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LM3411M5-3.3 from NSC,National Semiconductor

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LM3411M5-3.3

Manufacturer: NSC, NS

Precision Secondary Regulator/Driver
Partnumber Manufacturer Quantity Availability
LM3411M5-3.3,LM3411M533 NSC, NS 3042 In Stock

Description and Introduction

Precision Secondary Regulator/Driver The LM3411M5-3.3 is a step-down DC-DC converter manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Voltage:** 3.3V (fixed)  
- **Output Current:** Up to 525mA  
- **Switching Frequency:** 1.6MHz (typical)  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SOT-23-5  

### **Descriptions:**  
The LM3411M5-3.3 is a high-efficiency, step-down DC-DC converter designed for low-power applications. It integrates a power switch and synchronous rectifier, reducing external component count. The fixed 3.3V output makes it suitable for powering microcontrollers, sensors, and other low-voltage devices.  

### **Features:**  
- **Integrated Power Switch & Synchronous Rectifier**  
- **Low Quiescent Current (17µA typical)**  
- **Pulse-Width Modulation (PWM) Operation**  
- **Thermal Shutdown Protection**  
- **Short-Circuit Protection**  
- **Small Footprint (SOT-23-5 Package)**  

This device is optimized for battery-powered and portable applications requiring stable 3.3V power.

Application Scenarios & Design Considerations

Precision Secondary Regulator/Driver

Alternative Part Number

  • TLV431ACDBZR --: Adjustable shunt regulator in SOT-23, widely used as a 3.3V reference replacement with good accuracy and availability.
  • AZ431AN-BTRE1 --: Low-cost adjustable shunt regulator in SOT-23 that can be set to 3.3V, pin-compatible with common reference circuits.
  • LM4040CIM3-3.3 --: Fixed 3.3V precision shunt reference in SOT-23, directly matches the 3.3V output requirement of the original part.
  • LM431AIM3X --: Classic adjustable shunt regulator in SOT-23 package, similar reference function and broad availability as a fallback.

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