TK11223CUILN [TOKO]
Fixed Positive LDO Regulator, 2.3V, 0.32V Dropout, PDSO5, PLASTIC, SOT-89, 5 PIN;
| 型号： | TK11223CUILN |
| 厂家： | 
TOKO, INC |
| 描述： | Fixed Positive LDO Regulator, 2.3V, 0.32V Dropout, PDSO5, PLASTIC, SOT-89, 5 PIN 光电二极管 |
| 文件： | 总22页 (文件大小：545K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
IC DATA SHEET
LDO REGULATOR WITH ON/OFF SWITCH
TK112xxC
MEETING YOUR NEEDS
TOKO Inc.
IC Data Sheet
TK112xxC
Features
• Very low Dropout Voltage. (Vdrop=105mV at 100mA)
• Very good stability (CL=0.1µF 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 (0.1μA 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 (65µA).
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 0.1µF 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-H026
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TOKO Inc.
IC Data Sheet
TK112xxC
ORDERING INFORMATION
C M
TK１１2
L
(Special Sorting)
Voltage Code
EX 3.3V : 33
5.0V : 50
N : Noise
Package Code
Tape/Reel Code
M : SOT-23L
U : SOT89
Operating Temp. Range
C:-30 80°C
I :-40 85°C
Boldface type applies Standard Voltage.
V CODE
V CODE
V CODE
V CODE
Ｖ OUT
Ｖ OUT
Ｖ OUT
Ｖ OUT
1.5 v
1.6
1.7
1.8
1.9
15
16
17
18
19
2.5 v
2.6
2.7
25
26
27
3.5 v
3.6
3.7
35
36
37
4.5 v
4.6
4.7
4.8
45
46
47
48
49
2.8
2.9
3.0
3.1
3.2
3.3
3.4
28
29
30
31
32
33
34
3.8
3.9
38
39
4.9
2.0
2.1
2.2
2.3
2.4
20
21
22
23
24
4.0
4.1
4.2
4.3
4.4
40
41
42
43
44
5.0
50
Please contact your authorized Toko representative for voltage availability
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TOKO Inc.
IC Data Sheet
TK112xxC
C rank device
Absolute maximum ratings
Parameters
Supply voltage
Reverse bias
Np pin voltage
Control pin voltage
Storage temperature Range
Operating voltage range
Operating temperature range
Short circuit current
Symbol
Vcc Max
VrMax
VnpMax
VcontMax
Tstg
Vop
Top
Ishort
Limiting Values
−0.4 16
Unit
V
V
V
V
°C
V
°C
mA
−0.4
−0.4
6
5
−0.4 16
−55 150
1.8 14.5
−30 80
500
Power dissipation Internally limited
M : 600mW mounted (reference) U : 900mW mounted (reference)
5 pin mini flat package
Electrical characteristics
Test Condition
Vtest=VoutTyp+1V Vcont=1.8V (Ta=25°C)
Parameters
Output voltage
Symbol
Vout
Min
Typ
Max Unit
Condition
Iout = 5mA
± 1.5% or ± 50mV
Line regulation
LinReg
0
6
mV
%
∆V=5V Vtest=VoutTyp+1V---- VoutTyp +6V
Load regulation
LoaReg
0.5
1.0
1.6
0.8
1.5
2.4
1.1
2.2
3.7
1.8
3.4
5.3
5mA < Iout < 100mA
5mA < Iout < 200mA
5mA < Iout < 300mA
5mA < Iout < 100mA
5mA < Iout < 200mA
5mA < Iout < 300mA
2.5V ≤ vo ≤ 5.0V
%
%
1.5V ≤ Vo ≤ 2.4V LoaReg
%
%
%
Dropout voltage
Vdrop
105
170
235
170
270
370
mV Iout=100mA
mV Iout=200mA
mV
Because of VopMin=1.8V
mA
Iout=300mA (2.4V ≤ Vout)
1.5V ≤ Vout ≤ 2.0V : No regulation
IoutMax
Maximum output
current
380
480
(VoutTyp. × 0.9)
Quiescent current
Standby current
Ground pin current
Iq
65
0
1.8
90
0.1
3.0
µA Iout=0mA Excluding Icont
µA Vcc=8V , Vcont ≤ 0.15V Off state
mA Iout=100mA
Istandby
Ignd
Control terminal Specification (Pull down resistor = 500k) Note 1
Control current
Control voltage
Icont
Vcont
5
10
Vcont=1.8V on state
on state
µA
V
1.6
0.6
V
off state
Np treminal Voltage
Vo
Vnp
Vo/Ta
Vno
1.28
V
Typ=35 ppm/°C
0.14 0.25 µV/√ Hz at1KHz
Reference Value
Reference Value
Out put noise
Note 1: The input current decreases to the pA level by connecting the control terminal to GND. (Off state). The
Pull-down resistor is 500kΩ.
