NO. EA-058-0006
/2:#92/7$*(#'(7(&725
56444[[[4$2HULHV
$33/,&$7,21#0$18$/
LOW VOLTAGE DETECTOR
56444[[[4$2(5,(6
1
OUTLINE
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FEATURES
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&
7ZR#2XWSXW#7\SHV 111111111111111111111111111111111111111111111111111111111FK#2SHQ#'UDLQ#DQG#&026
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APPLICATIONS
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R3111xxx1A/C
2
BLOCK DIAGRAMS
R3111XXX1A
R3111XXX1C
V
DD
OUT
GND
Vref
V
DD
OUT
GND
Vref
TIMING CHART
t
PLH
Supply Voltage
Output Voltage
(OUT)
Minimum Operating Voltage
V
SS
V
SS
Detector Threshold
Hysteresis
(V
DD
)
Release Voltage +V
DET
Detector Threshold -V
DET
R3111xxx1A/C
3
DEFINITION OF OUTPUT DELAY TIME
2XWSXW#'HOD\#7LPH#W
3/+
#LV#GHILQHG#DV#IROORZV=
41 ,Q#WKH#FDVH#RI#1FK#2SHQ#'UDLQ#2XWSXW=
8QGHU#WKH#FRQGLWLRQ#RI#WKH#RXWSXW#SLQ#+287,#LV#SXOOHG#XS#WKURXJK#D#UHVLVWRU#RI#7:3N
#WR#89/#WKH#WLPH#LQWHUYDO#EH0
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''
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'(7
,.#5139#DQG#EHFRPLQJ#RI#WKH#RXWSXW#YROWDJH#WR#51891
51 ,Q#WKH#FDVH#RI#&026#2XWSXW=
7KH#WLPH#LQWHUYDO#EHWZHHQ#WKH#ULVLQJ#HGJH#RI#9
''
#
SXOVH#IURP#31:9#WR#+.9
'(7
,.#5139#DQG#EHFRPLQJ#RI#WKH#RXWSXW
YROWDJH#WR#+9
''
2
5,#91
+V
DET
+ 2.0V
5.0V
2.5V
0.7V
Input Voltage
(V
DD
)
Output Voltage
GND
GND
t
PHL
t
PLH
+V
DET
+ 2.0V
+V
DET
+2.0V
+V
DET
+2.0V
0.7V
Input Voltage
(V
DD
)
Output Voltage
GND
2
GND
t
PHL
t
PLH
Nch Open Drain Output
CMOS Output
R3111xxx1A/C
4
SELECTION GUIDE
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WKH#XVHUV#UHTXHVW#E\#VSHFLI\LQJ#WKH#SDUW#QXPEHU#DV#IROORZV>
R3111
1
-
Part Number
a b c d
Code
Contents
D
'HVLJQDWLRQ#RI#3DFNDJH#7\SH>
(=#720<5
4=#6&0;5$%
+=#6270;<
1=#62705608
E
6HWWLQJ#'HWHFWRU#7KUHVKROG#+09
'(7
,>
6WHSZLVH#VHWWLQJ#ZLWK#D#VWHS#RI#3149#LQ#WKH#UDQJH#RI#31<9#WR#9139#LV#SRVVLEOH1
F
'HVLJQDWLRQ#RI#2XWSXW#7\SH>
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+5HIHU#WR#7DSLQJ#6SHFLILFDWLRQV1,#$QWLVWDWLF#EDJ#IRU#VDPSOHV=#&
R3111xxx1A/C
5
PIN CONFIGURATION
TO-92
SOT-89
SOT-23-5
SC-82AB
1
2
3
(mark side)
1
2
3
(mark side)
1
2
3
5
4
(mark side)
4
3
1
2
(mark side)
PIN DESCRIPTION
TO-92
SOT-89
SOT-23-5
SC-2AB
Pin No.
Symbol
Pin No.
Symbol
Pin No.
Symbol
Pin No.
