R3111Q171C-TR-FB [RICOH]
Power Supply Support Circuit, Adjustable, 1 Channel, CMOS, PDSO4, SC-82AB, 4 PIN;
| 型号： | R3111Q171C-TR-FB |
| 厂家： | 
RICOH ELECTRONICS DEVICES DIVISION |
| 描述： | Power Supply Support Circuit, Adjustable, 1 Channel, CMOS, PDSO4, SC-82AB, 4 PIN 光电二极管 |
| 文件： | 总22页 (文件大小：195K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LOW VOLTAGE DETECTOR
NO. EA-056-070403
R3111x SERIES
OUTLINE
The R3111 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, 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.
Three output types, Nch open drain type and CMOS type are available.
The R3111 Series are operable at a lower voltage than that for the RX5VL series, and can be driven by a
single battery.
Six types of packages, TO-92, SOT-89, SOT-23-3, SOT-23-5, SC-82AB, and SON1612-6 are available.
FEATURES
• Ultra-low Supply Current ...................................................... Typ. 0.8µA (VDD=1.5V)
• Wide Range of Operating Voltage........................................ 0.7V to 10.0V (Topt=25°C)
• Detector Threshold............................................................... Stepwise setting with a step of 0.1V in the range
of 0.9V to 6.0V is possible.
• High Accuracy Detector Threshold....................................... ±2.0%
• Low Temperature-Drift Coefficient of Detector Threshold.... Typ. ±100ppm/°C
• Two Output Types ................................................................ Nch Open Drain and CMOS
• Six Types of Packages......................................................... TO-92, SOT-89(Mini-power Mold), SOT-23-3,
SOT-23-5 (Mini-mold), SC-82AB, SON1612-6
APPLICATIONS
• CPU and Logic Circuit Reset
• Battery Checker
• Window Comparator
• Wave Shaping Circuit
• Battery Back-up Circuit
• Power Failure Detector
1
R3111x
BLOCK DIAGRAMS
R3111xxxxA
R3111xxxxC
VDD
VDD
OUT
GND
OUT
GND
Vref
Vref
R3111xxxxB
V
DD
OUT
-
+
Vref
GND
TIMING CHART
R3111XXX1A/C
Release Voltage +VDET
Detector Threshold -VDET
Detector Threshold
Hysteresis
Supply Voltage
(VDD
)
Minimum Operating Voltage
V
SS
Output Voltage
(OUT)
V
SS
t
PLH
2
R3111x
R3111XXX1B
?
A
@
B
Released Voltage (+VDET)
Hysteresis(VHYS)
Detector Threshold (-VDET)
A
Power Supply
Minimum Operating
Voltage (VDDL)
(VDD)
GND
Pull-up Voltage
Output Voltage
(VOUT)
t PLH
GND
DEFINITION OF OUTPUT DELAY TIME
Output Delay Time tPLH/tPHL is defined as follows:
1. In the case of Nch Open Drain Output:(R3111XXXXA/B)
Under the condition of the output pin (OUT) is pulled up through a resistor of 470kΩ to 5V, the time interval
between the rising edge of VDD pulse from 0.7V to (+VDET)+ 2.0V and becoming of the output voltage to 2.5V.
2. In the case of CMOS Output:(R3111XXXXC)
The time interval between the rising edge of VDD pulse from 0.7V to (+VDET)+ 2.0V and becoming of the output
voltage to (VDD/2) V.
