Maxim Integrated MAX22519 Digital Isolator

Maxim Integrated MAX22519 Digital Isolator is a dual-channel digital galvanic isolator with an integrated field-side supply. This digital isolator eliminates the bulky and expensive external isolated power supply when the power demand of the field side is small. The field-side power is supplied by the logic-side using an integrated isolated DC-DC converter. This digital isolator device is available with either push-pull or open-drain outputs and output default states are either logic-high or high impedance. The MAX22519 digital isolator features integrated isolated field-side supply, integrated galvanic digital isolation, integrated surge, and short protection with external. This MAX22519 digital isolator offers 24V_AC of short protection, a compact 8-Pin wide-body SOIC package (5.5mm creepage), and 3.5kV_RMS isolation voltage for the 60s (V_ISO). The digital isolator is ideally used in industrial IoT, industrial networking systems, building automation, and medical equipment.

Features

• Robust protection in a small footprint:
  • Integrated isolated field-side supply
  • Integrated galvanic digital isolation
  • Integrated surge and short protection with an external series resistor
• Compact 8-pin wide-body SOIC package (5.5mm creepage)
• Integrated surge and short protection with an external series resistor:
  • 24V_AC short protection
  • ±1kV line-to-ground and ±2kV line-to-line surge tolerance (1.2/50μs waveform)

Specifications

• -40°C to 125°C operating temperature range
• 3V to 5.5V of logic side supply
• -60°C to 150°C of the storage temperature range
• 150°C of maximum junction temperature
• 2.7V to 4V of supply voltage
• 3.5kV_RMS of isolation voltage for the 60s (V_ISO)
• 445V_RMS of continuous working voltage (V_IOWM)
• 220μA of field-side supply external load capability

Block Diagram

Application Circuit

more information:https://www.maximintegrated.com/en/products/interface/isolation/MAX22519.html

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