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MAX8743 from MAXIM,MAXIM - Dallas Semiconductor

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MAX8743

Manufacturer: MAXIM

Dual, High-Efficiency, Step-Down Controller with High Impedance in Shutdown

Partnumber Manufacturer Quantity Availability
MAX8743 MAXIM 69 In Stock

Description and Introduction

Dual, High-Efficiency, Step-Down Controller with High Impedance in Shutdown The MAX8743 is a step-up DC-DC converter manufactured by Maxim Integrated. Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 0.7V to 5.5V  
- **Output Voltage Range:** Adjustable from 2.5V to 5.5V  
- **Maximum Output Current:** 1A  
- **Switching Frequency:** 1MHz (typical)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 10-pin µMAX®  

### **Descriptions:**  
The MAX8743 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, such as portable electronics, where extended battery life is critical.  

### **Features:**  
- **True Disconnect in Shutdown:** Prevents battery drain when disabled.  
- **Synchronous Rectification:** Improves efficiency and eliminates the need for an external Schottky diode.  
- **Low Quiescent Current:** 20µA (typical) for improved battery life.  
- **Soft-Start:** Reduces inrush current during startup.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation under low-input conditions.  
- **Adjustable Output Voltage:** Set via external resistors.  
- **Thermal Shutdown Protection:** Prevents damage from overheating.  

The MAX8743 is suitable for applications such as white LED drivers, portable devices, and battery-powered systems requiring efficient power conversion.

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