Symbol
4
9
''
4
287
4
287
4
287
5
*1'
5
9
''
5
9
''
5
9
''
6
287
6
*1'
6
*1'
6
1&
7
1&
7
*1'
8
1&
R3111xxx1A/C
6
ABSOLUTE MAXIMUM RATINGS
Symbol
Item
Rating
Unit
9
''
6XSSO\#9ROWDJH
45
9
9
2874
2XWSXW#9ROWDJH#+&026,
9
66
0316#WR#9
''
.316
9
9
2875
2XWSXW#9ROWDJH#+1FK,
9
66
0316#WR#45
9
,
287
2XWSXW#&XUUHQW
:3
P$
3
'
3RZHU#'LVVLSDWLRQ#4-
1RWH4
633
P:
3
'
3RZHU#'LVVLSDWLRQ#5-
1RWH5
483
P:
7RSW
2SHUDWLQJ#7HPSHUDWXUH
5DQJH
073#WR#;8
&
7VWJ
6WRUDJH#7HPSHUDWXUH
5DQJH
088#WR#458
&
7VROGHU
/HDG#WHPSHUDWXUH#+6RO0
GHULQJ,
593
&/#43V
-1RWH#4=#DSSOLHG#WR#6270;<#DQG#720<5
-1RWH#5=#DSSOLHG#WR#62705608#DQG#6&0;5$%
R3111xxx1A/C
7
ELECTRICAL CHARACTERISTICS
R3111x091A/C
7RSW 58
&
Symbol
Item
Conditions
MIN.
TYP.
MAX.
Unit
09
'(7
'HWHFWRU#7KUHVKROG
31;;5
31<33
31<4;
9
9
+<6
'HWHFWRU#7KUHVKROG#+\VWHUHVLV
3135:
31378
31396
9
,
66
6XSSO\#&XUUHQW
9
''
31;39
51<39
31;
31<
517
51:
--$
9
''+
0D[LPXP#2SHUDWLQJ#9ROWDJH
43
9
7RSW 58
&
3188
31:3
9
''/
0LQLPXP#2SHUDWLQJ#9ROWDJH-
1RWH4
073
&
7RSW
;8
&
3198
31;3
9
1FK
9
'6
31389/9
''
31:39
9
'6
31839/9
''
31;89
3134
3138
3138
3183
P$
,
287
2XWSXW#&XUUHQW
+'ULYHU#2XWSXW#3LQ,
3FK
9
'6
05149/9
''
7189
413
513
P$
W
3/+
2XWSXW#'HOD\#7LPH-
1RWH5
433
--V
09
'(7
2
7
'HWHFWRU#7KUHVKROG#7HPSHUDWXUH
&RHIILFLHQW
073
&
7RSW
;8
&
433
SSP2
&
R3111xxx1A/C
8
R3111x181A/C
7RSW 58
&
Symbol
Item
Conditions
MIN.
TYP.
MAX.
Unit
09
'(7
'HWHFWRU#7KUHVKROG
41:97
41;33
41;69
9
9
+<6
'HWHFWRU#7KUHVKROG#+\VWHUHVLV
31387
313<3
31459
9
,
66
6XSSO\#&XUUHQW
9
''
41:39
61;39
31;
413
517
613
--$
9
''+
0D[LPXP#2SHUDWLQJ#9ROWDJH
43
9
7RSW 58
&
3188
31:3
9
''/
0LQLPXP#2SHUDWLQJ#9ROWDJH-
1RWH4
073
&
7RSW
;8
&
3198
31;3
9
1FK
9
'6
31389/#9
''
31:39
9
'6
31839/#9
''
31;89
3134
4133
3138
5133
P$
,
287
2XWSXW#&XUUHQW
+'ULYHU#2XWSXW#3LQ,
3FK
9
'6
05149/9
''
7189
413
513
P$
W
3/+
2XWSXW#'HOD\#7LPH-
1RWH5
433
--V
09
'(7
2
7
'HWHFWRU#7KUHVKROG#7HPSHUDWXUH
&RHIILFLHQW
073
&
7RSW
;8
&
433
SSP2
&
R3111x271A/C
7RSW 58
&
Symbol
Item
Conditions
MIN.
