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MAX857ESA+ from MAXIM,MAXIM - Dallas Semiconductor

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MAX857ESA+

Manufacturer: MAXIM

3.3V/5V or Adjustable Output, Step-Up DC-DC Converters

Partnumber Manufacturer Quantity Availability
MAX857ESA+,MAX857ESA MAXIM 240 In Stock

Description and Introduction

3.3V/5V or Adjustable Output, Step-Up DC-DC Converters The MAX857ESA+ is a boost (step-up) DC-DC converter manufactured by Maxim Integrated (now part of Analog Devices).  

### **Specifications:**  
- **Input Voltage Range:** 0.7V to 5.5V  
- **Output Voltage:** Adjustable from 2V to 5.5V  
- **Output Current:** Up to 600mA (dependent on input voltage)  
- **Switching Frequency:** 500kHz (typical)  
- **Efficiency:** Up to 92%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin SOIC (ESA)  
- **Low Quiescent Current:** 30µA (typical)  
- **Shutdown Current:** <1µA  

### **Descriptions & Features:**  
- Designed for battery-powered applications requiring a regulated output voltage higher than the input.  
- Uses a current-limited, pulse-width modulation (PWM) controller with an internal N-channel MOSFET switch.  
- Includes undervoltage lockout (UVLO) to prevent excessive battery drain.  
- Adjustable output voltage via external resistors.  
- Soft-start feature to reduce inrush current.  
- Suitable for portable devices, PDAs, and other low-power electronics.  

This information is sourced from the manufacturer's datasheet.

Application Scenarios & Design Considerations

3.3V/5V or Adjustable Output, Step-Up DC-DC Converters

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