IMP6303
P
OWER
M
ANAGEMENT
3-Pin Microcontroller
Power Supply Supervisor
The IMP6303 is a 4.0V power supply supervisor circuits optimized for low-
power microprocessor (µP), microcontroller (µC) and digital systems.
A reset signal is issued if the power supply voltage drops below a preset
reset threshold and is asserted for at least 140ms after the supply has
risen above the reset threshold. The IMP6303 has an active-low RESET
output that is guaranteed to be in the correct state for V
CC
down to 1.1V.
The reset comparator is designed to ignore fast transients on V
CC
.
Low supply current makes the IMP6303 ideal for use in portable and
battery operated equipment. The IMP6303 is available in a compact 3-pin
SOT23, TO-92 and 5 pin SOT23-5 packages.
Key Features
N
Monitor 4.0V supply
N
140ms min. reset pulse width
N
Active-low reset valid with 1.1V supply
N
Small 3-pin SOT-23 package
N
Small 3-pin TO-92 package
N
Small 5-pin SOT-23-5 package
N
No external components
N
Specified over full temperature range
— – 40°C to 105°C
Applications
N
N
N
N
N
Embedded controllers
Battery operated systems
Intelligent instruments
Wireless communication systems
PDAs and handheld equipment
Block Diagrams
VCC
VCC
IMP6303
RESET
(RESET)
GND
RESET
Input
VCC
µP
GND
6303_01.eps
© 2001 IMP, Inc.
408-432-9100/www.impweb.com
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