May, 1997 TOKO, Inc.
Page 1
TK113xxB
VOLTAGE REGULATOR WITH ON/OFF SWITCH
FEATURES
s
High Voltage Precision at
2.0%
s
Active Low On/Off Control
s
Very Low Dropout Voltage 80 mV at 30 mA
s
Very Low Noise
s
Very Small SOT-23L or SOT-89-5 Surface Mount
Packages
s
Internal Thermal Shutdown
s
Short Circuit Protection
APPLICATIONS
s
Battery Powered Systems
s
Cellular Telephones
s
Pagers
s
Personal Communications Equipment
s
Portable Instrumentation
s
Portable Consumer Equipment
s
Radio Control Systems
s
Toys
s
Low Voltage Systems
TK113 B
Voltage Code
Package Code
Tape/Reel Code
PACKAGE CODE
M: SOT-23L
U: SOT-89-5
ORDERING INFORMATION
VOLTAGE CODE
20 = 2.0 V
21 = 2.1 V
22 = 2.2 V
23 = 2.3 V
24 = 2.4 V
25 = 2.5 V
26 = 2.6 V
27 = 2.7 V
28 = 2.8 V
29 = 2.9 V
30 = 3.0 V
31 = 3.1 V
32 = 3.2 V
33 = 3.3 V
34 = 3.4 V
35 = 3.5 V
36 = 3.6 V
37 = 3.7 V
38 = 3.8 V
39 = 3.9 V
40 = 4.0 V
41 = 4.1 V
42 = 4.2 V
43 = 4.3 V
44 = 4.4 V
45 = 4.5 V
46 = 4.6 V
47 = 4.7 V
48 = 4.8 V
49 = 4.9 V
50 = 5.0 V
55 = 5.5 V
60 = 6.0 V
80 = 8.0 V
C
TAPE/REEL CODE
L : Tape Left
(SOT-23L)
B : Tape Bottom
(SOT-89-5)
BLOCK DIAGRAM
S
S
S
S
S
S
S
S
S
S
V
OUT
+
BANDGAP
REFERENCE
THERMAL
PROTECTION
+
S
S
S
V
IN
CONTROL
S
S
GND
S
S
S
S
NOISE BYPASS
TK113XXB
20Q
1
3
CONTROL
GND
6
4
V
IN
V
OUT
2
5
GND
NOISE
BYPASS
1
3
6
4
2
5
VOUT
GND
NOISE
BYPASS
GND
CONTROL
VIN
DESCRIPTION
The TK113xxB is a low dropout linear regulator with a built-
in electronic switch. The device is in the ON state when the
control pin is pulled to a low level. An external capacitor can
be connected to the noise bypass pin to lower the output
noise level to 30
Vrms.
An internal PNP pass transistor is used to achieve a low
dropout voltage of 80 mV (typ.) at 30 mA load current. The
TK113xxB has a very low quiescent current of 170
A at no
load and 1 mA with a 30 mA load. The standby current is
typically 100 nA. The internal thermal shutdown circuitry
limits the junction temperature to below 150
C. The load
current is internally monitored and the device will shutdown
in the presence of a short circuit or overcurrent condition at
the output.
The TK113xxB is available in either 6 pin SOT-23L or 5 pin
SOT-89-5 surface mount packages.
Page 2
May, 1997 TOKO, Inc.
TK113xx B
ABSOLUTE MAXIMUM RATINGS
Supply Voltage ......................................................... 16 V
Output Current .................................................... 260 mA
Power Dissipation ............................................... (Note 1)
SOT-23L ......................................................... 600 mW
SOT-89-5 ....................................................... 900 mW
Reverse Bias ............................................................ 10 V
Storage Temperature Range ................... -55 to +150
C
Operating Temperature Range ...................-30 to +80
C
Voltage Range ............................................ 1.8 to 14.5 V
Junction Temperature ........................................... 150
C
TK113XXB ELECTRICAL CHARACTERISTICS
Test conditions: T
A
= 25
C, unless otherwise specified.
Note 1:
When mounted as recommended. Derate at 4.8 mW/
C for SOT-23L and 6.4 mW/
C for SOT-89-5 packages when ambient
temperatures are over 25
C.
