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LM3151MH-3.3 from NS,National Semiconductor

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LM3151MH-3.3

Manufacturer: NS

SIMPLE SWITCHER? CONTROLLER, High Input Voltage Synchronous Step-Down

Partnumber Manufacturer Quantity Availability
LM3151MH-3.3,LM3151MH33 NS 12132 In Stock

Description and Introduction

SIMPLE SWITCHER? CONTROLLER, High Input Voltage Synchronous Step-Down The LM3151MH-3.3 is a step-down DC-DC controller manufactured by Texas Instruments (formerly National Semiconductor, NS).  

### **Specifications:**  
- **Output Voltage:** 3.3V (fixed)  
- **Input Voltage Range:** 6V to 42V  
- **Switching Frequency:** Adjustable (50 kHz to 1 MHz)  
- **Output Current:** Up to 15A (with external FETs)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 20-Pin HTSSOP (PowerPAD™)  

### **Descriptions:**  
The LM3151MH-3.3 is a high-performance synchronous buck controller designed for high-current, high-efficiency applications. It provides a fixed 3.3V output and supports wide input voltage operation, making it suitable for industrial, automotive, and telecom applications.  

### **Features:**  
- **Wide Input Voltage Range (6V to 42V)**  
- **Adjustable Switching Frequency (50 kHz to 1 MHz)**  
- **Precision 3.3V Output Voltage (±1.5% Accuracy)**  
- **Integrated MOSFET Drivers**  
- **Programmable Soft-Start**  
- **Cycle-by-Cycle Current Limiting**  
- **Thermal Shutdown Protection**  
- **PowerPAD™ Package for Enhanced Thermal Performance**  

This controller requires external power MOSFETs, an inductor, and capacitors to complete the power supply design.

Application Scenarios & Design Considerations

SIMPLE SWITCHER? CONTROLLER, High Input Voltage Synchronous Step-Down

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