TK11249BUIL datasheet, PDF - EEWORLD Datasheet

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TK11249BUIL: DescriptionVOLTAGE REGULATOR WITH ON/OFF SWITCH; File Size160KB，24 Pages; ManufacturerTOKO, INC.; Websitehttps://www.murata.com/

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TK11249BUIL Overview

VOLTAGE REGULATOR WITH ON/OFF SWITCH

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TK112xxB

VOLTAGE REGULATOR WITH ON/OFF SWITCH

FEATURES

High Voltage Precision at

2.0%

Active High On/Off Control

Very Low Dropout Voltage 80 mV at 30 mA

Very Low Noise

Very Small SOT-23L or SOT-89 Surface Mount

Packages

Internal Thermal Shutdown

Short Circuit Protection

APPLICATIONS

Battery Powered Systems

Cellular Telephones

Pagers

Personal Communications Equipment

Portable Instrumentation

Portable Consumer Equipment

Radio Control Systems

Toys

Low Voltage Systems

The TK112xxB is available in either a 6-pin SOT-23L or a

5-pin SOT-89 surface mount package.

TK112xxB

CONTROL

20P

DESCRIPTION

The TK112xxB 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

µVrms.

An internal PNP pass transistor is used to achieve a low

dropout voltage of 80 mV (typ.) at 30 mA load current. The

TK112xxB has a very low quiescent current of 170

µA

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

NOISE BYPASS

SOT-23L

VOUT

NOISE BYPASS

VOUT

GND

VIN

GND

ORDERING INFORMATION

SOT-89

CONTROL

TK112

Voltage Code

Package Code

Tape/Reel Code

Temp. Code

VIN

VOUT

BLOCK DIAGRAM

VOLTAGE CODE

13 = 1.3 V

14 = 1.4 V

15 = 1.5 V

16 = 1.6 V

17 = 1.7 V

18 = 1.8 V

19 = 1.9 V

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

80 = 8.0 V

PACKAGE CODE:

M: SOT-23L

U: SOT-89

NOTE 1:

1.3 V to 1.9 V available

in SOT-23L package only.

TAPE/REEL CODE

L: Tape Left (SOT-23L)

B: Tape Left (SOT-89)

THERMAL

PROTECTION

TEMP. CODE:

C: -30 to +80 C

I: -40 to +85 C

CONTROL

NOTE 2:

1.3 V to 2.4 V available

in C temperature code

(-30 to +80 C) only.

BANDGAP

REFERENCE

GND

NOISE

BYPASS

October 1999 TOKO, Inc.

Page 1

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