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MAX686EEE from MAX,MAXIM - Dallas Semiconductor

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MAX686EEE

Manufacturer: MAX, MAXIM

DAC-Controlled Boost/Inverter LCD Bias Supply with Internal Switch

Partnumber Manufacturer Quantity Availability
MAX686EEE MAX, MAXIM 1225 In Stock

Description and Introduction

DAC-Controlled Boost/Inverter LCD Bias Supply with Internal Switch The MAX686EEE is a low-power, step-up DC-DC converter manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features:

### **Specifications**  
- **Input Voltage Range**: 0.7V to 5.5V  
- **Output Voltage Range**: Adjustable from 2V to 5.5V  
- **Output Current**: Up to 100mA (depending on input/output conditions)  
- **Switching Frequency**: 500kHz  
- **Efficiency**: Up to 90%  
- **Operating Temperature Range**: -40°C to +85°C  
- **Package**: 16-QSOP  

### **Descriptions**  
The MAX686EEE is a high-efficiency, low-power step-up DC-DC converter designed for battery-powered applications. It features an internal synchronous rectifier, reducing the need for external diodes and improving efficiency. The device is optimized for low-voltage startup and operation, making it suitable for single-cell or dual-cell battery systems.  

### **Features**  
- **Low Start-Up Voltage**: Operates down to 0.7V  
- **Internal Synchronous Rectifier**: Improves efficiency  
- **Adjustable Output Voltage**: Set via external resistors  
- **Low Quiescent Current**: 20µA (typical)  
- **Soft-Start Function**: Reduces inrush current  
- **Overcurrent Protection**: Enhances reliability  
- **Compact Package**: 16-QSOP for space-constrained designs  

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

Application Scenarios & Design Considerations

DAC-Controlled Boost/Inverter LCD Bias Supply with Internal Switch

Alternative Part Number

  • LTC1550CS8 --: Low-noise inverting charge pump in an 8-pin SOIC package, functionally similar to the MAX686 for negative supply generation.
  • TPS60403DBVR --: Unregulated charge pump inverter in SOT-23, a common compact substitute for small negative-rail generation.
  • ICL7660ACPA --: Classic charge-pump voltage inverter with wide availability, suitable as a general-purpose replacement in similar applications.
  • LTC1983ES6-5 --: Pin-compatible regulated charge pump inverter in SOT-23, functionally similar to the MAX686 and widely available.
  • ICL7660SCPA --: Classic charge pump voltage inverter offering similar negative supply generation, though with lower output current.

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