General Note: Limits are guaranteed by production testing or correction techniques using Statistical Quality
Control (SQC) methods. Unless otherwise noted. Vtest=VoutTyp+1V ; IL=1mA (Tj=25°C) The
operation of −30°C
−80°C is guaranteed in the design by a usual inspection.
General Note: Exceeding the “Absolute Maximum Rating “ may damage the device
General Note: Connecting a capacitor to the noise bypass pin can decrease the output noise voltage
General Note: Output noise is 0.14-0.25 µV/√ Hz at 1KHz : 23 75µVrms at BW400-80kHz
General Note: The ripple rejection is 84dB at 400Hz and 80dB at 1kHz.
[CL=1.0µF,Cnp=0.01µF,Vnois=200mVRMS,Vin=VoutTyp+1.5v,Iout=10mA]
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TOKO Inc.
IC Data Sheet
TK112xxC
I Rank
Absolute Maximum Ratings are same as C Rank
Operating Temperature Range Top= −40 85°C
Operating Voltage Range Vop=2.1V 14.5V
Other items are same as C rank.
Boldface type applies over the full operating temperature range. (−40 85°C)
Vtest=VoutTyp+1V Iout=5mA
Min
Typ
Max
Parameters
Output Voltage
Line regulation
Symbol
Vout
LinReg
Unit
Condition
± 1.5% or ± 50mV (± 2.5% or ± 80mV)
Iout = 5mA
0
6
mV ∆V=5V
8
Load regulation
LoaReg
0.5
1.0
1.6
0.8
1.5
2.4
105
170
235
1.1
%
%
%
%
%
%
5mA < Iout < 100mA
5mA < Iout < 200mA
2.5V ≤ Vo ≤ 5.0V
1.3
2.2
2.8
3.7
5.3
1.8
2.0
3.4
5mA < Iout < 300mA
5mA < Iout < 100mA
5mA < Iout < 200mA
5mA < Iout < 300mA
1.5V ≤ Vo ≤ 2.4V LoaReg
4.1
5.3
6.5
170
200
270
320
370
440
Dropout voltage
Vdrop
mV Iout=100mA
mV Iout=200mA
mV Iout=300mA (2.4V ≤ Vout)
1.5V ≤ Vout ≤ 2.1V : No regulation
Because of VopMin=2.1V
Maximum output
current
Quiescent current
IoutMax
380
340
480
65
0
ｍA Vout= (VoutTyp. × 0.9)
Iq
90
100
0.1
0.5
3.0
µA Iout=0mA except Icont
µA Vcont ≤ 0.15V 0ff state
mA Iout=100ｍA
Standby current
GND pin current
Istandby
Ignd
1.8
3.6
Control terminal Specification (Pull down resistor =500k ) Note 1
Control current
Control voltage
Icont
5
10
12
µA Vcont=1.8V on state
Vcont
1.6
1.8
V
V
V
on state
off state
0. 6
0.35
Np terminal Voltage
Vo
Vnp
Vo/Ta
Vno
1.28
Typ=35 ppm/°C
0.14 0.25 µV/√ Hz at1KHz
Reference Value
Reference Value
Out put noise
Note 1: The input current decreases to the pA level by connecting the control terminal to GND. (Off state). The
Pull-down resistor is 500 kΩ.
