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MAX16055：Ultra-Small, Hex Voltage, Microprocessor Supervisor

Increases Reliability While Reducing Solution Size

The MAX16055 precision hex voltage microprocessor (µP) supervisory circuit monitors up to six system-supply voltages and asserts a single reset when any one supply voltage drops below its preset threshold. The device significantly reduces system size and component count while improving reliability compared to multiple ICs or discrete components. A variety of factory-trimmed threshold voltages are available to accommodate different supply voltages and tolerance with minimal external components. The MAX16055 includes internally fixed threshold options for monitoring 3.3V, 3.0V, 2.5V, 1.8V, 1.5V, 1.2V, 1.1V, 1.0V, and 0.9V supplies with -5% or -10% tolerance. The MAX16055 is also available with one to five adjustable threshold inputs to monitor voltages down to 0.5V. A single active-low, open-drain output asserts when any monitored input falls below its associated threshold. The reset output features a weak internal pullup (typically 70µA) to supply input IN1. The reset output remains low for the reset timeout period (140ms, min) after all voltages rise above the selected thresholds. The reset output remains valid as long as either IN1 or IN2 input voltage is above 1V. The MAX16055 is available in a small 10-pin µMAX® (3mm x 3mm) package. The MAX16055 operates over the -40°C to +125°C automotive temperature range.

Key Features Precision Factory-Set Reset Threshold Options 3.3V, 3.0V, 2.5V, 1.8V, 1.5V, 1.2V, 1.1V, 1.0V, and 0.9V Adjustable Voltage Threshold Monitors Down to 0.5V with 1.5% Accuracy Open-Drain Active-Low RESET Output with 70µA Internal Pullup Fixed 140ms (min) Reset Timeout Period Manual Reset Input Reset Valid for IN1 ≥ 1V or IN2 = 1V Tolerance Select (5%/10%) Input Immune to Short Supply Transients

MAX16055: Application Operating Circuit Applications/Uses Computers Data Storage Equipment Desktop and Notebook Computers High-End Printers Industrial Equipment Networking Equipment Servers/Workstations Set-Top Boxes Telecommunications

DataSheet

Parametrics

Quality and Environmental Data

• MAX16055.pdf

Ordering Information