TK71644ASCL datasheet, PDF - EEWORLD Datasheet

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TK71644ASCL: DescriptionLOW DROPOUT VOLTAGE REGULATOR; CategoryAnalog mixed-signal IC The signal circuit; File Size114KB，20 Pages; ManufacturerTOKO, INC.; Websitehttps://www.murata.com/

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TK71644ASCL Overview

LOW DROPOUT VOLTAGE REGULATOR

TK71644ASCL Parametric

Parameter Name	Attribute value
Maker	TOKO, INC.
package instruction	,
Reach Compliance Code	unknow
Base Number Matches	1

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TK716xx

LOW DROPOUT VOLTAGE REGULATOR

FEATURES

Available in

2.0 % or

1.0 % Output Tolerance

Active High On/Off Control

Very Low Quiescent Current

Very Low Dropout Voltage

Reverse Bias Protection

Miniature Package (SOT23-5)

Short Circuit Switch

High Ripple Rejection

Very High Output Impedance (Output Off)

Very Low Noise

APPLICATIONS

Battery Powered Systems

Cellular Telephones

Pagers

Personal Communications Equipment

Portable Instrumentation

Portable Consumer Equipment

Radio Control Systems

Toys

Low Voltage Systems

DESCRIPTION

The TK716xx is a low dropout linear regulator housed in a

small SOT23-5 package, rated at 500 mW. The phase

compensation in the IC has been optimized to allow the

use of ceramic or tantalum output capacitors. The device

is in the “on” state when the control pin is pulled to a logic

high level. An internal PNP pass transistor is used to

achieve a low dropout voltage of 90 mV (typ.) at 50 mA

load current. This device offers high precision output

voltage of

2.0 % or

1.0 %. The low quiescent current

and dropout voltage make this part ideal for battery pow-

ered applications. This part incorporates an output discon-

nect feature to reduce the reverse bias current in the “off”

state to less than 50 nA.

The internal reverse bias protection eliminates the require-

ment for a reverse voltage protection diode, saving cost

and board space. The high 60 dB ripple rejection (400 Hz)

and low noise provide enhanced performance for critical

applications. An external capacitor can be connected to

the noise bypass pin to lower the output noise level to 30

µVrms.

TK716xx

VIN

GND

CONTROL

VOUT

20P

ORDERING INFORMATION

NOISE

BYPASS

TK716

Voltage Code

Capacitor Code

Package Code

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

*Check Table 4

for availability.

SCL

SIL

SCL H

Tolerance Code

Tape/Reel Code

Temp. Code

TAPE/REEL CODE

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

51 = 5.1 V

52 = 5.2 V

53 = 5.3 V

54 = 5.4 V

L: Tape Left

VIN

BLOCK DIAGRAM

VOUT

CONTROL

CIRCUIT

CONSTANT

CURRENT

SOURCE

THERMAL AND

OVERCURRENT

PROTECTION

BANDGAP

REFERENCE

DISCONNECT

CIRCUIT

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

TEMPERATURE CODE

C: Standard Temp. Range

I: Extended Temp. Range

CONTROL

PACKAGE CODE

S: SOT23-5

TOLERANCE CODE

H: 1 % Output Voltage Tolerance

(Not available in I temp code)

CAPACITOR CODE

None: Ceramic Capacitor

A: Tantalum Capacitor

GND

NOISE

BYPASS

December 1999 TOKO, Inc.

Page 1

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