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LM2651MTCX-3.3 from NS,National Semiconductor

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LM2651MTCX-3.3

Manufacturer: NS

1.5A High Efficiency Switching Regulator

Partnumber Manufacturer Quantity Availability
LM2651MTCX-3.3,LM2651MTCX33 NS 10000 In Stock

Description and Introduction

1.5A High Efficiency Switching Regulator The LM2651MTCX-3.3 is a switching regulator manufactured by National Semiconductor (NS). Below are its specifications, descriptions, and features:  

### **Specifications:**  
- **Output Voltage:** 3.3V (fixed)  
- **Input Voltage Range:** 4V to 14V  
- **Output Current:** Up to 1.5A  
- **Switching Frequency:** 300kHz (adjustable)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 16-TSSOP (Thermal Shrink Small Outline Package)  
- **Topology:** Buck (Step-Down) Converter  
- **Control Method:** PWM (Pulse Width Modulation)  

### **Descriptions:**  
The LM2651MTCX-3.3 is a high-efficiency, step-down DC-DC switching regulator designed for applications requiring a fixed 3.3V output. It integrates a high-side P-channel MOSFET and a low-side N-channel MOSFET, reducing external component count. The device features adjustable switching frequency, soft-start, and thermal shutdown protection.  

### **Features:**  
- **Integrated Power MOSFETs** (P-Channel high-side, N-Channel low-side)  
- **Adjustable Switching Frequency** (300kHz default)  
- **Low Quiescent Current** (typically 1.5mA)  
- **Soft-Start Function** (reduces inrush current)  
- **Thermal Shutdown Protection**  
- **Under-Voltage Lockout (UVLO)**  
- **Synchronous Rectification** (improves efficiency)  
- **Short-Circuit Protection**  

This regulator is suitable for battery-powered devices, industrial systems, and embedded applications requiring efficient power conversion.

Application Scenarios & Design Considerations

1.5A High Efficiency Switching Regulator

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