AAT3526_06 Datasheet, PDF (1/9 Pages) Advanced Analogic Technologies – MicroPower™ Supervisory Circuit with Manual Reset

General Description
The AAT3526/7/8 PowerManager products are
members of AnalogicTech's Total Power Manage-
ment IC™ (TPMIC™) product family. These micro-
processor reset circuits are ideal for monitoring volt-
age supplies in portable systems, where extended
battery life is critical. They provide a reliable, low-
cost solution by eliminating external components.
The AAT3526/7/8 products 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 minimum of 150ms after
V_CC has risen back above the fixed threshold. They
are guaranteed to operate down to 1.2V and
designed to ignore fast line transients appearing on
V_CC. The AAT3526/7/8 series is available with three
output stage versions: AAT3526 push-pull active
low output; AAT3527 push-pull active high output;
and AAT3528 open drain active low output. The
quiescent supply current is extremely low, typically
1µA, making this device ideal for portable battery-
operated equipment.
AAT3526/7/8 devices are available in a Pb-free,
4-pin SOT143 package and are specified over the
-40°C to +85°C operating temperature range.
Typical Application
V_CC
VCC
AAT3526
MR AAT3527 ^RESET
AAT3528 ^(RESET)
AAT3526/7/8
MicroPower™ Supervisory Circuit
with Manual Reset
Features
PowerManager^™
• Input Voltage Range: 1.2V to 5.5V
• Operation Down to 1.2V
• Extremely Low Quiescent Current: Less
Than 2µA
• High Accuracy Detection Threshold: ±1.5%
• Monitor Power Supply Voltages
• Fixed Thresholds From 2.2V to 4.6V
• Minimum 150ms Reset Pulse Width With Fast
Delay Time <20µs
• Debounced Manual Reset Input
• Available Output Configurations:
— Open-Drain Output
— CMOS Active High Output
— CMOS Active Low Output
• Temperature Range: -40°C to +85°C
• 4-Pin SOT143 Package
• 4kV ESD Rating
Applications
• Cell Phones
• Embedded Systems
• Intelligent Instruments
• Notebook Computers
• Portable Electronics
*
VCC
100k
(nominal)
RESET
INPUT
µP
GND
GND
*AAT3528 Only
3526.2006.03.1.6
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