*R3112Qxx2 (SC-88A) is the limited product. As of March in 2018.
R3112x SERIES
LOW VOLTAGE DETECTOR WITH OUTPUT DELAY
NO. EA-087-160310
OUTLINE
The R3112x Series are CMOS-based voltage detector ICs with high detector threshold accuracy and ultra-low
supply current, which can be operated at an extremely low voltage and is used for system reset as an example.
Each of these ICs consists of a voltage reference unit, a comparator, resistor net for detector threshold setting,
an output driver, a hysteresis circuit, and an output delay circuit. The detector threshold is fixed with high
accuracy internally and does not require any adjustment. Two output types, Nch open drain type and CMOS type
are available.
Three types of packages, SOT-23-5, small SC-82AB, SC-88A and ultra-small SON1612-6 can be selected so
that high density mounting on boards is possible.
FEATURES
Built-in Output Delay Circuit ............................................... Typ. 100ms with an external capacitor: 0.022F
Supply Current ................................................................... Typ. 0.5A (R3112x27xA/C, V
DD
½2.6V)
Operating Voltage .............................................................. 0.7 to 6.0V (Topt½25C)
Detector Threshold............................................................. 0.9V to 5.0V (0.1V steps)
Detector Threshold Accuracy .............................................
2.0%
Temperature-Drift Coefficient of Detector Threshold
............
Typ.
100ppm/C
Output Types ...................................................................... Nch Open Drain and CMOS
Packages ........................................................................... SON1612-6, SC-82AB, SC-88A, SOT-23-5
APPLICATIONS
CPU and Logic Circuit Reset
Battery Checker
Window Comparator
Wave Shaping Circuit
Battery Back-up Circuit
Power Failure Detector
1
*R3112Qxx2 (SC-88A) is the limited product. As of March in 2018.
R3112x
BLOCK DIAGRAMS
R3112xxxxA
V
DD
R
D
OUT V
DD
R
D
R3112xxxxC
+
-
Vref
GND
+
OUT
-
Vref
GND
C
D
C
D
SELECTION GUIDE
The package type, the detector threshold, and the output type for the ICs can be selected at the users’
request.
Product Name
R3112Dxx1-TR-FE
R3112Qxx1-TR-FE
R3112Qxx2-TR-FE
R3112Nxx1-TR-FE
Package
SON1612-6
SC-82AB
SC-88A
SOT-23-5
Quantity per Reel
4,000 pcs
3,000 pcs
3,000 pcs
3,000 pcs
Pb Free
Yes
Yes
Yes
Yes
Halogen Free
Yes
Yes
Yes
Yes
xx : The detector threshold can be designated in the range from 0.9V(09) to 5.0V(50) in 0.1V steps.
: Designation of Output Type
(A) Nch Open Drain
(C) CMOS
2
*R3112Qxx2 (SC-88A) is the limited product. As of March in 2018.
R3112x
PIN CONFIGURATION
SON1612-6
6
5
4
SC-82AB
4
3
SC-88A
5
4
SOT-23-5
5
4
(mark side)
(mark side)
(mark side)
(mark side)
1
2
3
1
2
1
2
3
1
2
3
PIN DESCRIPTION
SON1612-6
Pin No
1
2
3
4
5
6
Symbol
OUT
GND
C
D
NC
GND
V
DD
Symbol
V
DD
GND
C
D
OUT
Symbol
V
DD
NC
GND
C
D
OUT
Symbol
OUT
V
DD
GND
NC
C
D
Voltage Supply Pin
Ground Pin
No Connection
Pin for External Capacitor (for setting output delay)
Voltage Supply Pin
No Connection
Ground Pin
Pin for External Capacitor (for setting output delay)
Output Pin (Output "L" at detection)
Pin Description
Output Pin (Output "L" at detection)
Voltage Supply Pin
Ground Pin
Pin for External Capacitor (for setting output delay)
Output Pin (Output "L" at detection)
Pin Description
Ground Pin
Pin for External Capacitor (for setting output delay)
No Connection
Ground Pin
Voltage Supply Pin
Pin Description
Pin Description
Output Pin (Output "L" at detection)
SC-82AB
Pin No
1
2
3
4
SC-88A
Pin No
1
2
3
4
5
SOT-23-5
Pin No
1
2
3
4
5
3
*R3112Qxx2 (SC-88A) is the limited product. As of March in 2018.
