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LM2734XMK from NS,National Semiconductor

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LM2734XMK

Manufacturer: NS

Thin SOT23 1A Load Step-Down DC-DC Regulator

Partnumber Manufacturer Quantity Availability
LM2734XMK NS 966 In Stock

Description and Introduction

Thin SOT23 1A Load Step-Down DC-DC Regulator The LM2734XMK is a switching regulator manufactured by Texas Instruments (NS). Here are its key specifications, descriptions, and features:  

### **Specifications:**  
- **Input Voltage Range:** 2.7V to 14V  
- **Output Voltage Range:** Adjustable from 1.22V to 14V  
- **Output Current:** Up to 1A  
- **Switching Frequency:** 550 kHz (LM2734X) or 1.6 MHz (LM2734Y)  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SOT-23-6 (XMK)  

### **Descriptions:**  
The LM2734XMK is a step-up (boost) DC-DC converter designed for small, low-power applications. It integrates a high-side N-channel MOSFET and provides a compact, efficient solution for generating higher output voltages from low input sources.  

### **Features:**  
- **Wide Input Voltage Range:** Supports 2.7V to 14V input.  
- **Adjustable Output Voltage:** Set via external resistors.  
- **High Switching Frequency:** Reduces external component size.  
- **Integrated MOSFET:** Simplifies design and improves efficiency.  
- **Thermal Shutdown & Current Limit:** Protects the device from overheating and overcurrent conditions.  
- **Low Shutdown Current:** <1µA in shutdown mode.  
- **Small Footprint:** SOT-23-6 package for space-constrained applications.  

This information is based on Texas Instruments' datasheet for the LM2734XMK.

Application Scenarios & Design Considerations

Thin SOT23 1A Load Step-Down DC-DC Regulator

Alternative Part Number

  • TPS54331DR --: Pin-compatible step-down converter with similar input voltage range and current rating; TI is the successor to National Semiconductor, so support and availability are strong.
  • MP1584EN --: Widely available 3A step-down regulator with comparable switching frequency and compact footprint, suitable as a drop-in functional replacement in many designs.
  • AP3211KTR-G1 --: Low-cost 1.5A buck converter with similar voltage range and SOT-23 package, offering a practical alternative when slightly lower current is acceptable.

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