Datasheet TK11950MTL, TK11948MTL, TK11940MTL, TK11935MTL, TK11930MTL Datasheet (TOKO)

TK119xx

01S

VOLTAGE REGULATOR WITH RESET OUTPUT

FEATURES

■ Very Low Dropout Voltage

■ Reset Output for Microprocessor

■ Very Low Quiescent Current (No Load)

■ Internal Thermal/Overload Shutdown

■ Low Noise Voltage

■ Input and Output Voltage Sense

■ ± 2.5 % Output Voltage Accuracy

■ CMOS or TTL On/Off Control

■ High Speed On/Off Transient (50 µs typ.)

DESCRIPTION

The TK119xx series are low power, linear regulators with
built-in electronic switches. Built-in voltage comparators
provide a reset logic ”low” level whenever the input or
output voltage falls outside internally preset limits. The
internal electronic switch can be controlled by CMOS or
TLL levels. The device is in the “off” state when the control
pin is biased “high”.

An internal PNP pass-transistor is used in order to achieve
low dropout voltage (typically 200 mV at 50 mA load
current). The device has very low quiescent current
(130 µA) in the “on” mode with no load and 2 mA with 30
mA load. The quiescent current is typically 4 mA at 60 mA
load. The current consumption in the “off” mode is 65 µA.
An internal thermal shutdown circuit limits the junction
temperature to below 150 oC. The load current is internally
monitored and the device will shut down (no load current)
in the presence of a short circuit at the output. The output
noise is very low at 100 dB down from V
external noise bypass capacitor is used. The TK119xx is
available in a miniature SOT-23L surface mount package.

ORDERING INFORMATION

when an

OUT

FEA TURES

■ Battery Powered Systems

■ Cellular Telephones

■ Pagers

■ Personal Communications Equipment

■ Portable Instrumentation

■ Portable Consumer Equipment

■ Radio Control Systems

■ Toys

■ Low Voltage Systems

TK119xx

NOISE

BYPASS

CONTROL

RESET

OUTPUT

BLOCK DIAGRAM

V

IN

CONTROL

SHUT

DOWN

THERMAL

PROTECTION

ERROR

DETECTION

V

IN

GND

V

OUT

V

OUT

RESET

OUTPUT

VOLTAGE CODE

22 = 2.25 V 35 = 2.5 V
27 = 2.75 V 40 = 4.0 V
30 = 3.00 V 48 = 4.8 V
32 = 3.25 V 50 = 5.0 V

TK119 M

Tape/Reel Code

Voltage Code

TAPE/REEL CODE

TL: Tape Left

BANDGAP

REFERENCE

NOISE

BYPASS

GND

January 1999 TOKO, Inc. Page 1

TK119xx

ABSOLUTE MAXIMUM RATINGS

Supply Voltage ......................................................... 17 V

Operating Voltage Range............................... 1.8 to 16 V

Power Dissipation (Note 1) ................................ 400 mW

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

TK11922 ELECTRICAL CHARACTERISTICS

Test conditions: V

LOBMYSRETEMARAPSNOITIDNOCTSETNIMPYTXAMSTINU

= 3.25 V, C

IN

= 10 µF, C

L

= 0.01 µF, T

N

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

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

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

= 25 °C, unless otherwise specified.

A

I

Q

I

DNG

I

YBTS

V

TUO

V

PORD

I

TUO

tnerruCtnecseiuQ

tnerruCdnuorGI

tnerruCybdnatSFFOtuptuO59061Aµ

egatloVtuptuO

egatloVtuoporDI

tnerruCtuptuO 001Am

geReniLnoitalugeReniLV

geRdaoLnoitalugeRdaoLI

∆V

TUO

/∆T

tneiciffeoCerutarepmeT 2.0±C°/Vm

RRnoitcejeRelppiRC,zH004=f

V

ON

V

TED

V

)RRE(TED

ecnareloT

egatloVesioNtuptuO

dlohserhTrotceteDegatloV

I

TUO

V

NI

TUO

I

TUO

I

TUO

TUO

NI

TUO

C

N

Am0=041003Aµ

I,V52.1=

TUO

Am0=083009Aµ

Am06=5.201Am

T,Am1=

A

C°52=71.252.233.2V

03-,Am1= ≤ TA≤ C°0831.252.273.2V

Am03=061053Vm

V52.21ot52.3=505Vm

Am08ot1=02001Vm

L

zH01 ≤ f ≤ C,zHk001

Fµ01=86Bd

L

,Fµ01=

Fµ10.0=

dlohserhTrotceteDegatloVwoL V

4-V

05smrVµ

59.0xV

TUO

TED

4+%

V

TESER

egatloVnoitarutaSI

GALF

Aµ001=2.04.0V

SNOITACIFICEPSLANIMRETLORTNOC

I

TNOC

V
V

T

Note 1: Power dissipation is 400 mW when mounted as recommended. Derate at 3.2 mW/°C for operation above 25°C.

)NO(TNOC

)FFO(TNOC

R

emiTesiRtuptuO

tnerruClanimreTlortnoC

V

)NO(egatloVlortnoCNOtuptuO6.0V

)FFO(egatloVlortnoCFFOtuptuO2.2V

I

)NOotFFO(

TUO

C

N

V

V5=52001Aµ

TNOC

V61=54051Aµ

TNOC

C,Am03=

L

Fµ1.0=

,Fµ1.0=

05sµ

Page 2 January 1999 TOKO, Inc.

TK11927 ELECTRICAL CHARACTERISTICS

Test conditions: V

LOBMYSRETEMARAPSNOITIDNOCTSETNIMPYTXAMSTINU

= 3.75 V, C

IN

= 10 µF, C

L

= 0.01 µF, T

N

= 25 °C, unless otherwise specified.