R3112x
ABSOLUTE MAXIMUM RATINGS
Symbol
V
DD
V
OUT
I
OUT
Supply Voltage
Output Voltage (CMOS)
Output Voltage (Nch)
Output Current
Power Dissipation (SON1612-6)
P
D
Power Dissipation (SC-82AB)
Power Dissipation (SC-88A)
Item
Rating
6.5
V
SS
0.3
to V
DD
0.3
V
SS
0.3
to 6.5
20
500
380
380
420
40
to 85
55
to 125
Unit
V
V
V
mA
mW
Power Dissipation (SOT-23-5)
T
opt
T
stg
Operating Temperature Range
Storage Temperature Range
C
C
)
For Power Dissipation, please refer to PACKAGE INFORMATION.
ABSOLUTE MAXIMUM RATINGS
Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the
permanent damages and may degrade the life time and safety for both device and system using the device
in the field.
The functional operation at or over these absolute maximum ratings is not assured.
RECOMMENDED OPERATING CONDITIONS (ELECTRICAL CHARACTERISTICS)
All of electronic equipment should be designed that the mounted semiconductor devices operate within the
recommended operating conditions. The semiconductor devices cannot operate normally over the
recommended operating conditions, even if when they are used over such conditions by momentary
electronic noise or surge. And the semiconductor devices may receive serious damage when they continue
to operate over the recommended operating conditions.
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*R3112Qxx2 (SC-88A) is the limited product. As of March in 2018.
R3112x
ELECTRICAL CHARACTERISTICS
R3112xxxxA/C
Symbol
-V
DET
V
HYS
Item
Detector Threshold
Detector Threshold
Hysteresis
-V
DET
<1.1V
1.1V ≤-V
DET
<1.6V
I
SS
Supply Current
1.6V ≤-V
DET
<3.1V
3.1V ≤-V
DET
<4.1V
4.1V ≤-V
DET
V
DDH
V
DDL
Maximum Operating Voltage
Minimum Operating
Voltage
T
opt
½25C
40C≤T
opt
≤85C
V
DS
½0.05V
V
DD
½0.7V
-V
DET
<1.1V
Nch
I
OUT
Output Current
(Driver Output Pin)
1.1V ≤-V
DET
<1.6V
1.6V ≤-V
DET
-V
DET
<4.0V
Pch
4.0V ≤-V
DET
V
TCD
C
D
pin Threshold
Voltage
V
DD
½-V
DET
1.1V
V
DS
½0.1V,
V
DD
½0.7V
I
CD
C
D
pin Output Current
-V
DET
<1.1V
1.1V ≤-V
DET
<1.6V
1.6V ≤-V
DET
R
D
-V
DET
/
T
opt
Output Delay Resistance
Detector Threshold
Temperature Coefficient
40C≤T
opt
≤85C
V
DS
½0.50V,
V
DD
½0.85V
V
DS
½0.50V,
V
DD
½1.00V
V
DS
½0.50V,
V
DD
½1.50V
V
DS
½0.50V
V
DD
½0.85V
V
DS
½0.50V
V
DD
½1.00V
V
DS
½0.50V
V
DD
½1.50V
V
DS
½2.1V
V
DD
½4.50V
V
DS
½2.1V
V
DD
½6.00V
0.01
0.05
0.2
1.0
1.5
2.0
V
DD
0.3
20
10
50
200
3.25
0.12
0.9
mA
1.8
3.0
3.5
mA
4.5
V
DD
0.5
70
400
450
500
6.5
100
13
M
ppm/
C
A
V
DD
0.7
V
V
DD
½-V
DET
0.1V
V
DD
½-V
DET
1.0V
V
DD
½-V
DET
0.1V
V
DD
½-V
DET
1.0V
V
DD
½-V
DET
0.1V
V
DD
½-V
DET
1.0V
V
DD
½-V
DET
0.1V
V
DD
½-V
DET
1.0V
V
DD
½-V
DET
0.1V
V
DD
½-V
DET
1.0V
Conditions
Min.
-V
DET
0.98
-V
DET
0.03
Typ.
Topt
½
25C
-V
DET
0.05
0.6
0.5
0.7
0.5
1.0
0.5
1.2
0.6
1.5
0.6
Max.
-V
DET
1.02
-V
DET
0.07
2.0
2.0
2.5
2.0
3.0
2.5
3.0
2.5
3.0
2.5
6.0
0.7
0.8
Unit
V
V
A
V
V
Minimum
Operating Voltage means the value of input voltage when output voltage maintains 0.1V or less.
(In the case of Nch Open Drain Type, Output pin is pulled up with a resistance of 470k to 5.0V.)
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