+VDET + 2.0V
+VDET + 2.0V
Input Voltage
(VDD)
Input Voltage
(VDD
)
0.7V
GND
0.7V
GND
5.0V
+VDET+2.0V
Output Voltage
Output Voltage
+VDET+2.0V
2.5V
GND
2
GND
t
PHL
tPLH
t
PHL
tPLH
Nch Open Drain Output(R3111XXXXA)
CMOS Output(R3111XXXXC)
3
R3111x
DET
+V
+2.0V
0.7V
Input Voltage
(V )
DD
GND
5.0V
Output
2.5V
GN
HL
tp
tp
LH
Nch Open Drain Output (R3111XXXXB)
SELECTION GUIDE
The package type, the detector threshold, the output type and the taping type of R3111 Series can be
designated at the users’ request by specifying the part number as follows;
R3111xxxxx-xx ←Part Number
↑ ↑ ↑ ↑
↑
a b c d e
Code
Descriptions
Designation of Package Type;
a
E: TO-92
H: SOT-89
Q: SC-82AB
N: SOT-23-5 / SOT-23-3
D: SON1612-6
Setting Detector Threshold (−VDET);
Stepwise setting with a step of 0.1V in the range of 0.9V to 6.0V is possible.
b
c
Designation of Package Type
1: except SOT-23-3
2: SOT-23-3
Designation of Output Type;
A: Nch Open Drain(Output "L" at VDD=-Vdet)
B: Nch Open Drain(Output "H" at VDD=-Vdet)
C: CMOS (Output "L" at VDD=-Vdet)
d
e
Designation of Packing or Taping Type;
Ex.TO-92: TZ, SOT-89: T1, SOT-23-3, SOT-23-5, SC-82AB, SON1612-6: TR
prescribed as standard directions.
(Refer to Taping Specifications.) Antistatic bag for samples: C
4
R3111x
PIN CONFIGURATION
zꢀTO-92
zꢀSOT-89
zꢀSOT-23-3
zꢀSOT-23-5
zꢀSC-82AB
zꢀSON1612-6
6 5 4
5
4
4
3
3
(mark side)
(mark side)
(mark side)
(mark side)
1 2 3
1
2
(mark side)
1
2
3
1
2
1
2
3
1
2
3
PIN DESCRIPTION
zꢀTO-92
zꢀSOT-89
Pin No. Symbol
z SOT-23-3
z SOT-23-5
Pin No. Symbol
zꢀSC-82AB
Pin No. Symbol
Pin No. Symbol
Pin No. Symbol
1
2
3
VDD
1
2
3
OUT
VDD
1
2
3
OUT
GND
VDD
1
2
3
4
5
OUT
VDD
1
2
3
4
OUT
VDD
GND
OUT
GND
GND
NC
NC
GND
NC
zꢀSON1612-6
Pin No. Symbol
1
2
3
4
5
6
OUT
VDD
GND
NC
VDD
NC
5
R3111x
ABSOLUTE MAXIMUM RATINGS
Symbol
Item
Rating
Unit
V
VDD
Supply Voltage
12
VSS−0.3 to VDD+0.3
VSS−0.3 to 12
70
VOUT1
VOUT2
IOUT
Output Voltage (CMOS)
Output Voltage (Nch)
V
V
Output Current
mA
mW
mW
mW
°C
Power Dissipation 1 Note1
Power Dissipation 2 Note2
Power Dissipation 3 Note3
Operating Temperature Range
Storage Temperature Range
Lead temperature (Soldering)
PD
300
PD
150
PD
500
Topt
Tstg
Tsolder
−40 to 85
−55 to 125
°C
260°C, 10s
Note 1: applied to SOT-89 and TO-92 Single suspended in the air
Note 2: applied to SOT-23-3, SOT-23-5 and SC-82AB Single suspended in the air
Note 3: applied to SON1612-6 at mounted on board
PD depends on conditions of mounting on board. This specification is based on the measurement at
the condition below:
Measurement Conditions
Environment: Mounted on board (Wind velocity 0m/s)
Board Material: FR-4 (2-layer)
Board dimensions : 40mm x 40mm x t1.6mm
Copper Area: 50%
ELECTRICAL CHARACTERISTICS
R3111x09xA/C
Topt=25°C
Symbol
Item
Conditions
Min.
Typ.
Max.