TYP.
MAX.
Unit
09
'(7
'HWHFWRU#7KUHVKROG
51979
51:33
51:87
9
9
+<6
'HWHFWRU#7KUHVKROG#+\VWHUHVLV
313;4
31468
314;<
9
,
66
6XSSO\#&XUUHQW
9
''
51939
71:39
31<
414
51:
616
$
9
''+
0D[LPXP#2SHUDWLQJ#9ROWDJH
43
9
7RSW 58
&
3188
31:3
9
''/
0LQLPXP#2SHUDWLQJ#9ROWDJH-
1RWH4
073
&
7RSW
;8
&
3198
31;3
9
1FK
9
'6
31389/9
''
31:39
9
'6
31839/9
''
41839
3134
4133
3138
5133
P$
,
287
2XWSXW#&XUUHQW
+'ULYHU#2XWSXW#3LQ,
3FK
9
'6
05149/9
''
7189
413
513
P$
W
3/+
2XWSXW#'HOD\#7LPH-
1RWH5
433
--V
09
'(7
2
7
'HWHFWRU#7KUHVKROG#7HPSHUDWXUH
&RHIILFLHQW
073
&
7RSW
;8
&
433
SSP2
&
R3111xxx1A/C
9
R3111x361A/C
7RSW 58
&
Symbol
Item
Conditions
MIN.
TYP.
MAX.
Unit
09
'(7
'HWHFWRU#7KUHVKROG
6185;
61933
619:5
9
9
+<6
'HWHFWRU#7KUHVKROG#+\VWHUHVLV
3143;
314;3
31585
9
,
66
6XSSO\#&XUUHQW
9
''
617:9
81939
413
415
613
619
--$
9
''+
0D[LPXP#2SHUDWLQJ#9ROWDJH
43
9
7RSW 58
&
3188
31:3
9
''/
0LQLPXP#2SHUDWLQJ#9ROWDJH-
1RWH4
073
&
7RSW
;8
&
3198
31;3
9
1FK
9
'6
31389/9
''
31:39
9
'6
31839/9
''
41839
3134
4133
3138
5133
P$
,
287
2XWSXW#&XUUHQW
+'ULYHU#2XWSXW#3LQ,
3FK
9
'6
05149/9
''
7189
413
513
P$
W
3/+
2XWSXW#'HOD\#7LPH-
1RWH5
433
--V
09
'(7
2
7
'HWHFWRU#7KUHVKROG#7HPSHUDWXUH
&RHIILFLHQW
073
&
7RSW
;8
&
433
SSP2
&
R3111xxx1A/C
10
R3111x451A/C
7RSW 58
&
Symbol
Item
Conditions
MIN.
TYP.
MAX.
Unit
09
'(7
'HWHFWRU#7KUHVKROG
71743
71833
718<3
9
9
+<6
'HWHFWRU#7KUHVKROG#+\VWHUHVLV
31468
31558
31648
9
,
66
6XSSO\#&XUUHQW
9
''
71679
91839
414
416
616
61<
--$
9
''+
0D[LPXP#2SHUDWLQJ#9ROWDJH
43
9
7RSW 58
&
3188
31:3
9
''/
0LQLPXP#2SHUDWLQJ#9ROWDJH-
1RWH4
073
&
7RSW
;8
&
3198
31;3
9
1FK
9
'6
31389/#9
''
31:39
9
'6
31839/#9
''
41839
3134
4133
3138
5133
P$
,
287
2XWSXW#&XUUHQW
+'ULYHU#2XWSXW#3LQ,
3FK
9
'6
05149/9
''
;139
418
613
P$
W
3/+
2XWSXW#'HOD\#7LPH-
1RWH5
433
--V
09
'(7
2
7
'HWHFWRU#7KUHVKROG#7HPSHUDWXUH
&RHIILFLHQW
073
&
7RSW
;8
&
433
SSP2
&
R3111xxx1A/C
11
R3111x541A/C
7RSW 58
&
Symbol
Item
Conditions
MIN.
