TK11243CMIL-GH [AKM]
Fixed Positive LDO Regulator, 4.3V, 0.44V Dropout, CMOS;
| 型号： | TK11243CMIL-GH |
| 厂家： | 
ASAHI KASEI MICROSYSTEMS |
| 描述： | Fixed Positive LDO Regulator, 4.3V, 0.44V Dropout, CMOS |
| 文件： | 总27页 (文件大小：775K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TK112xxCM/U
APPLICATION MANUAL
LDO REGULATOR WITH ON/OFF SWITCH
TK112xxCM/U
GC3-H026H
Page 1
TK112xxCM/U
Features
· Very low Dropout Voltage. (Vdrop=105mV at 100mA)
· Very good stability (CL=0.1mF is stable for any type capacitor with 2.5V £ Vout)
· High Precision output Voltage (±1.5% or ±50mV)
· Good ripple rejection ratio (80dB at 1kHz)
· Wide operating voltage range (1.8V ~ 14.5V)
· Peak output current is 480mA.(10% down point)
· Built-in Short circuit protection
· Built-in Thermal Shutdown
· Suitable for Very Low Noise Applications
· Built-in on/off Control (0.1mA Max Standby current) High On
· Very Small Surface Mount Packages SOT23L / SOT89 package
· Built-in reverse bias over current protection
Description
The TK112xxC is an integrated circuit with a silicon monolithic bipolar structure. The regulator is of the low saturation
voltage output type with very little quiescent current (65mA).
The PNP power transistor is built-in. The I/O voltage difference is 0.17V (typical) when a current of 200mA is supplied
to the system. Because of the low voltage drop, the voltage source can be effectively used; this makes it very suitable for
battery powered equipment.
The on/off function is built into the IC. The current during standby mode becomes very small (pA level).
The output voltage is available from 1.5 to 10.0V in 0.1V steps. The output voltage is trimmed with high accuracy. This
allows the optimum voltage to be selected for the equipment.
The over current sensor circuit and the reverse-bias protection circuit are built-in.
It is a very rugged design because the ESD protection is high. Therefore, the TK112xxC can be used with confidence.
When mounted on the PCB, the power dissipation rating becomes about 600mW/ 900mW, even though the packages are
very small.
The TK112xxC features very high stability in both DC and AC.
The capacitor on the output side provides stable operation with 0.1mF with 2.5V £ Vout. A capacitor of any type can be
used; however, the larger this capacitor is, the better the overall characteristics are.
GC3-H026H
Page 2
TK112xxCM/U
ORDERING INFORMATION
T K 1 1 2
C
-
Environment Code
-GH : Lead Free and Halogen Free (SOT23L-6)
-G : Lead Free (SOT89-5)
Voltage Code
(Refer to the following table)
Version
C
Tape / Reel Code
L : Left Type (SOT23L-6)
B : Back Type (SOT89-5)
Package Code
M : SOT23L-6
U : SOT89-5
Rank Code
C : C Rank
I : I Rank
Voltage Code
V OUT V CODE V OUT V CODE V OUT V CODE V OUT V CODE
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
15
16
17
18
19
20
21
22
23
24
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
25
26
27
28
29
30
31
32
33
34
3.5
3.6
3.7
3.8
3.9
4.0
4.1
4.2
4.3
4.4
35
36
37
38
39
40
41
42
43
44
4.5
4.6
4.7
4.8
4.9
5.0
45
46
47
48
49
50
GC3-H026H
Page 3
TK112xxCM/U
Absolute Maximum Ratings
Ta=25°C
Parameter
Absolute Maximum Ratings
Supply Voltage
Symbol
Rating
Units
Conditions
VccMAX
-0.4 ~ 16
-0.4 ~ 6
V
V
Vout £ 2.0V
Reverse Bias
VrevMAX
-0.4 ~ 12
-0.4 ~ 5
V
2.1V £ Vout
Np pin Voltage
VnpMAX
VcontMAX
Tstg
V
Control pin Voltage
Storage Temperature Range
-0.4 ~ 16
-55 ~ 150
V
°C
SOT23L-6: 600
SOT89-5: 900
Power Dissipation
PD
mW
Internal Limited Tj=150°C *
Operating Condition
Operating Temperature Range
TOP
VOP
-40 ~ 85
2.1 ~ 14.5
1.8 ~ 14.5
500
°C
V
TOP =-40 ~ 85°C
TOP =-30 ~ 80°C
Operating Voltage Range
V
Short Circuit Current
Ishort
mA
* PD must be decreased at rate of 4.8mW/°C(SOT23L-6), 7.2mW/°C(SOT89-5) for operation above 25°C.
The maximum ratings are the absolute limitation values with the possibility of the IC being damaged.
If the operation exceeds any of these standards, quality cannot be guaranteed.
GC3-H026H
Page 4
TK112xxCM/U
Electrical Characteristics
(1) C rank
The operation between -40 ~ 85°C is guaranteed by design. The parameter with limit value will be guaranteed
with test when manufacturing or SQC (Statistical Quality Control) technique.
