S-80833CNMC-B8S-T2 datasheet(34/54 Pages) SII

Part #	S-80833CNMC-B8S-T2

Description	ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR

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Manufacturer	SII [Seiko Instruments Inc]

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ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR

S-808xxC Series

Rev.3.2_00

34

Seiko Instruments Inc.

3. Change of Detection Voltage

In Nch open-drain output products of the S-808xxC series, detection voltage can be changed using

resistance dividers or diodes as shown in Figures 30 to 31. In Figure 30, hysteresis width also changes.

(Nch open-drain

output products)

RA

*1

OUT

VIN

VSS

VDD

+

−

S-

808xxCN

RB

(RA

≤75 kΩ)

DET

B

A

V

R

voltagae

Detection

−

•

+

=

HYS

B

A

V

R

width

Hysterisis

•

+

=

(Nch open-drain

output product)

Vf1

OUT

VIN

VSS

VDD

S-

808xxCN

Vf2

Detection voltage=Vf1+Vf2+(

−VDET)

*1.

RA should be 75 k

Ω or less to prevent oscillation.

Caution If RA and RB are large, the hysteresis

width may aloso be larger than the value

given by the above equation due to the

through-type current (which flows

slightly in an Nch open-drain product).

Figure 30

Figure 31

Caution The above connection diagram and constants do not guarantee correct operation. Perform

sufficient evaluation using the actual application to set the constants.

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S-80833CNMC-B8S-T2 Datasheet(PDF) 34 Page - Seiko Instruments Inc

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