Unit
V
Detector Threshold
0.882 0.900 0.918
0.027 0.045 0.063
−VDET
VHYS
Detector Threshold Hysteresis
V
0.8
0.9
2.4
2.7
VDD= 0.80V
ISS
Supply Current
µA
2.90V
VDDH
Maximum Operating Voltage
10
V
0.55
0.65
0.70
0.80
Topt=25°C
Minimum Operating Voltage Note1
VDDL
IOUT
V
<
<
−40°C Topt 85°C
=
=
Nch
VDS=0.05V, VDD=0.70V
Output Current (Driver Output Pin) VDS=0.50V, VDD=0.85V
0.01
0.05
0.05
0.50
mA
Pch
mA
µs
1.0
2.0
VDS=−2.1V,VDD=4.5V
Output Delay Time Note2
tPLH
100
Detector Threshold Temperature
Coefficient
<
<
∆−VDET/∆T
−40°C Topt 85°C
±100
ppm/°C
=
=
6
R3111x
R3111x18xA/C
Symbol
Topt=25°C
Item
Conditions
Min.
Typ.
Max.
U=nit
Detector Threshold
1.764 1.800 1.836
0.054 0.090 0.126
V
V
−VDET
VHYS
Detector Threshold Hysteresis
0.8
1.0
2.4
3.0
VDD= 1.70V
ISS
Supply Current
µA
3.80V
VDDH
Maximum Operating Voltage
10
V
0.55
0.65
0.70
0.80
Topt=25°C
Minimum Operating Voltage Note1
VDDL
IOUT
V
<
<
−40°C Topt 85°C
=
=
Nch
VDS=0.05V, VDD=0.70V
Output Current (Driver Output Pin) VDS=0.50V, VDD=0.85V
0.01
1.00
0.05
2.00
mA
Pch
mA
µs
1.0
2.0
VDS=−2.1V, VDD=4.5V
Output Delay Time Note2
tPLH
100
Detector Threshold Temperature
Coefficient
<
<
∆−VDET/∆T
−40°C Topt 85°C
±100
ppm/°C
=
=
R3111x27xA/C
Symbol
Topt=25°C
Item
Conditions
Min.
Typ.
Max.
Unit
V
Detector Threshold
2.646 2.700 2.754
0.081 0.135 0.189
−VDET
VHYS
Detector Threshold Hysteresis
V
0.9
1.1
2.7
3.3
VDD= 2.60V
ISS
Supply Current
µA
4.70V
VDDH
Maximum Operating Voltage
10
V
0.55
0.65
0.70
0.80
Topt=25°C
Minimum Operating Voltage Note1
VDDL
IOUT
V
<
<
−40°C Topt 85°C
=
=
Nch
VDS=0.05V, VDD=0.70V
VDS=0.50V,VDD=1.50V
0.01
1.00
0.05
2.00
mA
Output Current (Driver Output Pin)
Output Delay Time Note2
Pch
mA
µs
1.0
2.0
VDS=−2.1V, VDD=4.5V
tPLH
100
Detector Threshold Temperature
Coefficient
<
<
∆−VDET/∆T
−40°C Topt 85°C
±100
ppm/°C
=
=
7
R3111x
R3111x36xA/C
Symbol
Topt=25°C
Item
Conditions
Min.
Typ.
Max.
Unit
V
Detector Threshold
3.528 3.600 3.672
0.108 0.180 0.252
−VDET
VHYS
Detector Threshold Hysteresis
Supply Current
V
1.0
1.2
3.0
3.6
VDD= 3.47V
ISS
µA
5.60V
VDDH
Maximum Operating Voltage
10
V
0.55
0.65
0.70
0.80
Topt=25°C
Minimum Operating Voltage Note1
VDDL
IOUT
V
<
<
−40°C Topt 85°C
=
=
Nch
0.01
1.00
0.05
2.00
VDS=0.05V, VDD=0.70V
VDS=0.50V, VDD=1.50V
mA
Output Current (Driver Output Pin)
Output Delay Time Note2
Pch
mA
µs
1.0
2.0
VDS=−2.1V, VDD=4.5V
tPLH
100
Detector Threshold Temperature
Coefficient
<
<
∆−VDET/∆T
−40°C Topt 85°C
±100
ppm/°C
=
=
R3111x45xA/C
Symbol
Topt=25°C
Item
Conditions
Min.
