IC DATA SHEET
LDO REGULATOR WITH ON/OFF SWITCH
TK112xxC
MEETING YOUR NEEDS
TOKO Inc.
IC Data Sheet
Features
TK112xxC
•
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.
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TOKO Inc.
IC Data Sheet
TK112xxC
ORDERING INFORMATION
１１2
TK１１
TK
１１
2
Voltage Code
EX 3.3V : 33
5.0V : 50
Package Code
M
:
SOT-23L
U
:
SOT89
CM
L
(Special Sorting)
N
:
Noise
Tape/Reel Code
Operating Temp. Range
C:-30
∼
80°C
I :-40
∼
85°C
Boldface type
applies Standard Voltage.
Ｖ
OUT
1.5 v
1.6
1.7
1.8
1.9
V CODE
15
16
17
18
19
Ｖ
OUT
2.5 v
2.6
2.7
V CODE
25
26
27
Ｖ
OUT
3.5 v
3.6
3.7
V CODE
35
36
37
Ｖ
OUT
4.5 v
4.6
V CODE
45
46
4.7
4.8
4.9
47
48
49
2.0
2.1
2.2
2.3
2.4
20
2.8
2.9
3.0
28
29
30
3.8
3.9
38
39
4.0
40
5.0
50
21
3.1
31
4.1
41
22
4.2
42
3.2
32
23
4.3
43
3.3
33
24
3.4
34
4.4
44
Please contact your authorized Toko representative for voltage availability
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TOKO Inc.
Absolute maximum ratings
IC Data Sheet
C rank device
TK112xxC
Parameters
Symbol
Limiting Values
Unit
Supply voltage
Vcc Max
−0.4
∼
16
V
Reverse bias
VrMax
−0.4
∼
6
V
V
Np pin voltage
VnpMax
−0.4
∼
5
Control pin voltage
VcontMax
−0.4
∼
16
V
°C
Storage temperature Range
Tstg
−55
∼
150
Operating voltage range
Vop
1.8
∼
14.5
V
°C
Operating temperature range
Top
−30
∼
80
Short circuit current
Ishort
500
mA
Power dissipation Internally limited
M
:
600mW mounted (reference) U
:
900mW mounted (reference)
5 pin mini flat package
Electrical characteristics
Test Condition
Vtest=Vout
Typ
+1V
Min
Typ
Max Unit
±
1.5% or
±
50mV
0
6
mV
%
%
%
%
%
%
0.5
1.0
1.6
1.5V
≤
Vo
≤
2.4V
LoaReg
0.8
1.5
2.4
Dropout voltage
Vdrop
1.1
2.2
3.7
1.8
3.4
5.3
Vcont=1.8V
(Ta=25°C)
Parameters
Output voltage
Line regulation
Load regulation
2.5V
≤
vo
≤
5.0V
Symbol
Vout
LinReg
LoaReg
Condition
Iout = 5mA
∆V=5V
Vtest=Vout
Typ
+1V---- Vout
Typ
+6V
5mA
<
Iout
<
100mA
5mA
<
Iout
<
200mA
5mA
<
Iout
<
300mA
5mA
<
Iout
<
100mA
5mA
<
Iout
<
200mA
5mA
<
Iout
<
300mA
Maximum output
current
Quiescent current
Standby current
Ground pin current
105
170
170
270
235
370
1.5V
≤
Vout
≤
2.0V
:
No regulation
IoutMax
380
480
mV Iout=100mA
mV Iout=200mA
mV Iout=300mA (2.4V
≤
Vout)
Because of Vop
Min
=1.8V
mA
(
Vout
Typ
.
×
0.9)
Iq
65
90
µA
Iout=0mA Excluding Icont
Istandby
0
0.1
µA
Vcc=8V , Vcont
≤
0.15V Off state
Ignd
1.8
3.0
mA Iout=100mA
Control terminal Specification
(Pull down resistor = 500k) Note 1
Control current
Icont
5
10
µA
Vcont=1.8V on state
Control voltage
Vcont
1.6
V
on state
0.6
V
off state
Np treminal Voltage
Vnp
1.28
V
Vo
Vo/Ta
Typ=35 ppm/
°C
Reference Value
Out put noise
Vno
0.14
∼
0.25
µV/√
Hz at1KHz
Reference Value
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=Vout
Typ
+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=200mV
RMS
,Vin=Vout
Typ
+1.5v,Iout=10mA]
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TOKO Inc.
I Rank
IC Data Sheet
TK112xxC
Absolute Maximum Ratings are same as C Rank
Top=
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)
Symbol
Vout
LinReg
Min
Typ
0
Max
Vtest=Vout
Typ
+1V Iout=5mA
Parameters
Output Voltage
Line regulation
6
mV
∆V=5V
8
Load regulation
LoaReg
0.5
1.1
%
5mA
<
Iout
<
100mA
2.5V
≤
Vo
≤
5.0V
1.3
1.0
2.2
%
5mA
<
Iout
<
200mA
2.8
1.6
3.7
%
5mA
<
Iout
<
300mA
5.3
1.5V
≤
Vo
≤
2.4V
LoaReg
0.8
1.8
%
5mA
<
Iout
<
100mA
2.0
1.5
3.4
%
5mA
<
Iout
<
200mA
4.1
2.4
5.3
%
5mA
<
Iout
<
300mA
6.5
Dropout voltage
Vdrop
105
170
mV Iout=100mA
200
170
270
mV Iout=200mA
320
235
370
mV Iout=300mA (2.4V
≤
Vout)
440
Because of Vop
Min
=2.1V
1.5V
≤
Vout
≤
2.1V
:
No regulation
Maximum output
IoutMax
380
480
½A
Vout= (
Vout
Typ
.
×
0.9)
current
340
Quiescent current
Iq
65
90
µA
Iout=0mA except Icont
100
Standby current
Istandby
0
0.1
µA
Vcont
≤
0.15V 0ff state
0.5
GND pin current
Ignd
1.8
3.0
mA Iout=100½A
3.6
Control terminal Specification
(Pull down resistor =500k ) Note 1
Control current
Icont
5
10
µA
Vcont=1.8V on state
12
Control voltage
Vcont
1.6
V
on state
1.8
0. 6
V
off state
0.35
Np terminal Voltage
Vnp
1.28
V
Vo
Vo/Ta
Typ=35 ppm/
°C
Reference Value
Out put noise
Vno
0.14
∼
0.25
µV/√
Hz at1KHz
Reference Value
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=Vout
Typ
+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=200mV
RMS
,Vin=Vout
Typ
+1.5v,Iout=10mA]
Unit
Condition
±
1.5% or
±
50mV
(± 2.5% or
±
80mV)
Iout = 5mA
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电源技术
