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參數(shù)資料
| 型號(hào)： | R3118Q402A-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)： | 15/23頁 |
| 文件大?。?/td> | 481K |
| 代理商： | R3118Q402A-TR-FE |
R3118x
22
TECHNICAL NOTES
When R3118xxxxA/C is used in the circuit as SENSE pin and VDD pin are connected each other such as in Fig.
A, if the value of R1 is set excessively large, the dropdown voltage caused by the consumption current of IC itself,
may vary the detector threshold and the released voltage. Also, if the value of R1 is set excessively large, there
may cause oscillation generated by cross conduction current with released operation. If the R1 value is more
than VHYS/0.25(k
Ω), the detector may not released.
In the case that the R3118xxxxA/C is used in the circuit as SENSE pin and VDD pin are connected each other
such as in Fig.B, if the value of R1 is set excessively large, there may cause the shift of released output delay
time or oscillation generated by the cross conduction current with released operation.
In the case that the R3118xxxxA is used in the circuit such as in Fig.C, if R1 value is small, DOUT pin voltage at
detector may rise. In the case that the R3118xxxxC is used in the circuit such as in Fig.C, current may flow from
VDD pin to DOUT pin, or from DOUT pin to VDD pin.
In the case that the R3118xxxxC is used in the circuit such as in Fig.D, if R1 value is small, DOUT pin voltage at
release may drop.
R1
GND
VDD
DOUT
SENSE
CD
R3118x
Series
R1
GND
VDD
DOUT
SENSE
CD
R3118x
Series
Fig. A
Fig. B
GND
VDD
DOUT
SENSE
CD
R1
R3118x
Series
GND
VDD
DOUT
SENSE
CD
R1
R3118x
SERIES
Fig. C
Fig. D
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