Typ.
Max.
Unit
V
Detector Threshold
4.410 4.500 4.590
0.135 0.225 0.315
−VDET
VHYS
Detector Threshold Hysteresis
V
1.1
1.3
3.3
3.9
VDD= 4.34V
ISS
Supply Current
µA
6.50V
VDDH
Maximum Operating Voltage
10
V
0.55
0.65
0.70
0.80
Topt=25°C
Minimum Operating Voltage Note1
VDDL
IOUT
V
<
<
−40°C Topt 85°C
=
=
Nch
VDS=0.05V, VDD=0.70V
Output Current (Driver Output Pin) VDS=0.50V, VDD=1.50V
0.01
1.00
0.05
2.00
mA
Pch
mA
µs
1.5
3.0
VDS=−2.1V, VDD=8.0V
Output Delay Time Note2
tPLH
100
Detector Threshold Temperature
Coefficient
<
<
∆−VDET/∆T
−40°C Topt 85°C
±100
ppm/°C
=
=
8
R3111x
R3111x54xA/C
Symbol
Topt=25°C
Item
Conditions
Min.
Typ.
Max.
Unit
V
Detector Threshold
5.292 5.400 5.508
0.162 0.270 0.378
−VDET
VHYS
Detector Threshold Hysteresis
V
1.2
1.4
3.6
4.2
VDD= 5.20V
ISS
Supply Current
µA
7.40V
VDDH
Maximum Operating Voltage
10
V
0.55
0.65
0.70
0.80
Topt=25°C
Minimum Operating Voltage Note1
VDDL
IOUT
V
<
<
−40°C Topt 85°C
=
=
Nch
VDS=0.05V, VDD=0.70V
VDS=0.50V, VDD=1.50V
0.01
1.00
0.05
2.00
mA
Output Current
(Driver Output Pin)
Pch
mA
µs
1.5
3.0
VDS=−2.1V, VDD=8.0V
Output Delay Time Note2
tPLH
100
Detector Threshold Temperature
Coefficient
<
<
∆−VDET/∆T
−40°C Topt 85°C
±100
ppm/°C
=
=
Note1:Minimum operating voltage means the value of input voltage when output voltage maintains 0.1V or less. (In
the case of Nch Open Drain Output type, the output pin is pulled up with a resistance of 470k to 5.0V.)
Ω
Note2:In the case of CMOS Output type: The time interval between the rising edge of VDD input pulse from 0.7V
to (+VDET)+2.0V and output voltage level becoming to VDD/2.
In the case of Nch Open Drain Output type: the output pin is pulled up with a resistance of 470kΩ to
5.0V, The time interval between the rising edge of VDD input pulse from 0.7V to (+VDET)+2.0V and output
voltage level becoming to 2.5V.
R3111Q231B
Topt=25°C
Symbol
Item
Conditions
Min.
Typ.
Max.
Unit
V
Detector Threshold
2.254 2.300 2.346
0.069 0.115 0.161
−VDET
VHYS
Detector Threshold Hysteresis
V
0.9
1.1
2.7
3.3
VDD=2.20V
ISS
Supply Current
µA
4.30V
VDDH
Maximum Operating Voltage
10
V
0.55
0.65
0.70
0.80
Topt=25°C
Minimum Operating Voltage Note1
VDDL
V
<
<
−40°C Topt 85°C
=
=
Nch
VDS=0.50V,VDD=3.00V
IOUT
PLH
Output Current (Driver Output Pin)
Output Delay Time Note2
10
mA
µs
100
Detector Threshold Temperature
Coefficient
<
<
∆−VDET/∆T
−40°C Topt 85°C
±100
ppm/°C
=
=
9
R3111x
R3111Q441B
Symbol
Topt=25°C
Item
Conditions
Min.
Typ.
Max.