General Note:
Limits are guaranteed by production testing or correction techniques using Statistical Quality
Control (SQC) methods. Unless otherwise noted. Vtest=VoutTyp+1V ; IL=1mA (Tj=25°C) The
operation of -30℃-80℃ is guaranteed in the design by a usual inspection.
General Note: Exceeding the “Absolute Maximum Rating “ may damage the device
General Note: Connecting a capacitor to the noise bypass pin can decrease the output noise voltage
General Note: Output noise is 0.14-0.25 µV/√Hz at 1KHz : 23 75µVrms at BW400-80kHz
General Note: The ripple rejection is 84dB at 400Hz and 80dB at 1kHz.
[CL=1.0µF,Cnp=0.01µF,Vnois=200mVRMS,Vin=VoutTyp+1.5v,Iout=10mA]
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TOKO Inc.
IC Data Sheet
TK112xxC
Pin Layout
Vout 5
4
Vin
GND
Vout
Vin
4
5
6
1
SOT89
SOT-23L
2
1
on/off control
3
Np(Vref)
2
3
On/off Control
Np(Vref)
GND
GND
Terminal 2 and 5 are connected internally.
Top view
Application
Iin
GND
Ａ
Vin
Vout
CL=0.22μF
（CL=1.0μF）
Ｖin
Ｖ
Cin=0.1μF
Iout
Ａ
Np
Cont.
GND
Icont
Vcont
Cnp=0.1μF
Note：The terminal connection reverses between SOT-23L and SOT89.
Block Diagram
Vout
Vin
Control Circuit
Cont.
Constant
Current
Source
Thermal &
Over Current Protect
Bandgap
Reference
500k
Np
GND
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TOKO Inc.
IC Data Sheet
Input /Output Capacitors
TK112xxC
Linear regulators require input and output capacitors in order to maintain the regulator's loop stability. If a 0.1μF
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=0.22μF(MLCC) Iout≧0.5mA.
Cin=0.22μF
0.1μF
The input capacitor is necessary when the battery is discharged, the power
supply impedance increases, or the line distance to the power supply is long.
CL=0.22μF
0.1μF
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 0.1μF (Vout≧2.5V). If it is 0.1μF 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
10
100
10
100
10
Stable Area
Stable Area
Stable Area
Stable Area
CL=0.1 uF
Stable Area
CL=0.068uF
CL=0.068uF
CL=0.068uF
CL=0.068uF
1
0.1
1
1
1
1
0.1
0.1
0.01
0.1
0.01
0.1
0.01
0.01
0.01
0.5
50
Iout [mA]
CL≧0.33uF All Stable
100
150
4.0
2.0
50
100
150
0.5
50
Iout [mA]
CL≧0.68uF All Stable
100
150
0.5
50
Iout [mA]
CL≧0.33uF All Stable
100
50
100
150
150
Iout [mA]
Iout [mA]
CL≧1.0uF All Stable
CL≧2.2uF 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 :CM05B104K10AB、CM05B224K10AB、CM105B104K16A、CM105B224K16A、CM21B225K10A
Murata
:GRM36B104K10、GRM42B104K10ꢀGRM39B104K25、GRM39B224K10、GRM39B105K6.3
Capacitance vs. Voltage
B Curve
Capacitance vs. Temperature
%
%
Generally, a ceramic capacitor has
both a temperature characteristic and
100
90
80
70
60
50
100
90
80
70
60
B Curve
a
voltage characteristic. Please
consider both characteristics when
selecting the part. The B curves are
the recommend characteristics.
F Curve
F Curve
50
2
4
6
8
10
0
-50 -25
0
25 50 75 100
Ta(℃)
Bias voltage（V）
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TOKO Inc.
