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LM3405XMK from NS,National Semiconductor

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LM3405XMK

Manufacturer: NS

1.6MHz, 1A Constant Current Buck Regulator for Powering LEDs

Partnumber Manufacturer Quantity Availability
LM3405XMK NS 7970 In Stock

Description and Introduction

1.6MHz, 1A Constant Current Buck Regulator for Powering LEDs The LM3405XMK is a step-down DC-DC converter manufactured by Texas Instruments (NS).  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 20V  
- **Output Voltage Range:** Adjustable down to 0.8V  
- **Output Current:** Up to 1A  
- **Switching Frequency:** 1.6MHz (typical)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 6-Pin SOT-23 (XMK)  

### **Descriptions and Features:**  
- **Buck Regulator:** Converts higher input voltage to a lower regulated output voltage.  
- **Integrated N-Channel MOSFET:** Reduces external component count.  
- **Current Mode Control:** Provides fast transient response and stable operation.  
- **Adjustable Output:** Uses external feedback resistors for flexibility.  
- **Thermal Shutdown & Overcurrent Protection:** Enhances reliability.  
- **Low Shutdown Current (<1μA):** Improves power efficiency in standby mode.  
- **Compact Design:** Suitable for space-constrained applications.  

This information is sourced from Texas Instruments' official documentation. Let me know if you need further details.

Application Scenarios & Design Considerations

1.6MHz, 1A Constant Current Buck Regulator for Powering LEDs

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