Vin=VoutTYP+1V,Vcont=1.8V,Ta=25°C
Value
Parameter
Output Voltage
Symbol
Units
Conditions
MIN
TYP
MAX
Vout
V
Iout = 5mA
DVin = 5V
Refer to TABLE 1
Line Regulation
Load Regulation
LinReg
LoaReg
-
0.0
6.0
mV
mV Iout = 5mA ~ 100mA
mV Iout = 5mA ~ 200mA
mV Iout = 5mA ~ 300mA
mV Iout = 100mA
Refer to TABLE 1
Refer to TABLE 1
Refer to TABLE 1
Dropout Voltage *1
Vdrop
-
105
170
235
235
480
65
170
-
270
370
370
-
mV Iout = 200mA
-
mV Iout = 270mA (2.1V £ Vout £ 2.3V)
mV Iout = 300mA (2.4V £ Vout)
-
Maximum Output Current *2 IoutMAX
380
mA
mA
mA
When (VoutTYP´0.9)
Iout = 0mA
Supply Current
Standby Current
Quiescent Current
Control Terminal
Control Current
Control Voltage
Iq
-
-
-
90
Istandby
Ignd
0.0
1.8
0.1
3.0
Vcont = 0V
mA Iout = 100mA
Icont
-
1.8
-
5.0
10
-
Vcont = 1.8V
Vout ON state
Vout OFF state
Vout ON state
Vout OFF state
mA
V
Vcont
-
-
-
-
TOP=-40~85°C
TOP=-30~80°C
0.35
-
V
1.6
-
V
0.6
V
*1: For Vout £ 2.0V , no regulations.
*2: The maximum output current is limited by power dissipation.
GC3-H026H
Page 5
TK112xxCM/U
TABLE 1. Output Voltage , Load Regulation
Load Regulation
Iout = 200mA
Output Voltage
Part Number
Iout = 100mA
Iout = 300mA
MIN
V
TYP
V
MAX
V
TYP
mV
11
11
11
11
11
11
11
11
11
12
12
12
12
12
12
12
12
12
12
12
13
13
13
13
13
13
13
13
13
13
14
14
14
14
14
14
14
14
MAX
mV
24
24
24
24
25
25
25
25
26
26
26
26
27
27
27
27
27
28
28
28
28
29
29
29
29
29
30
30
30
30
31
31
31
31
31
32
32
32
TYP
mV
21
22
22
22
22
23
23
23
23
24
24
24
24
25
25
25
25
26
26
26
26
27
27
27
27
28
28
28
28
29
29
29
29
30
30
30
30
31
MAX
mV
49
49
50
50
51
51
52
53
53
54
54
55
55
56
56
57
58
58
59
59
60
60
61
62
62
63
63
64
64
65
66
66
67
67
68
68
69
70
TYP
mV
34
34
35
35
36
36
37
37
38
38
39
39
40
40
41
41
42
42
43
44
44
45
45
46
46
47
47
48
48
49
49
50
50
51
51
52
52
53
MAX
mV
77
TK11213C
TK11214C
TK11215C
TK11216C
TK11217C
TK11218C
TK11219C
TK11220C
TK11221C
TK11222C
TK11223C
TK11224C
TK11225C
TK11226C
TK11227C
TK11228C
TK11229C
TK11230C
TK11231C
TK11232C
TK11233C
TK11234C
TK11235C
TK11236C
TK11237C
TK11238C
TK11239C
TK11240C
TK11241C
TK11242C
TK11243C
TK11244C
TK11245C
TK11246C
TK11247C
TK11248C
TK11249C
TK11250C
1.250
1.350
1.450
1.550
1.650
1.750
1.850
1.950
2.050
2.150
2.250
2.350
2.450
2.550
2.650
2.750
2.850
2.950
3.050
3.150
3.250
3.349
3.447
3.546
3.644
3.743
3.841
3.940
4.038
4.137
4.235
4.334
4.432
4.531
4.629
4.728
4.826
4.925
1.300
1.400
1.500
1.600
1.700
1.800
1.900
2.000
2.100
2.200
2.300
2.400
2.500
2.600
2.700
2.800
2.900
3.000
3.100
3.200
3.300
3.400
3.500
3.600
3.700
3.800
3.900
4.000
4.100
4.200
4.300
4.400
4.500
4.600
4.700
4.800
4.900
5.000
1.350
1.450
1.550
1.650
1.750
1.850
1.950
2.050
2.150
2.250
2.350
2.450
2.550
2.650
2.750
2.850
2.950
3.050
3.150
3.250
3.350
3.451
3.553
3.654
3.756
3.857
3.959
4.060
4.162
4.263
4.365
4.466
4.568
4.669
4.771
4.872
4.974
5.075
78
79
80
82
83
84
85
86
88
89
90
91
92
93
95
96
97
98
99
101
102
103
104
105
107
108
109
110
111
112
114
115
116
117
118
120
121
GC3-H026H
Page 6
TK112xxCM/U
TABLE 1. Output Voltage , Load Regulation (continue)
Load Regulation
Iout = 200mA
Output Voltage
Part Number
Iout = 100mA
Iout = 300mA
MIN
V
TYP
V
MAX
V
TYP
mV
14
MAX
mV
32
TYP
mV
31
MAX
mV
70
TYP
mV
53
MAX
mV
121
124
125
127
133
156
TK11251C
TK11253C
TK11254C
TK11255C
TK11260C
TK11280C
5.023
5.220
5.319
5.417
5.910
7.880
5.100
5.300
5.400
5.500
6.000
8.000
5.177
5.380
5.481
5.583
6.090
8.120
15
33
31
71
54
15
33
32
72
55
15
33
32
72
55
15
34
33
75
58
17
39
38
87
68
GC3-H026H
Page 7
TK112xxCM/U
(2) I rank
The operation between -40 ~ 85°C is guaranteed with normal test. The parameter with limit value will be guaranteed
with test when manufacturing or SQC(Statistical Quality Control) technique.