IC Data Sheet
TK112xxC
Output noise
TK11230 Cnp vs. Noise Iout=30mA BPF=400Hz 80kHz
TK11230C Cnp vs Noise
TK112xxC Vout vs Noise
Noise（uVrms)
Iout=30mA BPF:400 80kHz
Noise
(uVrms)
300
Iout=30mA Cnp=10000pF CL=0.22uF（MLCC）
CL=MLCC
CL=0.22uF
CL=0.47uF
CL=1.0uF
CL=2.2uF
CL=10uF
BPF:400 80kHz
90
80
70
60
50
40
30
20
10
250
200
150
100
50
CL=Tantal
0
1
10
100
Cnp（ｐF）
1000
10000
100000
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
Vout(V)
TK11230C Iout vs Noise
TK11230C Iout vs. Noise
Noise(uVrms)
95
Noise(uVrms)
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=1.0uF
CL=2.2uF
CL=10uF
CL=Tantal
CL=MLCC
CL=2.2uF
CL=10uF
35
0
0
50
100
150
Iout(mA)
200
250
300
50
100
150
Iout(mA)
200
250
300
Increase Cnp to decrease the noise. The recommended Cnp capacitance is 6800pF(682) - 0.22μF(224).
The amount of noise increases with the higher output voltages.
Noise(μV/√Hz)
ꢀ
Noise Level(1/f)
10
Cnp=1000pF
1
0.1
TK11230CSꢀꢀꢀꢀCin=10μF Iout=10mA
CL=0.22μF（Ceramic)
Cnp=0.1μF
Cnp=0.01μF
0.01
10
100
Frequency
1k
10k
100k
Hz)
（
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TOKO Inc.
IC Data Sheet
TK112xxC
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
0.1μF
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
Ripple Rejection vs. Iout
Cnp=0.01μF
CL=0.22μF（Ceramic)
Vin=5.0V
R.R(dB)
0
R.R (dB)
0
Cin:None Vripple=100mVp-p Freq:1kHz
Cnp:0.01μF CL:0.22μF（Ceramic)
Iout:1,50,100,150,200,250,300mA
-10
-20
-30
-40
-50
-60
-70
-80
-90
-10
-20
-30
-40
-50
-60
-70
-80
-90
Vripple=500mVp-p
Freq=1kHz
Freq=400Hz
-100
-100
0
50
100
150
200
250
300
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)
Iout(mA)
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TOKO Inc.
IC Data Sheet
TK112xxC
TK112xxCMꢀTransient
・ON／OFF Transient
Vin=4.0V
Iout=30mA
112XX
CL
Cin=1.0μF
Cnp
0.01μF
GND
ꢀ
CL= VariableꢀCnp=0.001μF
CL= VariableꢀCnp=0.01μF
Vcont
ON
Vcont OFF ON
OFF
CL=
0.22μF
CL=
0.22μF
1.0μF
2.2μF
1.0μF ,
Vou
Vou
1.0V/div
1.0V/div
10μs/div
50μs/div
ꢀ
Cnp= VariableꢀCL=1μF
CL= Variable Cnp=0.01μFꢀIo=30mA
Vcont
ON
Vcont OFF ON
OFF
Cnp=
0.001μF
0.01μ
CL=
0.22μF
1.0μF
1.0V/div
250μs/div
Vou
Vou
0.1μF
2.2μF
1.0V/div
250μs/div
Ｔhe rise time of the regulator depends on CL and Cnp; the fall time depends on CL.
GC3-H026
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TOKO Inc.
・LOAD Transient
IC Data Sheet
TK112xxC
CL= VariableꢀCnp=0.01μF
33mA
33mA
Iout
3mA
3mA
Vin=4.0V
Iout=30mA
112XX
CL=1.0μF、 2.2uF
CL
Cin=1.0μF
Vout
Cnp
0.01μF
Vcont=2.0V
GND
CL=0.22μF
When the capacitor on the load side is increased, the load change becomes smaller.
Iout=0⇔30mA，3⇔33mA
Magnification
33mAꢀꢀ30mA
ꢀ3mAꢀꢀ0mA
ꢀ30mA ꢀ33mA
0mA ꢀ3mA
Iout
Iout
Iout=0⇔30mA
Iout=0⇒30mA
Iout=3⇒33mA
Vout
Vout
Iout=3 ⇔ 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.
