DESCRIPTION

The LTC®1726 is a triple supply monitor and microprocessor supervisory circuit with adjustable reset and watchdog functions intended for systems with multiple supply voltages. The part has a common open-drain reset output with an adjustable delay. The reset and watchdog time-out periods are both adjustable using external capacitors.

FEATURES

■ Monitors Three Inputs Simultaneously
LTC1726-5: 5V, 3.3V and ADJ
LTC1726-2.5: 2.5V, 3.3V and ADJ
■ ±1.5% Threshold Accuracy Over Temperature
■ Low Supply Current: 16µA Typ
■ Adjustable Reset Timeout
■ Adjustable Watchdog Timeout
■ Active Low Open-Drain Reset Output
■ Power Supply Glitch Immunity
■ Guaranteed RESET for VCC3 ≥ 1V or VCC25/VCC5 ≥ 1V
■ MS8 and SO-8 Packages

APPLICATIONS

■ Desktop Computers
■ Notebook Computers
■ Intelligent Instruments
■ Portable Battery-Powered Equipment
■ Network Servers