Unit
V
Detector Threshold
4.312 4.400 4.488
0.132 0.220 0.308
−VDET
VHYS
Detector Threshold Hysteresis
V
1.1
1.3
3.3
3.9
VDD= 4.24V
ISS
Supply Current
µA
6.40V
VDDH
Maximum Operating Voltage
10
V
0.55
0.65
0.70
0.80
Topt=25°C
Minimum Operating Voltage Note1
VDDL
V
<
<
−40°C Topt 85°C
=
=
Nch
VDS=0.50V, VDD=5.50V
IOUT
tPLH
Output Current (Driver Output Pin)
Output Delay Time Note2
18
mA
µs
100
Detector Threshold Temperature
Coefficient
<
<
∆−VDET/∆T
−40°C Topt 85°C
±100
ppm/°C
=
=
Note1:Minimum operating voltage means the value of input voltage when output voltage maintains 0.1V or less. (In
the case of Nch Open Drain Output type, the output pin is pulled up with a resistance of 470k to 5.0V.)
Ω
Note2:In the case of CMOS Output type: The time interval between the rising edge of VDD input pulse from 0.7V
to (+VDET)+2.0V and output voltage level becoming to VDD/2.
In the case of Nch Open Drain Output type: the output pin is pulled up with a resistance of 470kΩ to
5.0V, The time interval between the rising edge of VDD input pulse from 0.7V to (+VDET)+2.0V and output
voltage level becoming to 2.5V.
OPERATION
V
DD
Ra
Pch
Nch
OUT
GND
Comparator
Rb
Rc
Vref
Figure 1. Block Diagram (R3111XXXXC)
10
R3111x
1
2
3
4
5
Step
1
2
3
4
5
Comparator
Pin Input Voltage
B
I
II
III
IV
L
V
Released Voltage(+VDET
Supply Voltage Detector Threshold(-VDET
(VDD
)
Detector Threshold
Hysteresis
)
Comparator
Output
)
A
H
L
Inde-finite
H
Minimum Operating Voltage
GND
Tr.1
OFF ON Inde-finite ON OFF
Pch ON OFF Inde-finite OFF ON
Nch OFF ON Inde-finite ON OFF
Output
Tr.
Output Voltage
(VOUT
)
Rb + Rc
× VDD
I.
Ra + Rb + Rc
GND
Rb
Ra + Rb
II.
× VDD
t
PLH
Figure 2. Operation Diagram
Step 1. The output voltage is equal to the supply voltage (VDD).
>
Step 2. At Point “A”, Vref VDD×(Rb+Rc)/(Ra+Rb+Rc) is true, as a result, the output of comparator is reverse,
=
and output voltage becomes to GND level. The voltage level of Point A means detector threshold voltage,
or (−VDET).
Step 3. When the supply voltage is less than minimum operating voltage, the operation of output transistor
becomes indefinite, and in the case that output is pulled up to VDD, the output voltage equals to VDD
voltage.
Step 4. The output voltage equals to GND level.
>
Step 5. At Point “B”, Vref VDD×Rb/(Ra+Rb) is true, Output of the comparator is reverse, and output voltage is
=
equal to the supply voltage, or (VDD). The voltage level of Point B means released voltage, or (+VDET).
The difference between released voltage and detector threshold voltage is the detector threshold hysteresis.
VDD
OUT pin should be pulled up
to VDD or another voltage
source.
Ra
-
OUT
+
Comparator
Rb
Rc
Vref
Nch
GND
Figure 3. Block Diagram (R3111XXXXB)
11
R3111x
Step
1
2
3
?
A
@
Comparator
Pin Input Voltage
B
I
II
III
Released Voltage (+VDET)
Detector Threshold (-VDET)
Supply
Hysteresis Range (VHYS)
Comparator
Output
Voltage
A
H
L
H
Minimum Operating
Voltage (VDDL)
(VDD)
Tr.1
OFF ON
OFF
GND
Output
Nch ON OFF
ON
Tr.
Pull-up Voltage
Rb + Rc
Ra + Rb + Rc
Output Voltage
(VOUT)
I.
