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TK71625 Datasheet Preview

TK71625 Datasheet

LOW DROPOUT VOLTAGE REGULATOR

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TK716xx

LOW DROPOUT VOLTAGE REGULATOR

FEATURES

s Available in ± 2.0 % or ± 1.0 % Output Tolerance

s Active High On/Off Control

s Very Low Quiescent Current

s Very Low Dropout Voltage

s Reverse Bias Protection

s Miniature Package (SOT23-5)

s Short Circuit Switch

s High Ripple Rejection

s Very High Output Impedance (Output Off)

s Very Low Noise

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

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.

ORDERING INFORMATION

TK716

SCL

SIL

SCL H

Voltage Code

Capacitor Code

Package Code

Tolerance Code

Tape/Reel Code

Temp. Code

VOLTAGE CODE*

13 = 1.3 V

27 = 2.7 V

14 = 1.4 V

28 = 2.8 V

15 = 1.5 V

29 = 2.9 V

16 = 1.6 V

30 = 3.0 V

17 = 1.7 V

31 = 3.1 V

18 = 1.8 V

32 = 3.2 V

19 = 1.9 V

33 = 3.3 V

20 = 2.0 V

34 = 3.4 V

21 = 2.1 V

35 = 3.5 V

22 = 2.2 V

36 = 3.6 V

23 = 2.3 V

37 = 3.7 V

24 = 2.4 V

38 = 3.8 V

25 = 2.5 V

39 = 3.9 V

26 = 2.6 V

40 = 4.0 V

*Check Table 4

for availability.

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

TAPE/REEL CODE

L: Tape Left

TEMPERATURE CODE

C: Standard Temp. Range

I: Extended Temp. Range

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

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

GND20P

CONTROL

VOUT

NOISE

BYPASS

VIN

CONTROL

BLOCK DIAGRAM

CONTROL

CIRCUIT

CONSTANT

CURRENT

SOURCE

BANDGAP

REFERENCE

THERMAL AND

OVERCURRENT

PROTECTION

VOUT

DISCONNECT

CIRCUIT

GND

NOISE

BYPASS

December 1999 TOKO, Inc.

Page 1

TOKO

TK71625 Datasheet Preview

TK71625 Datasheet

LOW DROPOUT VOLTAGE REGULATOR

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TK716xx

ABSOLUTE MAXIMUM RATINGS

Supply Voltage ......................................................... 16 V

Power Dissipation (Note 1) ................................ 500 mW

Reverse Bias Voltage ................................................. 6 V

Control Terminal Voltage ......................................... 12 V

Noise Bypass Terminal Voltage ................................. 5 V

Operating Voltage Range ............................... 1.8 to 12 V

Storage Temperature Range ................... -55 to +150 °C

Operating Temperature (Ambient) Range

TK716xx SCL, TK716xx SCLH ............ -30 to +80 °C

TK716xx SIL .......................................... -40 to +85 °C

Junction Temperature (Operating) ........................ 125 °C

Junction Temperature (Shutdown) ........................ 150 °C

Lead Soldering Temperature (10 s) ...................... 235 °C

TK716xx SCL AND TK716xx SCLH ELECTRICAL CHARACTERISTICS

Test conditions: VIN = VOUT(TYP) + 1 V, TA = 25 °C, unless otherwise specified.

SYMBOL

PARAMETER

TEST CONDITIONS

MIN TYP MAX UNITS

IQ Quiescent Current

STBY

Standby Current

IREV Reverse Bias Current

IGND GND Pin Current

IOUT Continuous Output Current

IOUT(PULSE) Pulse Output Current

VOUT

Output Voltage

∆VOUT /∆T Temperature Coefficient

Line Reg Line Regulation

Load Reg Load Regulation

VDROP

Dropout Voltage

Vref

Noise Bypass Terminal

Voltage

IOUT = 0 mA, Excluding ICONT

Output

OFF

CONT

≤

0.15

VIN = 0 V, VREV = 5 V, Output OFF

IOUT = 50 mA

10 ms pulse, Duty Cycle = 40 %

VIN = V +OUT(TYP) 1 V, IOUT = 5 mA

VIN = VOUT(TYP) + 1 V to VOUT(TYP) + 6 V

1 mA < IOUT < 50 mA

1 mA < IOUT < 100 mA

1 mA < IOUT < 150 mA

IOUT = 50 mA

IOUT = 100 mA

IOUT = 150 mA

OUT

≥

2.4 V

VOUT < 2.4 V

70 100

0.1

1 50

1 1.8

150

200

See Table 1 and 2

2 15

4 18

7 28

12 50

90 160

140 230

200 300

200 350

µA

ppm/° C

1.26

CONTROL TERMINAL SPECIFICATIONS

ICONT

Control Current

VOUT = 1.6 V, Output ON

10 µA

VCONT(ON) Control Voltage ON

Output ON

1.6 V

VCONT(OFF) Control Voltage OFF

Output OFF

0.6 V

Note 1: Power dissipation is 500 mW when mounted as recommended. Derate at 4.0 mW/°C for operation above 25 °C.

Gen Note: Exceeding the “Absolute Maximum Ratings” may damage the device.

Gen Note: Parameters with min. or max. values are 100% tested at TA = 25 °C.

Gen Note: Ripple rejection is @ 60 dB when f = 400 Hz, CL = 10 µF, CN = 0.1 µF, input noise = 100 mVrms, VIN = VOUT(TYP) + 1.5 V and IOUT = 30 mA.

Gen Note: Output noise is 0.13 ~ 0.23 µV/ Hz at 1 kHz when CN = 0.1 µF.

Page 2

December 1999 TOKO, Inc.

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LOW DROPOUT VOLTAGE REGULATOR

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LOW DROPOUT VOLTAGE REGULATOR

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