TOKO TK11255AUTB, TK11255AUBX, TK11255AMTL, TK11255AMBX, TK11250AUTB Datasheet

TK112xxA

V

2
2
2
2
2
2
3
3
3

T

C

C

T

C

VOLTAGE REGULATOR WITH ON/OFF SWITCH

FEATURES

■ High Voltage Precision at ± 2.4%

■ Active High On/Off Control

■ Very Low Dropout Voltage 80 mV at 30 mA

■ Very Low Noise

■ Very Small SOT-23L or SOT-89-5 Surface Mount

Packages

■ Internal Thermal Shutdown

■ Short Circuit Protection

DESCRIPTION

The TK112xxA is a low dropout linear regulator with a built­in 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 70 mV (typ.) at 30 mA load current. The
TK112xxA has a very low quiescent current of 180 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.

APPLICATIONS

■ Battery Powered Systems

■ Cellular Telephones

■ Pagers

■ Personal Communications Equipment

■ Portable Instrumentation

■ Portable Consumer Equipment

■ Radio Control Systems

■ Toys

■ Low Voltage Systems

TK112XXA

GND

NOISE

NOISE

BYPASS

GND

ONTROL

1

2 5

3

1

2

3

ONTROL

P50

BYPASS

64V

IN

GND

V

OUT

TK112xxA • PO

6

V

OU

5

GND

V

4

IN

The TK112xxA is available in either 6 pin SOT-23L or 5 pin
SOT-89-5 surface mount packages.

BLOCK DIAGRAM

ORDERING INFORMATION

V

TK112 A

Voltage Code

OLTAGE CODE

0 = 2.0 V*
1 = 2.1 V
2 = 2.22 V*
5 = 2.5 V*
8 = 2.8 V*
9 = 2.9 V
0 = 3.0 V*
1 = 3.1 V*
3 = 3.3 V*

January, 1996 TOKO, Inc.

35 = 3.5 V*
36 = 3.6 V
38 = 3.8 V
40 = 4.0 V*
42 = 4.2 V
45 = 4.5 V*
48 = 4.8 V*
49 = 4.9 V
50 = 5.0 V*
55 = 5.5 V

PACKAGE CODE

M: SOT-23L
U:

* Indicates voltage is available in a SOT-89-5 package.

SOT-89-5

Tape/Reel Code
Package Code

TAPE/REEL CODE

BX : Bulk/Bag
TL : Tape Left
(SOT-23L)
TB : Tape Bottom
(SOT-89-5)

1-4-96

IN

ONTROL

S

S

S

S

S

BANDGAP

S

REFERENCE

S S

SS

THERMAL

PROTECTION

SS

S

–

S

+

S

S

+
–

S

NOISE BYPASS

S

S

S

Page 1

V

GND

OU

TK112xxA

ABSOLUTE MAXIMUM RATINGS

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

Power Dissipation SOT-23L (Note 1)................. 400 mW

Power Dissipation SOT-89-5 (Note 2)................ 800 mW

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

TK11220A ELECTRICAL CHARACTERISTICS

Test conditions: T

SYMBOL PARAMETER TEST CONDITIONS MIN TYP MAX UNITS

= 25 °C, VIN = 3.0 V, CP = 0.1 µF, unless otherwise specified.

A

Operating Temperature Range ...................-30 to +80 °C

Lead Soldering Temp. (3 sec.)..............................230 °C

Junction Temperature ........................................... 150 °C

I

IN

I

STBY

V

O

V

DROP

Quiescent Current IO = 0 mA, Except I

CONT

170 350 µA
Standby Current VIN = 8 V, at output off 0.1 µA
Output Voltage IO = 30 mA 1.92 2.00 2.08 V
Dropout Voltage

