特点
Monitors Three Inputs Simultaneously:
3V, 1.8V and Adjustable
±1.5% Threshold Accuracy Over Temperature
Very Low Supply Current: 10μA Typ
200ms Reset Time Delay
Power Supply Glitch Immunity
Guaranteed RESET for V
CC3
>/= 1V or V
CC18
>/= 1V
3V Active-Low Push-Pull Reset Output
5-Lead SOT-23 Package
典型应用
描述
描述 The LTC?1985-1.8 is a triple supply monitor intended for systems with multiple supply voltages. The reset output remains low until all three supplies have been in compliance for 200ms. Tight 1.5% accuracy specifications and glitch immunity ensure reliable reset operation without false triggering. The RST output is guaranteed to be in the correct state for V CC18 or V CC3 down to 1V. The LTC1985 may also be configured to monitor any one or two V CC inputs instead of three, depending on system requirements. Very low (10μA typical) supply current makes the LTC1985 ideal for power conscious systems. The LTC1985 is available in a 5-lead SOT-23 package.