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MAX1638EAG from MAXIM,MAXIM - Dallas Semiconductor

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MAX1638EAG

Manufacturer: MAXIM, MAX

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

Partnumber Manufacturer Quantity Availability
MAX1638EAG MAXIM, MAX 6741 In Stock

Description and Introduction

High-Speed Step-Down Controller with Synchronous Rectification for CPU Power The MAX1638EAG is a step-down controller manufactured by Maxim Integrated (now part of Analog Devices). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Manufacturer:**  
- Maxim Integrated (now Analog Devices)  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 30V  
- **Output Voltage Range:** Adjustable from 1.25V to 5.5V  
- **Output Current:** Up to 20A (with external MOSFETs)  
- **Switching Frequency:** 200kHz to 300kHz (adjustable)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 24-pin SSOP (Shrink Small Outline Package)  

### **Descriptions:**  
- The MAX1638EAG is a high-efficiency, step-down (buck) DC-DC controller designed for high-current applications.  
- It uses synchronous rectification for improved efficiency and supports adjustable output voltage.  
- The device is suitable for powering high-performance processors, ASICs, and other low-voltage, high-current loads.  

### **Features:**  
- **Wide Input Voltage Range:** Supports 4.5V to 30V input.  
- **Adjustable Output Voltage:** Configurable from 1.25V to 5.5V.  
- **Synchronous Rectification:** Enhances efficiency and reduces power loss.  
- **Programmable Switching Frequency:** Allows optimization for efficiency or component size.  
- **Current-Mode Control:** Provides fast transient response and stable operation.  
- **Soft-Start Function:** Prevents inrush current at startup.  
- **Overcurrent and Thermal Protection:** Ensures safe operation under fault conditions.  
- **Power-Good Output:** Monitors output voltage status.  

This information is based solely 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

  • LTC1736CG --: High-efficiency synchronous step-down controller with similar function and pin-compatible architecture, suitable as a direct functional replacement.
  • ISL6520ACBZ --: Single-phase synchronous buck PWM controller offering comparable voltage regulation performance for CPU core supplies.
  • TPS5210PWP --: Programmable synchronous buck controller with similar current-mode control and protection features, usable in equivalent power supply designs.
  • LTC1628CG --: Dual high-efficiency synchronous step-down controller offering similar control loop and MOSFET drive capability for replacement designs.

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