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
The TK113xxB is available in either 6 pin SOT-23L or 5 pin
SOT-89-5 surface mount packages.
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
µVrms.
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
µA
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.
TK113XXB
20Q
CONTROL 1
GND
2
6 V
IN
5
4
GND
V
OUT
NOISE
3
BYPASS
NOISE
BYPASS
1
6
5
4
VOUT
GND
VIN
GND 2
CONTROL 3
ORDERING INFORMATION
TK113
Voltage Code
B
C
Tape/Reel Code
Package Code
V
IN
S
S
S
S
S
S
BLOCK DIAGRAM
V
OUT
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
PACKAGE CODE
M: SOT-23L
U: SOT-89-5
TAPE/REEL CODE
L : Tape Left
(SOT-23L)
B : Tape Bottom
(SOT-89-5)
CONTROL
S
THERMAL
PROTECTION
S
–
S
S
S
+
–
S
+
S
S
S
S
BANDGAP
REFERENCE
S
S
S
GND
NOISE BYPASS
May, 1997 TOKO, Inc.
Page 1
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
Test conditions: T
A
= 25
°C,
unless otherwise specified.
SYMBOL
I
Q
I
STBY
V
O
Line Reg
Load Reg
PARAMETER
Quiescent Current
Standby Current
Output Voltage
Line Regulation
Load Regulation
TEST CONDITIONS
I
OUT
= 0 mA, Except I
CONT
V
IN
= 8 V, at output off
I
OUT
= 30 mA
V
O
≤
5.5 V (Note 2)
I
OUT
= 1 mA
→
60 mA (Note 3)
I
OUT
= 1 mA
→
100 mA (Note 3)
V
DROP
I
OUT
RR
Dropout Voltage
Continuous Output Current
I
OUT
= 60 mA
I
OUT
when V
OUT
drops 0.3 V
from V
O
(typ) (Note 3)
Ripple Rejection
f = 400 Hz, C
L
= 10
µF,
C
N
= 0.1
µF
V
IN
= V
OUT
+ 1.5 V, I
OUT
= 30 mA,
(Note 4)
V
NO
Output Noise Voltage
10 Hz
≤
f
≤
80 KHz,
V
CN
= V
OUT
+ 1.5 V, I
OUT
= 60 mA,
CL = 10
µF,
CN = 0.1
µF,
(Notes 4,5)
I
OUT (PULSE)
Pulse Output Current
V
REF
Noise Bypass Terminal Voltage
5 ms pulse, 12.5% duty cycle
1.25
200
mA
V
30
µVrms
55
dB
See table 1
3.0
6
18
0.12
20
30
90
0.24
150
MIN
TYP
170
MAX
250
0.1
UNITS
µA
µA
V
mV
mV
mV
V
mA
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
Control Terminal Specification
I
CONT
V
CONT
∆V
O
/T
A
Note 1:
Control Current
Control Voltage
Output on, V
CONT
= 1.8 V
Output on
Output off
V
IN
-1.8
12
35
µA
V
V
IN
-0.6
0.09
V
mV/°C
Output Voltage Temperature
Coefficient
I
OUT
= 10 mA
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.
Page 2
May, 1997 TOKO, Inc.
TK113xxB
TK113xxB ELECTRICAL CHARACTERISTICS (Table 1)
Output
Voltage
2.0 V
2.1 V
2.2 V
2.3 V
2.4 V
2.5 V
2.6 V
2.7 V
2.8 V
2.9 V
3.0 V
3.1 V
3.2 V
3.3 V
3.4 V
3.5 V
3.6 V
Voltage
Code
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
V
IN
Max
1.94 V
2.04 V
2.14 V
2.24 V
2.34 V
2.44 V
2.54 V
2.64 V
2.74 V
2.84 V
2.94 V
3.04 V
3.14 V
3.24 V
3.335 V
3.435 V
3.535 V
V
OUT
Max
2.06 V
2.16 V
2.26 V
2.36 V
2.46 V
2.56 V
2.66 V
2.76 V
2.86 V
2.96 V
3.06 V
3.16 V
3.26 V
3.36 V
3.465 V
3.565 V
3.665 V
Test
Voltage
3.0 V
3.1 V
3.2 V
3.3 V
3.4 V
3.5 V
3.6 V
3.7 V
3.8 V
3.9 V
4.0 V
4.1 V
4.2 V
4.3 V
4.4 V
4.5 V
4.6 V
Output
Voltage
3.7
3.8
3.9
4.0
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
5.0
5.5
6.0
8.0
Voltage
Code
37
38
39
40
41
42
43
44
45
46
47
48
49
50
55
60
80
V
IN
Max
3.630
3.725
3.825
3.920
4.020
4.120
4.215
4.315
4.410
4.510
4.605
4.705
4.800
4.900
5.390
5.880
7.840
V
OUT
Max
3.770
3.875
3.975
4.080
4.180
4.280
4.385
4.485
4.590
4.690
4.795
4.895
5.000
5.100
5.610
6.120
8.160
Test
Voltage
4.7
4.8
4.9
5.0
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
6.0
6.5
7.0
9.0
May, 1997 TOKO, Inc.
