參數(shù)資料
型號(hào): R3111Q291C
廠商: Ricoh Co., Ltd.
英文描述: LOW VOLTAGE DETECTOR
中文描述: 低電壓檢測(cè)
文件頁(yè)數(shù): 11/20頁(yè)
文件大小: 218K
代理商: R3111Q291C
Rev.1.10
- 19 -
q
Voltage level Indicator Circuit (lighted when the power runs out)
(Nch Open Drain Output)
VDD
OUT
GND
R3111XXX1A
SERIES
q
Detector Threshold Adjustable Circuit
(Nch Open Drain Type Output)
VDD
OUT
GND
R3111XXX1A
SERIES
C
+
Ra
Rb
Adjusted Detector Threshold
=(-VDET)*(Ra+Rb)/Rb
Hysteresis Voltage
=(VHYS)*(Ra+Rb)/Rb
*) If the value of Ra is set excessively large, voltage drop may occur
caused by the supply current of IC itself, and detector threshold may
vary.
q
Window Comparator Circuit
(Nch Open Drain Output)
VDD
OUT
GND
R3111XXX1A
SERIES
R3111XXX1A
SERIES
VDET2
VDET1
VDD
VSS
OUT
VDET2
VDET1
q
Over-charge Preventing Circuit
VDD
OUT
GND
R3111XXX1C
SERIES
Light
R1
R2
R4
R3
D1
Solar
Batter
y
Load
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