RN5VD25C 데이터 시트보기 (PDF) - RICOH Co.,Ltd.

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RN5VD25C

VOLTAGE DETECTOR WITH OUTPUT DELAY

RICOH Co.,Ltd. 

• Output Delay Operation

RN5VD

Supply Voltage

(VDD)

Released Voltage (+VDET)

CD pin Voltage

CD pin Threshold Voltage (VTCD)

GND

Output Voltage

(OUT)

GND

Output Delay Time (tD)

When the Supply Voltage crosses the Released Voltage (+VDET) from a low value to a value higher

than the Released Voltage (+VDET) , the CD pin Voltage starts to increase (starts to charge the external

capacitor).

The Output Voltage is maintained at “L” level until the CD pin Voltage reaches to VTCD (CD pin Threshold

Voltage) after that the Output Voltage is reversed to “H” state.

The time period from beginning of charging capacitor to Output Voltage reversing represents the

Output Delay (tD) .

• Output Delay Time

Delay time (tD) can be set accordance with the capacitance CD of external capacitor as below

tD=0.69×106×CD (s)

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