IO = 60 mA 0.16 0.26 V
IO = 150 mA 0.29 0.4 V

I
I

O
OR

Output Current V

= 1.7 V 180 240 mA

OUT

Recommended Output Current 150 mA

Line Reg Line Regulation VIN = 3 V → 8 V 3.0 20 mV
Load Reg Load Regulation

IO = 5 mA → 60 mA (Note 3) 10 50 mV
IO = 5 mA → 100 mA 20 100 mV

IO = 5 mA → 150 mA 30 160 mV

RR Ripple Rejection 100 mV(rms), IO = 10 mA 55 dB
∆VO/∆T

Output Voltage IO = 10 mA 0.2 mV/ °C

A

Temperature Dependency -20 °C ≤ TA ≤ + 75 °C

V

NO

Output Noise Voltage 10 Hz < f < 80 kHz, 30 µV(rms)

IO = 30 mA

V

REF

Noise Bypass Terminal Voltage 1.25 V

Control Terminal Specification

I

CONT

V

CONT

Control Current Output on, V
Control Voltage

Output on 1.8 V

= 1.8 V 12 30 µA

CONT

Output off 0.6 V

t

r

Note 1: Power dissipation is 400 mW when mounted as recommended. Derate at 3.2 mW/°C for TA > 25 °C.
Note 2: Power dissipation is 800 mW when mounted as recommended. Derate at 6.4 mW/°C for T
Note 3: This is a pulse measurement where T

Page 2

Output Rise Time IO = 30 mA, 0.3 ms

V

= 0 V → 1.8 V

CONT

> 25 °C.

is constant. The output change due to temperature is not included.

J

1-4-96

A

January, 1996 TOKO, Inc.

TK112xxA

TK11221A ELECTRICAL CHARACTERISTICS

Test conditions: T

SYMBOL PARAMETER TEST CONDITIONS MIN TYP MAX UNITS

= 25 °C, VIN = 3.1 V, CP = 0.1 µF, unless otherwise specified.

A

I

IN

I

STBY

V

O

V

DROP

Quiescent Current IO = 0 mA, Except I

CONT

170 350 µA
Standby Current VIN = 8 V, at output off 0.1 µA
Output Voltage IO = 30 mA 2.02 2.10 2.18 V
Dropout Voltage

IO = 60 mA 0.16 0.26 V
IO = 150 mA 0.29 0.4 V

I
I

O
OR

Output Current V

= 1.8 V 180 240 mA

OUT

Recommended Output Current 150 mA

Line Reg Line Regulation VIN = 3.1 V → 8.1 V 3.0 20 mV
Load Reg Load Regulation

IO = 5 mA → 60 mA (Note 1) 10 50 mV
IO = 5 mA → 100 mA 20 100 mV

IO = 5 mA → 150 mA 30 160 mV

RR Ripple Rejection 100 mV(rms), IO = 10 mA 55 dB
∆VO/∆T

Output Voltage VIN = 3.5 V, IO = 10 mA 0.2 mV/ °C

A

Temperature Dependency -20 °C ≤ TA ≤ + 75 °C

V

NO

Output Noise Voltage 10 Hz < f < 80 kHz, 30 µV(rms)

IO = 30 mA

V

REF

Noise Bypass Terminal Voltage 1.25 V

Control Terminal Specification

I

CONT

V

CONT

Control Current Output on, V
Control Voltage

Output on 1.8 V

= 1.8 V 12 30 µA

CONT

Output off 0.6 V

t

r

Note 1: This is a pulse measurement where TJ is constant. The output change due to temperature is not included.

January, 1996 TOKO, Inc.

Output Rise Time IO = 30 mA, 0.3 ms

V

= 0 V → 1.8 V

CONT

1-4-96

Page 3

TK112xxA

TK11222A ELECTRICAL CHARACTERISTICS

Test conditions: T

SYMBOL PARAMETER TEST CONDITIONS MIN TYP MAX UNITS

= 25 °C, VIN = 3.22 V, CP = 0.1 µF, unless otherwise specified.

