TK112xxB
VOLTAGE REGULATOR WITH ON/OFF SWITCH
FEATURES
s
s
s
s
s
High Voltage Precision at
±
2.0%
Active High On/Off Control
Very Low Dropout Voltage 80 mV at 30 mA
Very Low Noise
Very Small SOT-23L or SOT-89 Surface Mount
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 TK112xxB is available in either a 6-pin SOT-23L or a
5-pin SOT-89 surface mount package.
TK112xxB
CONTROL
20P
Packages
s
Internal Thermal Shutdown
s
Short Circuit Protection
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
µVrms.
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
µA
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.
VIN
GND
GND
NOISE BYPASS
SOT-23L
VOUT
NOISE BYPASS
VOUT
GND
VIN
GND
ORDERING INFORMATION
SOT-89
CONTROL
TK112
Voltage Code
Package Code
B
Tape/Reel Code
Temp. Code
VIN
VOUT
BLOCK DIAGRAM
VOLTAGE CODE
13 = 1.3 V
14 = 1.4 V
15 = 1.5 V
16 = 1.6 V
17 = 1.7 V
18 = 1.8 V
19 = 1.9 V
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
80 = 8.0 V
PACKAGE CODE:
M: SOT-23L
U: SOT-89
NOTE 1:
1.3 V to 1.9 V available
in SOT-23L package only.
TAPE/REEL CODE
L: Tape Left (SOT-23L)
B: Tape Left (SOT-89)
THERMAL
PROTECTION
TEMP. CODE:
C: -30 to +80 C
I: -40 to +85 C
CONTROL
NOTE 2:
1.3 V to 2.4 V available
in C temperature code
(-30 to +80 C) only.
BANDGAP
REFERENCE
GND
NOISE
BYPASS
October 1999 TOKO, Inc.
Page 1
TK112xxB
ABSOLUTE MAXIMUM RATINGS TK112xxBC (V
OUT
≥
2.0 V)
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
TK112xxBC ELECTRICAL CHARACTERISTICS (V
OUT
≥
2.0 V)
Test conditions: T
A
= 25
°C,
unless otherwise specified.
SYMBOL
I
Q
I
STBY
V
OUT
Line Reg
PARAMETER
Quiescent Current
Standby Current
Output Voltage
Line Regulation
TEST CONDITIONS
I
OUT
= 0 mA, Excluding I
CONT
V
IN
= 8 V, Output OFF
I
OUT
= 30 mA
V
OUT
≤
5.5 V, (Note 2)
V
OUT
≥
5.6 V, (Note 2)
I
OUT
= 1 to 60 mA, (Note 2)
Load Reg Load Regulation
I
OUT
= 1 to 100 mA, (Note 2)
I
OUT
= 1 to 150 mA, (Note 2)
V
DROP
I
OUT
I
OUT(PULSE)
RR
Dropout Voltage
Continuous Output Current
Pulse Output Current
Ripple Rejection
I
OUT
= 60 mA, (Note 2)
I
OUT
= 150 mA, (Note 2)
(Note 2)
5 ms pulse, 12.5 % duty cycle
f = 400 Hz, C
L
= 10 µF, C
N
= 0.1 µF,
V
IN
= V
OUT
+ 1.5 V, I
OUT
= 30 mA,
V
RIPPLE
= 100 mVrms, (Note 3)
10 Hz
≤
f
≤
80 kHz, C
L
= 10 µF,
C
N
= 0.1 µF, V
CN
= V
OUT
+ 1.5 V,
I
OUT
= 60 mA, (Notes 3,4)
60
See Table 1
3.0
15
6
18
23
0.12
0.26
20
40
30
60
90
0.20
0.39
150
180
MIN
TYP
170
MAX
250
0.1
UNITS
µA
µA
V
mV
mV
mV
mV
mV
V
V
mA
mA
dB
V
NO
Output Noise Voltage
Noise Bypass Terminal
Voltage
Temperature Coefficient
30
µVrms
V
ref
∆V
OUT
/∆T
1.25
I
OUT
= 10 mA
40
V
ppm/° C
CONTROL TERMINAL SPECIFICATIONS
I
CONT
V
CONT(ON)
V
CONT(OFF)
Control Current
Control Voltage ON
Control Voltage OFF
V
CONT
= 1.8 V, Output ON
Output ON
Output OFF
1.8
0.6
12
35
µA
V
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.
