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MAX1945REUI from MAXIM,MAXIM - Dallas Semiconductor

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MAX1945REUI

Manufacturer: MAXIM

2.6 V to 5.5 V, 1 MHz, 1% accurate, 6A internal switch step-down regulator

Partnumber Manufacturer Quantity Availability
MAX1945REUI MAXIM 1430 In Stock

Description and Introduction

2.6 V to 5.5 V, 1 MHz, 1% accurate, 6A internal switch step-down regulator The MAX1945REUI is a high-efficiency, step-down DC-DC converter manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Input Voltage Range:** 4.5V to 28V  
- **Output Voltage Range:** 0.8V to 5.5V (adjustable)  
- **Output Current:** Up to 500mA  
- **Switching Frequency:** 500kHz (fixed)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 28-pin TSSOP (REUI)  

### **Descriptions:**
The MAX1945REUI is a synchronous buck (step-down) DC-DC converter designed for high efficiency and low power dissipation. It integrates power MOSFETs, reducing external component count. It features a fixed-frequency PWM control scheme for stable operation across varying loads.  

### **Features:**
- **Integrated Power MOSFETs** – Reduces external components.  
- **Low Quiescent Current** – 40µA (typical) in shutdown mode.  
- **Soft-Start Function** – Limits inrush current during startup.  
- **Overcurrent and Thermal Protection** – Enhances reliability.  
- **Adjustable Output Voltage** – Set via external resistors.  
- **Synchronous Rectification** – Improves efficiency.  

This information is based solely on the manufacturer's datasheet.

Application Scenarios & Design Considerations

2.6 V to 5.5 V, 1 MHz, 1% accurate, 6A internal switch step-down regulator

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