MAX17681 - Maxim Integrated

MAX17681 Iso-Buck DC-DC Converter

The MAX17681 is a high-voltage, high-efficiency, isobuck DC-DC converter designed to provide isolated power up to 3W. The device operates over a wide 4.5V to 42V input and uses primary-side feedback to regulate the output voltage. The MAX17681 uses peak-current-mode control. The low-resistance, on-chip MOSFETs ensure high efficiency at full load while simpli.

Features

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● Reduces External Components and Total Cost
• No Opto-Coupler
• Synchronous Primary Operation
• All-Ceramic Capacitors, Compact Layout
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● Reduces Number of DC-DC Regulators to Stock
• Wide 4.5V to 42V Input
• 0.9V to 0.96 x VIN Primary Output Voltage
• Delivers Up to 3W Output Power
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● Reduces Power Dissipation
• Peak Efficiency > 90%
• 0.9μA (typ) Shutdown Current
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● Operates Reliably in Adverse Industrial Environments
• Peak and Sink Current-Limit Protection
• ±1.7% Feedback Accuracy
• Programmable EN/UVLO Threshold
• Adjustable Soft-Start
• Overtemperature Protection
• -40°C.