II.
× VDD
× VDD
t PLH
Rb
Ra + Rb
GND
Figure 4. Operation Diagram
Step 1. The output voltage is equal to the supply voltage (VDD).
>
Step 2. At Point “A”, Vref VDD×(Rb+Rc)/(Ra+Rb+Rc) is true, as a result, the output of comparator is reverse,
=
and output voltage becomes to Pull-up level. The voltage level of Point A means detector threshold
voltage, or (−VDET).
>
Step 3. At Point “B”, Vref VDD×Rb/(Ra+Rb) is true, Output of the comparator is reverse, and output voltage is
=
equal to the GND after tpHL. The voltage level of Point B means released voltage, or (+VDET).
The difference between released voltage and detector threshold voltage is the detector threshold hysteresis.
TEST CIRCUITS
I
SS
5.0V
470k
V
DD
VDD
R3111
Series
X
V
OUT
V
IN
R3111
Series
X
V
IN
OUT
OUT
GND
GND
Pull-up circuit is not necessary for
CMOS Output type, or R3111xxxxC.
Supply Current Test Circuit
Detector Threshold Test Circuit
V
DS
V
DD
V
DD
I
OUT
I
OUT
R3111
Series
X
R3111
Series
X
VIN
V
IN
OUT
OUT
V
DD-
V
DS
V
DS
GND
GND
Apply to CMOS Output type only
12
R3111x
Nch Driver Output Current Test Circuit
Pch Driver Output Current Test Circuit
+5.0V
+5.0V
OUT
R
100k
IN
+VDET+2.0V
+VDET+2.0V
0.7V
VDD
ROUT
470k
R
470k
OUT
0.7V
VSS
R3111XXXXA
Series
R3111XXXX
Series
DD
A
V
SS
OUT
P.G.
P. G .
V
OUT
OUT
CIN
GND
GND
COUT
VSS
V
SS
Output Delay Time Test Circuit (1)
Output Delay Time Test Circuit (2)
TYPICAL CHARACTERISTICS
1) Supply Current vs. Input Voltage
R3111x09xC
R3111x27xC
2.5
2.0
1.5
1.0
Topt=85°C
Topt=85°C
2.0
1.5
25°C
25°C
1.0
-40°C
-40°C
0.5
0.0
0.5
0.0
0
2
4
6
8
10
0
2
4
6
8
10
Input Voltage VIN(V)
Input Voltage VIN(V)
13
R3111x
R3111x45xC
2.0
Topt=85°C
25°C
1.5
1.0
0.5
0.0
-40°C
0
2
4
6
8
10
Input Voltage VIN(V)
2) Detector Threshold Hysteresis vs. Temperature
R3111x09xC
R3111x27xC
1.00
2.9
2.8
2.7
0.98
0.96
+VDET
-VDET
0.94
+VDET
0.92
0.90
-VDET
0.88
2.6
2.5
0.86
0.84
-60 -40 -20
0
20 40 60 80 100
-60 -40 -20
0
20 40 60 80 100
Temperature Topt(°C)
Temperature Topt(°C)
R3111x45xC
4.8
4.7
4.6
+VDET
-VDET
4.5
4.4
-60 -40 -20
0
20 40 60 80 100
Temperature Topt(°C)
14
R3111x
3) Output Voltage vs. Input Voltage
R3111x09xC
R3111x09xA
5V Pull-up 470kΩ
1.6
1.4
1.2
1.0
6
5
4
3
2
Topt=-40°C
25°C
0.8
85°C
0.6
25°C
0.4
85°C
Topt=-40°C
1
0
0.2
0.0
0
0.2 0.4 0.6 0.8
1
1.2 1.4 1.6
0
0.2 0.4 0.6 0.8
1
1.2 1.4 1.6
Input Voltage VIN(V)
Input Voltage VIN(V)
