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参数资料
| 型号： | R3114K491C-TR-F |
| 厂商： | RICOH COMPANY LTD |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, DSO4 |
| 封装： | 1 X 1 MM, LEAD FREE, DFN-4 |
| 文件页数： | 18/26页 |
| 文件大小： | 681K |
| 代理商： | R3114K491C-TR-F |
R3114x
25
Detector Threshold Adjustable Circuit 1 (Nch Open Drain Output)
Detector Threshold Adjustable Circuit 2 (Nch Open Drain Output)
Window Comparator Circuit (Nch Open Drain Output)
R3114A
Series
GND
VDD
OUT
VDD
R1
C
R2
Vup
Rup
R3114A
Series
GND
VDD
Rup1
OUT
VDD
R3114A
Series
GND
VDD
Rup2
OUT
-VDET1
-VDET2
WC_OUT
GND
WC_OUT
VDD
-VDET2
-VDET1
R3114C
Series
GND
OUT
VDD
Loa
d
Solar
Battery
R1
R2
R3
R4
D1
R3114A
Series
GND
VDD
OUT
VDD
R1
R2
Vup
Rup
R3114A
Series
GND
VDD
Rup
VDD
OUT
Adjustable Detector Threshold = (-Vdet) x (R1+R2) / R2
Hysteresis Voltage = (VHYS) x (R1+R2) / R2
*1) To prevent oscillation, set R1≤1k, R2≤100
*2) If the value of R1 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.
Adjustable Detector Threshold = (-VDET) x (R1+R2) / R2
Hysteresis Voltage = VHYS x (R1+R2) / R2
*1) To prevent oscillation, set R1≤100k, C≥0.01uF.
*2) If the value of R1 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 R1, R2 and C are set excessively large, the
delay of the start-up may become too long.
Over-charge Preventing Circuit
Voltage level Indicator Circuit
(lighted when the power runs out)
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