TYP.
MAX.
Unit
09
'(7
'HWHFWRU#7KUHVKROG
815<5
81733
8183;
9
9
+<6
'HWHFWRU#7KUHVKROG#+\VWHUHVLV
31495
315:3
316:;
9
,
66
6XSSO\#&XUUHQW
9
''
81539
:1739
415
417
619
715
--$
9
''+
0D[LPXP#2SHUDWLQJ#9ROWDJH
43
9
7RSW 58
&
3188
31:3
9
''/
0LQLPXP#2SHUDWLQJ#9ROWDJH-
1RWH4
073
&
7RSW
;8
&
3198
31;3
9
1FK
9
'6
31389/#9
''
31:39
9
'6
31839/#9
''
41839
3134
4133
3138
5133
P$
,
287
2XWSXW#&XUUHQW
+'ULYHU#2XWSXW#3LQ,
3FK
9
'6
05149/9
''
;139
418
613
P$
W
3/+
2XWSXW#'HOD\#7LPH-
1RWH5
433
--V
09
'(7
2
7
'HWHFWRU#7KUHVKROG#7HPSHUDWXUH
&RHIILFLHQW
073
&
7RSW
;8
&
433
SSP2
&
*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 Type, Output pin is pulled up with a resistance of 470k
to
5.0V.)
*Note2: In the case of CMOS Output Type: The time interval between the rising edge of V
DD
input pulse from
0.7V to (+V
DET
)+2.0V and output voltage level becoming to V
DD
/2.
In the case of Nch Open Drain Output Type: Output pin is pulled up with a resistance of 470k
to
5.0V, The time interval between the rising edge of V
DD
input pulse from
0.7V to (+V
DET
)+2.0V and out-
put voltage level becoming to 2.5V.
R3111xxx1A/C
12
ELECTRICAL CHARACTERISRICS BY DETECTOR THRESHOLD
R3111x09x to R3111x60x
Detector Threshold
Detector Threshold
Hysteresis
Supply Current 1
Supply Current 2
-V
DET
[V]
V
HYS
[V]
I
SS1
[
A]
I
SS2
[
A]
Part
Number
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
Condition
TYP.
MAX.
Condition
TYP.
MAX.
56444[3<4[
31;;5
31<33
31<4;
3135:
31378
31396
31<
51:
56444[434[
31<;3
41333
41353
31363
31383
313:3
56444[444[
413:;
41433
41455
31366
31388
313::
56444[454[
414:9
41533
41557
31369
31393
313;7
56444[464[
415:7
41633
41659
3136<
31398
313<4
56444[474[
416:5
41733
4175;
31375
313:3
313<;
56444[484[
417:3
41833
41863
31378
313:8
31438
56444[494[
4189;
41933
41965
3137;
313;3
31445
56444[4:4[
41999
41:33
41:67
31384
313;8
3144<
56444[4;4[
41:97
41;33
41;69
31387
313<3
31459
56444[4<4[
41;95
41<33
41<6;
3138:
313<8
31466
31;
517
413
613
56444[534[
41<93
51333
51373
31393
31433
31473
56444[544[
5138;
51433
51475
31396
31438
3147:
56444[554[
51489
51533
51577
31399
31443
31487
56444[564[
51587
51633
51679
3139<
31448
31494
56444[574[
51685
51733
5177;
313:5
31453
3149;
56444[584[
51783
51833
51883
313:8
31458
314:8
56444[594[
5187;
51933
51985
313:;
31463
314;5
56444[5:4[
51979
51:33
51:87
313;4
31468
314;<
56444[5;4[
51:77
51;33
51;89
313;7
31473
314<9
56444[5<4[
51;75
51<33
51<8;
313;:
31478
31536
9
''
+09
'(7
,
031439
31<
51:
414
616
56444[634[
51<73
61333
61393
313<3
31483
31543
56444[644[
6136;
61433
61495
313<6
31488
3154:
56444[654[
61469
61533
61597
313<9
31493
31557
56444[664[
61567
61633
61699
313<<
31498
31564
56444[674[
61665
61733
6179;
31435
314:3
3156;
56444[684[
61763
61833
618:3
31438
314:8
31578
56444[694[
6185;
61933
619:5
3143;
314;3
31585
56444[6:4[
61959
61:33
61::7
31444
314;8
3158<
56444[6;4[
61:57
61;33
61;:9
31447
314<3
31599
56444[6<4[
61;55
61<33
61<:;
3144:
314<8
315:6
9
''
+09
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,
031469
413
613
415
619
56444[734[
61<53
71333
713;3
31453
