TK114xx
VOLTAGE REGULATOR WITH ON/OFF SWITCH
FEATURES
s
s
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Low Dropout Voltage
Electronic ON/OFF Switch
Very Low Standby Current (ON, No Load)
Internal Thermal Shutdown
Short Circuit Protection
Very Low (<100 nA) Current in OFF Mode
Customized Versions Are Available
APPLICATIONS
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Battery Powered Systems
Cellular Telephones
Pagers
Personal Communications Equipment
Portable Instrumentation
Portable Consumer Equipment
Radio Control Systems
Toys
Low Voltage Systems
DESCRIPTION
The TK114xx is a low power, linear regulator with a built-
in electronic switch. The internal electronic switch can be
controlled by an external pull-up resistor and an open drain
or open collector transistor. The device is in the OFF state
when the control pin is biased from V
IN
through the pull-up
resistor.
An internal PNP pass-transistor is used in order to achieve
low dropout voltage (typically 200 mV at 50 mA load
current). The device has very low quiescent current (500
µA)
in the ON mode with no load and 2 mA with 30 mA load.
The quiescent current is typically 4 mA at 60 mA load. An
internal thermal shutdown circuit limits the junction tem-
perature to below 150
°C.
The load current is internally
monitored and the device will shut down (no load current)
in the presence of a short circuit at the output. The device
is available in a small SOT-23L surface mount package.
TK114xxM
R3
CONTROL
1
2
6
5
4
V
IN
GND 3
V
O
KT114xxM.PO
BLOCK DIAGRAM
ORDERING INFORMATION
TK114
Tape/Reel Code
Voltage Code
V
IN
1
S
S
S
S
8
V
O
HIGH
CONTROL 2
(HC)
THERMAL
PROTECTION
S
S
–
S
S
+
S
+
S
S
S
S
VOLTAGE CODE
30 = 3.0 V
32 = 3.25 V
35 = 3.5 V
37 = 3.75 V
40 = 4.0 V
45 = 4.5 V
47 = 4.75 V
50 = 5.0 V
55 = 5.5 V
57 = 5.75 V
60 = 6.0 V
80 = 8.0 V
TAPE/REEL CODE
BX : Bulk/Bag
TL : Tape Left
LOW
CONTROL 3
(LC)
S
TK114xx
BANDGAP
REFERENCE
S
January, 1995 TOKO, Inc.
11-20-94
–
S
6
GND
KT114xx • BD
Page 1
TK114xx
ABSOLUTE MAXIMUM RATINGS
Supply Voltage ......................................................... 16 V
Load Current ....................................................... 180 mA
Power Dissipation (Note 1) ................................ 400 mW
Storage Temperature Range ................... -55 to +150
°C
Operating Temperature Range .................. -30 to +80
°C
Lead Soldering Temp. (10 sec.) ........................... 240
°C
Junction Temperature .......................................... 150
°C
TK11430 ELECTRICAL CHARACTERISTICS
SYMBOL
I
IN1
I
IN2
I
INS
V
O
V
DROP
I
O
I
OR
LinReg
LoaReg
RR
∆V/∆T
V
N
Control Pin
I
CONT
V
Coff
V
Con
Control Pin Current
Control Pin Voltage
Control Pin Voltage
On Mode
Off Mode
On Mode
V
IN
-0.2
0
35
120
V
IN
0.6
µA
V
V
PARAMETER
Supply Current 1
Supply Current 2
Standby Current
Output Voltage Regulation
Dropout Voltage
Output Current
Recommended Output
Current
Line Regulation
Load Regulation
Ripple Rejection
V
O
Temperature Coefficient
Output Noise Voltage
V
IN
= 4 V
→
9 V
I
O
= 0 mA to 30 mA
I
O
= 0 mA to 60 mA
100 mV(rms), f = 400 Hz
V
IN
= 4.5 V, I
O
= 10 mA
V
IN
= 4.5 V, I
O
= 10 mA
-20
°C ≤
T
A
≤
75
°C
V
IN
= 4.5 V, I
O
= 10 mA
5
18
36
55
±0.3
180
TEST CONDITION
V
IN
= 4 V, I
O
= 0 mA
V
IN
= 2.5 V, I
O
= 0 mA
V
IN
= 10 V, Output Off
V
IN
= 4 V, I
O
= 30 mA
I
O
= 30 mA
70
2.9
3.0
0.12
110
70
30
50
80
MIN
TYP
500
1
MAX
900
2.5
0.1
3.1
0.3
UNITS
µA
µA
µA
%
V
mA
mA
mV
mV
mV
dB
mV/°C
µV(rms)
Note 1: Power dissipation must be derated at the rate of 1.6 mW/
°C
for operation above T
A
= 25
°C.
TEST CIRCUIT 1
S
V
IN
+
_
A
S
S
S
V
OUT
I
OUT
V
+
1 mF
V
IN
6
5
V
OUT
4
+
10 mF
150K
W
1
CONT
CONT
S
2
3
GND
A
I
CONT
+
_
V
NOTE: CONNECT PINS 2 AND 5 TO
GND FOR MAXIMUM HEAT CONDUCTION.
KT114xx • TC01A
Page 2
11-20-94
January, 1995 TOKO, Inc.
TK114xx
TK11432 ELECTRICAL CHARACTERISTICS
SYMBOL
I
IN1
I
IN2
I
INS
V
O
V
DROP
I
O
I
OR
LinReg
LoaReg
RR
∆V/∆T
V
N
Control Pin
I
CONT
V
Coff
V
Con
Control Pin Current
Control Pin Voltage
Control Pin Voltage
On Mode
Off Mode
On Mode
V
IN
-0.2
0
35
120
V
IN
0.6
µA
V
V
PARAMETER
Supply Current 1
Supply Current 2
Standby Current
Output Voltage Regulation
Dropout Voltage
Output Current
Recommended Output
Current
Line Regulation
Load Regulation
Ripple Rejection
V
O
Temperature Coefficient
Output Noise Voltage
V
IN
= 4.2 V
→
9.2 V
V
IN
= 4.2 V, I
O
= 0 mA to 30 mA
V
IN
= 4.2 V, I = 0 mA to 60 mA
O
100 mV(rms), f = 400 Hz
V
IN
= 4.7 V, I
O
= 10 mA
V
IN
= 4.7 V, I
O
= 10 mA
-20
°C ≤
T
A
≤
75
°C
10 Hz
≤
f
≤
100 KHz, I
O
= 10 mA
6
20
40
55
±0.3
180
TEST CONDITION
V
IN
= 4.2 V, I
O
= 0 mA
V
IN
= 2.5 V, I
O
= 0 mA
V
IN
= 10 V, Output Off
V
IN
= 4.2 V, I
O
= 30 mA
I
O
= 30 mA
(Note 2)
70
3.13
3.25
0.12
110
70
30
50
80
MIN
TYP
500
1
MAX
900
2.5
0.1
3.37
0.3
UNITS
µA
µA
µA
%
V
mA
mA
mV
mV
mV
dB
mV/°C
µV(rms)
Note 2: I
O
(Load Current) is current when V
O
drop down 0.3V from V
O
at I
O
= 30 mA.
January, 1995 TOKO, Inc.
11-20-94
Page 3
Embedded System
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