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參數(shù)資料
| 型號： | R3118Q402C-TR-FE |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5 |
| 封裝： | HALOGEN AND LEAD FREE, SC-88A, 5 PIN |
| 文件頁數(shù)： | 14/23頁 |
| 文件大?。?/td> | 481K |
| 代理商： | R3118Q402C-TR-FE |
R3118x
21
17) Release Output Delay time vs. Over-drive Voltage
SENSE pin
Voltage VSENSE
Time t
Released Voltage
(+VDET)
DOUT pin Voltage
VDOUT
Time t
Release Output
Delay Time（tdelay）
Over-drive Voltage
(VOD)
図見出し
R3118x06xA/C（CD
=none）
R3118x50xA/C（CD
=none）
0
50
100
150
200
250
300
350
400
450
500
10
100
1000
Over Drive Voltage VOD (mV)
Release
Delay
Time
t
del
ay
(
μ
s)
VDD=1V
VDD=6V
0
500
1000
1500
2000
2500
3000
3500
10
100
1000
Over Drive Voltage VOD (mV)
Release
Delay
Time
t
del
ay
(
μ
s)
VDD=1V
VDD=6V
If the pulse is shorter than the output release delay time, the R3118 cannot be released and "H" does not
output from DOUT pin.
If the attachment capacitor for CD pin for setting a delay time is too small and the difference between the
released voltage threshold and the actual released voltage is too small or the slope for rising voltage of the
SENSE pin is too slow, the output delay time tolerance will be worse.
Ex. Attachment capacitor
=0.0001μF, Released voltage threshold=4.725V, Actual released voltage=4.75V In this case, the
calculated delay time
=0.4545ms, however, over-drive voltage is only 25mV. Therefore, the actual delay time will be
approximately 2.4545ms. If the attachment capacitor
=0.001μF and other conditions are same as above, the calculated
delay time
=4.545ms, and the actual delay time will be approximately 6.545ms. If the attachment capacitor=0.01μF and
other conditions are same as above, the calculated delay time
=45.45ms, and the actual delay time will be approximately
47.45ms.
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