R3111x27xC
R3111x27xA
5V Pull-up 470kΩ
4.0
6
3.5
3.0
2.5
2.0
1.5
1.0
5
4
3
2
Topt=-40°C
25°C
85°C
85°C
25°C
Topt=-40°C
1.5
Input Voltage VIN(V)
1
0
0.5
0.0
0
0.5
1
2
2.5
3
3.5
4
0
0.5
1
1.5
2
2.5
3
3.5
4
Input Voltage VIN(V)
R3111x45xC
R3111x45xA
5V Pull-up 470kΩ
6
5
4
3
2
1
6
5
4
3
2
Topt=-40°C
25°C
85°C
85°C
25°C
1
0
Topt=-40°C
0
0
1
2
3
4
5
6
0
1
2
3
4
5
6
Input Voltage VIN(V)
Input Voltage VIN(V)
15
R3111x
4) Nch Driver Output Current vs. VDS
R3111x09xC
R3111x09xC
Topt=25°C
Topt=25°C
700
600
300
250
200
150
100
V
DD=0.85V
V
DD=0.8V
500
400
300
200
0.7V
0.7V
50
0
100
0
0
0.2
0.4
DS(V)
0.6
0.8
0
0.02
0.04
0.06
0.08
0.1
V
VDS(V)
R3111x27xC
R3111x27xC
Topt=25°C
Topt=25°C
20
18
16
14
300
250
200
150
100
VDD=2.5V
V
DD=0.8V
12
10
8
2.0V
0.7V
6
1.5V
4
50
0
2
0
0
0.5
1
1.5
DS(V)
2
2.5
0
0.02
0.04
0.06
0.08
0.1
V
VDS(V)
R3111x45xC
R3111x45xC
Topt=25°C
Topt=25°C
60
50
40
30
300
250
200
150
100
VDD=4.5V
4.0V
V
DD=0.8V
3.5V
3.0V
0.7V
20
10
0
2.5V
2.0V
50
0
1.5V
1.5
0
0.5
1
2
2.5
3
3.5
4
4.5
0
0.02
0.04
0.06
0.08
0.1
VDS(V)
VDS(V)
16
R3111x
5) Nch Driver Output Current vs. Input Voltage
R3111x09xC
R3111x27xC
900
800
700
600
14
12
10
Topt=-40°C
25°C
85°C
8
6
4
2
0
500
Topt=-85°C
400
300
25°C
200
100
-40°C
0
0
0.2
0.4
0.6
0.8
1
0
0.5
1
1.5
1
2.5
3
Input Voltage VIN(V)
Input Voltage VIN(V)
R3111x45xC
25
20
15
10
5
Topt=-40°C
25°C
85°C
0
0
1
2
3
4
5
6
Input Voltage VIN(V)
6)
Pch Driver Output Current vs. Input Voltage
R3111x09xC
R3111x27xC
Topt=25°C
Topt=25°C
1.4
3.5
3.0
2.5
2.0
1.5
1.0
1.2
1.0
0.8
0.6
0.4
V
DS=0.7V
V
DS=2.1V
1.5V
1.0V
0.5V
0.5V
0.2
0.0
0.5
0.0
0
2
4
6
8
0
1
2
3
4
5
6
7
Input Voltage VIN(V)
Input Voltage VIN(V)
17
R3111x
R3111x45xC
Topt=25°C
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
VDS=2.1V
1.5V
1.0V
0.5V
0.5
0.0
0
2
4
6
8
10
Input Voltage VIN(V)
7) Output Delay Time vs. Load Capacitance
R3111x09xA
R3111x27xA
100
100
10
1
10
tPLH
tPLH
1
0.1
0.1
tPHL
0.01
tPHL
0.01
0.001
0.001
0.0001
0.001
0.01
0.1
0.0001
0.001
0.01
0.1
Load Capacitance COUT(µF)
Load Capacitance COUT(µF)
R3111x45xA
100
10
1
t
t
PLH
PHL
0.1
0.01
0.001
0.0001
0.001
0.01
0.1
Load Capacitance COUT(µF)
18
R3111x
8) Output Delay Time vs. Input Pin Capacitance
R3111x09xA
R3111x27xA
100
100
10
1
10
t
t
PHL
PLH
1
t
t
PLH
PHL
0.1
0.1
0.01
0.01
0.001
0.001
0.0001
0.001
0.01
0.1
0.0001
0.001
0.01
0.1
Input Pin Capacitance CIN(µF)
