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MAX1954EUB+ from MAXIM,MAXIM - Dallas Semiconductor

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MAX1954EUB+

Manufacturer: MAXIM, MAX

Low-Cost, High-Frequency, Current-Mode PWM Buck Controllers
Partnumber Manufacturer Quantity Availability
MAX1954EUB+,MAX1954EUB MAXIM, MAX 40090 In Stock

Description and Introduction

Low-Cost, High-Frequency, Current-Mode PWM Buck Controllers The MAX1954EUB+ is a high-efficiency, step-down DC-DC converter manufactured by Maxim Integrated. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**  
- **Manufacturer:** Maxim Integrated  
- **Part Number:** MAX1954EUB+  
- **Package:** 10-pin µMAX (3mm x 5mm)  
- **Input Voltage Range:** 4.5V to 28V  
- **Output Voltage Range:** Adjustable from 1.25V to 5.5V  
- **Output Current:** Up to 1.5A  
- **Switching Frequency:** 500kHz (fixed)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
The MAX1954EUB+ is a synchronous step-down DC-DC converter designed for high-efficiency power conversion in applications requiring a wide input voltage range. It integrates both high-side and low-side MOSFETs, reducing external component count. The device operates in pulse-width modulation (PWM) mode for optimal efficiency and includes features like soft-start, overcurrent protection, and thermal shutdown.  

### **Features:**  
- **High Efficiency (up to 95%)**  
- **Integrated Synchronous Rectifier**  
- **Adjustable Output Voltage (1.25V to 5.5V)**  
- **500kHz Fixed Switching Frequency**  
- **Overcurrent and Thermal Protection**  
- **Soft-Start Functionality**  
- **Low Dropout Operation**  
- **Compact µMAX Package**  

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

Application Scenarios & Design Considerations

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

Alternative Part Number

  • LM3488MM --: Low-side N-channel MOSFET controller in MSOP-10, similar boost/SEPIC topology and supply range, widely available and pin-function compatible for many MAX1954 designs.
  • TPS40210DGQ --: Wide-input boost/SEPIC controller with adjustable frequency and current-mode control, comparable to MAX1954 in function and can serve as a drop-in design alternative with minor layout changes.
  • LT1932ES6 --: Compact boost converter IC from Linear Technology with similar input voltage range and switching regulator role, suitable as a functional alternative when exact pinout match is not required.
  • LTC3406ES5#TRPBF --: 1.5A synchronous step-down converter in a small package with similar input voltage range and switching frequency, suitable as a functional replacement for the MAX1954.
  • TPS62040DGQ --: High-efficiency 1.2A step-down converter with comparable input range and adjustable output, commonly used as a drop-in alternative in similar power designs.
  • AP3402KTR-G1 --: 2A synchronous buck converter with wide input voltage range and compact footprint, offering similar performance for step-down regulation applications.

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