R3114x SERIES
Low Voltage Detector
NO.EA-160-071109
OUTLINE
The R3114 series are CMOS-based voltage detector IC 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, resistors for detector threshold
setting, an output driver and a hysteresis 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.
The R3114 series are operable at a lower voltage than that of the R3111x series, and can be driven by a
single battery.
Three types of packages, SOT-23-5, SC-82AB, and DFN(PLP)1010-4 are available.
FEATURES
Ultra-low Supply Current ··············································· TYP. 0.35µA(at V
DD
=2.5V, Topt=25°C)
Wide Range of Operating Voltage ································· 0.45V to 6.0V(Topt=25°C)
Detector Threshold ························································ Stepwise setting with a step of 0.1V in the range of
0.7V to 5.0V
High Accuracy Detector Threshold ································ ±0.8%(Topt=25°C)
Detector Threshold temperature Coefficient·················· ±30ppm/°C (TYP.)
Two Output Types·························································· Nch Open Drain and CMOS
Three Types of Packages·············································· SOT-23-5(Mini-mold), SC-82AB, DFN(PLP)-1010-4
APPLICATIONS
CPU and Logic Circuit Reset
Battery Checker
Window Comparator
Wave Shaping Circuit
Battery Back-up Circuit
Power Failure Detector
1
R3114x
BLOCK DIAGRAMS
Nch Open Drain (R3114xxx1A)
V
DD
Vref
-
+
OUT
GND
CMOS (R3114xxx1C)
V
DD
Vref
-
+
OUT
GND
SELECTION GIDE
The package type, the detector threshold, the output type and the taping type of R3114 series can be
designated at uesers’ request by specifying the part number as follows;
R3114xxx1x-xx-x
←Part
Number
↑ ↑ ↑ ↑ ↑
a b c d e
Description
Designation of Package Type;
N
: SOT-23-5
Q
: SC-82AB
K
: DFN(PLP)-1010-4
Setting Detector Threshold (-V
DET
);
Stepwise setting with a step of 0.1V in the range of 0.7V to 5.0V
Designation of Output Type;
A
: Nch Open Drain (Output “L” at V
DD
=-V
DET
)
C
: CMOS (Output “L” at V
DD
=-V
DET
)
Designation of Packing or Taping Type;
TR
prescribed as standard direction
Designation of Composition of PIN solder;
-F
: Lead Free Solder (SOT-23-5, SC-82AB, DFN(PLP)-1010-4)
Code
a
b
c
d
e
2
R3114x
PIN CONFIGURATION
SOT-23-5
5
4
SC-82AB
4
3
DFN(PLP)-1010-4
4
3
(m ark side)
(mark side)
1
2
3
1
2
1
2
PIN DESCRIPTION
SOT-23-5
PIN No.
1
2
3
4
5
Symbol
OUT
V
DD
GND
NC
NC
PIN No.
1
2
3
4
SC-82AB
Symbol
OUT
V
DD
NC
GND
DFN(PLP)-1010-4
PIN No.
1
2
3
4
Symbol
OUT
NC
GND
V
DD
3
R3114x
ABSOLUTE MAXIMUM RATINGS
Item
Supply Voltage
Output Voltage
Output Current
Power Dissipation
(mounted on board)
Operation Temperature Range
Storage Temperature Range
Symbol
V
DD
V
OUT
I
OUT
P
D
*Note1
Rating
7.0
R3114xxx1A
R3114xxx1C
R3114Qxx1A/C
R3114Nxx1A/C
R3114Kxx1A/C
-40 to +85
-55 to +125
20
380
420
400
V
SS
-0.3 to 7.0
V
SS
-0.3 to V
DD
+0.3
Unit
V
V
mA
mW
°C
°C
Topt
Tstg
*Note1: For Power Dissipation, please refer to the following pages
ABSOLUTE MAXIMUM RATINGS
The ABSOLUTE MAXIMUM RATINGS are threshold limit values that must not be exceeded even
for an instant under any condition. Moreover, such values for any two items must not be reached
simultaneously. Operation above these absolute maximum ratings may cause degradation or
permanent damage to the device. These are stress ratings only and do not necessarily imply
functional operation below these limits.
4
R3114x
POWER DISSIPATION
SC-82AB
This specification is mounted on board. Power Dissipation (P
D
) depends on conditions of mounting on board.
This specification is based on the measurements at the condition below:
Measurement Conditions
Standard Land Pattern
Environment
Board Material
Board Dimensions
Copper Ratio
Through-hole
Measurement Result
Standard Land Pattern
Power Dissipation
Thermal Resistance
380mW
Θja=(125-25°C)/0.38W=263°C
/W
Mounting on Board (Wind velocity=0m/s)
Glass cloth epoxy plastic (Double sided)
40mm x 40mm x 1.6mm
Top side : Approx. 50%, Back side Approx. 50%
φ0.5mm
x 44pcs
(Topt=25°C, Tjmax=125°C)
Free Air
150mW
667°C /W
5
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