FSP2200 Datasheet, PDF (1/7 Pages) FOSLINK SEMICONDUCTOR CO.,LTD – 3 PIN MICROPROCESSOR RESET MONITORS

3 PIN MICROPROCESSOR RESET MONITORS
„ FEATURES
z Precision VCC Monitor for 2.5 V, 3.0V, 3.3 V, and
5.0 V Supplies
z Fully Specified Over Temperature
z Available in Three Output Configurations
Push-Pull RESET Output
z 140ms min Power-On Reset Pulse Width
z 12µA Supply Current
z Guaranteed Reset Valid to Vcc=+1V
z Power Supply Transient Immunity
z No External Components
z SOT323-3L and SOT23-3L Packages
„ APPLICATIONS
z Computers
z Controllers
z Intelligent Instruments
z Critical MPU and MPU Power Monitoring
z Portable/Battery-Powered Equipment
z Automotive
FSP2200
„ GENERAL DESCRIPTION
The FSP2200 is a microprocessor supervisory circuits
used to monitor the power supplies in MPU and digital
systems. They provide excellent circuit reliability and
low cost by eliminating external components and
adjustments when used with +5V, +3.3V, +3.0V, or
+2.5V powered circuits
These curcuits perform a single function: they assert a
reset signal whenever the Vcc supply voltage declines
below a preset threshold, keeping it asserted for at
least 140ms after Vcc has risen above the reset
threshold. Reset thresholds suitable for operation whit
a variety of supply voltages are available. The
FSP2200 have push-pull outputs, an active-low
RESET output. The reset comparator is designed to
ignore fast transients on Vcc, and the outputs are
guaranteed to be in the correct logic state for Vcc down
to 1V. Low supply current makes the FSP2200 ideal for
use in portable equipment. The FSP2200 are available
in SOT323-3L or SOT23-3L packages.
„ PIN CONFIGURATION
(Top View)
GND 1
RESET 2
3 VCC
Pin
Name
Function
1
GND
Ground reference
Active-low output. RESET remains low while VCC is below the reset threshold,
2
RESET
and for a reset timeout period after VCC rises above the reset threshold.
3
VCC
Supply voltage (typ.)
„ TYPICAL OPERATION CIRCUIT
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2007-2-8