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参数资料
| 型号： | R3118N272C-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, PDSO5 |
| 封装： | ROHS COMPLIANT, SOT-23, 5 PIN |
| 文件页数： | 1/2页 |
| 文件大小： | 140K |
| 代理商： | R3118N272C-TR-F |
R3118x Series
0.6V detect VD with Delay Function and SENSE pin
No.EK-242-091101
CMOS Voltage Detector
The R3118x Series are CMOS-based voltage detector ICs with the built-in output delay circuit that can operate at low voltage. Since
R3118x has a SENSE pin for monitoring voltage separately from the power pin, its reset signal does not become unstable as long as
power supply is secured and the "L" can be maintained. The detector threshold can be specified from 0.6V. The delay time can be set
with an external capacitor connected to CD pin. In addition to SOT-23-5 and SC-88A packages, a 1.2mm square DFN(PLP)1212-6
package is also available.
FEATURES
Supply Current (I
SS
) Typ. 0.4
μA (at release, VDD=6V)
Operating Voltage Range (V
DD
) 1.0V to 6.0V
Detector Threshold Range (-V
DET
) 0.6V to 5.0V (internally fixed)
Output DelayTyp. 100ms delay set with a 0.022μF
external capacitor
Reset Signal "L"
Detector Threshold Accuracy ± 1.5% (-V
DET >
= 1.6V)
Temp. coeff. of Detector ThresholdTyp. ± 30ppm/°C
Two Output TypesNch. Open Drain and CMOS
PackagesDFN(PLP)1212-6, SC-88A, SOT-23-5
(The above shows specification at Topt=25
°C. Design assurance value at -40°C <
= Topt <
= 85°C is also available. For details, please refer to the datasheet.)
BLOCK DIAGRAMS
R3118xxxxA
R3118xxxxC
(Nch. open drain output)
(CMOS output)
DOUT
VDD
Vref
GND
Delay
Circuit
CD
SENSE
VDD
Vref
GND
Delay
Circuit
CD
DOUT
SENSE
SELECTION GUIDES
TIMING CHART
Package
Quantity per Reel
Part No.
DFN(PLP)1212-6
5,000 pcs
R3118K.xx.1
-TR
SC-88A
3,000 pcs
R3118Q.xx.2
-TR-F
SOT-23-5
3,000 pcs
R3118N.xx.1
-TR-F
.xx. : Specify the detector threshold within 0.6 (.06.) to 5.0V (.50.)
in 0.1V steps.
.
. : Select the output type from (.A.) Nch. open drain or (.C.) CMOS.
Detector Threshold
Hysteresis
tdelay
GND
VDDL
-VDET
+VDET
Detector Threshold
Released Voltage
Minimum Operating
Voltage
Pull-up Voltage
SENSE Pin Voltage
(VSENSE)
Output Voltage
(VOUT)
R3118xxxxA
tdelay
R3118xxxxC
treset
Supply Voltage
(VDD)
Detector Threshold
Hysteresis
Supply Voltage
(VDD)
PACKAGES (Top View)
DFN(PLP)1212-6
SC-88A
SOT-23-5
3
4
2
5
1
6
13
54
2
13
54
2
1
SENSE
2CD
3
GND
4VDD
5
NC
6DOUT
1DOUT
2
GND
3VDD
4CD
5
SENSE
1DOUT
2VDD
3
GND
4CD
5
SENSE
APPLICATIONS
Microcontroller and logic circuit reset
Battery checker
Wave shaping circuit
Battery back-up circuit
Window comparator
Power failure detector
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