TK113xxBM/U
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 SOT23L or SOT89 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 SOT23L or 5-pin
SOT89 surface mount packages.
TK113xxB
CONTROL
20P
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 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
SOT23L
VOUT
NOISE BYPASS
VOUT
GND
VIN
GND
CONTROL
SOT89
ORDERING INFORMATION
TK113
Voltage Code
Package Code
B
Tape/Reel Code
Temp. Code
VIN
BLOCK DIAGRAM
VOUT
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: SOT23L
U: SOT89
TAPE/REEL CODE
L: Tape Left (SOT23L)
B: Tape Left (SOT89)
CONTROL
THERMAL
PROTECTION
TEMP. CODE:
C: -30 to +80
°C
I: -40 to +85°C
BANDGAP
REFERENCE
GND
NOISE
BYPASS
April 2000 TOKO, Inc.
Page 1
TOKO [ TOKO, INC ]
