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112099

FEATURES

Automatically restarts microprocessor after

power failure

Maintains active-high reset for 350 ms after

Accurate 5%, 10% or 15% microprocessor 5V

power supply monitoring

Reduces need for discrete components

Precision temperature-compensated voltage

reference and voltage sensor

Low-cost TO-92 package or surface mount

SOT-223 package

Internal 5k pull-up resistor

Operating temperature of -40

°C to +85°C

PIN ASSIGNMENT

PIN DESCRIPTION

PIN 1

Ground

PIN 2

Reset

PIN 3

PIN 4

Ground (SOT-223 only)

DESCRIPTION

The DS1833 EconoReset uses a precision temperature compensated reference and comparator circuit to

tolerance condition, the reset signal is kept in the active state for approximately 350 ms to allow the

power supply and processor to stabilize.

OPERATION - POWER MONITOR

The DS1833 provides the functions of detecting out-of-tolerance power supply conditions and warning a

processor-based system of impending power failure.

defined by the tolerance of the part selected, the RST signal is asserted. On power-up, RST is kept active

for approximately 350 ms after the power supply has reached the selected tolerance. This allows the

power supply and microprocessor to stabilize before RST is released.

DS1833

5V EconoReset

www.dalsemi.com

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1 2 3

TO-92 PACKAGE

See Mech.

Drawings Section

2

3

4

SOT-223 PACKAGE

See Mech.

Drawings Section

1

DALLAS

DS1833