Page 2
October 1999 TOKO, Inc.
TK112xxB
ABSOLUTE MAXIMUM RATINGS TK1121xBC (V
OUT
≤
1.9 V)
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
Test conditions: T
A
= 25
°C,
unless otherwise specified.
SYMBOL
I
Q
I
STBY
V
OUT
L in e R e g
PARAMETER
Quiescent Current
Standby Current
Output Voltage
Line Regulation
TK1121xBC ELECTRICAL CHARACTERISTICS (V
OUT
≤
1.9 V)
TEST CONDITIONS
I
OUT
= 0 mA, Excluding I
CONT
V
IN
= 8 V, Output OFF
I
OUT
= 30 mA
(Note 2)
I
OUT
= 1 to 60 mA, (Note 2)
I
OUT
= 1 to 100 mA, (Note 2)
I
OUT
I
OUT(PULSE)
Continuous Output Current
2.4 V
≤
V
IN
≤
2.6 V, (Note 2)
V
IN
≥
2.6 V, (Note 2)
5 ms pulse, V
IN
≥
2.6 V,
12.5 % duty cycle
f = 400 Hz, C
L
= 10 µF, C
N
= 0.1 µF,
V
IN
= V
OUT
+ 1.5 V, I
OUT
= 30 mA,
V
RIPPLE
= 100 mVrms, (Note 3)
10 Hz
≤
f
≤
80 kHz, C
L
= 10 µF,
C
N
= 0.1 µF, V
CN
= V
OUT
+ 1.5 V,
I
OUT
= 60 mA, (Notes 3,4)
55
See Table 2
3.0
6
18
20
30
60
130
150
180
MIN
TYP
170
MAX
250
0.1
UNITS
µA
µA
V
mV
mV
mV
mA
mA
mA
Load Reg Load Regulation
Pulse Output Current
RR
Ripple Rejection
dB
V
NO
Output Noise Voltage
Noise Bypass Terminal
Voltage
Temperature Coefficient
30
µVrms
V
ref
∆V
OUT
/∆T
1.25
I
OUT
= 10 mA
40
V
ppm/° C
CONTROL TERMINAL SPECIFICATIONS
I
CONT
V
CONT(ON)
V
CONT(OFF)
Control Current
Control Voltage ON
Control Voltage OFF
V
CONT
= 1.8 V, Output ON
Output ON
Output OFF
1.8
0.6
12
35
µA
V
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.
October 1999 TOKO, Inc.
Page 3
TK112xxB
ABSOLUTE MAXIMUM RATINGS TK112xxBI (V
OUT
≥
2.5 V)
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
TK112xxBI ELECTRICAL CHARACTERISTICS (V
OUT
≥
2.5 V)
Test conditions: T
A
= -40 to 85
°C,
unless otherwise specified.