Input Load Capacitance CIN(µF)
R3111x45xA
100
10
1
t
t
PLH
PHL
0.1
0.01
0.001
0.001
0.01
0.1
1
Input Pin Capacitance CIN(µF)
TYPICAL APPLICATIONS
R3111xxxxA CPU Reset Circuit (Nch Open Drain Output)
Case 1.Input Voltage to R3111xxxxA is equal to
Input Voltage to CPU
Case 2.Input Voltage to R3111xxxxA is unequal to
Input Voltage to CPU
V
DD1
V
DD
VDD2
V
DD
V
DD
V
DD
470k
A
R
470k
VDD
R
CPU
CPU
RESET
GND
R3111XXXX
SERIES
R3111XXXX
SERIES
A
RESET
GND
OUT
OUT
GND
GND
19
R3111x
R3111xxxxA CPU Reset Circuit CMOS Output
VDD
VDD
VDD
CPU
RESET
GND
R3111XXXX
SERIES
C
OUT
GND
R3111xxxxA Output Delay Time Circuit 1
(Nch Open Drain Output)
R3111xxxxA Output Delay Time Circuit 2
(Nch Open Drain Output)
VDD
VDD
V
DD
VDD
CPU
RESET
GND
470k
R1
R2
470k
V
DD
R
100k
CPU
R3111XXXX
SERIES
A
R3111XXXX
SERIES
A
RESET
GND
OUT
V
DD
OUT
GND
GND
Memory Back-up Circuit
VDD
V
CC
D1
VCC
VCC
VCC
VCC
D2
Y1
Y2
Y3
Y4
A
B
G
RAM1
RAM2
RAM3
RAM4
GND CS GND CS GND CS GND CS
GND
VDD
OUT
C
R3111XXX
X
SERIES
GND
Voltage level Indicator Circuit (lighted when the power runs out)
(Nch Open Drain Output)
VDD
V
DD
R3111XXXX
A
SERIES
OUT
GND
20
R3111x
Detector Threshold Adjustable Circuit
(Nch Open Drain Output)
Adjusted Detector Threshold
=(−VDET) (Ra+Rb)/Rb
VDD
Ra
Rb
Hysteresis Voltage
=(VHYS) (Ra+Rb)/Rb
V
DD
OUT
R3111XXXX
SERIES
A
+
GND
C
) If the value of Ra is set excessively large, voltage
drop may occur caused by the supply current of IC
itself, and detector threshold may vary.
Window Comparator Circuit
(Nch Open Drain Output)
V
DD
VDET1
VDET2
V
DD
SS
V
DD
OUT
A
R3111XXXX
SERIES
OUT
V
DD
VDET2
V
OUT
A
GND
R3111XXXX
SERIES
V
DET
1
OUT
GND
VSS
Over-charge Preventing Circuit
D1
R1
Light
R2
V
DD
R4
R3111XXXX
C
SERIES
OUT
R3
GND
21
R3111x
TECHNICAL NOTES
V
DD
DD
V
V
DD
DD
R1
R
V
R2
OUT
R3111
SERIES
OUT
R3111
SERIES
GND
GND
Figure 9
Figure 10
1. In Figure 9, When R3111xxxxC is used, and if an impedance is connected between Voltage Supplier
and the VDD Pin of R3111xxxxC Series, the operation might be unstable by cross conduction current at
detection.
When R3111xxxxA/B is used in Figure 9, if the value of R is set excessively large, voltage drop may
occur caused by supply current of IC itself and Detector threshold may vary.
2. Wiring as shown in Figure 10 may cause the oscillation in both output types of R3111 Series.
22
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