APR3021 Datasheet, PDF (1/15 Pages) Anpec Electronics Coropration – MicroPower Microprocessor Reset Circuit

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.
• 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
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 avail-
able with three output stage versions : APR3021
push-pull active low output, APR3022 push-pull ac-
tive high output and APR3023 open drain active low
Applications
output. They are also designed to reject fast line tran-
sient glitches on Vcc. The APR3021/2/3 are come in
• Computers
• Cell Phones
• Portable Electronics
• µP Power Supply Monitoring
a miniature SOT-23, SOT-23-5, SOT-89 packages.
Pin Configuration
GND
NC NC
3
1
2
5
4
123
(3021/3) R eset V CC
(3022) R eset
(3021/3) Reset GND VCC
(3022) Reset
SOT-23 (Top View)
SOT-23-5 (Top View)
1
2
3
(3021/3) Reset _GND
(3022) Reset
V_CC
SOT-89 (Top View)
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise
customers to obtain the latest version of relevant information to verify before placing orders.
Copyright  ANPEC Electronics Corp.
1
Rev. A.2 - Oct., 2003
www.anpec.com.tw