TK111xxS
VOLTAGE REGULATOR WITH ON/OFF SWITCH
FEATURES
s
High Voltage Precision at
±
2.0% or
±
60 mV
s
Active High On/Off Control
s
Very Low Dropout Voltage (85 mV at 30 mA)
s
Very Low Noise
s
Miniature Package (SOT-23-5)
s
Internal Thermal Shutdown
s
Short Circuit Protection
s
Excellent Ripple Rejection (70 dB @ 1 kHz)
s
Reverse Bias 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
DESCRIPTION
The TK111xxS 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 85 mV (typ.) at 30 mA load current. The
TK111xxS has a very low quiescent current of 140
µA
(typ.) at no load . The standby current is 100 nA maximum.
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 TK111xxS is available in a miniature SOT-23-5 surface
mount package.
20P
TK111xxS
CONTROL
GND
NOISE BYPASS
VIN
VOUT
BLOCK DIAGRAM
ORDERING INFORMATION
TK111
Voltage Code
S L
Tape/Reel Code
Temp. Code
Package Code
VIN
5
VOUT
THERMAL
PROTECTION
CONTROL
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
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
Note 1:
2.0 to 2.3 V
available in C
temperature code
(-30 to +80
°C)
only
TAPE/REEL CODE
L: Tape Left
PACKAGE CODE
S: SOT-23-5
C: -30 to +80
°C
I: -40 to +85
°C
BANDGAP
REFERENCE
GND
TEMP. CODE
NOISE
BYPASS
March 1999 TOKO, Inc.
Page 1
TK111xxS
ABSOLUTE MAXIMUM RATINGS TK111xxSCL
Supply Voltage ......................................................... 16 V
Control Terminal Voltage ......................................... 12 V
Noise Bypass Terminal Voltage ................................. 5 V
Power Dissipation (Note 1) ................................ 500 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 12 V
Junction Temperature ........................................... 150
°C
Lead Soldering Temperature (10 s) ...................... 235
°C
TK111xxSCL ELECTRICAL CHARACTERISTICS
Test conditions: V
IN
= V
OUT(TYP)
+ 1 V, 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
= 6 V, Output OFF, V
CONT
≤
0.15 V
I
OUT
= 10 mA, V
IN
= V
OUT(TYP)
+ 1 V
V
IN
= V
OUT(TYP)
+ 1 V to
V
OUT(TYP)
+ 6 V, (Note 2)
I
OUT
= 1 to 60 mA, (Note 2)
I
OUT
= 1 to 100 mA, (Note 2)
V
DROP
I
OUT
I
OUT(PULSE)
Dropout Voltage
Continuous Output Current
Pulse Output Current
I
OUT
= 60 mA, (Note 2)
(Note 2)
5 ms pulse, 12.5 % duty cycle, (Note
2)
f = 1 kHz, C
L
= 4.7 µF,
C
N
= 0.1 µF, V
IN
= V
OUT(TYP)
+ 2 V, V
R
=
200 mVrms, I
OUT
= 10 mA, (Notes
3,4)
400 Hz
≤
f
≤
80 kHz, C
L
= 4.7 µF,
C
N
= 0.01 µF, V
IN
= V
OUT(TYP)
+ 2 V,
I
OUT
= 10 mA, (Notes 3,4)
See Table 1
0.8
8
14
120
18
30
55
200
10 0
130
MIN
TYP
140
MAX
200
0.1
UNITS
µA
µA
V
mV
mV
mV
mV
mA
mA
Load Reg Load Regulation
RR
Ripple Rejection
70
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
25
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
1.5
0.35
1.2
4
µA
V
V
Note 1: Power dissipation is 500 mW when mounted as recommended. Derate at 4.0 mW/°C 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 the noise bypass terminal.
Gen. Note: Parameters with min. or max. values are 100% tested at T
A
= 25
°C.
Gen. Note: Exceeding the “Absolute Maximum Ratings” can damage the device.
Page 2
March 1999 TOKO, Inc.
TK111xxS
ABSOLUTE MAXIMUM RATINGS TK111xxSIL (V
OUT
≥
2.4 V)
Supply Voltage ......................................................... 15 V
Control Terminal Voltage ......................................... 12 V
Noise Bypass Terminal Voltage ................................. 5 V
Power Dissipation (Note 1) ................................ 500 mW
Reverse Bias ............................................................ 10 V
Storage Temperature Range ................... -55 to +150
°C
Operating Temperature Range ................... -40 to +85
°C
Operating Voltage Range ............................... 2.0 to 12 V
Junction Temperature ........................................... 150
°C
Lead Soldering Temperature (10 s) ...................... 235
°C
TK111xxSIL ELECTRICAL CHARACTERISTICS (V
OUT
≥
2.4 V)
Test conditions: V
IN
= V
OUT(TYP)
+ 1 V, 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
= 6 V, Output OFF, V
CONT
≤
0.15 V
I
OUT
= 10 mA, V
IN
= V
OUT(TYP)
+ 1 V
V
IN
= V
OUT(TYP)
+ 1 V to
V
OUT(TYP)
+ 6 V, (Note 2)
I
OUT
= 1 to 60 mA, (Note 2)
I
OUT
= 1 to 100 mA, (Note 2)
V
DROP
I
OUT
I
OUT(PULSE)
Dropout Voltage
Continuous Output Current
Pulse Output Current
I
OUT
= 60 mA, (Note 2)
(Note 2)
5 ms pulse, 12.5 % duty cycle, (Note
2)
f = 1 kHz, C
L
= 4.7 µF,
C
N
= 0.1 µF, V
IN
= V
OUT(TYP)
+ 2 V, V
R
=
200 mVrms, I
OUT
= 10 mA, (Notes
3,4)
400 Hz
≤
f
≤
80 kHz, C
L
= 4.7 µF,
C
N
= 0.01 µF, V
IN
= V
OUT(TYP)
+ 2 V,
I
OUT
= 10 mA, (Notes 3,4)
See Table 2
0.8
8
14
120
18
30
55
200
10 0
130
MIN
TYP
140
MAX
200
0.2
UNITS
µA
µA
V
mV
mV
mV
mV
mA
mA
Load Reg Load Regulation
RR
Ripple Rejection
70
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
25
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
1.5
0.35
1.2
6
µA
V
V
Note 1: Power dissipation is 500 mW when mounted as recommended. Derate at 4.0 mW/°C 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 the noise bypass terminal.