SYMBOL
I
Q
I
STBY
V
OUT
Line Reg
PARAMETER
Quiescent Current
Standby Current
Output Voltage
Line Regulation
TEST CONDITIONS
I
OUT
= 0 mA, Excluding I
CONT
V
IN
= 8 V, Output OFF
I
OUT
= 30 mA
V
OUT
≤
5.5 V,(Note 2)
V
OUT
5.6 V,(Note 2)
See Table 3
3.0
15
6
18
23
0.12
0.26
25
40
40
80
110
0.23
0.40
150
180
60
MIN
TYP
170
MAX
300
0.2
UNITS
µA
µA
V
mV
mV
mV
mV
mV
V
V
mA
mA
dB
I
OUT
= 1 to 60 mA, (Note 2)
Load Reg Load Regulation
I
OUT
= 1 to 100 mA, (Note 2)
I
OUT
= 1 to 150 mA, (Note 2)
V
DROP
I
OUT
I
OUT(PULSE)
RR
Dropout Voltage
Continuous Output Current
Pulse Output Current
Ripple Rejection
I
OUT
= 60 mA, (Note 2)
I
OUT
= 150 mA, (Note 2)
(Note 2)
5 ms pulse, 12.5 % duty cycle
f = 400 Hz, C
L
= 10 µF, C
N
= 0.1 µF,
V
IN
= V
OUT
+ 1.5 V, I
OUT
= 30 mA,
V
RIPPLE
= 100 mVrms, (Note 3)
10 Hz
≤
f
≤
80 kHz, C
L
= 10 µF,
C
N
= 0.1 µF, V
CN
= V
OUT
+ 1.5 V,
I
OUT
= 60 mA, (Notes 3,4)
V
NO
Output Noise Voltage
Noise Bypass Terminal
Voltage
Temperature Coefficient
30
µVrms
V
ref
∆V
OUT
/∆T
1.25
I
OUT
= 10 mA
40
V
ppm/° C
CONTROL TERMINAL SPECIFICATIONS
I
CONT
V
CONT(ON)
V
CONT(OFF)
Control Current
Control Voltage ON
Control Voltage OFF
V
CONT
= 1.8 V, Output ON
Output ON
Output OFF
2.0
0.5
12
40
µA
V
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.
Page 4
October 1999 TOKO, Inc.
TK112xxB
TK112xxBMC ELECTRICAL CHARACTERISTICS TABLE 1
Test conditions: T
A
= 25
°C,
I
OUT
= 30 mA, unless otherwise specified.
Output
Voltage
1.3 V
1.4 V
1.5 V
1.6 V
1.7 V
1.8 V
1.9 V
Voltage
Code
13
14
15
16
17
18
19
V
OUT(MIN)
1.240 V
1.340 V
1.440 V
1.540 V
1.640 V
1.740 V
1.804 V
V
OUT(MAX)
1.36 V
1.46 V
1.560 V
1.660 V
1.760 V
1.860 V
1.960 V
Test
Voltage
2.4 V
2.4 V
2.4 V
2.4 V
2.4 V
2.4 V
2.4 V
TK112xxBC ELECTRICAL CHARACTERISTICS TABLE 2
Test conditions: T
A
= 25
°C,
I
OUT
= 30 mA, unless otherwise specified.
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
OUT(MIN)
1.940 V
2.040 V
2.140 V
2.240 V
2.340 V
2.440 V
2.540 V
2.640 V
2.740 V
2.840 V
2.940 V
3.040 V
3.140 V
3.240 V
3.335 V
3.435 V
3.535 V
V
OUT(MAX)
2.060 V
2.160 V
2.260 V
2.360 V
2.460 V
2.560 V
2.660 V
2.760 V
2.860 V
2.960 V
3.060 V
3.160 V
3.260 V
3.360 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 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
4.7 V
4.8 V
4.9 V
5.0 V
5.5 V
8.0 V
Voltage
Code
37
38
39
40
41
42
43
44
45
46
47
48
49
50
55
80
V
OUT(MIN)
3.630 V
3.725 V
3.825 V
3.920 V
4.020 V
4.120 V
4.215 V
4.315 V
4.410 V
4.510 V
4.605 V
4.705 V
4.800 V
4.900 V
5.390 V
7.840 V
V
OUT(MAX)
3.770 V
3.875 V
3.975 V
4.080 V
4.180 V
4.280 V
4.385 V
4.485 V
4.590 V
4.690 V
4.795 V
4.895 V
5.000 V
5.100 V
5.610 V
8.160 V
Test
Voltage
4.7 V
4.8 V
4.9 V
5.0 V
5.1 V
5.2 V
5.3 V
5.4 V
5.5 V
5.6 V
5.7 V
5.8 V
5.9 V
6.0 V
6.5 V
9.0 V
October 1999 TOKO, Inc.
Page 5
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