*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, VDD2.6V)
Operating Voltage .............................................................. 0.7 to 6.0V (Topt25C)
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
R3112xxxxC
OUT VDD
VDD
RD
RD
+
+
-
-
OUT
Vref
Vref
GND
GND
CD
CD
SELECTION GUIDE
The package type, the detector threshold, and the output type for the ICs can be selected at the users’
request.
Product Name
Package
Quantity per Reel
Pb Free
Halogen Free
R3112Dxx1-TR-FE
SON1612-6
4,000 pcs
Yes
Yes
R3112Qxx1-TR-FE
SC-82AB
3,000 pcs
Yes
Yes
R3112Qxx2-TR-FE
SC-88A
3,000 pcs
Yes
Yes
R3112Nxx1-TR-FE
SOT-23-5
3,000 pcs
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
4
(mark side)
1
2
SC-82AB
3
SC-88A
5
(mark side)
(mark side)
3
1
2
4
1
2
3
SOT-23-5
5
4
(mark side)
1
2
3
PIN DESCRIPTION
SON1612-6
Pin No
Symbol
Pin Description
1
OUT
Output Pin (Output "L" at detection)
2
GND
Ground Pin
3
CD
Pin for External Capacitor (for setting output delay)
4
NC
No Connection
5
GND
6
VDD
Ground Pin
Voltage Supply Pin
SC-82AB
Pin No
Symbol
1
VDD
2
GND
3
CD
4
OUT
Pin Description
Voltage Supply Pin
Ground Pin
Pin for External Capacitor (for setting output delay)
Output Pin (Output "L" at detection)
SC-88A
Pin No
Symbol
Pin Description
1
VDD
Voltage Supply Pin
2
NC
No Connection
3
GND
4
CD
5
OUT
Ground Pin
Pin for External Capacitor (for setting output delay)
Output Pin (Output "L" at detection)
SOT-23-5
Pin No
Symbol
Pin Description
1
OUT
Output Pin (Output "L" at detection)
2
VDD
Voltage Supply Pin
3
GND
4
NC
No Connection
5
CD
Pin for External Capacitor (for setting output delay)
Ground Pin
3
*R3112Qxx2 (SC-88A) is the limited product. As of March in 2018.
R3112x
ABSOLUTE MAXIMUM RATINGS
Symbol
VDD
VOUT
IOUT
Item
Rating
Unit
6.5
V
VSS0.3 to VDD0.3
V
VSS0.3 to 6.5
20
V
Supply Voltage
Output Voltage (CMOS)
Output Voltage (Nch)
Output Current
PD
Power Dissipation (SON1612-6)
500
Power Dissipation (SC-82AB)
380
mA
mW
Power Dissipation (SC-88A)
380
Power Dissipation (SOT-23-5)
420
Topt
Operating Temperature Range
40 to 85
C
Tstg
Storage Temperature Range
55 to 125
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.
4
*R3112Qxx2 (SC-88A) is the limited product. As of March in 2018.
R3112x
ELECTRICAL CHARACTERISTICS
Topt25C
R3112xxxxA/C
Symbol
Item
-VDET
Detector Threshold
VHYS
Detector Threshold
Hysteresis
Conditions
-VDET
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