M51981ML Просмотр технического описания (PDF) - MITSUBISHI ELECTRIC

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M51981ML

VOLTAGE DETECTING, SYSTEM RESETTING IC SERIES

MITSUBISHI ELECTRIC  

MITSUBISHI <Standard Linear ICs>

M51981ML / SL

VOLTAGE DETECTING, SYSTEM RESETTING IC SERIES

DESCRIPTION

M51981 are semiconductor integrated circuits designed for

detecting supply voltage and resetting all types of logic circuits such

as CPUs.

They find extensive applications,including battery checking circuits,

level detecting circuit and waveform shaping circuit.

FEATURES

• Few external parts.

• Low threshold operating voltage (Supply voltage to keep

low-state at low supply voltage) …… 0.6V(TYP.) at RL=22kΩ

• Wide supply voltage range ………… 2 to 17V

• Sudden change in power supply has minimal effect on the ICs

• Wide application range

PIN CONFIGURATION (TOP VIEW)

3 OUTPUT

2 GND

1 SUPPLY

VOLTAGE

Outline SOT-89

APPLICATION

• Reset pulse generation for almost all logic circuits

• Battery checking, level detecting, waveform shaping circuits

• Delayed waveform generator

• Switching circuit to a back-up power supply

• DC/DC converter

• Over voltage protection circuit

(1) SUPPLY

VOLTAGE

(2) GND

(3) OUTPUT

RECOMMENDED OPERATING CONDITION

• Supply voltage range ………… 2 to 17V

(1) (2) (3)

Outline TO-92L

BLOCK DIAGRAM

SUPPLY VOLTAGE

1

R1

R2

1.25V

2

GND

( 1/ 3 )

3 OUTPUT

1999-8- 24

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