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MAX1857EUA47 from MAX,MAXIM - Dallas Semiconductor

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MAX1857EUA47

Manufacturer: MAX

500mA / Low-Dropout / Ripple-Rejecting LDO in MAX

Partnumber Manufacturer Quantity Availability
MAX1857EUA47 MAX 64 In Stock

Description and Introduction

500mA / Low-Dropout / Ripple-Rejecting LDO in MAX The MAX1857EUA47 is a step-down DC-DC converter 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 (Analog Devices)  

### **Part Number:**  
MAX1857EUA47  

### **Description:**  
The MAX1857 is a high-efficiency, step-down DC-DC converter designed for applications requiring a regulated output voltage. It integrates a synchronous rectifier to improve efficiency and reduce external component count.  

### **Key Features:**  
- **Input Voltage Range:** 2.6V to 5.5V  
- **Output Voltage:** Fixed 4.7V (adjustable versions available in the series)  
- **Output Current:** Up to 500mA  
- **Efficiency:** Up to 95%  
- **Switching Frequency:** 1MHz (fixed)  
- **Synchronous Rectification:** Improves efficiency  
- **Low Dropout Operation:** Allows high duty cycles  
- **Shutdown Current:** <1µA  
- **Thermal Overload Protection:** Prevents damage from excessive heat  
- **Package:** 8-pin µMAX (ultra-small footprint)  

### **Applications:**  
- Portable devices  
- Battery-powered equipment  
- Point-of-load regulation  
- Handheld instruments  

### **Package Type:**  
µMAX-8 (UA47 denotes package and output voltage variant)  

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

Application Scenarios & Design Considerations

500mA / Low-Dropout / Ripple-Rejecting LDO in MAX

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