A

I

IN

I

STBY

V

O

V

DROP

Quiescent Current IO = 0 mA, Except I

CONT

170 350 µA
Standby Current VIN = 8 V, at output off 0.1 µA
Output Voltage IO = 30 mA 2.14 2.22 2.3 V
Dropout Voltage

IO = 60 mA 0.16 0.26 V
IO = 150 mA 0.29 0.4 V

I
I

O
OR

Output Current V

= 1.92 V 180 240 mA

OUT

Recommended Output Current 150 mA

Line Reg Line Regulation VIN = 3.22 V → 8.22 V 3.0 20 mV
Load Reg Load Regulation

IO = 5 mA → 60 mA (Note 1) 10 50 mV
IO = 5 mA → 100 mA 20 100 mV

IO = 5 mA → 150 mA 30 160 mV

RR Ripple Rejection 100 mV(rms), IO = 10 mA 55 dB
∆VO/∆T

Output Voltage VIN = 3.72 V, IO = 10 mA 0.05 mV/ °C

A

Temperature Dependency -20 °C ≤ TA ≤ + 75 °C

V

NO

Output Noise Voltage 10 Hz < f < 80 kHz, 30 µV(rms)

IO = 30 mA

V

REF

Noise Bypass Terminal Voltage 1.25 V

Control Terminal Specification

I

CONT

V

CONT

Control Current Output on, V
Control Voltage

Output on 1.8 V

= 1.8 V 12 30 µA

CONT

Output off 0.6 V

t

r

Note 1: This is a pulse measurement where TJ is constant. The output change due to temperature is not included.

Page 4

Output Rise Time IO = 30 mA, 0.3 ms

V

= 0 V → 1.8 V

CONT

1-4-96

January, 1996 TOKO, Inc.

TK112xxA

TK11225A ELECTRICAL CHARACTERISTICS

Test conditions: T

SYMBOL PARAMETER TEST CONDITIONS MIN TYP MAX UNITS

= 25 °C, VIN = 3.5 V, CP = 0.1 µF, unless otherwise specified.

A

I

IN

I

STBY

V

O

V

DROP

Quiescent Current IO = 0 mA, Except I

CONT

170 350 µA
Standby Current VIN = 8 V, at output off 0.1 µA
Output Voltage IO = 30 mA 2.42 2.50 2.58 V
Dropout Voltage

IO = 60 mA 0.16 0.26 V
IO = 150 mA 0.29 0.4 V

I
I

O
OR

Output Current V

= 2.2 V 180 240 mA

OUT

Recommended Output Current 150 mA

Line Reg Line Regulation VIN = 3.5 V → 8.5 V (Note 1) 3.0 20 mV
Load Reg Load Regulation

IO = 5 mA → 60 mA 10 50 mV
IO = 5 mA → 100 mA 20 100 mV
IO = 5 mA → 150 mA 30 160 mV

RR Ripple Rejection 100 mV(rms), IO = 10 mA 55 dB
∆VO/∆T

Output Voltage VIN = 4.0 V, IO = 10 mA 0.05 mV/ °C

A

Temperature Dependency -20 °C ≤ TA ≤ + 75 °C

V

NO

Output Noise Voltage 10 Hz < f < 80 kHz, 30 µV(rms)

IO = 30 mA

V

REF

Noise Bypass Terminal Voltage 1.25 V

Control Terminal Specification

I

CONT

V

CONT

Control Current Output on, V
Control Voltage

Output on 1.8 V

= 1.8 V 12 30 µA

CONT

Output off 0.6 V

t

r

Note 1: This is a pulse measurement where TJ is constant. The output change due to temperature is not included.

January, 1996 TOKO, Inc.

Output Rise Time IO = 30 mA, 0.3 ms

V

= 0 V → 1.8 V

CONT

1-4-96

Page 5

TK112xxA

TK11228A ELECTRICAL CHARACTERISTICS

Test conditions: T

SYMBOL PARAMETER TEST CONDITIONS MIN TYP MAX UNITS

= 25 °C, VIN = 3.8 V, CP = 0.1 µF, unless otherwise specified.