Vin=VoutTYP+1V,Vcont=1.8V,Ta=-40 ~ 85°C
Value
Parameter
Symbol
Units
Conditions
MIN
TYP
MAX
Output Voltage
Vout
V
Iout = 5mA
DVin = 5V
Refer to TABLE 1
Line Regulation
Load Regulation
LinReg
LoaReg
0.0
8.0
mV
mV Iout = 5mA ~ 100mA
mV Iout = 5mA ~ 200mA
mV Iout = 5mA ~ 300mA
mV Iout = 100mA (2.2V £ Vout)
mV Iout = 200mA (2.2V £ Vout)
mV Iout = 300mA (2.4V £ Vout)
Refer to TABLE 1
Refer to TABLE 1
Refer to TABLE 1
Dropout Voltage *1
Vdrop
105
170
235
480
65
200
320
440
Maximum Output Current *2 IoutMAX
340
mA
mA
mA
When (VoutTYP´0.9)
Iout = 0mA
Supply Current
Standby Current
Quiescent Current
Control Terminal
Control Current
Control Voltage
Iq
100
0.5
3.6
Istandby
Ignd
0.0
1.8
Vcont = 0V
mA Iout = 100mA
Icont
5.0
12
Vcont = 1.8V
Vout ON state
Vout OFF state
mA
V
Vcont
1.8
0.35
V
*1: For Vout £ 2.1V , no regulations.
*2: The maximum output current is limited by power dissipation.
GC3-H026H
Page 8
TK112xxCM/U
TABLE 1. Output Voltage , Load Regulation
Load Regulation
Iout = 200mA
Output Voltage
Part Number
Iout = 100mA
Iout = 300mA
MIN
V
TYP
V
MAX
V
TYP
mV
11
11
11
11
11
11
11
11
11
12
12
12
12
12
12
12
12
12
12
12
13
13
13
13
13
13
13
13
13
13
14
14
14
14
14
14
14
14
MAX
mV
29
29
29
29
30
30
30
30
31
31
31
31
31
32
32
32
32
33
33
33
33
33
34
34
34
34
34
35
35
35
35
36
36
36
36
36
37
37
TYP
mV
21
22
22
22
22
23
23
23
23
24
24
24
24
25
25
25
25
26
26
26
26
27
27
27
27
28
28
28
28
29
29
29
29
30
30
30
30
31
MAX
mV
60
61
61
62
63
63
64
65
65
66
67
68
68
69
70
70
71
72
73
73
74
75
75
76
77
77
78
79
80
80
81
82
82
83
84
84
85
86
TYP
mV
34
34
35
35
36
36
37
37
38
38
39
39
40
40
41
41
42
42
43
44
44
45
45
46
46
47
47
48
48
49
49
50
50
51
51
52
52
53
MAX
mV
95
TK11213C
TK11214C
TK11215C
TK11216C
TK11217C
TK11218C
TK11219C
TK11220C
TK11221C
TK11222C
TK11223C
TK11224C
TK11225C
TK11226C
TK11227C
TK11228C
TK11229C
TK11230C
TK11231C
TK11232C
TK11233C
TK11234C
TK11235C
TK11236C
TK11237C
TK11238C
TK11239C
TK11240C
TK11241C
TK11242C
TK11243C
TK11244C
TK11245C
TK11246C
TK11247C
TK11248C
TK11249C
TK11250C
1.220
1.320
1.420
1.520
1.620
1.720
1.820
1.920
2.020
2.120
2.220
2.320
2.420
2.520
2.620
2.720
2.820
2.920
3.020
3.120
3.217
3.315
3.412
3.510
3.607
3.705
3.802
3.900
3.997
4.095
4.192
4.290
4.387
4.485
4.582
4.680
4.777
4.875
1.300
1.400
1.500
1.600
1.700
1.800
1.900
2.000
2.100
2.200
2.300
2.400
2.500
2.600
2.700
2.800
2.900
3.000
3.100
3.200
3.300
3.400
3.500
3.600
3.700
3.800
3.900
4.000
4.100
4.200
4.300
4.400
4.500
4.600
4.700
4.800
4.900
5.000
1.380
1.480
1.580
1.680
1.780
1.880
1.980
2.080
2.180
2.280
2.380
2.480
2.580
2.680
2.780
2.880
2.980
3.080
3.180
3.280
3.383
3.485
3.588
3.690
3.793
3.895
3.998
4.100
4.203
4.305
4.408
4.510
4.613
4.715
4.818
4.920
5.023
5.125
96
97
98
100
118
120
122
124
126
127
129
131
133
135
137
139
141
143
145
147
149
151
153
155
157
159
161
162
164
166
168
170
172
174
176
178
180
GC3-H026H
Page 9
TK112xxCM/U
TABLE 1. Output Voltage , Load Regulation (continue)
Load Regulation
Iout = 200mA
Output Voltage
Part Number
Iout = 100mA
Iout = 300mA
MIN
V
TYP
V
MAX
V
TYP
mV
15
MAX
mV
38
TYP
mV
32
MAX
mV
89
TYP
mV
55
MAX
mV
190
TK11255C
TK11257C
TK11260C
TK11280C
5.362
5.557
5.850
7.800
5.500
5.700
6.000
8.000
5.638
5.843
6.150
8.200
15
38
32
91
56
194
15
39
33
93
58
199
17
43
38
107
68
238
GC3-H026H
Page 10
TK112xxCM/U
Top view
Pin Layout
Vout
6
GND
5
Vin
4
Vin GND Vout
6
5
4
SOT89
SOT-23L
1
2
3
2
1
3
on/off
Control
GND Np(Vref)
on/off
Control
Np(Vref) GND
Application
Iin
GND
Vin
Vout
Np
A
CL=0.22mF
Vin
V
(CL=1.0mF)
Cin=0.1mF
Iout
A
Cont.
