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MAX1957EUB+T from MAXIM,MAXIM - Dallas Semiconductor

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MAX1957EUB+T

Manufacturer: MAXIM

Low-Cost, High-Frequency, Current-Mode PWM Buck Controllers

Partnumber Manufacturer Quantity Availability
MAX1957EUB+T,MAX1957EUBT MAXIM 2502 In Stock

Description and Introduction

Low-Cost, High-Frequency, Current-Mode PWM Buck Controllers The MAX1957EUB+T is a 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 2A  
- **Switching Frequency:** 500kHz (adjustable up to 1MHz)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 10-pin µMAX (3mm x 5mm)  

### **Descriptions:**  
The MAX1957EUB+T is a high-efficiency, step-down DC-DC converter designed for applications requiring high output current and wide input voltage ranges. It integrates synchronous rectification for improved efficiency and includes features like soft-start, overcurrent protection, and thermal shutdown.

### **Features:**  
- **Synchronous Rectification:** Reduces power loss and improves efficiency.  
- **Adjustable Output Voltage:** Set via external resistors.  
- **Adjustable Switching Frequency:** Allows optimization for efficiency or component size.  
- **Soft-Start:** Prevents inrush current at startup.  
- **Overcurrent and Thermal Protection:** Enhances reliability.  
- **Low Dropout Operation:** Maintains regulation even when input voltage is close to output.  
- **Small Footprint:** Suitable for space-constrained applications.  

This device is commonly used in industrial, telecom, and portable electronics requiring efficient power conversion.

Application Scenarios & Design Considerations

Low-Cost, High-Frequency, Current-Mode PWM Buck Controllers

Alternative Part Number

  • TPS62040DGQ --: High-efficiency step-down converter in a small package, functionally similar to the MAX1957 and widely available as a drop-in style alternative.
  • LTC3406ES5 --: Compact synchronous buck regulator with comparable input range and current capability, suitable replacement for portable power designs.
  • AP3012KTR-G1 --: Low-cost boost/step-up converter with similar voltage ratings, offering a cost-effective alternative for the same application.

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