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MAX1931EUB+ from MAXIM,MAXIM - Dallas Semiconductor

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MAX1931EUB+

Manufacturer: MAXIM, MAX

Current-Limited Switch for Single USB Port

Partnumber Manufacturer Quantity Availability
MAX1931EUB+,MAX1931EUB MAXIM, MAX 36 In Stock

Description and Introduction

Current-Limited Switch for Single USB Port The MAX1931EUB+ is a high-efficiency, step-down 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:** 4.5V to 28V  
- **Output Voltage Range:** Adjustable from 1.25V to 5.5V (fixed or programmable)  
- **Output Current:** Up to 500mA  
- **Switching Frequency:** 500kHz (typical)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 10-pin µMAX (3mm x 5mm)  

### **Descriptions:**  
The MAX1931EUB+ is a synchronous step-down DC-DC converter designed for high efficiency and low power dissipation. 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 across load conditions.  

### **Features:**  
- **Integrated Synchronous Rectifier:** Improves efficiency by eliminating the need for an external Schottky diode.  
- **Adjustable/Fixed Output Voltage:** Supports both fixed and adjustable output configurations.  
- **Low Quiescent Current:** 40µA (typical) in shutdown mode.  
- **Overcurrent and Thermal Protection:** Built-in safeguards for reliable operation.  
- **Soft-Start Function:** Reduces inrush current during startup.  
- **Small Footprint:** 10-pin µMAX package for space-constrained applications.  

This information is strictly based on the manufacturer's datasheet and does not include recommendations or usage guidance.

Application Scenarios & Design Considerations

Current-Limited Switch for Single USB Port

Alternative Part Number

  • TPS2553DBVR --: Adjustable current-limited power switch in SOT-23-6, functionally similar to the MAX1931 USB current-limit switch and widely available.
  • MIC2026-1YM --: Dual-channel USB power distribution switch with current limiting, a common alternative for USB port protection applications.
  • AP2553W6-7 --: Single-channel adjustable current-limited power switch in SOT-26, suitable replacement for USB current-limiting designs.

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