・LineꢀTransient
Cnp= VariableꢀCL=1μF
CL= VariableꢀCnp=0.01μF
Δ１V
Δ１V
Cnp=0.001μF
Cnp=0.01μF
CL=0.22μF
CL=1.0μF
Cnp=0.1μF
CL=2.2μF
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TOKO Inc.
IC Data Sheet
TK112xxC
Line regulation
△Vout(mV)
Load regulation
△Vout(mV)
15
10
１０
5
0
-１０
0
Vo=2.0V
-5
－２０
Vo1.5V
３Ｖ
-10
-15
-20
-25
-30
－３０
－４０
Vo2.0V
Vo3.0V
Vo4.0V
Vo5.0V
Vo=5.0V
－５０
－６０
－７０
－８０
-35
0
5
10
15
20
0
50
100
150
200
250
300
Vin(V)
Iout(mA)
Regulation point
Vdrop
△Vout(mV)
Vdrop(mV)
0
100
Iout=0mA,50mA,100mA,150mA,200mA,250mA,300mA
-50
-100
-150
-200
-250
-300
-350
-400
-450
0.0
Iout=0mA
-100
-200
-300
Iout=300mA
-500
0
100
100
200 300
Iout(mA)
400
500
△Vin(mV)
Vcont vs.ꢀIcont
Icont(uA)
20
15
10
5
Vout
Icont
0
0.0
1.0
2.0 3.0
Vcont(V)
4.0
5.0
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TOKO Inc.
IC Data Sheet
TK112xxC
IoutMax at low Vop
TK11215 TK11224
Short circuit current
IoutMax(mA
Vout(V)
6.0
500
450
400
350
300
250
200
150
100
50
5.0
4.0
3.0
2.0
1.0
0.0
0
1.7
1.8
1.9
2.0 2.1
Vop（V)
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
0
0
1.E-12
0
2
4
6
8
10 12 14 16 18 20
Vin(V)
50
100
150
200
250
300
Iout(mA)
Reverse bias current
Irev(uA)
60
50
40
30
20
10
Vout＝3V
Vout＝2V
Vout＝4V
Vout＝5V
0
0
1
2
3
4
5 6
Vrev(V)
7
8
9 10
GC3-H026
Page 13
TOKO Inc.
IC Data Sheet
TK112xxC
Temperature Characteristics
(Ta: Ambient temperature)
GND current
Max Iout
Iout (mA)
500
Ignd(mA)
16.0
480
14.0
12.0
10.0
8.0
Iout=300mA
460
440
420
Io=200mA
Io=100mA
400
6.0
380
4.0
Io=150mA
Io=50mA
Vout=（VoutTyp.×0.9
360
2.0
340
-50
0.0
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Ta(℃)
Ta(℃)
Control current
on/off point
Icont(uA)
Vcont(V)
1.6
20.0
18.0
16.0
14.0
12.0
10.0
8.0
1.5
1.4
Vcont=4.0V
Vcont(ONpoint)
1.3
1.2
1.1
Vcont=3.0V
Vcont=2.0V
Vcont(OFFpoint)
1.0
0.9
6.0
0.8
4.0
0.7
Vcont=1.8V
2.0
0.6
0.0
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Ta(℃)
Ta(℃)
Output current
Dropout voltae
Vdrop(mV)
IoutMAX(mA)
550
Vin=1.9/2.0/2.1/2.2/2.3/2.4/2.5V
350
Io=300mA
500
450
300
250
200
150
100
50
Io=200mA
Vin=2.2V
400
350
300
250
200
150
Io=150mA
Io=100m
Vin=2.1V
Vin=2.0V
Io=50mA
Vin=1.9V
0
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Ta(℃)
Ta(℃)
GC3-H026
Page 14
TOKO Inc.
