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MAX649CPA

5V/3.3V/3V or Adjustable, High-Efficiency,

Partnumber Manufacturer Quantity Availability
MAX649CPA 16 In Stock

Description and Introduction

5V/3.3V/3V or Adjustable, High-Efficiency, The MAX649CPA is a high-voltage protection IC designed to safeguard sensitive electronic components from overvoltage and undervoltage conditions.  

### **Manufacturer:**  
Maxim Integrated (now part of Analog Devices)  

### **Key Specifications:**  
- **Input Voltage Range:** Up to 72V  
- **Overvoltage Threshold:** Adjustable (default 60V)  
- **Undervoltage Threshold:** Adjustable (default 5V)  
- **Output Current:** Up to 100mA  
- **Operating Temperature Range:** 0°C to +70°C  
- **Package:** 8-Pin PDIP (Plastic Dual In-Line Package)  

### **Descriptions and Features:**  
- Provides overvoltage and undervoltage protection for automotive, industrial, and telecom applications.  
- Includes an internal charge pump for driving an external N-channel MOSFET.  
- Adjustable thresholds via external resistors.  
- Low quiescent current (typically 50µA).  
- Fault detection with a status output pin.  
- Reverse-battery protection (-40V).  

This IC is commonly used in power supply protection circuits to prevent damage from voltage spikes or drops.

Application Scenarios & Design Considerations

5V/3.3V/3V or Adjustable, High-Efficiency,

Alternative Part Number

  • LTC1265CS8 --: Pin-compatible CMOS step-down switching regulator in an 8-pin SOIC package with similar input voltage range and current capability, suitable as a functional replacement.
  • MC34063ACP --: Widely available general-purpose DC-DC converter IC in a DIP-8 package that can be configured for similar step-down regulation, offering a low-cost drop-in style alternative.
  • LM2575T-5 --: Simple switcher step-down regulator in a TO-220 package with integrated switch, providing a robust alternative when board layout allows a different package and fixed 5V output.

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