GND
Icont
Vcont
Cnp=0.1mF
Block Diagram
Vout
Vin
Control Circuit
Cont.
Constant
Thermal &
Current
Source
Over Current Protect
Bandgap
Reference
500k
Np
GND
GC3-H026H
Page 11
TK112xxCM/U
Input /Output Capacitors
Linear regulators require input and output capacitors in order to maintain the regulator's loop stability. If a 0.1mF capacitor is connected to
the output side, the IC provides stable operation at any voltage in the practical current region. However, increase the CL capacitance when
using the IC in the low current region and low voltage. Otherwise, the IC oscillates.
The equivalent series resistance (ESR) of the output capacitor must be in the stable operation area. However, it is recommended to use as
large a value of capacitance as is practical. The output noise and the ripple noise decrease as the capacitance value increases. ESR values
vary widely between ceramic and tantalum capacitors. However, tantalum capacitors are assumed to provide more ESR damping resistance,
which provides greater circuit stability. This implies that a higher level of circuit stability can be obtained by using tantalum capacitors
when compared to ceramic capacitors with similar values.
Vout
The recommended value : Cin=CL=0.22mF(MLCC) Iout ³ 0.5mA.
Cin=0.22mF
The input capacitor is necessary when the battery is discharged, the power supply impedance
~ 0.1mF
increases, or the line distance to the power supply is long.
CL=0.22mF
~ 0.1mF
This capacitor might be necessary on each individual IC even if two or more regulator ICs are used. It is not possible to determine this
indiscriminately. Please confirm the stability while mounted. The IC provides stable operation with an output side capacitor of 0.1mF
(Vout ³ 2.5V). If it is 0.1mF or more over the full range of temperature, either a ceramic capacitor or tantalum capacitor can be used
without considering ESR. It is not possible to say indiscriminately. Please confirm stability while mounted.
Output voltage, Output current vs. Stable Operation Area
Vout=1.5V
Vout=1.8V , 2.2V
Vout=2.5V, 3.0V
Vout=5.0V
Vout=4.0V
100
10
100
10
100
100
10
100
10
10
Stable Area
Stable Area
Stable Area
Stable Area
Stable Area
CL=0.068mF
CL=0.068mF
CL=0.068mF
CL=0.1 mF
CL=0.068mF
1
0.1
1
1
1
1
0.1
0.1
0.01
0.1
0.1
0.01
0.01
0.01
0.01
4.0
2.0
50
100
150
0.5
50
Iout [mA]
CL³0.68mF All Stable
100
150
0.5
50
Iout [mA]
CL³0.33mF All Stable
100
50
100
150
0.5
50
Iout [mA]
CL³0.33mF All Stable
100
150
150
Iout [mA]
Iout [mA]
CL³1.0mF All Stable
CL³2.2mF All Stable
The above graphs show stable operation with a ceramic capacitor of 0.1uF (excluding the low current region). If the capacitance is not
increased in the low voltage, low current area, stable operation may not be achieved. Please select the best output capacitor according to
the voltage and current used. The stability of the regulator improves if a big output side capacitor is used (the stable operation area
extends.) Please use as large a capacitance as is practical. Although operation above 150 mA has not been described, stability is equal to or
better than operation at 150 mA.
For evaluation
Kyocera
Murata
:CM05B104K10AB , CM05B224K10AB , CM105B104K16A , CM105B224K16A , CM21B225K10A
:GRM36B104K10 , GRM42B104K10 , GRM39B104K25 , GRM39B224K10 , GRM39B105K6.3
Capacitance vs. Voltage
B Curve
Capacitance vs. Temperature
%
0
%
Generally, a ceramic capacitor has both a
100
90
80
70
60
50
100
90
temperature characteristic and
characteristic. Please consider
a
voltage
both
B Curve
80
70
characteristics when selecting the part. The
B curves are the recommend characteristics.