Note 2:
For Line Regulation V
O
> 5.6 V, Typ and Max values are 15 and 40 mV.
Note 3: Refer to Definition of Terms.
Note 4: Ripple Rejection and noise voltage are affected by the value and characteristics of the capacitor used.
Note 5: Output noise voltage can be reduced by connecting a capacitor to a noise pass terminal.
Gen. Note: Parameters with min. or max. values are 100% tested at T
A
= 25
C.
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
I
Q
Quiescent Current I
OUT
= 0 mA, Except I
CONT
170
250
A
I
STBY
Standby Current V
IN
= 8 V, at output off
0.1
A
V
O
Output Voltage I
OUT
= 30 mA
See table 1
V
Line Reg
Line Regulation V
O
5.5 V (Note 2)
3.0
20
mV
Load Reg
Load Regulation I
OUT
= 1 mA
60 mA (Note 3)
6
30
mV
I
OUT
= 1 mA
100 mA (Note 3)
18
90
mV
V
DROP
Dropout Voltage I
OUT
= 60 mA
0.12
0.24
V
I
OUT
Continuous Output Current I
OUT
when V
OUT
drops 0.3 V
150
mA
from V
O
(typ) (Note 3)
RR
Ripple Rejection f = 400 Hz, C
L
= 10
F, C
N
= 0.1
F
55
dB
V
IN
= V
OUT
+ 1.5 V, I
OUT
= 30 mA,
(Note 4)
V
NO
Output Noise Voltage 10 Hz
f
80 KHz,
30
Vrms
V
CN
= V
OUT
+ 1.5 V, I
OUT
= 60 mA,
CL = 10
F, CN = 0.1
F, (Notes 4,5)
I
OUT (PULSE)
Pulse Output Current 5 ms pulse, 12.5% duty cycle
200
mA
V
REF
Noise Bypass Terminal Voltage
1.25
V
Control Terminal Specification
I
CONT
Control Current Output on, V
CONT
= 1.8 V
12
35
A
V
CONT
Control Voltage Output on
V
IN
-1.8
V
Output off
V
IN
-0.6
V
V
O
/T
A
Output Voltage Temperature I
OUT
= 10 mA
0.09
mV/
C
Coefficient
May, 1997 TOKO, Inc.
Page 3
TK113xxB
TK113xxB ELECTRICAL CHARACTERISTICS (Table 1)
Output
Voltage
V
IN
Max
V
OUT
Max
Test
Voltage
Code
Voltage
2.0 V
20
1.94 V
2.06 V
3.0 V
2.1 V
21
2.04 V
2.16 V
3.1 V
2.2 V
22
2.14 V
2.26 V
3.2 V
2.3 V
23
2.24 V
2.36 V
3.3 V
2.4 V
24
2.34 V
2.46 V
3.4 V
2.5 V
25
2.44 V
2.56 V
3.5 V
2.6 V
26
2.54 V
2.66 V
3.6 V
2.7 V
27
2.64 V
2.76 V
3.7 V
2.8 V
28
2.74 V
2.86 V
3.8 V
2.9 V
29
2.84 V
2.96 V
3.9 V
3.0 V
30
2.94 V
3.06 V
4.0 V
3.1 V
31
3.04 V
3.16 V
4.1 V
3.2 V
32
3.14 V
3.26 V
4.2 V
3.3 V
33
3.24 V
3.36 V
4.3 V
3.4 V
34
3.335 V
3.465 V
4.4 V
3.5 V
35
3.435 V
3.565 V
4.5 V
3.6 V
36
3.535 V
3.665 V
4.6 V
Output
Voltage
V
IN
Max
V
OUT
Max
Test
Voltage
Code
Voltage
3.7
37
3.630
3.770
4.7
3.8
38
3.725
3.875
4.8
3.9
39
3.825
3.975
4.9
4.0
40
3.920
4.080
5.0
4.1
41
4.020
4.180
5.1
4.2
42
4.120
4.280
5.2
4.3
43
4.215
4.385
5.3
4.4
44
4.315
4.485
5.4
4.5
45
4.410
4.590
5.5
4.6
46
4.510
4.690
5.6
4.7
47
4.605
4.795
5.7
4.8
48
4.705
4.895
5.8
4.9
49
4.800
5.000
5.9
5.0
50
4.900
5.100
6.0
5.5
55
5.390
5.610
6.5
6.0
60
5.880
6.120
7.0
8.0
80
7.840
8.160
9.0
Page 4
May, 1997 TOKO, Inc.
