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MAX5033DUSA+ from MAIXM

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MAX5033DUSA+

Manufacturer: MAIXM, MAXIM

500mA, 76V, High-Efficiency, MAXPower Step-Down DC-DC Converter

Partnumber Manufacturer Quantity Availability
MAX5033DUSA+ MAIXM, MAXIM 16900 In Stock

Description and Introduction

500mA, 76V, High-Efficiency, MAXPower Step-Down DC-DC Converter The MAX5033DUSA+ is a step-down (buck) DC-DC converter manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Input Voltage Range:** 7.5V to 76V  
- **Output Voltage:** Fixed 3.3V, 5V, or adjustable (via external resistors)  
- **Output Current:** Up to 500mA  
- **Switching Frequency:** 125kHz  
- **Efficiency:** Up to 94%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 8-pin SOIC  

### **Descriptions:**
- The MAX5033DUSA+ is a high-efficiency, step-down DC-DC converter designed for industrial, automotive, and telecom applications.  
- It integrates a power MOSFET and features a fixed-frequency PWM control scheme.  
- The device includes internal soft-start, cycle-by-cycle current limiting, and thermal shutdown protection.  

### **Features:**
- **Wide Input Voltage Range (7.5V to 76V)** – Suitable for high-voltage applications.  
- **Low Quiescent Current (270µA)** – Enhances efficiency in light-load conditions.  
- **Internal Power MOSFET** – Simplifies design and reduces external component count.  
- **Fixed-Frequency PWM Operation (125kHz)** – Ensures stable performance with low noise.  
- **Protection Features:**  
  - Overcurrent protection (cycle-by-cycle)  
  - Thermal shutdown  
  - Soft-start functionality  
- **Adjustable Output Voltage (with external resistors)** – Provides design flexibility.  

This device is commonly used in power supplies for industrial systems, automotive electronics, and battery-powered applications.

Application Scenarios & Design Considerations

500mA, 76V, High-Efficiency, MAXPower Step-Down DC-DC Converter

Alternative Part Number

  • LM2596S-5.0 --: Widely available step-down regulator with similar 5V fixed output and current capability; easy second source with extensive documentation.
  • MP1584EN --: Compact high-efficiency buck converter covering similar input range and output current, good cost-effective alternative.
  • TPS5430DDA --: 3A step-down converter with comparable input voltage range and adjustable output, suitable drop-in style replacement in many designs.
  • L5973D --: Up to 2.5A step-down switching regulator with similar input voltage range and SOIC-8 footprint, suitable as a functional replacement.

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