F Curve
0
60
F Curve
50
4
6
8
10
2
-50 -25
25 50 75 100
Bias voltage(V)
Ta(°C)
GC3-H026H
Page 12
TK112xxCM/U
Output noise
TK11230C Cnp vs. Noise Iout=30mA BPF=400Hz ~ 80kHz
TK11230C Cnp vs Noise
TK112xxC Vout vs Noise
Iout=30mA Cnp=10000pF CL=0.22mF(MLCC)
Noise（mVrms)
Iout=30mA BPF:400 ~ 80kHz
CL=MLCC
Noise
(mVrms)
300
BPF:400 ~ 80kHz
CL=0.22mF
CL=0.47mF
CL=1.0mF
CL=2.2mF
CL=10mF
90
80
70
60
50
40
30
20
10
250
200
150
100
CL=Tantal
50
0
1
10
100
1000
10000
100000
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
Vout(V)
Cnp（ｐF）
TK11230C Iout vs Noise
TK11230C Iout vs. Noise
Noise(mVrms)
95
Noise(mVrms)
Cnp=10000pF BPF:400 ~ 80kHz
Cnp=10000pF BPF:400 ~ 80kHz
95
90
85
80
75
70
65
60
55
50
45
40
90
85
80
75
70
65
60
55
50
45
40
35
CL=0.22uF
CL=0.47uF
CL=1.0uF
CL=0.22uF
CL=0.47uF
CL=Tantal
CL=1.0uF
CL=2.2uF
CL=10uF
CL=MLCC
CL=2.2uF
CL=10uF
35
0
50
100
150
Iout(mA)
200
250
300
0
50
100
150
Iout(mA)
200
250
300
Increase Cnp to decrease the noise. The recommended Cnp capacitance is 6800pF(682) ~ 0.22mF(224).
The amount of noise increases with the higher output voltages.
Noise(mV/ÖHz)
Noise Level(1/f)
10
Cnp=1000pF
1
TK11230CM
Cin=10mF Iout=10mA
Cnp=0.1mF
0.1
CL=0.22mF（Ceramic)
Cnp=0.01mF
0.01
10
100
1k
Frequency(Hz)
10k
100k
GC3-H026H
Page 13
TK112xxCM/U
Ripple rejection
Vin=5.0V Vout=3.0V Iout=10mA
VR=500mVp-p f=100 ~ 1MHz Cnp=0.1uF
CL=0.22uF (MLCC)
Vout
Vin
112XX
CL
Cnp
0.1mF
CL=0.22 uF (Tantal)
Vcont
GND
CL=1uF (MLCC)
B : CL=0.22uF (Tantal)
B : Cref=0.001uF
CL=1 uF (Tantal)
A : CL=10uF (Tantal)
A : Cref=0.1uF
The ripple rejection characteristic depends on the characteristic and the capacitance value of the capacitor connected to the output side.
The RR characteristic of 50KHz or more varies greatly with the capacitor on the output side and PCB pattern. If necessary, please
confirm stability while operating.
Ripple Rejection at Low Vin
R.R (dB)
Ripple Rejection vs. Iout
R.R(dB)
0
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-10
-20
-30
-40
-50
-60
-70
-80
-90
Iout :1, 50, 100, 150, 200, 250, 300mA
Cnp=0.01μF
CL=0.22μF（Ceramic)
Vin=5.0V
Vripple=500mVp-p
Freq=1kHz
Without Cin Vripple:100mVp-p Freq:1kHz Cnp:0.01μF
CL:0.22μF（Ceramic)
Freq=400Hz
-100
0
0.1
1.0
0
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
Vin-Vout_Typ(V)
50
100
150
200
250
300
Iout(mA)
GC3-H026H
Page 14
TK112xxCM/U
TK112xxC Transient
· ON / OFF Transient
Vin
=VoutTYP+1V
6
4
Iout=30mA
CL
112xxC
Cin
1mF
1
3
Vcont=0VÛ2V
Cnp
(f=100Hz)
CL= Variable Cnp=0.001mF
CL= Variable Cnp=0.01mF
Vcont
ON
Vcont OFF ON
OFF
CL=
0.22mF
CL=
0.22mF
1.0mF
2.2mF
1.0mF , 2.2mF
Vout
Vout
1.0V/div
1.0V/div
50ms/div
10ms/div
Cnp= Variable CL=1mF
CL= Variable Cnp=0.01mF Io=30mA
Vcont
ON
Vcont
OFF ON
OFF
Cnp=
0.001mF
0.01mF
CL=
0.22mF
1.0mF
1.0V/div
250ms/div
Vout
Vout
0.1mF
2.2mF
1.0V/div
250ms/div
The rise time of the regulator depends on CL and Cnp; the fall time depends on CL.
GC3-H026H
Page 15
TK112xxCM/U
· LOAD Transient
CL= Variable Cnp=0.01mF
Vin
=VoutTYP+1V
33mA
Iout
ONÛOFF
33mA
6
4
Iout
3mA
3mA
112xxC
Cin
CL
1mF
1
3
CL=1.0mF 2.2mF
Vout
Vcont
1.8V
Cnp
0.01mF
CL=0.22mF
When the capacitor on the load side is increased, the load change becomes smaller.
Magnification
Iout=0 Û 30mA , 3 Û 33mA
33mA
30mA
0mA
30mA
0mA
33mA
3mA
Iout
3mA
Iout
Iout=0 Û 30mA
Iout=0Û30mA
Iout=3Û33mA
Vout
Vout
Iout=3 Û 33mA
The no load voltage change can be greatly improved by delivering a little
load current to ground (see right curve above).
Increase the load side capacitor when the load change is fast or when there is a large current change. In addition, at no load, the voltage
change can be reduced by delivering a little load current to ground.