31533
315;3
56444[744[
7134;
71433
714;5
31456
31538
315;:
56444[754[
71449
71533
715;7
31459
31543
315<7
56444[764[
71547
71633
716;9
3145<
31548
31634
56444[774[
71645
71733
717;;
31465
31553
3163;
56444[784[
71743
71833
718<3
31468
31558
31648
56444[794[
7183;
71933
719<5
3146;
31563
31655
56444[7:4[
71939
71:33
71:<7
31474
31568
3165<
56444[7;4[
71:37
71;33
71;<9
31477
31573
31669
56444[7<4[
71;35
71<33
71<<;
3147:
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Note 1: In the case of CMOS Output parts; when the voltage is forced to V
DD
from 0.7V to (+V
DET
)+2.0V, time interval between the ris-
ing edge of V
DD
and the reaching point at 50% of Output Voltage. In the case of Nch open Drain Output parts : Output pin is
pulled up to 5V through 470k
,and when the voltage is forced to V
DD
from 0.7V to (+V
DET
)+2.0V, time interval between the ris-
ing edge of V
DD
and the reaching point ar 50% of Output Voltage.
Note 2: V
DD
value when Output Voltage is equal or less than 0.1V. In the case of Nch Open Drain Output parts, Output pin is pulled up
to 5V through 470k
resistor.
Condition 1: Topt=25
C
Condition 2: -40
C
Topt
85
C
R3111xxx1A/C
13
Output Current 1
Output Current 2
Output Delay
Time
Minimum Operat-
ing Voltage
Detector Threshold Tem-
perature Coefficient
I
OUT1
[mA]
I
OUT2
[mA]
t
PLH
[
s]
V
DDL
[V]
-V
DET
/
T[ppm/
C]
Condition
MIN.
TYP.
Condition
MIN.
TYP.
MAX.
TYP.
MAX.
Condition
TYP.
V
DD
=
0.85V
0.05
0.5
V
DD
=
1.0V
0.2
1.0
1FK
9
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31389
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R3111xxx1A/C
14
OPERATION
V
DD
OUT
GND
Vref
Ra
Rb
Rc
Pch
Nch
Comparator
Figure 1. Block Diagram
t
PLH
Supply Voltage
(V
DD
)
Output Voltage
(V
OUT
)
Released Voltage(+V
DET
)
Detector Threshold(-V
DET
)
Detector Threshold
Hysteresis
1
2
3
4
5
A
B
Minimum Operating Voltage
GND
GND
Step
1
2
3
4
5
&RPSDUDWRU
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,,,
,9
9
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/
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2))
21
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ILQLWH
21
2))
3FK
21
2))
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ILQLWH
2))
21
2XWSXW#7U1
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2))
21
,QGH0
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21
2))
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Rc
Rb
Ra
Rc
Rb
+
+
+
x#9
''
,,1###
Rb
Ra
Rb
+
x#9
''
Figure 2. Operation Diagram
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R3111xxx1A/C
15
TEST CIRCUITS
I
SS
V
DD
OUT
GND
V
IN
R3111
X
Series
R3111
X
Series
V
DD
V
OUT
5.0V
OUT
GND
V
IN
470k
#
-3XOO0XS#FLUFXLW#LV#QRW#QHFHVVDU\#IRU
&026#2XWSXW#W\SH/#RU#56444;;;;&1
Figure 3. Supply Current Test Circuit
Figure 4. Detector Threshold Test Circuit
V
DD
V
DS
OUT
I
OUT
GND
V
IN
R3111
X
Series
R3111
X
Series
V
DD
V
DD-
V
DS
V
DS
OUT
I
OUT
GND
V
IN
*Apply to CMOS Output type only
Figure 5. Nch Driver Output Current Test
Circuit
Figure 6. Pch Driver Output Current Test Circuit
V
DD
V
SS
V
SS
OUT
OUT
GND
P.G.