A

I

IN

I

STBY

V

O

V

DROP

Quiescent Current IO = 0 mA, Except I

CONT

170 350 µA
Standby Current VIN = 8 V, at output off 0.1 µA
Output Voltage IO = 30 mA 2.72 2.80 2.88 V
Dropout Voltage IO = 60 mA 0.16 0.26 V

IO = 150 mA 0.29 0.4 V

I
I

O
OR

Output Current V

= 2.5 V 180 240 mA

OUT

Recommended Output Current 150 mA

Line Reg Line Regulation VIN = 3.8 V → 8.8 V 3.0 20 mV
Load Reg Load Regulation

IO = 5 mA → 60 mA (Note 1) 10 50 mV
IO = 5 mA → 100 mA 20 100 mV
IO = 5 mA → 150 mA 30 160 mV

RR Ripple Rejection 100 mV(rms), IO = 10 mA 55 dB
∆VO/∆T

Output Voltage VIN = 4.3 V, IO = 10 mA 0.05 mV/ °C

A

Temperature Dependency -20 °C ≤ TA ≤ + 75 °C

V

NO

Output Noise Voltage 10 Hz < f < 80 kHz, 30 µV(rms)

IO = 30 mA

V

REF

Noise Bypass Terminal Voltage 1.25 V

Control Terminal Specification

I

CONT

V

CONT

Control Current Output on, V
Control Voltage

Output on 1.8 V

= 1.8 V 12 30 µA

CONT

Output off 0.6 V

t

r

Note 1: This is a pulse measurement where TJ is constant. The output change due to temperature is not included.

Page 6

Output Rise Time IO = 30 mA, 0.3 ms

V

= 0 V → 1.8 V

CONT

1-4-96

January, 1996 TOKO, Inc.

TK112xxA

TK11229A ELECTRICAL CHARACTERISTICS

Test conditions: T

SYMBOL PARAMETER TEST CONDITIONS MIN TYP MAX UNITS

= 25 °C, VIN = 3.9 V, CP = 0.1 µF, unless otherwise specified.

A

I

IN

I

STBY

V

O

V

DROP

Quiescent Current IO = 0 mA, Except I

CONT

170 350 µA
Standby Current VIN = 8 V, at output off 0.1 µA
Output Voltage IO = 30 mA 2.82 2.90 2.98 V
Dropout Voltage

IO = 60 mA 0.16 0.26 V
IO = 150 mA 0.29 0.4 V

I
I

O
OR

Output Current V

= 2.6 V 240 mA

OUT

Recommended Output Current 150 mA

Line Reg Line Regulation VIN = 3.9 V → 8.9 V 3.0 20 mV
Load Reg Load Regulation

IO = 5 mA → 60 mA (Note 1) 10 50 mV
IO = 5 mA → 100 mA 20 100 mV
IO = 5 mA → 150 mA 30 160 mV

RR Ripple Rejection 100 mV(rms), IO = 10 mA 55 dB
∆VO/∆T

Output Voltage VIN = 4.4 V, IO = 10 mA 0.05 mV/ °C

A

Temperature Dependency -20 °C ≤ TA ≤ + 75 °C

V

NO

Output Noise Voltage 10 Hz < f < 80 kHz, 30 µV(rms)

IO = 30 mA

V

REF

Noise Bypass Terminal Voltage 1.25 V

Control Terminal Specification

I

CONT

V

CONT

Control Current Output on, V
Control Voltage

Output on 1.8 V

= 1.8 V 12 30 µA

CONT

Output off 0.6 V

t

r

Note 1: This is a pulse measurement where TJ is constant. The output change due to temperature is not included.

January, 1996 TOKO, Inc.

Output Rise Time IO = 30 mA, 0.3 ms

V

= 0 V → 1.8 V

CONT

1-4-96

Page 7

TK112xxA

TK11230A ELECTRICAL CHARACTERISTICS

Test conditions: T

SYMBOL PARAMETER TEST CONDITIONS MIN TYP MAX UNITS

= 25 °C, VIN = 4.0 V, CP = 0.1 µF, unless otherwise specified.