· Line Transient
Cnp= Variable CL=1mF
CL= Variable Cnp=0.01mF
Vin
Vin
D1V
D1V
Cnp=0.001mF
CL=0.22mF
CL=1.0mF
Vout
Cnp=0.01mF
Cnp=0.1mF
CL=2.2mF
GC3-H026H
Page 16
TK112xxCM/U
Line regulation
DVout(mV)
Load regulation
DVout(mV)
15
10
5
0
-5
-10
-15
-20
-25
-30
10
0
Vo=2.0V
-10
-20
-30
-40
-50
-60
-70
Vo1.5V
Vo2.0V
Vo3.0V
Vo4.0V
Vo5.0V
Vo=3.0V
Vo=5.0V
-35
0
-80
5
10
Vin(V)
15
20
0
50
100
150
200
250
300
Iout(mA)
Regulation point
Vdrop
DVout(mV)
Vdrop(mV)
100
0
Iout=0mA,50mA,100mA,150mA,200mA,250mA,300mA
Iout=0mA
-50
-100
-150
-200
-250
-300
-350
-400
-450
-500
0.0
-100
-200
-300
Iout=300mA
100
0
100
200
300
400
500
Iout(mA)
DVin(mV)
Vcont vs. Icont
Icont(mA)
20
15
10
5
Vout
Icont
0
0.0
1.0
2.0
3.0
4.0
5.0
Vcont(V)
GC3-H026H
Page 17
TK112xxCM/U
IoutMax at low Vop
TK11215 ~ TK11224
Short circuit current
IoutMax(mA)
Vout(V)
500
450
400
350
300
250
200
150
100
50
6.0
5.0
4.0
3.0
2.0
1.0
0.0
0
1.7
1.8
1.9
2.0
Vop（V)
2.1
2.2
2.3
2.4
0
100
200
300
400
500
Iout(mA)
Istandby(A)
1.E-04
Standby current
GND current
Ignd(mA)
12
11
10
9
Vo1.5V
Vo2.0V
Vo3.0V
Vo4.0V
Vo5.0V
1.E-05
1.E-06
8
1.E-07
7
1.E-08
1.E-09
1.E-10
1.E-11
6
5
4
3
2
1
1.E-12
0
0
2
4
6
8
10 12 14 16 18 20
Vin(V)
150
200
250
300
0
100
50
Iout(mA)
Reverse bias current
Irev(mA)
60
50
40
30
20
10
0
Vout=3V
Vout=2V
Vout=4V
Vout=5V
0
1
2
3
4
5
6
7
8
9 10
Vrev(V)
GC3-H026H
Page 18
TK112xxCM/U
Temperature Characteristics
Max Iout
(Ta: Ambient temperature)
GND current
Iout (mA)
500
Ignd(mA)
16.0
480
14.0
12.0
10.0
8.0
Io=300mA
460
440
420
Io=200mA
Io=100mA
400
6.0
380
4.0
Io=50mA
360
2.0
Vout=(VoutTyp.´ 0.9
340
-50
0.0
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Ta(°C)
Ta(°C)
Control current
on/off point
Icont(mA)
Vcont(V)
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
20.0
18.0
16.0
14.0
12.0
10.0
8.0
6.0
4.0
2.0
0.0
-50
Vcont=4.0V
Vcont(ONpoint)
Vcont=3.0V
Vcont=2.0V
Vcont(OFFpoint)
0.8
0.7
0.6
-50
Vcont=1.8V
-25
0
25
50
75
100
-25
0
25
50
75
100
Ta(°C)
Ta(°C)
Output current
Dropout voltae
IoutMAX(mA)
550
Vdrop(mV)
Vin=1.9/2.0/2.1/2.2/2.3/2.4/2.5V
350
Io=300mA
500
300
250
200
150
100
50
450
Vin=2.2V
Io=200mA
400
350
Io=150mA
Vin=2.1V
300
Io=100mA
Io=50mA
Vin=2.0V
250
200
150
Vin=1.9V
0
-50
-25
-50
-25
0
25
50
75
100
0
25
50
75
100
Ta(°C)
Ta(°C)
GC3-H026H
Page 19
TK112xxCM/U
Output voltage vs. Temperature characteristics
Vout=1.5V
DVout(mV)
Vout=2.0V
DVout(mV)
20
15
10
5
20
15
10
5
0
0
-5
-5
-10
-15
-20
-25
-30
-10
-15
-20
-25
-30
-35
-35
-50
-25
0
25
50
100
75
-50
-25
0
25
Ta(°C)
50
75
100
Ta(°C)
DVout(mV)
Vout=3.0V
Vout=4.0V
DVout(mV)
20
15
10
5
20
15
10
5
0
0
-5
-5
-10
-15
-20
-25
-30
-35
-10
-15
-20
-25
-30
-35
-50
-25
0
25
Ta(℃)
50
75
100
-50
-25
0
25
Ta(℃)
50
75
100
Vout=5.0V
DVout(mV),
20
15
10
5
0
-5
-10
-15
-20
-25
-30
-35
-50
-25
0
25
Ta(℃)
50
75
100
GC3-H026H
Page 20
TK112xxCM/U
Layout PCB Material : Glass epoxy t=0.8mm
SOT-23L SOT-89
Derating Curve
Pd(mW)
Vout
Vout
Vin
SOT-89
Vin
900
-7.2mW/°C
SOT-23- L
-4.8mW/°C
600
on/off
Please do derating with 4mW/°C at
Pd=500mW and 25°C or more. Thermal
resistance is (qja=250°C / W).
