S-80733AL Ver la hoja de datos (PDF) - Seiko Instruments Inc

Número de pieza

componentes Descripción

Fabricante

S-80733AL

HIGH-PRECISION VOLTAGE DETECTOR

Seiko Instruments Inc 

HIGH-PRECISION VOLTAGE DETECTOR

S-807 Series

3. Change of detection voltage

In Nch open-drain output products of the S-807 Series, detection voltage can be changed with resistance dividers or diodes

as shown in Figures 29 and 30. In Figure 29, hysteresis width is also changed.

VDD

RA

(RA≤7.5kΩ)

RB

S-

VIN

807XX

AN/SN

OUT

+

(Nch open-drain

-

products)

VS

Detection voltage=

RA+RB

RB

•-VDET

Hysteresis width= RA+RB •-VHYS

RB

Note 1: The hysteresis width will be a little

wider than the value of the formula

above, because of the through current,

if RA and RB are larger.

Note 2: RA should be 7.5kΩ or less for

purpFoigseuroef 2p9rotection against

oscillation.

Figure 29

VDD

Vf1

Vf2

S-

VIN 807XX

AN/SN

OUT

(Nch open-drain

products)

VSS

Detection voltage=Vf1+Vf2+-VDET

Figure 30

Notes

• In CMOS output products of S-807 Series, high through current flows when detecting or releasing. If a high impedance is

connected to the input, oscillation may be caused by the through current when lowering the voltage during releasing.

• In TO-92 products, since there are projections and resin burrs on the roots of the lead terminals formed at the Tiebar-cut, do

not solder to them.

• When designing for mass production using an application circuit described here, take into account the deviation of

components and temperature characteristics.

• Seiko Instruments Inc. cannot take any responsibility for the patents on the circuits described here.

Seiko Instruments Inc.

39

Share Link: