MAX1808

PRODUCTION

Micropower Adjustable Overvoltage Protection Controllers

Data Sheet (Rev. 0) Product Selection Table
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Overview

  • Five 3% Accurate Overvoltage Comparators
  • Series PFET Gate Driver with VGS Limiter
  • 21µA Quiescent Supply Current
  • 4µA Shutdown Current
  • 4.4V to 28V Operating Voltage Range
  • 3% Accurate Comparator with 10% Hysteresis for Low-Battery Detection (MAX1808)
  • 28V Open-Drain N-Channel Output (MAX1807)
  • Small 10-Pin µMAX Package

The MAX1807/MAX1808 monitor up to five supply rails for an overvoltage condition and provide a latched output when any one of the five supplies exceeds the trip thresholds. The latched output drives an external P-channel load switch to remove power when an over-voltage condition is detected. The latch is reset when a logic low is input to ON or the power supply is cycled.

The MAX1807 provides a 28V open-drain fault output that can be used to trigger an alert, trip a resetable fuse, or for other purposes. The MAX1808 includes a low-battery comparator with hysteresis to drive the DP output high, turning off the external P-channel switch when the input voltage is too low.

The MAX1807/MAX1808 are available in a miniature 10-pin µMAX® package.

Applications

  • Multi-Output Power Supplies
  • Notebook Computers
  • Power-Supply Modules
MAX1808
Micropower Adjustable Overvoltage Protection Controllers
MAX1807, MAX1808: Typical Operating Circuit
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Documentation

Data Sheet 1

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