Please do derating with 7.2mW/°C at
Pd=900mW and 25°C or more. Thermal
resistance is ( qja=138°C / W)
0
50°C
150
100
25
0
(85)°C
The package loss is limited at the temperature that the internal temperature sensor works (about 150°C). Therefore, the
package loss is assumed to be an internal limitation. There is no heat radiation characteristic of the package unit assumed
because of the small size. Heat is carried away by the device being installed on the PCB. This value changes by the
material and the copper pattern etc. of the PCB. The losses are approximately 600mW (SOT-23L) : 900mW(SOT-89).
Enduring these losses becomes possible in a lot of applications operating at 25°C.
Determining the thermal resistance when mounted on a PCB.
The operating chip junction temperature is shown by
Ta (Ta=25°C)
150 = qja ´ pd + 25
qja ´ Pd = 125
Tj=qja ´ Pd + Ta.
Tj of the IC is set to about 150°C.
Pd is a value when the overtemperature sensor is made to work.
qja = (125/ pd) (°C / mW)
Pd is easily obtained.
Mount the IC on the PCB. Pd becomes Vin ´ Iin when the output side of the IC is short-circuited.
The input current decreases gradually by the temperature rise of the chip.
Please use the value when the current is steady (thermal equilibrium is reached).
In many cases, heat radiation is good, and Pd becomes 600mW/900 mW or more.
Pd is obtained by the normal temperature in degrees. The current that can be used at the highest operating temperature is
obtained from the graph of the figure below.
Procedure (Do when PCB mounted).
Pd(mW)
1. Pd is obtained (Vin ´ Iin when the output side is short-circuited).
2
2. Pd is plotted on the horizontal line to 25°C.
Pd
3. Pd is connected with the point of 150°C by the straight line
(bold face line).
4. A line is extended vertically above the point of use temperature in the design. For
DPd
5
instance, 75°C is assumed (broken line).
3
5. Extend the intersection of the derating curve (fat solid line) and (broken line) to the
left and read the Pd value.
6. DPd ¸ (Vinmax - Vout)=Iout (at 75°C)
4
50 (75)
100
25
150°C
0
The maximum current that can be used at the highest operating temperature is:
Iout @ DPd ¸ (Vinmax - Vout).
GC3-H026H
Page 21
TK112xxCM/U
Application hint
On/Off Control
It is recommended to turn the regulator Off when the circuit following
VsatO
the regulator is non-operating. A design with little electric power loss
can be implemented. We recommend the use of the on/off control of the
regulator without using a high side switch to provide an output from the
regulator. A highly accurate output voltage with low voltage drop is
obtained.
REG
On/Off Cont.
Because the control current is small, it is possible to control it directly by CMOS logic.
The PULLDOWN resistance (500KW) is built into the control terminal.
The noise and the ripple rejection characteristics depend on the capacitance on the Vref terminal.
The ripple rejection characteristic of the low frequency region improves by increasing the capacitance of Cnp.
A standard value is Cnp=0.068mF. Increase Cnp in a design with important output noise and ripple rejection
requirements. The IC will not be damaged if the capacitor value is increased.
The on/off switching speed changes depending on the Np terminal capacitance. The switching speed slows when
the capacitance is large.
Parallel connected ON/OFF Control
5V
3.3V
2.0V
The figure at the left illustrates multiple regulators being controlled
by a single On/Off control signal. There is a possibility of
overheating because the power loss of the low voltage side IC
(TK11220C) is large. The series resistor (R) is put in the input
line of the low output voltage regulator in order to prevent over-
dissipation. The voltage dropped across the resistor reduces the
large input-to-output voltage across the regulator, reducing the
power dissipation in the device. When the thermal sensor works, a
TK11250C
Vin
TK11233C
TK11220C
R
decrease of the output voltage, oscillation, etc.
observed.
may be
On/Off Cont.
GC3-H026H
Page 22
TK112xxCM/U
Definition of Terms
The output voltage tables are specified with a test voltage of Vin=Output Voltage (Typ.) + 1V.
Output Voltage ( Vout )
The output voltage is specified with (Vin = Output Voltage (Typ.) + 1V) and output current (Iout=5mA).
Maximum Output Current ( Iout Max )
The output current is measured when the output voltage decreases to (VoutTyp. x 0.9). The input voltage is (Output
Voltage (Typ.) + 1V). The maximum output current is measured in a short time so that it is not influenced by
the temperature of the chip. The output current decreases with low voltage operation.
Please refer to the "Low input voltage-output current" graph for 2.1V or less.
Dropout Voltage ( Vdrop )
The dropout voltage is the difference between the input voltage and the output voltage at which point the regulator
starts to fall out of regulation. Below this value, the output voltage will fall as the input voltage is reduced. It is
dependent upon the load current (Iout) and the junction temperature (Tj). The input voltage is gradually
decreased below the test voltage. It is the voltage difference between the input and the output when the output
voltage decreases by 100mV.
Line Regulation ( Lin Reg )
Line regulation is the ability of the regulator to maintain a constant output voltage as the input voltage changes. The
line regulation is specified as the input voltage is changed from (Output Voltage (Typ.) + 1V) to (Output
Voltage (Typ.) + 6V). This measurement is not influenced by the temperature of the IC and is measured in a
short time.