R3111
XXX
1A
Series
470k
C
OUT
+5.0V
0.7V
R
OUT
+V
DET
+2.0V
OUT
P.G.
V
DD
V
SS
V
SS
OUT
GND
R3111
XXX
1A
Series
470k
100k
C
IN
+5.0V
0.7V
R
OUT
R
IN
+V
DET
+2.0V
Figure 7. Output Delay Time Test Circuit (1)
Figure 8. Output Delay Time Test Circuit (2)
R3111xxx1A/C
16
TYPICAL CHARACTERISTICS
1)
Supply Current vs. Input Voltage
R3111x091C
R3111x271C
Topt=85
C
25
C
-40
C
2.5
2.0
1.5
1.0
0.5
0.0
Input Voltage V
IN
(V)
0
2
4
6
8
10
Supply Current I
SS
(
A)
Topt=85
C
25
C
-40
C
2.0
1.5
1.0
0.5
0.0
Input Voltage V
IN
(V)
0
2
4
6
8
10
Supply Current I
SS
(
A)
R3111x451C
Topt=85
C
25
C
-40
C
2.0
1.5
1.0
0.5
0.0
Input Voltage V
IN
(V)
0
2
4
6
8
10
Supply Current I
SS
(
A)
2)
Detector Threshold Hysteresis vs. Temperature
R3111x091C
R3111x271C
+V
DET
-V
DET
1.00
0.98
0.96
0.94
0.92
0.90
0.88
0.84
0.86
Temperature Topt(
C)
-60
0
20
40
60
80
-40
-20
100
Detector Threshold
-V
DET
(V)
2.9
2.8
2.7
2.6
2.5
+V
DET
-V
DET
Temperature Topt(
C)
-60
0
20
40
60
80
-40
-20
100
Detector Threshold
-V
DET
(V)
R3111xxx1A/C
17
R3111x451C
4.8
4.7
4.6
4.5
4.4
+V
DET
-V
DET
Temperature Topt(
C)
-60
0
20
40
60
80
-40
-20
100
Detector Threshold
-V
DET
(V)
3)
Output Voltage vs. Input Voltage
R3111x091C
R3111x091A
Topt=-40
C
25
C
85
C
V
DD
Pull-up 470k
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.0
0.2
Input Voltage V
IN
(V)
0
0.6
0.8
1
1.2
1.4
0.2
0.4
1.6
Output V
oltage V
OUT
(V)
5V Pull-up 470k
6
5
4
3
2
0
1
Input Voltage V
IN
(V)
0
0.6
0.8
1
1.2
1.4
0.2
0.4
1.6
Output V
oltage V
OUT
(V)
Topt=-40
C
25
C
85
C
R3111x271C
R3111x271A
Topt=-40
C
25
C
85
C
V
DD
Pull-up 470k
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.0
0.5
Input Voltage V
IN
(V)
0
1.5
2
2.5
3
3.5
0.5
1
4
Output V
oltage V
OUT
(V)
5V Pull-up 470k
6
5
4
3
2
0
1
Input Voltage V
IN
(V)
0
1.5
2
2.5
3
3.5
0.5
1
4
Output V
oltage V
OUT
(V)
Topt=-40
C
25
C
85
C
R3111xxx1A/C
18
R3111x451C
R3111x451A
Topt=-40
C
25
C
85
C
V
DD
Pull-up 470k
6
5
4
3
2
0
1
Input Voltage V
IN
(V)
0
2
3
1
6
5
4
Output V
oltage V
OUT
(V)
5V Pull-up 470k
6
5
4
3
2
0
1
Input Voltage V
IN
(V)
0
2
3
1
6
5
4
Output V
oltage V
OUT
(V)
Topt=-40
C
25
C
85
C
4)
Nch Driver Output Current vs. V
DS
