- The LM5574QMT is a wide-input voltage buck regulator designed for high-efficiency step-down conversion.  
- It integrates a high-side N-channel MOSFET and features a constant on-time (COT) control scheme for fast transient response.  
- Suitable for industrial, automotive, and telecom applications requiring stable power conversion.  

### **Features:**  
- **Wide Input Voltage Range (6V to 75V)**  
- **Adjustable Output Voltage (1.225V to 70V)**  
- **Integrated High-Side MOSFET**  
- **Adjustable Switching Frequency (100kHz to 500kHz)**  
- **Cycle-by-Cycle Current Limiting**  
- **Thermal Shutdown Protection**  
- **Low Quiescent Current (3.5mA typical)**  
- **Soft-Start Functionality**  

This information is strictly based on the manufacturer's datasheet and technical documentation.

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