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参数资料
| 型号： | R3116Q411A-TR-FE |
| 厂商： | RICOH COMPANY LTD |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO4 |
| 封装： | HALOGEN AND LEAD FREE, SC-82AB, 4 PIN |
| 文件页数： | 15/25页 |
| 文件大小： | 441K |
| 代理商： | R3116Q411A-TR-FE |
R3116x
22
Voltage level Indicator Circuit (lighted when the power runs out)
(Nch Open Drain Output)
R3116xxx1A
Series
VDD
GND
OUT
VDD
CD
Detector Threshold Adjustable Circuit 1
(Nch Open Drain Output)
R3116xxx1A
Series
GND
VDD
Vup
Rup
OUT
Rb
VDD
Ra
CD
Adjustable Detector Threshold
=(-VDET)×(Ra+Rb)/Rb
Hysteresis Voltage
=(VHYS)×(Ra+Rb)/Rb
1) To prevent oscillation, set Ra <
= 1k, Rb <
= 100.
2) If the value of Ra is set excessively large, voltage drop
may occur caused by the supply current of IC itself,
and detector threshold and hysteresis voltage may
vary.
3) If Vup and VDD are connected, the voltage dropdown
caused by Rup, may cause difference in the hysteresis
voltage.
Detector Threshold Adjustable Circuit 2
(Nch Open Drain Output)
R3116xxx1A
Series
GND
VDD
Vup
Rup
OUT
Rb
VDD
Ra
C
CD
Adjustable Detector Threshold
=(-VDET)×(Ra+Rb)/Rb
Hysteresis Voltage
=(VHYS)×(Ra+Rb)/Rb
1) To prevent oscillation, set Ra <
= 10k, Rb <
= 1k,
C >
= 1μF.
2) If the value of Ra is set excessively large, voltage drop
may occur caused by the supply current of IC itself,
and detector threshold and hysteresis voltage may
vary.
3) If Vup and VDD are connected, the voltage dropdown
caused by Rup, may cause difference in the hysteresis
voltage.
4) If the value of Ra, Rb and C are set excessively large,
the delay of the start-up may become too long.
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