R3111x091C
R3111x091C
Topt=25
C
V
DD
=0.85V
0.7V
700
600
500
400
300
200
0
100
V
DS
(V)
0
0.2
0.4
0.6
0.8
Output Current I
OUT
(
A)
V
DD
=0.8V
0.7V
Topt=25
C
300
250
200
150
100
0
50
V
DS
(V)
0
0.02
0.04
0.06
0.08
0.1
Output Current I
OUT
(
A)
R3111x271C
R3111x271C
Topt=25
C
V
DD
=2.5V
2.0V
1.5V
20
18
14
16
12
10
8
6
4
0
2
V
DS
(V)
0
0.5
1
1.5
2
2.5
Output Current I
OUT
(mA)
V
DD
=0.8V
0.7V
Topt=25
C
300
250
200
150
100
0
50
V
DS
(V)
0
0.02
0.04
0.06
0.08
0.1
Output Current I
OUT
(
A)
R3111xxx1A/C
19
R3111x451C
R3111x451C
Topt=25
C
V
DD
=4.5V
4.0V
3.5V
3.0V
2.5V
2.0V
1.5V
60
50
40
30
20
0
10
V
DS
(V)
0
0.5
1
1.5
2
2.5
3
4
3.5
4.5
Output Current I
OUT
(mA)
V
DD
=0.8V
0.7V
Topt=25
C
300
250
200
150
100
0
50
V
DS
(V)
0
0.02
0.04
0.06
0.08
0.1
Output Current I
OUT
(
A)
5)
Nch Driver Output Current vs. Input Voltage
R3111x091C
R3111x271C
900
800
700
600
500
400
300
200
0
100
Input Voltage V
IN
(V)
0
0.2
0.4
0.6
1
0.8
Output Current I
OUT
(mA)
Topt=-85
C
25
C
-40
C
14
12
10
8
6
4
0
2
Input Voltage V
IN
(V)
0
0.5
1
1.5
1
2.5
3
Output Current I
OUT
(mA)
Topt=-40
C
25
C
85
C
R3111x451C
25
20
15
10
5
0
Input Voltage V
IN
(V)
0
1
2
3
4
5
6
Output Current I
OUT
(mA)
Topt=-40
C
25
C
85
C
R3111xxx1A/C
20
6)
Pch Driver Output Current vs. Input Voltage
R3111x091C
R3111x271C
Topt=25
C
V
DS
=0.7V
0.5V
1.4
1.2
1.0
0.8
0.6
0.4
0.0
0.2
Input Voltage V
IN
(V)
0
2
4
6
8
Output Current I
OUT
(mA)
Topt=25
C
V
DS
=2.1V
1.5V
0.5V
1.0V
3.5
3.0
2.5
2.0
1.5
1.0
0.0
0.5
Input Voltage V
IN
(V)
0
1
2
4
3
6
5
7
Output Current I
OUT
(mA)
R3111x451C
Topt=25
C
V
DS
=2.1V
1.5V
0.5V
1.0V
4.5
3.5
4.0
3.0
2.5
2.0
1.5
1.0
0.0
0.5
Input Voltage V
IN
(V)
0
2
4
8
6
10
Output Current I
OUT
(mA)
7)
Output Delay Time vs. Load Capacitance
R3111x091A
R3111x271A
tPLH
tPHL
100
10
1
0.1
0.01
0.001
Load Capacitance C
OUT
(
F)
0.0001
0.01
0.001
0.1
Output Dela
y
Time tP(ms)
tPLH
tPHL
100
10
1
0.1
0.01
0.001
Load Capacitance C
OUT
(
F)
0.0001
0.01
0.001
0.1
Output Dela
y
Time tP(ms)
R3111xxx1A/C
21
R3111x451A
t
PLH
t
PHL
100
10
1
0.1
0.01
0.001
Load Capacitance C
OUT
(
F)
0.0001
0.01
0.001
0.1
Output Dela
y
Time tP(ms)
8)
Output Delay Time vs. Input Pin Capacitance
