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LM2725M from NS,National Semiconductor

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LM2725M

Manufacturer: NS, NSC

High Speed Synchronous MOSFET Driver

Partnumber Manufacturer Quantity Availability
LM2725M NS, NSC 42740 In Stock

Description and Introduction

High Speed Synchronous MOSFET Driver The LM2725M is a synchronous buck regulator controller manufactured by National Semiconductor (NSC). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 36V  
- **Output Voltage Range:** Adjustable from 0.6V to 90% of VIN  
- **Switching Frequency:** Adjustable up to 1MHz  
- **Output Current:** Up to 15A (with external MOSFETs)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 16-Pin SOIC  

### **Descriptions:**  
- The LM2725M is a high-performance synchronous buck regulator controller designed for step-down DC-DC conversion.  
- It drives external N-channel MOSFETs for high-efficiency power conversion.  
- Features include adjustable switching frequency, soft-start, and overcurrent protection.  

### **Features:**  
- **Adjustable Output Voltage** via external resistor divider  
- **Synchronous Rectification** for improved efficiency  
- **Programmable Soft-Start** to limit inrush current  
- **Overcurrent Protection** with hiccup mode  
- **Adjustable Switching Frequency** (100kHz to 1MHz)  
- **Thermal Shutdown** for overtemperature protection  
- **Under-Voltage Lockout (UVLO)** for safe operation  

This information is based solely on the manufacturer's datasheet for the LM2725M.

Application Scenarios & Design Considerations

High Speed Synchronous MOSFET Driver

Alternative Part Number

  • TPS51225 --: Pin-compatible synchronous buck controller with similar voltage-mode architecture and comparable current capability, widely available from TI.
  • ISL6545 --: Single-phase synchronous buck controller with similar input/output voltage range and gate drive, suitable drop-in for many LM2725 designs.
  • NCP1587 --: Low-cost synchronous buck controller with comparable switching frequency and drive strength, usable as a functional substitute with minor layout review.
  • TL5001CD --: Single-ended PWM controller with similar function and pinout, widely available and a common substitute for LM2725-class controllers.
  • UC3843AN --: Industry-standard current-mode PWM controller usable in similar switching regulator designs, with broad availability and low cost.
  • SG3524N --: Classic PWM control IC with comparable regulation functions, often used as a replacement in older power supply designs.

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