Gen. Note: Parameters with min. or max. values are 100% tested at T
A
= 25
°C.
Gen. Note: Exceeding the “Absolute Maximum Ratings” can damage the device.
March 1999 TOKO, Inc.
Page 3
TK111xxS
TK111xxSCL ELECTRICAL CHARACTERISTICS TABLE 1
Output
Voltage
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
4.7 V
4.8 V
4.9 V
5.0 V
Voltage
Code
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
V
OUT(MIN)
3.528 V
3.626 V
3.724 V
3.822 V
3.920 V
4.018 V
4.116 V
4.214 V
4.312 V
4.410 V
4.508 V
4.606 V
4.704 V
4.802 V
4.900 V
V
OUT(MAX)
3.672 V
3.774 V
3.876 V
3.978 V
4.080 V
4.182 V
4.284 V
4.386 V
4.488 V
4.590 V
4.692 V
4.794 V
4.896 V
4.988 V
5.100 V
Test
Voltage
4.6 V
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
Output
Voltage
2.0 V
2.1 V
2.2 V
2.3 V
2.4 V
2.5 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
Voltage
Code
20
21
22
23
24
25
27
28
29
30
31
32
33
34
35
V
OUT(MIN)
1.940 V
2.040 V
2.140 V
2.240 V
2.340 V
2.440 V
2.640 V
2.740 V
2.840 V
2.940 V
3.038 V
3.136 V
3.234 V
3.232 V
3.430 V
V
OUT(MAX)
2.060 V
2.160 V
2.260 V
2.360 V
2.460 V
2.560 V
2.760 V
2.860 V
2.960 V
3.060 V
3.162 V
3.264 V
3.366 V
3.468 V
3.570 V
Test
Voltage
3.0 V
3.1 V
3.2 V
3.3 V
3.4 V
3.5 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
Page 4
March 1999 TOKO, Inc.
TK111xxS
TK111xxSIL ELECTRICAL CHARACTERISTICS TABLE 2
Test Conditions: V
IN
= V
OUT(TYP)
+ 1 V, I
OUT
= 30 mA, unless otherwise specified.
Output
Voltage
2.4 V
2.5 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
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
Voltage
Code
24
25
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
Room Temp. Range (T
A
= 25
°C)
V
OUT(MIN)
V
OUT(MAX)
2.340 V
2.440 V
2.640 V
2.740 V
2.840 V
2.940 V
3.038 V
3.136 V
3.234 V
3.332 V
3.430 V
3.528 V
3.626 V
3.724 V
3.822 V
3.920 V
4.018 V
4.116 V
4.214 V
4.312 V
4.410 V
4.598 V
4.696 V
4.794 V
4.892 V
4.900 V
2.460 V
2.560 V
2.760 V
2.860 V
2.960 V
3.060 V
3.162 V
3.264 V
3.366 V
3.468 V
3.570 V
3.672 V
3.774 V
3.876 V
3.988 V
4.080 V
4.182 V
4.284 V
4.366 V
4.488 V
4.590 V
4.692 V
4.794 V
4.896 V
4.998 V
5.100 V
Full Temp. Range (T
A
= -40 to +85
°C)
V
OUT(MIN)
V
OUT(MAX)
2.305 V
2.405 V
2.605 V
2.705 V
2.805 V
2.905 V
3.007 V
3.104 V
3.201 V
3.298 V
3.395 V
3.492 V
3.589 V
3.686 V
3.783 V
3.880 V
3.977 V
4.074 V
4.171 V
4.268 V
4.365 V
4.462 V
4.559 V
4.656 V
4.753 V
4.850 V
2.495 V
2.595 V
2.795 V
2.895 V
2.995 V
3.095 V
3.193 V
3.296 V
3.400 V
3.502 V
3.605 V
3.708 V
3.811 V
3.914 V
4.017 V
4.120 V
4.223 V
4.326 V
4.429 V
4.532 V
4.635 V
4.738 V
4.841 V
4.944 V
5.047 V
5.150 V
March 1999 TOKO, Inc.
Page 5
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