October 1999 TOKO, Inc.
Page 1
TK112xxB
FEATURES
s
High Voltage Precision at
2.0%
s
Active High 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 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
BLOCK DIAGRAM
TK112xxB
GND
CONTROL
VOUT
VIN
NOISE BYPASS
GND
VOUT
GND
NOISE BYPASS
GND
CONTROL
VIN
DESCRIPTION
The TK112xxB is a low dropout linear regulator with a built-
in electronic switch. The internal switch can be controlled
by TTL or CMOS logic levels. The device is in the "on" state
when the control pin is pulled to a logic high 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
TK112xxB 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 shut down circuitry
limits the junction temperature to below 150
C. The load
current is internally monitored and the device will shut
down in the presence of a short circuit or overcurrent
condition at the output.
The TK112xxB is available in either a 6-pin SOT-23L or a
5-pin SOT-89 surface mount package.
ORDERING INFORMATION
TAPE/REEL CODE
L: Tape Left (SOT-23L)
B: Tape Left (SOT-89)
TEMP. CODE:
C: -30 to +80 C
I: -40 to +85 C
Tape/Reel Code
TK112 B
Voltage Code
Package Code
PACKAGE CODE:
M: SOT-23L
U: SOT-89
NOTE 1:
1.3 V to 1.9 V available
in SOT-23L package only.
NOTE 2:
1.3 V to 2.4 V available
in C temperature code
(-30 to +80 C) only.
VOLTAGE CODE
13 = 1.3 V
33 = 3.3 V
14 = 1.4 V
34 = 3.4 V
15 = 1.5 V
35 = 3.5 V
16 = 1.6 V
36 = 3.6 V
17 = 1.7 V
37 = 3.7 V
18 = 1.8 V
38 = 3.8 V
19 = 1.9 V
39 = 3.9 V
20 = 2.0 V
40 = 4.0 V
21 = 2.1 V
41 = 4.1 V
22 = 2.2 V
42 = 4.2 V
23 = 2.3 V
43 = 4.3 V
24 = 2.4 V
44 = 4.4 V
25 = 2.5 V
45 = 4.5 V
26 = 2.6 V
46 = 4.6 V
27 = 2.7 V
47 = 4.7 V
28 = 2.8 V
48 = 4.8 V
29 = 2.9 V
49 = 4.9 V
30 = 3.0 V
50 = 5.0 V
31 = 3.1 V
55 = 5.5 V
32 = 3.2 V
80 = 8.0 V
Temp. Code
20P
NOISE
BYPASS
VIN
VOUT
THERMAL
PROTECTION
BANDGAP
REFERENCE
CONTROL
GND
SOT-23L
SOT-89
VOLTAGE REGULATOR WITH ON/OFF SWITCH
Page 2
October 1999 TOKO, Inc.
TK112xxB
Supply Voltage ......................................................... 16 V
Power Dissipation SOT-23L (Note1) .................. 600 mW
Power Dissipation SOT-89 (Note1) .................... 900 mW
Reverse Bias ............................................................ 10 V
Storage Temperature Range ................... -55 to +150
C
Operating Temperature Range ................... -30 to +80
C
Operating Voltage Range ............................ 1.8 to 14.5 V
Junction Temperature ........................................... 150
C
ABSOLUTE MAXIMUM RATINGS TK112xxBC (V
OUT
2.0 V)
TK112xxBC ELECTRICAL CHARACTERISTICS (V
OUT
2.0 V)
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 packages for operation above 25
C.
Note 2: Refer to "Definition of Terms."
Note 3: Ripple rejection and noise voltage are affected by the value and characteristics of the capacitor used.
Note 4: 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.
L
O
B
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6
.
0
V
October 1999 TOKO, Inc.
