General Description
The APR3021/2/3 are designed to monitor voltage supplies in µP and digital systems. The quiescent current is extremely low, typically 1.5 µA, making it ideal for portable battery operated equipment. The APR3021/2/3 operate by monitoring the system power supply voltage. When the input voltage drops below a fixed threshold, the device asserts a reset signal for a fixed time period after Vcc rises above the fixed threshold. The APR3021/2/3 series is available with three output stage versions : APR3021 push-pull active low output, APR3022 push-pull active high output and APR3023 open drain active low output. They are also designed to reject fast line transient glitches on Vcc. The APR3021/2/3 are come in a miniature SOT-23, SOT-23-5, SOT-89 packages.

Features
• 1.2V to 5.5V Input Voltage Range
• Low Quiescent Current : less Than 1.5 µA
• High accuracy detection threshold : ±1.5%
• Fixed trimmed reset thresholds for 1.5V, 1.75V, 2.32V, 2.63V, 2.93V, 3.08V, 3.9V, 4.38V.
• Reset Timeout Period 250ms
• Available output configurations
   - Open-drain output
   - CMOS active high output
   - CMOS active low output
• SOT-23 , SOT-23-5 and SOT-89 packages
• No external components

Applications
• Computers
• Cell Phones
• Portable Electronics
• µP Power Supply Monitoring