Overview

Features and Benefits

  • Fixed 5V or Adjustable Output
  • 4.5V to 24V Input Voltage Range
  • Up to 600mA Output Current
  • Internal 0.4Ω P-Channel MOSFET
  • Efficiency Over 95%
  • 15µA Quiescent Supply Current
  • 3µA Shutdown Current
  • 100% Maximum Duty Cycle for Low Dropout
  • Current-Limited Architecture
  • Thermal Shutdown
  • Small 8-µMAX Package

Product Details

The MAX1776 high-efficiency step-down converter provides an adjustable output voltage from 1.25V to VIN from supply voltages as high as 24V. An internal current-limited 0.4Ω MOSFET delivers load currents up to 600mA. Operation to 100% duty cycle minimizes dropout voltage (240mV at 600mA).

The MAX1776 has a low 15µA quiescent current to improve light-load efficiency and conserve battery life. The device draws only 3µA while in shutdown.

High switching frequencies (up to 200kHz) allow the use of tiny surface-mount inductors and output capacitors. The MAX1776 is available in an 8-pin µMAX package, which uses half the space of an 8-pin SO. For increased output drive capability, use the MAX1626/ MAX1627 step-down controllers, which drive an external P-channel MOSFET to deliver up to 20W.

Applications

  • Distributed Power Systems
  • Handheld Devices
  • Keep-Alive Supplies
  • Notebook Computers

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Product Recommendations

MAX1776 Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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