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MAX1639ESE+T from MAXIM,MAXIM - Dallas Semiconductor

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MAX1639ESE+T

Manufacturer: MAXIM, MAXIM Pb-free

High-Speed Step-Down Controller with Synchronous Rectification for CPU Power

Partnumber Manufacturer Quantity Availability
MAX1639ESE+T MAXIM, MAXIM Pb-free 3542 In Stock

Description and Introduction

High-Speed Step-Down Controller with Synchronous Rectification for CPU Power The **MAX1639ESE+T** 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 based on factual information from Ic-phoenix technical data files:

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 30V  
- **Output Voltage Range:** Adjustable from 1.25V to 5.5V  
- **Output Current:** Up to 2A  
- **Switching Frequency:** 300kHz (fixed)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 16-pin Narrow SOIC (SO-16)  
- **Topology:** Synchronous Buck Converter  

### **Descriptions:**  
The MAX1639ESE+T is a synchronous step-down DC-DC converter designed for high-efficiency power conversion in applications requiring a stable, adjustable output voltage. It integrates high-side and low-side MOSFETs, reducing external component count. The device operates over a wide input voltage range, making it suitable for automotive, industrial, and telecom applications.  

### **Features:**  
- **Integrated Power MOSFETs** (reduces external components)  
- **Adjustable Output Voltage** (via external resistors)  
- **High Efficiency** (up to 95%)  
- **Low Dropout Operation** (100% duty cycle)  
- **Soft-Start Function** (reduces inrush current)  
- **Overcurrent and Thermal Protection**  
- **Fixed-Frequency PWM Operation** (300kHz)  
- **Synchronous Rectification** (improves efficiency)  

This information is strictly based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

High-Speed Step-Down Controller with Synchronous Rectification for CPU Power

Alternative Part Number

  • LTC1735CS --: High-efficiency synchronous step-down controller in the same application class as the MAX1639, with comparable input voltage range and current-mode control; widely available and well documented.
  • TPS5210PWP --: Synchronous buck controller offering similar functionality and voltage range, suitable as a functional replacement with minor external component adjustments.
  • ISL6520ACBZ --: Compact synchronous buck PWM controller with comparable switching behavior and supply range, usable as an alternative with layout and compensation review.
  • LTC1735CS8#PBF --: High-efficiency synchronous step-down controller in SO-8, functionally similar to the MAX1639 and widely available as a drop-in style replacement.

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