EC95808NXXC7SR datasheet(8/14 Pages) E-CMOS

Part #	EC95808NXXC7SR

Description	Ultra-Low Quiescent Current Voltage Detector

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Manufacturer	E-CMOS [E-CMOS Corporation]

Direct Link	http://www.ecmos.com.tw/

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8 / 14 page

EC95808

Ultra-Low Quiescent Current Voltage Detector

E-CMOS Corp. (www.ecmos.com.tw)

Page 8 of 14

4F17N Rev. F001

Detail Description

Basic Operation

For EC95808C CMOS Active low output:

(1) When the input voltage VIN is higher than the release voltage VREL (VREL = VDET + VHYS), the N-ch MOS is

OFF and P-ch MOS is ON to provide VIN at the output. Since NMOS is OFF, the comparator input voltage is

VIN x (R2+R3) / (R1+R2+R3)

When the VIN goes below the VREL, VIN keeps at the output since VIN remains above the detection voltage VDET. The

difference between VREL and VDET is the hysteresis range.

(2) When the VIN goes below the VDET, the N-ch MOS is ON and P-ch MOS is OFF to provide GND level at the output.

At this time NMOS is ON, the comparator input voltage is

VIN x R2 / (R1+R2)

(3) When the VIN falls below the minimum opera-ting voltage, the output becomes undefined changed to VIN if the

output is pulled up to VIN.

(4) When the VIN rises above the minimum opera-ting voltage, the GND level appears at the output. The GND level

keeps at the output even when VIN goes above the detection voltage VDET, as long as it doesn’t exceed the release

voltage VREL.

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