Page 3
TK112xxB
Supply Voltage ......................................................... 16 V
Power Dissipation SOT-23L (Note1) .................. 600 mW
Power Dissipation SOT-89 (Note1) .................... 900 mW
Reverse Bias .............................................................. 7 V
Storage Temperature Range ................... -55 to +150
C
Operating Temperature Range ................... -30 to +80
C
Operating Voltage Range ............................ 1.8 to 14.5 V
Junction Temperature ........................................... 150
C
ABSOLUTE MAXIMUM RATINGS TK1121xBC (V
OUT
1.9 V)
TK1121xBC ELECTRICAL CHARACTERISTICS (V
OUT
1.9 V)
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 packages for operation above 25
C.
Note 2: Refer to "Definition of Terms."
Note 3: Ripple rejection and noise voltage are affected by the value and characteristics of the capacitor used.
Note 4: 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.
L
O
B
M
Y
S
R
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6
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Page 4
October 1999 TOKO, Inc.
TK112xxB
TK112xxBI ELECTRICAL CHARACTERISTICS (V
OUT
2.5 V)
Test conditions: T
A
= -40 to 85
C, unless otherwise specified.
Supply Voltage ......................................................... 16 V
Power Dissipation SOT-23L (Note1) .................. 600 mW
Power Dissipation SOT-89 (Note1) .................... 900 mW
Reverse Bias ............................................................ 10 V
Storage Temperature Range ................... -55 to +150
C
Operating Temperature Range ................... -40 to +85
C
Operating Voltage Range ............................ 1.8 to 14.5 V
Junction Temperature ........................................... 150
C
ABSOLUTE MAXIMUM RATINGS TK112xxBI (V
OUT
2.5 V)
L
O
B
M
Y
S
R
E
T
E
M
A
R
A
P
S
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o
N
(
,
A
m
0
5
1
o
t
1
=
3
2
0
1
1
V
m
V
P
O
R
D
e
g
a
t
l
o
V
t
u
o
p
o
r
D
I
T
U
O
)
2
e
t
o
N
(
,
A
m
0
6
=
2
1
.
0
3
2
.
0
V
I
T
U
O
)
2
e
t
o
N
(
,
A
m
0
5
1
=
6
2
.
0
0
4
.
0
V
I
T
U
O
t
n
e
r
r
u
C
t
u
p
t
u
O
s
u
o
u
n
i
t
n
o
C
)
2
e
t
o
N
(
0
5
1
A
m
I
)
E
S
L
U
P
(
T
U
O
t
n
e
r
r
u
C
t
u
p
t
u
O
e
s
l
u
P
e
l
c
y
c
y
t
u
d
%
5
.
2
1
,
e
s
l
u
p
s
m
5
0
8
1
A
m
R
R
n
o
i
t
c
e
j
e
R
e
l
p
p
i
R
C
,
z
H
0
0
4
=
f
L
C
,
F
0
1
=
N
,
F
1
.
0
=
V
N
I
V
=
T
U
O
I
,
V
5
.
1
+
T
U
O
,
A
m
0
3
=
V
E
L
P
P
I
R
)
3
e
t
o
N
(
,
s
m
r
V
m
0
0
1
=
0
6
B
d
V
O
N
e
g
a
t
l
o
V
e
s
i
o
N
t
u
p
t
u
O
z
H
0
1
f
C
,
z
H
k
0
8
L
,
F
0
1
=
C
N
V
,
F
1
.
0
=
N
C
V
=
T
U
O
,
V
5
.
1
+
I
T
U
O
)
4
,
3
s
e
t
o
N
(
,
A
m
0
6
=
0
3
s
m
r
V
V
f
e
r
l
a
n
i
m
r
e
T
s
s
a
p
y
B
e
s
i
o
N
e
g
a
t
l
o
V
5
2
.
1
V
V
T
U
O
/
T
t
n
e
i
c
i
f
f
e
o
C
e
r
u
t
a
r
e
p
m
e
T
I
T
U
O
A
m
0
1
=
0
4
C
/
m
p
p
S
N
O
I
T
A
C
I
F
I
C
E
P
S
L
A
N
I
M
R
E
T
L
O
R
T
N
O
C
I
T
N
O
C
t
n
e
r
r
u
C
l
o
r
t
n
o
C
V
T
N
O
C
N
O
t
u
p
t
u
O
,
V
8
.
