View apr3021 apr3022 apr3023 datasheet:

APR3021/2/3 MicroPower Microprocessor Reset Circuit Features General Description • 1.2V to 5.5V Input Voltage Range The APR3021/2/3 are designed to monitor voltage • Low Quiescent Current : less Than 1.5 µA supplies in µP and digital systems. The quiescent • High accuracy detection threshold : ±1.5% current is extremely low, typically 1.5 µA, making it • Fixed trimmed reset thresholds for 1.5V, 1.75V, ideal for portable battery operated equipment. The 2.32V, 2.63V, 2.93V, 3.08V, 3.9V, 4.38V. APR3021/2/3 operate by monitoring the system • Reset Timeout Period 250ms power supply voltage. When the input voltage drops • Available output configurations below a fixed threshold, the device asserts a reset - Open-drain output signal for a fixed time period after Vcc r