R3112Q341C datasheet(11/30 Pages) RICOH

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R3112Q341C Datasheet(PDF) 11 Page - RICOH electronics devices division

Part #	R3112Q341C

Description	LOW VOLTAGE DETECTOR WITH OUTPUT DELAY

Download	30 Pages

Scroll/Zoom	100%

Manufacturer	RICOH [RICOH electronics devices division]

Direct Link	http://www.ricoh.com

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11 / 30 page

R3112x

• Operation of Output Delay

GND

Released Voltage (+VDET)

CD Pin Threshold Voltage (VTCD)

Output Delay Time(tD)

Output Voltage

Capacitor Voltage

Supply Voltage

When the supply voltage which is higher than released voltage is forced to VDD pin, charge to an external

capacitor starts, then capacitor voltage increases. Until the capacitor voltage reaches to CD Pin threshold voltage,

output voltage maintains “L”. When the capacitor voltage becomes higher than CD pin threshold voltage, output

voltage is reversed from "L” to "H". Where, the time interval between the rising edge of supply voltage and output

voltage reverse point means output delay time.

• Output Delay Time

Output Delay Time (tD) can be calculated with the next formula.

=0.69×RD×CD(s)

RD is internal resistor and set at 6.5M

Ω(Typ.) typically. CD(F) describes the capacitance value of an external

capacitor. Therefore,

=0.69×6.5×106×CD(s)

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