Load Regulation ( Load Reg )
Load regulation is the ability of the regulator to maintain a constant output voltage as the load current changes. The
input voltage is set to (Output Voltage (Typ.) + 1V). The output voltage change is measured as the load current
changes from to 5 to 100mA and from 5 to 200mA. This measurement is not influenced by the temperature of
the IC and is measured in a short time.
Quiescent Current ( Iq )
The quiescent current is the current which flows through the ground terminal under no load conditions (Io=0mA).
Ripple Rejection ( RR )
Ripple rejection is the ability of the regulator to attenuate the ripple content of the input voltage at the output. It
is specified with the input voltage = ( Vout + 1.5V ) , Iout=10mA, CL=1.0mF and Cnp=0.01mF An Alternating
Current source of (f=1kHz and 200mVRMS) is superimposed to the power-supply voltage. Ripple rejection is
the ratio of the ripple content of the output vs. the input and is expressed in dB. It is typically about 80dB at
1KHz. The ripple rejection improves when the value of the capacitor at the noise bypass terminal in the circuit
is large. However, the on/off response worsens.
Standby Current.( Istandby )
Standby current is the current which flows into the regulator when the control voltage is made 0 volts. It is
measured with an input voltage of 8V.
GC3-H026H
Page 23
TK112xxCM/U
PROTECTION CIRCUITS
Thermal Sensor
The thermal sensor protects the device if the junction temperature exceeds the safe value (Tj=150 °C). This
temperature rise can be caused by extreme heat, excessive power dissipation caused by large output voltage drops,
or excessive output current. The regulator will shut off when the temperature exceeds the safe value. As the
junction temperature decreases, the regulator will begin to operate again. Under sustained fault conditions, the
regulator output will oscillate as the device turns off then resets. Please improve heat radiation or lower the input
electric power. When heat radiation is poor, the forecast package loss is not obtained.
* In the case that the power, Vin ´ Ishort(Short Circuit Current), becomes more than twice of the maximum rating of its power dissipation in a moment,
there is a possibility that the IC is destroyed before internal thermal protection works.
Reverse Bias Current
The reverse bias protection prevents excessive current from flowing through the
Vin
Vout
IC even if the input voltage becomes 0 with voltage impressed on the
GND
output side (input short-circuited to GND). The maximum reverse bias
voltage is 6V.
· ESD .......... MM 200pF
0W
200V Min
HBM 100pF 1.5kW 2000V Min
GC3-H026H
Page 24
TK112xxCM/U
Outline ; PCB ; Stamps
SOT23L-6
Unit : mm
General tolerance : ± 0.2
GC3-H026H
Page 25
TK112xxCM/U
SOT89-5
0.7Max
0.7Max
1.0
± 0.2
4.5
1.6
0.49Max
0.49Max 0.49Max
LOT No
45°
TYPE CODE
VOLTAGE
CODE
R:112XX
2.0
0.49Max
0.49Max
e
e
1.5
1.5
0.54Max
Recommended Mount Pad
2.5± 0.2
1.0
1.0
e
3.0
1.5
e
1.5
+0.5
e'
-0.3
4.5
Unit : mm
General tolerance : ± 0.2
GC3-H026H
Page 26
TK112xxCM/U
1. NOTES
2. OFFICES
Please be sure that you carefully discuss your planned
purchase with our office if you intend to use the products in
this application manual under conditions where particularly
extreme standards of reliability are required, or if you intend
to use products for applications other than those listed in this
application manual.
Power drive products for automobile, ship or aircraft
transport systems; steering and navigation systems,
emergency signal communications systems, and any
system other than those mentioned above which include
electronic sensors, measuring, or display devices, and
which could cause major damage to life, limb or property
if misused or failure to function.
If you need more information on this product and other
ASAHI KASEI TOKO POWER DEVICES products, please
contact us.
ASAHI KASEI TOKO POWER DEVICES CORPORATION
13-45, Senzui 3-chome, Asaka-shi, Saitama-ken
351-0024, Japan
TEL: +81-48-460-1870 (Marketing Department)
FAX: +81-48-460-1600
Medical devices for measuring blood pressure, pulse,
etc., treatment units such as coronary pacemakers and heat
treatment units, and devices such as artificial organs and
artificial limb systems which augment physiological
functions.
Electrical instruments, equipment or systems used in
disaster or crime prevention.
Semiconductors, by nature, may fail or malfunction in
spite of our devotion to improve product quality and
reliability. We urge you to take every possible precaution
against physical injuries, fire or other damages which may
cause failure of our semiconductor products by taking
appropriate measures, including a reasonable safety margin,
malfunction preventive practices and fire-proofing when
designing your products.
This application manual is effective from Aug. 2010. Note
that the contents are subject to change or discontinuation
without notice. When placing orders, please confirm
specifications and delivery condition in writing.
ASAHI KASEI TOKO POWER DEVICES is not
responsible for any problems nor for any infringement of
third party patents or any other intellectual property rights
that may arise from the use or method of use of the products
listed in this application manual. Moreover, this application
manual does not signify that ASAHI KASEI TOKO
POWER DEVICES agrees implicitly or explicitly to license
any patent rights or other intellectual property rights which it
holds.
None of the ozone depleting substances(ODS) under the
Montreal Protocol are used in our manufacturing process.
YOUR DISTRIBUTOR
GC3-H026H
Page 27
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