MANUAL RESET BUILT-IN DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING) HIGH-ACCURACY VOLTAGE DETECTOR

S-1003 Series

Seiko Instruments Inc.

34

2. Change of detection voltage (Nch open-drain output product only)

If there is not a product with a specified detection voltage value in the S-1003N Series, the detection voltage can be

changed by using a resistance divider or a diode, as seen in Figure 40 and Figure 41.

In Figure 40, hysteresis width also changes.

(Nch open-drain

output product)

*1

GND

≤ 100 kΩ)

R

100 k

Ω

VDD

CD

VSS

OUT

MR

*2

Detection voltage =

Hysteresis width =

(Nch open-drain

output product)

GND

R

100 k

Ω

VDD

CD

VSS

OUT

MR

*1

*1.

*1.

Ω or less to prevent oscillation.

*2.

may also be larger than the value given by

the above equation due to the feed-through

current.

Figure 40

Figure 41

Caution 1. The above connection diagram and constant will not guarantee successful operation.

Perform thorough evaluation using the actual application to set the constant.

2. Note that the hysteresis width may be larger as the following equation shows when using the

above connections. Perform thorough evaluation using the actual application to set the

constant.

Maximum hysteresis width =