Page 3
TK113xx B
TEST CIRCUITS
SOT-23L
I
IN
V
IN
SOT-89-5
S
+
_
A
S
S
V
O
I
O
V
O
S
S
V
IN
I
IN
S
+
1
µF
V
IN
6
5
4
V
OUT
+
2.2
µF
V
IN
V
V
I
O
+
2.2
µF
6
5
4
+
A
1.0
µF
+
_
V
IN
1
V
CONT
S
2
3
Noise Bypass
0.1
µF
NOISE
BYPASS 1
0.1
µF
2
3 CONT
I
CONT
A
S
CONT
A
I
CONT
+
_
V
Transient Response
V
IN
CONT
113XXB
Rs
C
1 µF
V
OUT
•Connect pin 5 to
ground for heat sink
V
+
_
V
CONT
+
P
0.1 µF
+
C = 10 µF
L
to 0.22
TYPICAL PERFORMANCE CHARACTERISTICS
T
A
= 25
°C
unless otherwise specified
OUTPUT VOLTAGE RESPONSE
(OFF→ ON)
CL = 2.2 µF
Cn = 0.01 µF
LOAD REGULATION
VO (5 mV/Div)
SHORT CIRCUIT CURRENT
5
4
VOUT TYP
VO (V)
0
50
IOUT (mA)
LINE REGULATION
50 mV/Div
100
3
2
1
Cn = 0.1 µF
ILOAD = 30 mA
0
T=0
200
400
600
800
0
TIME (µS)
OUTPUT VOLTAGE vs. INPUT
VOLTAGE
VOUT (25mV/Div)
VO TYP
IO = 0 mA
150
IO (mA)
OUTPUT CURRENT vs.
DROPOUT VOLTAGE
300
0
-100
-200
-300
-400
IO = 30 mA
IO = 50 mA
IO = 90 mA
0
VIN = VOUT
VIN (V)
(50 mV/Div)
0
10
VIN (V)
20
VDROP (mV)
VO TYP
0
100
IO (mA)
200
Page 4
May, 1997 TOKO, Inc.
TK113xxB
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
T
A
= 25
°C
unless otherwise specified
OUTPUT CURRENT vs.
QUIESCENT CURRENT
10
500
400
1.9 V
REVERSE BIAS CURRENT
(VIN = 0 V)
100
VIN vs. QUIESCENT CURRENT
(OFF MODE)
QUIES. CURRENT (mA)
8
IREV (µA)
6
4
2
0
0
100
IO (mA)
200
300
2.0 V
200
100
0
0
10
VREV (V)
20
1.3 V
IQ (pA)
50
0
0
10
VCC (V)
20
VIN vs. QUIESCENT CURRENT
(ON MODE)
2
IO = 0 mA
1.0
VIN vs. QUIESCENT CURRENT
(ON MODE)
IO = 0 mA
VO
2
QUIESCENT CURRENT
mA
1
3V
2V
5V
4V
mA
VO =
VO = 1.9 V
0.5
IQ (mA)
IO = 60 mA
1
IO = 30 mA
0
0
VO = 1.3 to 1.8 V
5
VIN (V )
DROPOUT VOLTAGE
10
0
0
VO = 1.3 to 1.8 V
2.5
VIN (V)
CONTROL CURRENT
5
0
-50
0
TA (°C)
VCONT (VOUT, ON POINT)
2.0
RC = 0 V
50
100
500
400
50
40
ICONT(µA)
(mV)
300
200
100
IO = 30 mA
0
-50
0
TA (°C)
50
100
IO = 60 mA
30
20
10
VCONT = 1.8 V
0
-50
0
TA (°C)
50
100
VCONT(V)
IO = 150 mA
VCONT = 5 V
1.0
0
-50
0
TA (°C)
50
100
May, 1997 TOKO, Inc.
Page 5
Talking
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