A

I

IN

I

STBY

V

O

V

DROP

Quiescent Current IO = 0 mA, Except I

CONT

170 350 µA
Standby Current VIN = 8 V, at output off 0.1 µA
Output Voltage IO = 30 mA 2.92 3.00 3.08 V
Dropout Voltage

IO = 60 mA 0.16 0.26 V
IO = 150 mA 0.29 0.4 V

I
I

O
OR

Output Current V

= 2.7 V 180 240 mA

OUT

Recommended Output Current 150 mA

Line Reg Line Regulation VIN = 4 V → 9 V 3.0 20 mV
Load Reg Load Regulation

IO = 5 mA → 60 mA (Note 1) 10 50 mV
IO = 5 mA → 100 mA 20 100 mV
IO = 5 mA → 150 mA 30 160 mV

RR Ripple Rejection 100 mV(rms), IO = 10 mA 55 dB
∆VO/∆T

Output Voltage VIN = 4.5 V, IO = 10 mA 0.05 mV/ °C

A

Temperature Dependency -20 °C ≤ TA ≤ + 75 °C

V

NO

Output Noise Voltage 10 Hz < f < 80 kHz, 30 µV(rms)

IO = 30 mA

V

REF

Noise Bypass Terminal Voltage 1.25 V

Control Terminal Specification

I

CONT

V

CONT

Control Current Output on, V
Control Voltage

Output on 1.8 V

= 1.8 V 12 30 µA

CONT

Output off 0.6 V

t

r

Note 1: This is a pulse measurement where TJ is constant. The output change due to temperature is not included.

Page 8

Output Rise Time IO = 30 mA, 0.3 ms

V

= 0 V → 1.8 V

CONT

1-4-96

January, 1996 TOKO, Inc.

TK112xxA

TK11231A ELECTRICAL CHARACTERISTICS

Test conditions: T

SYMBOL PARAMETER TEST CONDITIONS MIN TYP MAX UNITS

= 25 °C, VIN = 4.1 V, CP = 0.1 µF, unless otherwise specified.

A

I

IN

I

STBY

V

O

V

DROP

Quiescent Current IO = 0 mA, Except I

CONT

170 350 µA
Standby Current VIN = 8 V, at output off 0.1 µA
Output Voltage IO = 30 mA 3.02 3.10 3.18 V
Dropout Voltage

IO = 60 mA 0.16 0.26 V
IO = 150 mA 0.29 0.4 V

I
I

O
OR

Output Current V

= 2.8 V 180 240 mA

OUT

Recommended Output Current 150 mA

Line Reg Line Regulation VIN = 4.1 V → 9.1 V 3.0 20 mV
Load Reg Load Regulation

IO = 5 mA → 60 mA (Note 1) 10 50 mV
IO = 5 mA → 100 mA 20 100 mV
IO = 5 mA → 150 mA 30 160 mV

RR Ripple Rejection 100 mV(rms), IO = 10 mA 55 dB
∆VO/∆T

Output Voltage VIN = 4.6 V, IO = 10 mA 0.05 mV/ °C

A

Temperature Dependency -20 °C ≤ TA ≤ + 75 °C

V

NO

Output Noise Voltage 10 Hz < f < 80 kHz, 30 µV(rms)

IO = 30 mA

V

REF

Noise Bypass Terminal Voltage 1.25 V

Control Terminal Specification

I

CONT

V

CONT

Control Current Output on, V
Control Voltage

Output on 1.8 V

= 1.8 V 12 30 µA

CONT

Output off 0.6 V

t

r

Note 1: This is a pulse measurement where TJ is constant. The output change due to temperature is not included.

January, 1996 TOKO, Inc.

Output Rise Time IO = 30 mA, 0.3 ms

V

= 0 V → 1.8 V

CONT

1-4-96

Page 9

TK112xxA

TK11233A ELECTRICAL CHARACTERISTICS

Test conditions: T

SYMBOL PARAMETER TEST CONDITIONS MIN TYP MAX UNITS

= 25 °C, VIN = 4.3 V, CP = 0.1 µF, unless otherwise specified.

