TK113xxBM/U

April 2000 TOKO, Inc.

Page 1

ORDERING INFORMATION

TAPE/REEL CODE

L: Tape Left (SOT23L)

B: Tape Left (SOT89)

TEMP. CODE:

C: -30 to +80

°C

I: -40 to +85

°C

Tape/Reel Code

TK113

B

Voltage Code

Package Code

PACKAGE CODE:

M: SOT23L

U: SOT89

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

Temp. Code

NOISE

BYPASS

VIN

VOUT

THERMAL

PROTECTION

BANDGAP

REFERENCE

CONTROL

GND

VOLTAGE REGULATOR WITH ON/OFF SWITCH

FEATURES

s High Voltage Precision at

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

BLOCK DIAGRAM

TK113xxB

20P

GND

CONTROL

VOUT

VIN

NOISE BYPASS

GND

VOUT

GND

NOISE BYPASS

GND

CONTROL

VIN

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.

The TK113xxB is available in either 6-pin SOT23L or 5-pin

SOT89 surface mount packages.

SOT23L

SOT89