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MAX253MJA from MAXIM,MAXIM - Dallas Semiconductor

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MAX253MJA

Manufacturer: MAXIM

Transformer Driver for Isolated RS-485 Interface

Partnumber Manufacturer Quantity Availability
MAX253MJA MAXIM 10 In Stock

Description and Introduction

Transformer Driver for Isolated RS-485 Interface The MAX253MJA is a high-efficiency, low-noise, 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:** 2.7V to 5.5V  
- **Output Voltage:** Adjustable (up to 28V)  
- **Switching Frequency:** 500kHz  
- **Output Current:** Up to 40mA (at 12V output)  
- **Efficiency:** Up to 87%  
- **Operating Temperature Range:** -55°C to +125°C  
- **Package:** 8-pin CERDIP (MJA)  

### **Descriptions:**  
The MAX253MJA is a monolithic, step-up DC-DC converter optimized for low-power applications requiring high efficiency and low noise. It integrates a power switch, oscillator, and control circuitry, making it suitable for battery-powered systems, LCD bias supplies, and other low-power boost applications.  

### **Features:**  
- **Low Quiescent Current:** Typically 80µA  
- **Internal Power Switch:** Reduces external component count  
- **Adjustable Output Voltage:** Via external resistor divider  
- **Low Noise Operation:** Minimizes interference in sensitive applications  
- **Thermal Shutdown Protection:** Prevents damage from overheating  
- **Small External Components Required:** Inductor and capacitors  

This device is designed for applications requiring compact, efficient power conversion with minimal external components.

Application Scenarios & Design Considerations

Transformer Driver for Isolated RS-485 Interface

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