3 PIN MICROPROCESSOR RESET MONITORS

FSP2200

2007-2-8

1/7

PIN CONFIGURATION

(Top View)

Pin

Name

Function

1

GND

Ground reference

2

RESET

Active-low output. RESET remains low while VCC is below the reset threshold,

and for a reset timeout period after VCC rises above the reset threshold.

3

VCC

Supply voltage (typ.)

TYPICAL OPERATION CIRCUIT

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.

FEATURES

Precision VCC Monitor for 2.5 V, 3.0V, 3.3 V, and

5.0 V Supplies

Fully Specified Over Temperature

Available in Three Output Configurations

Push-Pull RESET Output

140ms min Power-On Reset Pulse Width

12µA Supply Current

Guaranteed Reset Valid to Vcc=+1V

Power Supply Transient Immunity

No External Components

SOT323-3L and SOT23-3L Packages

APPLICATIONS

Computers

Controllers

Intelligent Instruments

Critical MPU and MPU Power Monitoring

Portable/Battery-Powered Equipment

Automotive

3

1

2

RESET

GND

VCC