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Analog Devices / Maxim Integrated MAX17682 Iso-Buck DC-DC Converters

Analog Devices MAX17682 Iso-Buck DC-DC Converters are high-voltage, high-efficiency, iso-buck DC-DC converters designed to provide isolated power up to 10W. The device operates over a wide 4.5V to 42V input voltage range and uses primary-side feedback to regulate the output voltage. These devices deliver primary peak current up to 3.7A and regulate the primary output voltage to within ±1.2% over -40°C to 125°C. The MAX17682 features peak-current-mode control with pulse-width modulation (PWM) scheme. The low-resistance, on-chip MOSFETs ensure high efficiency at full load and simplify the layout.

A programmable soft-start feature allows users to reduce input inrush current. The device also incorporates an output Enable/Under Voltage Lockout pin (EN/UVLO) that allows the user to turn on the part at the desired input voltage level. An open-drain, active-low RESETB pin provides a delayed power-good signal to the system upon achieving successful regulation of the primary output voltage.

Features

  • Eliminates External Components and Reduces Total Cost
    • Synchronous Primary Operation for High Efficiency and Reduced Cost
    • All-Ceramic Capacitors, Ultra-Compact Layout
  • Reduces Number of DC-DC Regulators to StockWide 4.5V to 42V Input Voltage Range
    • 0.9V to 92% VIN Primary Output Voltage
    • Delivers up to 3.7A Peak Current
    • 100kHz to 500kHz Adjustable Frequency with External Synchronization
  • Available in a 20-pin, 4mm x 4mm TQFN Package
  • Reduces Power DissipationPeak Efficiency > 90%
  • Shutdown Current = 2.8µA (typical)
  • Operates Reliably in Adverse Industrial Environments
    • Hiccup-Mode Current Limit, Sink Current Limit, and Auto-Retry Startup
    • Programmable EN/UVLO Threshold
    • Adjustable Soft-Start
    • -40°C to 150°C Junction Temperature Range

Applications

  • Industrial Process Control
  • Communication Hub in Smart meters
  • Isolated Power Supplies in Medical Equipment
  • Floating Power Supply Generation

MAX17682 Functional Block Diagram

Block Diagram - Analog Devices / Maxim Integrated MAX17682 Iso-Buck DC-DC Converters

Associated Tool

Analog Devices / Maxim Integrated MAX17682EVKIT Evaluation Kit

Fully assembled and tested circuit board that demonstrates the performance of the MAX17682.

Learn Moreabout Analog Devices / Maxim Integrated MAX17682EVKIT Evaluation Kit View Productsrelated to Analog Devices / Maxim Integrated MAX17682EVKIT Evaluation Kit

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Published: 2017-06-06 | Updated: 2023-04-11