R3118x Series
0.6V detect VD with Delay Function and SENSE pin
No.EK-242-111001 CMOS Voltage Detector
The R3118x Series are CMOS-based voltage detector ICs with the built-in output delay circuit. Since R3118x has a SENSE pin for
monitoring voltage separately from the power pin, its reset signal does not become unstable under the condition that the power
supply is sufficient to operate the IC, and the "L" can be maintained. The detector threshol d 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 (ISS) ························Typ. 0.4μA (VSENSE=6.0V, VDD=6.0V)
• Operating Voltage Range (VDD) ······1.0V to 6.0V
• Detector Threshold Range (-VDET)··0.6V to 5.0V (internally fixed)
• Output Delay···································Typ. 100ms delay set with a 0.022μF
external capacitor
• Reset Signal ···································"L"
• Detector Threshold Accuracy ·········± 1.5% (-VDET ≥ 1.6V)
•
Temp. coeff. of Detector Threshold
······Typ. ± 30ppm/°C
• Two Output Types···························Nch. Open Drain and CMOS
• Packages········································ DFN(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)
DOUTVDD
Vref
GND
Delay
Circuit
CD
SENSE
V
DD
Vref
GND
Delay
Circuit D
OUT
SENSE
C
D
SELECTION GUIDES TIMING CHART
Halogen Free
Package
Q'ty per Reel
Part No.
DFN(PLP)1212-6 5,000 pcs R3118K
.
xx
.
1
∗
-TR
SC-88A 3,000 pcs
R3118Q
.
xx
.
2
∗
-TR-FE
SOT-23-5 3,000 pcs
R3118N
.
xx
.
1
∗
-TR-FE
.
xx
.
: Specify the detector threshold within the range of
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
H
y
steresis
tdelay
GND
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 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
2
GND
3CD
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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