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MAX1879EUA from MAX,MAXIM - Dallas Semiconductor

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MAX1879EUA

Manufacturer: MAX, MAXIM, MAXIM

Simple / Efficient / 1-Cell Li+ Pulse Charger

Partnumber Manufacturer Quantity Availability
MAX1879EUA MAX, MAXIM, MAXIM 2552 In Stock

Description and Introduction

Simple / Efficient / 1-Cell Li+ Pulse Charger The MAX1879EUA is a step-up 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:  

### **Specifications:**  
- **Manufacturer:** Maxim Integrated (Analog Devices)  
- **Part Number:** MAX1879EUA  
- **Package:** 8-pin μMAX (MSOP)  
- **Input Voltage Range:** 0.7V to 5.5V  
- **Output Voltage:** Adjustable (up to 5.5V)  
- **Output Current:** Up to 300mA (depending on input voltage)  
- **Switching Frequency:** 500kHz (typical)  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Shutdown Current:** <1µA  

### **Descriptions:**  
The MAX1879EUA 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, including single-cell or dual-cell alkaline/NiMH applications.  

### **Features:**  
- **True Low-Voltage Operation:** Starts up with inputs as low as 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:** 25µA (typical) for improved battery life.  
- **Internal Soft-Start:** Reduces inrush current during startup.  
- **Thermal Shutdown Protection:** Prevents damage from excessive heat.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation under low input conditions.  

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

Application Scenarios & Design Considerations

Simple / Efficient / 1-Cell Li+ Pulse Charger

Alternative Part Number

  • BQ24074RGTR --: Single-cell Li-ion linear charger with similar charge-management function and thermal regulation, suitable as a functional replacement in many designs.
  • LTC4054ES5-4.2 --: Standalone single-cell Li-ion linear charger in a small package, widely used as an alternative to MAX-series chargers with comparable charging behavior.
  • TP4056 --: Low-cost single-cell Li-ion linear charger IC with constant-current/constant-voltage charging, commonly used as a drop-in style alternative for similar charger applications.

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