IC Data Sheet
TK112xxC
Output voltage vs. Temperature characteristics
Vout=1.5V
△Vout(mV)
△Vout(mV)
Vout=2.0V
20
15
20
15
10
10
5
5
0
0
-5
-5
-10
-15
-20
-25
-30
-35
-10
-15
-20
-25
-30
-35
-50
-25
0
25
Ta(℃)
50
100
75
-50
-25
0
25
Ta(℃)
50
75
100
△Vout(mV)
△Vout(mV)
Vout=3.0V
Vout=4.0V
20
15
20
15
10
5
10
5
0
-5
0
-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(mV),
20
Vout=5.0V
15
10
5
0
-5
-10
-15
-20
-25
-30
-35
-50
-25
0
25
50
75
100
Ta(℃)
GC3-H026
Page 15
TOKO Inc.
IC Data Sheet
TK112xxC
layoutꢀ ꢀꢀPCB Material：Glass epoxy t=0.8mm
SOT-23L SOT-89
Derating Curve
Ｐd(mＷ)
Vout
Vout
Vin
SOT-89
-7.2mW/℃
Vin
900
SOT-23- L
-4.8mW/℃
600
On/off
on/off
Please do derating with 4mW/ ℃ at
Pd=500mW and 25℃ or more. Thermal
resistance is (θja=250℃/W).
Please do derating with 7.2mW/℃ at
Pd=900mW and 25 ℃ or more.
Thermal resistance is（θja＝138℃/W
０
50℃
150
100
(85)℃
０
25
The package loss is limited at the temperature that the internal temperature sensor works (about 150℃).
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℃.
Determining the thermal resistance when mounted on a PCB.
Ta（Ｔa=25℃）
The operating chip junction temperature is shown by
150＝θja×pd＋25
Tj=θja×Pd+Ta.
Tj of the IC is set to about 150℃.
Pd is a value when the overtemperature sensor is made to work.
θja×Ｐd＝125
θja＝（125／pd）(℃／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).
1. Pd is obtained (Vin×Iin when the output side is short-circuited).
Ｐd(mＷ)
2
2. Pd is plotted on the horizontal line to 25℃.
Pd
3. Pd is connected with the point of 150℃ by the straight line
(bold face line).
4. A line is extended vertically above the point of use temperature in the
ＤPd
5
design. For instance, 75℃ is assumed (broken line).
5. Extend the intersection of the derating curve (fat solid line) and (broken
line) to the left and read the Pd value.
3
6. DPd÷(Vinmax―Vout)=Iout (at 75℃)
4
50 (75)
100
150℃
25
０
The maximum current that can be used at the highest operating temperature is:
Iout≒ DPd÷(Vinmax―Vout).
GC3-H026
Page 16
TOKO Inc.
IC Data Sheet
TK112xxC
Applicationꢀhint
On/offꢀControl
It is recommended to turn the regulator Off when the
circuit following 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.
Vsat
REG
On/Off Cont.
Because the control current is small, it is possible to control it directly by CMOS logic.
The PULLDOWN resistance (500KΩ) 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=0.068μF. 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.
ParallelꢀconnectedꢀON/OFF Control
5V
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,
TK11250C
Ｖin
3.3V
2.0V
TK11233C
TK11220C
R
On/Off Cont.
Current boost
a decrease of the output voltage, oscillation, etc.
be observed.
may
For current boost applications, use the products below. A low voltage drop, high current regulator
can be easily made.
TK714xxꢀꢀOnly the PNP transistor for the current boost is external.
TK732XXꢀ（For Iout=10A Max regulator)
Built-in Short circuit protection: a constant current can be set by an external
resistor.
GC3-H026
Page 17
TOKO Inc.
IC Data Sheet
TK112xxC
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.×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=1.0μF and
Cnp=0.01μF 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-H026
Page 18
TOKO Inc.
PROTECTION CIRCUITS
IC Data Sheet
TK112xxC
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.
Reverse Bias Current
The reverse bias protection prevents excessive current from flowing
Ｖin
Ｖout
through the IC even if the input voltage becomes 0 with
voltage impressed on the output side (input short-circuited to
GND). The maximum reverse bias voltage is 6V.
