TK113XXB Datasheet, PDF (1/13 Pages) TOKO, Inc – VOLTAGE REGULATOR WITH ON/OFF SWITCH

TK113xxB
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 SOT-23L or SOT-89-5 Surface Mount
Packages
s Internal Thermal Shutdown
s Short Circuit Protection
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.
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 SOT-23L or 5 pin
SOT-89-5 surface mount packages.
TK113XXB
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 shutdown circuitry
limits the junction temperature to below 150 °C. The load
current is internally monitored and the device will shutdown
in the presence of a short circuit or overcurrent condition at
the output.
ORDERING INFORMATION
TK113 B C
Voltage Code
Tape/Reel Code
Package Code
VOLTAGE CODE
20 = 2.0 V 37 = 3.7 V
21 = 2.1 V 38 = 3.8 V
22 = 2.2 V 39 = 3.9 V
23 = 2.3 V 40 = 4.0 V
24 = 2.4 V 41 = 4.1 V
25 = 2.5 V 42 = 4.2 V
26 = 2.6 V 43 = 4.3 V
27 = 2.7 V 44 = 4.4 V
28 = 2.8 V 45 = 4.5 V
29 = 2.9 V 46 = 4.6 V
30 = 3.0 V 47 = 4.7 V
31 = 3.1 V 48 = 4.8 V
32 = 3.2 V 49 = 4.9 V
33 = 3.3 V 50 = 5.0 V
34 = 3.4 V 55 = 5.5 V
35 = 3.5 V 60 = 6.0 V
36 = 3.6 V 80 = 8.0 V
PACKAGE CODE
M: SOT-23L
U: SOT-89-5
May, 1997 TOKO, Inc.
TAPE/REEL CODE
L : Tape Left
(SOT-23L)
B : Tape Bottom
(SOT-89-5)
V_IN
CONTROL
20Q
CONTROL 1
6 V_IN
GND 2
5 GND
NOISE
BYPASS
3
4 V_OUT
NOISE
BYPASS ¹
GND 2
CONTROL 3
6 VOUT
5 GND
4 VIN
BLOCK DIAGRAM
S
S
S
S
THERMAL
PROTECTION
–
S
+
S
+
S
–
S
S
S
BANDGAP
REFERENCE
S
S
NOISE BYPASS
S
V_OUT
S
S
GND
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