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ME2808 데이터시트 PDF : 부품 기능 및 핀배열

부품번호 ME2808
기능 Voltage Detectors
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ME2808 데이터시트 및 ME2808 PDF

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ME2808 pdf, 반도체, 판매, 대치품
ME2808
Functional Description
The ME2808 series is a set of voltage detectors equipped with a high stability voltage reference which is
connected to the negative input of a comparator denoted as VREF in the following figure (Fig. 1).When the voltage
drop to the positive input of the comparator (i,e,VB) is higher than VREF, VOUT goes high, M1 turns off, and VB is
ex-pressed as VBH=VIN×(RB+RC)/(RA+RB+RC).If VIN is decreased so that VB falls to a value that is less than VREF, the
comparator output inverts (from high to low), VOUT goes low, VC is high, M1 turns on, RC is bypassed, and VB
becomes: VBL=VIN×RB/(RA+RB), which is less than VBH. By so doing the comparator out-put will stay low to prevent
the circuit from oscillating when VB VREF. If VIN falls bellow the minimum operating voltage, the output becomes
undefined. When VIN goes from low to VIN×RB/(RA+RB) >VREF, the comparator output goes high and VOUT goes high
again. The detection voltage is as defined:
VDET()=( RA+RB+RC)×VREF/( RB+RC)
The release voltage is as defined:
VDET(+)=(RA+RB)×VREF / RB
The hysteresis width is:
VHYS=VDET(+)VDET()
Fig.1 demonstrates the NMOS output type with positive output polarity (VOUT is normally high, active low).
Fig.1 NMOS output voltage detector (ME2808)
V03
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ME2808 전자부품, 판매, 대치품
SOT23-5
TO-92
ME2808
V03
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ME2808

The functions of this components is a Voltage Detectors.

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