R3111x091A
R3111x271A
t
PLH
t
PHL
100
10
1
0.1
0.01
0.001
Input Pin Capacitance C
IN
(
F)
0.0001
0.01
0.001
0.1
Output Dela
y
Time tP(ms)
t
PLH
t
PHL
100
10
1
0.1
0.01
0.001
Input Load Capacitance C
IN
(
F)
0.0001
0.01
0.001
0.1
Output Dela
y
Time tP(ms)
R3111x451A
t
PLH
t
PHL
100
10
1
0.1
0.01
0.001
Input Pin Capacitance C
IN
(
F)
0.001
0.1
0.01
1
Output Dela
y
Time tP(ms)
R3111xxx1A/C
22
TYPICAL APPLICATION
R3111xxx1A CPU Reset Circuit (Nch Open Drain Output)
Case 1.Input Voltage to R3111xxx1A is equal to In-
put Voltage to CPU
Case 2.Input Voltage to R3111xxx1A is unequal to
Input Voltage to CPU
V
DD
V
DD
V
DD
OUT
GND
GND
R3111
XXX
1A
SERIES
470k
CPU
RESET
R
V
DD
V
DD2
V
DD
V
DD1
OUT
GND
GND
R3111
XXX
1A
SERIES
CPU
RESET
R
470k
R3111xxx1A CPU Reset Circuit CMOS Output
V
DD
V
DD
V
DD
OUT
GND
GND
R3111
XXX
1C
SERIES
CPU
RESET
R3111xxx1A Output Delay Time Circuit 1
(Nch Open Drain Output)
R3111xxx1A Output Delay Time Circuit 2
(Nch Open Drain Output)
V
DD
V
DD
V
DD
OUT
GND
GND
R3111
XXX
1A
SERIES
CPU
RESET
R
470k
VDD
V
DD
V
DD
OUT
GND
GND
R3111
XXX
1A
SERIES
CPU
RESET
R2
R1
470k
100k
Memory Back-up Circuit
V
DD
V
DD
OUT
R3111
XXX
1C
SERIES
D1
V
CC
GND
GND
A
B
G
Y1
Y2
Y3
Y4
D2
V
CC
GND CS
V
CC
GND CS
V
CC
GND CS
V
CC
GND CS
RAM1
RAM2
RAM3
RAM4
R3111xxx1A/C
23
Voltage level Indicator Circuit (lighted when the power runs out)
(Nch Open Drain Output)
V
DD
V
DD
OUT
GND
R3111
XXX
1A
SERIES
Detector Threshold Adjustable Circuit
(Nch Open Drain Type Output)
V
DD
V
DD
OUT
GND
R3111
XXX
1A
SERIES
C
+
Ra
Rb
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+09
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+\VWHUHVLV#9ROWDJH
+9
+<6
,-+5D.5E,25E
*)
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
V
DD
V
DD
OUT
OUT
OUT
GND
GND
R3111
XXX
1A
SERIES
R3111
XXX
1A
SERIES
V
DET
2
V
DET
1
V
DD
V
SS
V
SS
OUT
V
DET
2
V
DET
1
R3111xxx1A/C
24
Over-charge Preventing Circuit
V
DD
OUT
GND
R3111
XXX
1C
SERIES
Light
R1
R2
R4
R3
D1
Solar Batter
y
Load
TECHNICAL NOTES
V
DD
V
DD
OUT
GND
R3111
SERIES
R
V
DD
V
DD
OUT
GND
R1
R2
R3111
SERIES
Figure 9
Figure 10
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