NJM2078M Просмотр технического описания (PDF) - Japan Radio Corporation

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Компоненты Описание

производитель

NJM2078M

VOLTAGE DETECTOR

Japan Radio Corporation  

■ TYPICAL APPLICATION

1. Hysterisis

NJM2078

VIN(A)･=･ 1 +

R1 + R2

R3



VR

VIL(A)･=･

1 +

R2

R3



VR

Each equation is calculated without considering the

saturation voltage. It is necessary to compensate by

the saturation voltage fit to lead conditions, precisely.

2. Detection of Abnormal Supply Voltage

VIN(B)･=･ 1 +

R1

R2



VR

VIL(B)･=･

1 +

R1

R2 + R3



VR

Hysterisis ; Positive feedback from pin 2 or pin 7 (ref.1).

V+H

=

1 +

R1

R2

 VR

V+L

=

1 +

R3

R4

 VR

Note : V+≥2.5V

Ver.2003-12-09

-5-

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