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参数资料
| 型号： | R3112D351C-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, PDSO6 |
| 封装： | 1.60 X 1.20 MM, ROHS COMPLIANT, SON-6 |
| 文件页数： | 1/2页 |
| 文件大小： | 139K |
| 代理商： | R3112D351C-TR-F |
R3112x Series
Low Input VD with Delay Function
No.EK-091-091101
CMOS Voltage Detector
The R3112x Series are CMOS-based voltage detector ICs with the built-in output delay circuit, which can operate at low voltage.
The delay time can be set with an external capacitor.
FEATURES
Supply Current (I
SS1
) Typ. 0.5
μA (VDD=-VDET+1V, R3112x15x)
Operating Voltage Range (V
DD
) 0.7V to 6.0V (Topt=25
°C)
Detector Threshold Range (-V
DET
) 0.9V to 5.0V (internally fixed)
Output Delay Typ. 100ms delay set with a 0.022μF external
capacitor
Reset Signal "L"
Detector Threshold Accuracy ± 2%
Temp. coeff. of Detector Threshold Typ. ± 100ppm/°C
Two Output Types Nch. Open Drain and CMOS
PackagesSON1612-6, SC-82AB,
SC-88A, SOT-23-5
BLOCK DIAGRAMS
R3112xxxxA
R3112xxxxC
(Nch. open drain output)
(CMOS output)
OUT
VDD
Vref
CD
GND
RD
OUT
VDD
Vref
CD
GND
RD
SELECTION GUIDES
TIMING CHART
Package
Quantity per Reel
Part No.
SON1612-6
4,000 pcs
R3112D.xx.1.
-TR-F
SC-82AB
3,000 pcs
R3112Q.xx.1.
-TR-F
SC-88A
3,000 pcs
R3112Q.xx.2.
-TR-F
SOT-23-5
3,000 pcs
R3112N.xx.1.
-TR-F
.xx. : Specify the detector threshold within the range
0.9V (.09.) to 5.0V (.50.) in 0.1V steps.
. : Select the output type from (.A.) Nch. open drain or (.C.) CMOS.
tD
GND
VDDL
-VDET
+VDET
R3112xxxxA
tD
R3112xxxxC
tPHL
Hysteresis
Detector Threshold
Release Voltage
Minimum Operating
Voltage
Pull-up Voltage
Supply
Voltage
(VDD)
Output
Voltage
(VOUT)
Hysteresis
PACKAGES (Top View)
HOW TO DETERMINE DELAY TIME
SON1612-6
SC-82AB
SC-88A
SOT-23-5
1
2
3
6
5
4
1
2
4
3
1
3
5
4
2
1
3
5
4
2
1
OUT
2
GND
3
CD
4
NC
5
GND
6
VDD
1
VDD
2
GND
3
CD
4
OUT
1
VDD
2
NC
3
GND
4
CD
5
OUT
1
OUT
2
VDD
3
GND
4
NC
5
CD
Letting the capacity of an external capacitor CD (F),
the delay time (tD) is found from the following equation:
tD=0.69
× 6.5 × 106 × CD (s)
APPLICATIONS
Microcontroller and logic circuit reset
Battery checker
Window comparator
Wave shaping circuit
Battery back-up circuit
Power failure detector
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