A

I

IN

I

STBY

V

O

V

DROP

Quiescent Current IO = 0 mA, Except I

CONT

170 350 µA
Standby Current VIN = 8 V, at output off 0.1 µA
Output Voltage IO = 30 mA 3.22 3.30 3.38 V
Dropout Voltage

IO = 60 mA 0.16 0.26 V
IO = 150 mA 0.29 0.4 V

I
I

O
OR

Output Current V

= 3 V 180 240 mA

OUT

Recommended Output Current 150 mA

Line Reg Line Regulation VIN = 4.3 V → 9.3 V 3.0 20 mV
Load Reg Load Regulation

IO = 5 mA → 60 mA (Note 1) 10 50 mV
IO = 5 mA → 100 mA 20 100 mV
IO = 5 mA → 150 mA 30 160 mV

RR Ripple Rejection 100 mV(rms), IO = 10 mA 55 dB
∆VO/∆T

Output Voltage VIN = 4.8 V, IO = 10 mA 0.05 mV/ °C

A

Temperature Dependency -20 °C ≤ TA ≤ + 75 °C

V

NO

Output Noise Voltage 10 Hz < f < 80 kHz, 30 µV(rms)

IO = 30 mA

V

REF

Noise Bypass Terminal Voltage 1.25 V

Control Terminal Specification

I

CONT

V

CONT

Control Current Output on, V
Control Voltage

Output on 1.8 V

= 1.8 V 12 30 µA

CONT

Output off 0.6 V

t

r

Note 1: This is a pulse measurement where TJ is constant. The output change due to temperature is not included.

Page 10

Output Rise Time IO = 30 mA, 0.3 ms

V

= 0 V → 1.8 V

CONT

1-4-96

January, 1996 TOKO, Inc.

TK112xxA

TK11235A ELECTRICAL CHARACTERISTICS

Test conditions: T

SYMBOL PARAMETER TEST CONDITIONS MIN TYP MAX UNITS

= 25 °C, VIN = 4.5 V, CP = 0.1 µF, unless otherwise specified.

A

I

IN

I

STBY

V

O

V

DROP

Quiescent Current IO = 0 mA, Except I

CONT

170 350 µA
Standby Current VIN = 8 V, at output off 0.1 µA
Output Voltage IO = 30 mA 3.42 3.50 3.58 V
Dropout Voltage

IO = 60 mA 0.16 0.26 V
IO = 150 mA 0.29 0.4 V

I
I

O
OR

Output Current V

= 3.2 V 180 240 mA

OUT

Recommended Output Current 150 mA

Line Reg Line Regulation VIN = 4.5 V → 9.5 V 3.0 20 mV
Load Reg Load Regulation

IO = 5 mA → 60 mA (Note 1) 10 50 mV
IO = 5 mA → 100 mA 20 100 mV

IO = 5 mA → 150 mA 30 160 mV

RR Ripple Rejection 100 mV(rms), IO = 10 mA 55 dB
∆VO/∆T

Output Voltage VIN = 5 V, IO = 10 mA 0.05 mV/ °C

A

Temperature Dependency -20 °C ≤ TA ≤ + 75 °C

V

NO

Output Noise Voltage 10 Hz < f < 80 kHz, 30 µV(rms)

IO = 30 mA

V

REF

Noise Bypass Terminal Voltage 1.25 V

Control Terminal Specification

I

CONT

V

CONT

Control Current Output on, V
Control Voltage

Output on 1.8 V

= 1.8 V 12 30 µA

CONT

Output off 0.6 V

t

r

Note 1: This is a pulse measurement where TJ is constant. The output change due to temperature is not included.

January, 1996 TOKO, Inc.

Output Rise Time IO = 30 mA, 0.3 ms

V

= 0 V → 1.8 V

CONT

1-4-96

Page 11