TK113xx B
TYPICAL PERFORMANCE CHARACTERISTICS
TEST CIRCUITS
SOT-23L
SOT-89-5
T
A
= 25
C unless otherwise specified
1
4
5
6
2
3
S
V
IN
V
A
A
V
S
S
S
V
O
I
O
V
IN
V
OUT
1
F
2.2
F
I
CONT
CONT
+
+
_
+
_
0.1
F
Noise Bypass
+
I
IN
V
CONT
Connect pin 5 to
ground for heat sink
Transient Response
S
V
A
A
S
S
S
+
+
_
+
_
+
1
4
5
6
2
3
V
IN
I
O
V
IN
V
O
1.0
F
2.2
F
I
CONT
CONT
NOISE
BYPASS
I
IN
V
V
IN
V
CONT
0.1
F
OUTPUT VOLTAGE RESPONSE
(OFF
ON)
T=0
200
400
600
800
CL = 2.2 F
Cn = 0.01 F
Cn = 0.1 F
ILOAD = 30 mA
TIME (S)
LOAD REGULATION
0
50
100
IOUT (mA)
V
OUT
TYP
VO (5 mV/Div)
SHORT CIRCUIT CURRENT
0
300
IO (mA)
0
V
O
(V)
1
2
3
4
5
150
OUTPUT VOLTAGE vs. INPUT
VOLTAGE
0
VIN = VOUT
VO TYP
VOUT (25mV/Div)
VIN (V)
(50 mV/Div)
IO = 0 mA
IO = 30 mA
IO = 50 mA
IO = 90 mA
LINE REGULATION
0
20
VIN (V)
VO TYP
50 mV/Div
10
OUTPUT CURRENT vs.
DROPOUT VOLTAGE
0
200
IO (mA)
V
DROP
(mV)
-400
-300
-200
-100
0
100
113XXB
V
IN
CONT
+
V
OUT
+
Rs
1 F
C
P
0.1 F
C
L
= 10 F
to 0.22
May, 1997 TOKO, Inc.
Page 5
TK113xxB
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
T
A
= 25
C unless otherwise specified
OUTPUT CURRENT vs.
QUIESCENT CURRENT
0
200
IO (mA)
0
QUIES. CURRENT (mA)
2
4
6
8
10
100
VIN vs. QUIESCENT CURRENT
(OFF MODE)
0
20
VCC (V)
0
I Q
(pA)
50
100
10
QUIESCENT CURRENT
-50
100
0
I Q
(mA)
2
1
0
50
IO = 60 mA
IO = 30 mA
TA (C)
DROPOUT VOLTAGE
-50
100
0
(mV)
100
0
50
IO = 60 mA
IO = 30 mA
200
300
400
500
IO = 150 mA
TA (C)
CONTROL CURRENT
-50
100
0
I CONT
(
A)
10
0
50
VCONT = 5 V
VCONT = 1.8 V
20
30
40
50
TA (C)
VCONT (VOUT, ON POINT)
-50
100
0
V
CONT
(V)
0
50
RC = 0 V
1.0
2.0
TA (C)
VIN vs. QUIESCENT CURRENT
(ON MODE)
0
5
0
mA
IO = 0 mA
0.5
1.0
2.5
VO = 1.3 to 1.8 V
VO
VO = 1.9 V
VIN (V)
REVERSE BIAS CURRENT
(VIN = 0 V)
0
20
VREV (V)
0
I REV
(
A)
100
200
300
400
500
10
2.0 V
1.3 V
1.9 V
VIN vs. QUIESCENT CURRENT
(ON MODE)
0
10
0
mA
IO = 0 mA
1
2
5
VO = 1.3 to 1.8 V
VO =
VIN (V )
2 V
3 V
4 V
5 V
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