1
=
2
1
0
4
A
V
)
N
O
(
T
N
O
C
N
O
e
g
a
t
l
o
V
l
o
r
t
n
o
C
N
O
t
u
p
t
u
O
0
.
2
V
V
)
F
F
O
(
T
N
O
C
F
F
O
e
g
a
t
l
o
V
l
o
r
t
n
o
C
F
F
O
t
u
p
t
u
O
5
.
0
V
Note 1: When mounted as recommended. Derate at 4.8 mw/
C for SOT-23L and 6.4 mw/
C for SOT-89 packages for operation above 25
C.
Note 2: Refer to "Definition of Terms."
Note 3: Ripple rejection and noise voltage are affected by the value and characteristics of the capacitor used.
Note 4: 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.
Gen Note: For Line Regulation, typ. and max. is changed to V
OUT
> 5.6 V.
October 1999 TOKO, Inc.
Page 5
TK112xxB
Output
Voltage
V
OUT(MIN)
V
OUT(MAX)
Test
Voltage
Code
Voltage
1.3 V
13
1.240 V
1.36 V
2.4 V
1.4 V
14
1.340 V
1.46 V
2.4 V
1.5 V
15
1.440 V
1.560 V
2.4 V
1.6 V
16
1.540 V
1.660 V
2.4 V
1.7 V
17
1.640 V
1.760 V
2.4 V
1.8 V
18
1.740 V
1.860 V
2.4 V
1.9 V
19
1.804 V
1.960 V
2.4 V
Output
Voltage
V
OUT(MIN)
V
OUT(MAX)
Test
Voltage
Code
Voltage
2.0 V
20
1.940 V
2.060 V
3.0 V
2.1 V
21
2.040 V
2.160 V
3.1 V
2.2 V
22
2.140 V
2.260 V
3.2 V
2.3 V
23
2.240 V
2.360 V
3.3 V
2.4 V
24
2.340 V
2.460 V
3.4 V
2.5 V
25
2.440 V
2.560 V
3.5 V
2.6 V
26
2.540 V
2.660 V
3.6 V
2.7 V
27
2.640 V
2.760 V
3.7 V
2.8 V
28
2.740 V
2.860 V
3.8 V
2.9 V
29
2.840 V
2.960 V
3.9 V
3.0 V
30
2.940 V
3.060 V
4.0 V
3.1 V
31
3.040 V
3.160 V
4.1 V
3.2 V
32
3.140 V
3.260 V
4.2 V
3.3 V
33
3.240 V
3.360 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
OUT(MIN)
V
OUT(MAX)
Test
Voltage
Code
Voltage
3.7 V
37
3.630 V
3.770 V
4.7 V
3.8 V
38
3.725 V
3.875 V
4.8 V
3.9 V
39
3.825 V
3.975 V
4.9 V
4.0 V
40
3.920 V
4.080 V
5.0 V
4.1 V
41
4.020 V
4.180 V
5.1 V
4.2 V
42
4.120 V
4.280 V
5.2 V
4.3 V
43
4.215 V
4.385 V
5.3 V
4.4 V
44
4.315 V
4.485 V
5.4 V
4.5 V
45
4.410 V
4.590 V
5.5 V
4.6 V
46
4.510 V
4.690 V
5.6 V
4.7 V
47
4.605 V
4.795 V
5.7 V
4.8 V
48
4.705 V
4.895 V
5.8 V
4.9 V
49
4.800 V
5.000 V
5.9 V
5.0 V
50
4.900 V
5.100 V
6.0 V
5.5 V
55
5.390 V
5.610 V
6.5 V
8.0 V
80
7.840 V
8.160 V
9.0 V
TK112xxBMC ELECTRICAL CHARACTERISTICS TABLE 1
Test conditions: T
A
= 25
C, I
OUT
= 30 mA, unless otherwise specified.
TK112xxBC ELECTRICAL CHARACTERISTICS TABLE 2
Test conditions: T
A
= 25
C, I
OUT
= 30 mA, unless otherwise specified.
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