RN5VD
•
Output Delay Operation
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
state.
Voltage) after that the Output Voltage is reversed to
“H”
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
6
tD=0.69×10 ×CD (s)
17
RICOH [ RICOH ELECTRONICS DEVICES DIVISION ]
