March 1999 TOKO, Inc.
Page 1
TK111xxM
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-23L-6)
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
BLOCK DIAGRAM
TK111xxM
DESCRIPTION
The TK111xxM 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
µ
Vrms.
An internal PNP pass transistor is used to achieve a low
dropout voltage of 85 mV (typ.) at 30 mA load current. The
TK111xxM has a very low quiescent current of 140
µ
A
(typ.) at no load . The standby current is 100 nA maximum.
The internal thermal shutdown 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 TK111xxM is available in a miniature SOT-23L-6
surface mount package.
TK111 M L
ORDERING INFORMATION
TAPE/REEL CODE
L: Tape Left
Tape/Reel Code
Voltage Code
VOLTAGE CODE
20 = 2.0 V
36 = 3.6 V
21 = 2.1 V
37 = 3.7 V
22 = 2.2 V
38 = 3.8 V
23 = 2.3 V
39 = 3.9 V
24 = 2.4 V
40 = 4.0 V
25 = 2.5 V
41 = 4.1 V
27 = 2.7 V
42 = 4.2 V
28 = 2.8 V
43 = 4.3 V
29 = 2.9 V
44 = 4.4 V
30 = 3.0 V
45 = 4.5 V
31 = 3.1 V
46 = 4.6 V
32 = 3.2 V
47 = 4.7 V
33 = 3.3 V
48 = 4.8 V
34 = 3.4 V
49 = 4.9 V
35 = 3.5 V
50 = 5.0 V
Product Code
PACKAGE CODE
M: SOT-23L-6
Temp Code
TEMP. CODE:
C: -30 to +80
°
C
I: -40 to +85
°
C
NOTE 1:
2.0 V to 2.3 V available
in C temperature code
(-30 to +80
°
C) only.
20P
GND
CONTROL
VOUT
VIN
NOISE BYPASS
GND
NOISE
BYPASS
VIN
VOUT
THERMAL
PROTECTION
BANDGAP
REFERENCE
CONTROL
GND
VOLTAGE REGULATOR WITH ON/OFF SWITCH
Page 2
March 1999 TOKO, Inc.
TK111xxM
ABSOLUTE MAXIMUM RATINGS TK111xxMCL (V
OUT
≥
2.0 V)
Supply Voltage ......................................................... 16 V
Noise Bypass Terminal Voltage ................................. 5 V
Power Dissipation (Note 1) ................................ 600 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
TK111xxMCL ELECTRICAL CHARACTERISTICS
Test conditions: V
IN
= V
OUT(TYP)
+ 1 V, T
A
= 25
°
C, unless otherwise specified.
Note 1: Power dissipation is 600 mW when mounted as recommended. Derate at 4.8 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.
L
O
B
M
Y
S
R
E
T
E
M
A
R
A
P
S
N
O
I
T
I
D
N
O
C
T
S
E
T
N
I
M
P
Y
T
X
A
M
S
T
I
N
U
I
Q
t
n
e
r
r
u
C
t
n
e
c
s
e
i
u
Q
I
T
U
O
I
g
n
i
d
u
l
c
x
E
,
A
m
0
=
T
N
O
C
0
4
1
0
0
2
A
µ
I
Y
B
T
S
t
n
e
r
r
u
C
y
b
d
n
a
t
S
V
N
I
F
F
O
t
u
p
t
u
O
,
V
6
=
1
.
0
A
µ
V
T
U
O
e
g
a
t
l
o
V
t
u
p
t
u
O
I
T
U
O
V
,
A
m
0
1
=
N
I
V
=
)
P
Y
T
(
T
U
O
V
1
+
1
e
l
b
a
T
e
e
S
V
g
e
R
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n
i
L
n
o
i
t
a
l
u
g
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R
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n
i
L
V
N
I
V
=
)
P
Y
T
(
T
U
O
o
t
V
1
+
V
)
P
Y
T
(
T
U
O
)
2
e
t
o
N
(
,
V
6
+
8
.
0
8
1
V
m
g
e
R
d
a
o
L
n
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i
t
a
l
u
g
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R
d
a
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L
I
T
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O
)
2
e
t
o
N
(
,
A
m
0
6
o
t
1
=
8
0
3
V
m
I
T
U
O
)
2
e
t
o
N
(
,
A
m
0
0
1
o
t
1
=
4
1
5
5
V
m
V
P
O
R
D
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g
a
t
l
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t
u
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p
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D
I
T
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)
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t
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N
(
,
A
m
0
6
=
0
2
1
0
0
2
V
m
I
T
U
O
t
n
e
r
r
u
C
t
u
p
t
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O
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u
o
u
n
i
t
n
o
C
)
2
e
t
o
N
(
0
0
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
)
2
e
t
o
N
(
0
3
1
A
m
R
R
n
o
i
t
c
e
j
e
R
e
l
p
p
i
R
C
,
z
H
k
1
=
f
L
,
F
µ
7
.
4
=
C
N
V
,
F
µ
1
.
0
=
N
I
V
=
)
P
Y
T
(
T
U
O
,
V
2
+
V
R
I
,
s
m
r
V
m
0
0
2
=
T
U
O
,
A
m
0
1
=
)
4
,
3
s
e
t
o
N
(
0
7
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
0
4
≤
f
≤
C
,
z
H
k
0
8
L
,
F
µ
7
.
4
=
C
N
V
,
F
µ
1
0
.
0
=
N
I
V
=
)
P
Y
T
(
T
U
O
,
V
2
+
I
T
U
O
)
4
,
3
s
e
t
o
N
(
,
A
m
0
1
=
0
3
s
m
r
V
µ
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
=
5
2
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
4
A
µ
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
5
.
1
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
3
.
0
V
March 1999 TOKO, Inc.
Page 3
TK111xxM
ABSOLUTE MAXIMUM RATINGS TK111xxMIL (V
OUT
≥
2.4 V)
Supply Voltage ......................................................... 15 V
Control Terminal Voltage ......................................... 12 V
Noise Bypass Terminal Voltage ................................. 5 V
Power Dissipation (Note 1) ................................ 600 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
TK111xxMIL ELECTRICAL CHARACTERISTICS
Test conditions: V
IN
= V
OUT(TYP)
+ 1 V, T
A
= -40 to +85
°
C, unless otherwise specified.
Note 1: Power dissipation is 600 mW when mounted as recommended. Derate at 4.8 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.
L
O
B
M
Y
S
R
E
T
E
M
A
R
A
P
S
N
O
I
T
I
D
N
O
C
T
S
E
T
N
I
M
P
Y
T
X
A
M
S
T
I
N
U
I
Q
t
n
e
r
r
u
C
t
n
e
c
s
e
i
u
Q
I
T
U
O
I
g
n
i
d
u
l
c
x
E
,
A
m
0
=
T
N
O
C
0
4
1
0
0
2
A
µ
I
Y
B
T
S
t
n
e
r
r
u
C
y
b
d
n
a
t
S
V
N
I
F
F
O
t
u
p
t
u
O
,
V
6
=
2
.
0
A
µ
V
T
U
O
e
g
a
t
l
o
V
t
u
p
t
u
O
I
T
U
O
V
,
A