ＧＮＤ
・ＥＳＤ..........MMꢀ200pF 0Ω ꢀꢀ200V Min
HBMꢀ100pF 1.5kΩ 2000V Min
GC3-H026
Page 19
TOKO Inc.
ꢀꢀOutline；PCB；Stamps
IC Data Sheet
TK112xxC
+0.15
-0.05
0.4
0.6
0.1
Ｍ
Type
ꢀCode
Voltage
Code
ＲＸＸ
+0.15
-0.05
5-0.32
0.1
Ｍ
e
e
e
0.95
e
0.95
0.95 0.95
Recommended Mount Pad
+0.3
-0.1
±0.2
2.2
3.5
(3.4)
±0.2
0.4
±0.3
3.3
0.1
Molded Resin with Body
Lead Frame
Treatment
：Epoxy Resin
：Copper Alloy
：Solder Plating(5～15μｍ)
：Ink or Laser
Unit ：mm
General tolerance ：±0.2
Marking Method
Weight
：0.023g
Country of origin
：Japan or Korea
V CODE
V CODE
V CODE
V CODE
Ｖ OUT
Ｖ OUT
Ｖ OUT
Ｖ OUT
1.5 v
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 v
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 v
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 v
4.6
4.7
4.8
4.9
5.0
45
46
47
48
49
50
The output voltage table indicates the standard value when manufactured.
Please contact your authorized Toko representative for voltage availability
GC3-H026
Page 20
TOKO Inc.
IC Data Sheet
TK112xxC
SOT89
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
±0.2
2.5
1.0
1.0
e
3.0
1.5
e
1.5
+0.5
ꢀe′
-0.3
4.5
Molded Resin with Body
Lead Frame
Treatment
Marking Method
Weight
：Epoxy Resin
：Copper Alloy
：Solder Plating(5～15μｍ)
：Ink or Laser
：0.053 g
Unit ：mm
General tolerance ：±0.2
Country of origin
：Japan
V CODE
V CODE
V CODE
V CODE
Ｖ OUT
Ｖ OUT
Ｖ OUT
Ｖ OUT
1.5 v
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 v
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 v
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 v
4.6
4.7
4.8
4.9
5.0
45
46
47
48
49
50
The output voltage table indicates the standard value when manufactured.
Please contact your authorized Toko representative for voltage availability
GC3-H026
Page 21
TOKO Inc.
IC Data Sheet
TK112xxC
NOTE
Please be sure that you carefully discuss your planned purchase with our office if you intend to use the
products in this data sheet 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 data sheet.
z 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.
z 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.
z 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 data sheet is effective from Aug. 2001. Note that the contents are subject to change or
discontinuation without notice. When placing orders, please confirm specifications and delivery
condition in writing.
TOKO 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
data sheet. Moreover, this data sheet does not signify that TOKO agrees implicitly or explicitly to
license any patent rights or other intellectual property rights which it holds.
None of ozone depleting substances(ODS) under the Montreal Protocol is used in manufacturing
process of us.
If you need more information on this product and other TOKO products, please contact us.
OFFICE ꢀꢀꢀ TOKO Inc. Headquarters
1-17, Higashi-yukigaya 2-chome, Ohta-ku, Tokyo,145-8585, Japan
TEL: +81.3.3727.1161
FAX: +81.3.3727.1176 or +81.3.3727.1169
Web site: http://www.toko.co.jp/
TOKO America
TOKO Singapore
Web site: http://www.toko.com/
TOKO Europe
Web site: http://www.toko.com.sg/
TOKO Seoul
Web site: http://www.tokoeurope.com/
TOKO Hong Kong
Web site: http://www.toko.co.kr/
TOKO Manila
Web site: http://www.toko.com.hk/
Web site: http://www.toko.com.ph/
TOKO Taiwan
TOKO Brazil
Web site: http://www.tokohc.com.tw/
Web site: http://www.toko.com.br/
YOUR DISTRIBUTOR
MEETING YOUR NEEDS
TO BUILD THE QUALITY RELIED BY COSTOMERS
GC3-H026
Page 22
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