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MAX1791EUB from MAX,MAXIM - Dallas Semiconductor

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MAX1791EUB

Manufacturer: MAX, MAXIM, MAXIM

High-Efficiency, 10-Pin レMAX, Step-Down Controllers for Notebooks

Partnumber Manufacturer Quantity Availability
MAX1791EUB MAX, MAXIM, MAXIM 5242 In Stock

Description and Introduction

High-Efficiency, 10-Pin レMAX, Step-Down Controllers for Notebooks The MAX1791EUB is a step-up DC-DC converter manufactured by Maxim Integrated (now part of Analog Devices). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **Specifications:**
- **Input Voltage Range:** 0.7V to 5.5V  
- **Output Voltage Range:** Adjustable from 1.8V to 5.5V (via external resistor divider)  
- **Output Current:** Up to 300mA (depending on input/output conditions)  
- **Switching Frequency:** 1MHz (fixed)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 10-pin µMAX® (3mm x 5mm)  

### **Descriptions:**
The MAX1791EUB is a high-efficiency, step-up DC-DC converter designed for low-input-voltage applications. It integrates a synchronous rectifier to improve efficiency and reduce external component count. The device is optimized for battery-powered systems, such as portable electronics, where extended battery life is critical.  

### **Features:**
- **Low Start-Up Voltage:** Operates down to 0.7V  
- **Synchronous Rectification:** Improves efficiency and eliminates the need for an external Schottky diode  
- **Adjustable Output Voltage:** Set via external resistors  
- **Low Quiescent Current:** 20µA (typical)  
- **Automatic Pulse-Frequency Modulation (PFM) Mode:** Enhances light-load efficiency  
- **Overcurrent and Thermal Protection:** Ensures safe operation  
- **Small Footprint:** 10-pin µMAX package saves board space  

This information is based on the manufacturer's datasheet and technical documentation. For detailed application notes or design considerations, refer to the official MAX1791EUB datasheet.

Application Scenarios & Design Considerations

High-Efficiency, 10-Pin レMAX, Step-Down Controllers for Notebooks

Alternative Part Number

  • TPS62040DGQ --: High-efficiency step-down converter in a similar small package, widely available and a common cross for MAX1791 designs.
  • LTC3406ES5 --: Compact synchronous buck regulator with comparable input range and current capability, suitable as a functional replacement.
  • AP3402KTR-G1 --: Low-cost 2A step-down converter with similar electrical characteristics and small footprint, good second-source option.
  • TPS62000DGSR --: Step-down DC-DC converter in a similar small package with comparable input voltage range and output current, widely available and pin-functionally similar for many MAX1791 applications.
  • LM2596S-ADJ --: Adjustable buck regulator with higher current capability and broad availability; suitable when board space allows a larger package and the design can tolerate different switching frequency.
  • MP1584EN --: Compact high-efficiency step-down converter with adjustable output, commonly used as a cost-effective substitute for small Maxim buck regulators in similar voltage/current ranges.
  • TPS62130RGTR --: Step-down DC-DC converter in a small package with comparable input voltage range and current capability, suitable as a functional substitute.
  • LTC3406ES5#TRPBF --: High-efficiency synchronous buck converter with similar switching regulator function and compact footprint.
  • AP3211KTR-G1 --: Low-cost step-down converter offering similar voltage and current ratings for general power supply replacement.

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