A

TK119xx

I

Q

I

DNG

I

YBTS

V

TUO

V

PORD

I

TUO

tnerruCtnecseiuQ

tnerruCdnuorGI

tnerruCybdnatSFFOtuptuO59061Aµ

egatloVtuptuO

egatloVtuoporDI

tnerruCtuptuO 001Am

geReniLnoitalugeReniLV

geRdaoLnoitalugeRdaoLI

∆V

TUO

/∆T

tneiciffeoCerutarepmeT 2.0±C°/Vm

RRnoitcejeRelppiRC,zH004=f

V

ON

V

TED

V

)RRE(TED

ecnareloT

egatloVesioNtuptuO

dlohserhTrotceteDegatloV

I

TUO

V

NI

TUO

I

TUO

I

TUO

TUO

NI

TUO

C

N

Am0=041003Aµ

I,V57.1=

TUO

Am0=083009Aµ

Am06=5.201Am

T,Am1=

A

C°52=76.257.238.2V

03-,Am1= ≤ TA≤ C°0836.257.278.2V

Am03=061053Vm

V57.21ot57.3=505Vm

Am08ot1=02001Vm

L

zH01 ≤ f ≤ C,zHk001

Fµ01=86Bd

L

,Fµ01=

Fµ10.0=

dlohserhTrotceteDegatloVwoL V

4-V

05smrVµ

59.0xV

TUO

TED

4+%

V

TESER

egatloVnoitarutaSI

GALF

Aµ001=2.04.0V

SNOITACIFICEPSLANIMRETLORTNOC

I

TNOC

V
V

T

)NO(TNOC

)FFO(TNOC

R

emiTesiRtuptuO

tnerruClanimreTlortnoC

V

)NO(egatloVlortnoCNOtuptuO6.0V

)FFO(egatloVlortnoCFFOtuptuO4.2V

I

)NOotFFO(

TUO

C

N

V

V5=52001Aµ

TNOC

V61=54051Aµ

TNOC

C,Am03=

L

Fµ1.0=

,Fµ1.0=

05sµ

January 1999 TOKO, Inc. Page 3

TK119xx

TK11930 ELECTRICAL CHARACTERISTICS

Test conditions: V

LOBMYSRETEMARAPSNOITIDNOCTSETNIMPYTXAMSTINU

= 4.0 V, C

IN

= 10 µF, C

L

= 0.01 µF, T

N

= 25 °C, unless otherwise specified.

A

I

Q

I

DNG

I

YBTS

V

TUO

V

PORD

I

TUO

tnerruCtnecseiuQ

tnerruCdnuorGI

tnerruCybdnatSFFOtuptuO59061Aµ

egatloVtuptuO

egatloVtuoporDI

tnerruCtuptuO 001Am

geReniLnoitalugeReniLV

geRdaoLnoitalugeRdaoLI

∆V

TUO

/∆T

tneiciffeoCerutarepmeT 2.0±C°/Vm

RRnoitcejeRelppiRC,zH004=f

V

ON

V

TED

V

)RRE(TED

ecnareloT

egatloVesioNtuptuO

dlohserhTrotceteDegatloV

I

TUO

V

NI

TUO

I

TUO

I

TUO

TUO

NI

TUO

C

N

Am0=041003Aµ

I,V0.2=

TUO

Am0=083009Aµ

Am06=5.201Am

T,Am1=

A

C°52=29.20.380.3V

03-,Am1= ≤ TA≤ C°0888.20.321.3V

Am03=061053Vm

V0.31ot0.4=505Vm

Am08ot1=02001Vm

L

zH01 ≤ f ≤ C,zHk001

Fµ01=86Bd

L

,Fµ01=

Fµ10.0=

dlohserhTrotceteDegatloVwoL V

4-V

05smrVµ

59.0xV

TUO

TED

4+%

V

TESER

egatloVnoitarutaSI

GALF

Aµ001=2.04.0V

SNOITACIFICEPSLANIMRETLORTNOC

I

TNOC

V
V

T

)NO(TNOC

)FFO(TNOC

R

emiTesiRtuptuO

tnerruClanimreTlortnoC

V

)NO(egatloVlortnoCNOtuptuO6.0V

)FFO(egatloVlortnoCFFOtuptuO4.2V

I

)NOotFFO(

TUO

C

N

V

V5=52001Aµ

TNOC

V61=54051Aµ

TNOC

C,Am03=

L

Fµ1.0=

,Fµ1.0=

05sµ

Page 4 January 1999 TOKO, Inc.

TK11932 ELECTRICAL CHARACTERISTICS

Test conditions: V

LOBMYSRETEMARAPSNOITIDNOCTSETNIMPYTXAMSTINU

= 4.25 V, C

IN

= 10 µF, C

L

= 0.01 µF, T

N

= 25 °C, unless otherwise specified.

A

TK119xx

I

Q

I

DNG

I

YBTS

V

TUO

V

PORD

I

TUO

tnerruCtnecseiuQ

tnerruCdnuorGI

tnerruCybdnatSFFOtuptuO59061Aµ

egatloVtuptuO

egatloVtuoporDI

tnerruCtuptuO 001Am

geReniLnoitalugeReniLV

geRdaoLnoitalugeRdaoLI

∆V

TUO

/∆T

tneiciffeoCerutarepmeT 2.0±C°/Vm

RRnoitcejeRelppiRC,zH004=f

V

ON

V

TED

V

)RRE(TED

ecnareloT

egatloVesioNtuptuO

dlohserhTrotceteDegatloV

I

TUO

V

NI

TUO

I

TUO

I

TUO

TUO

NI

TUO

C

N

Am0=041003Aµ

I,V52.2=

TUO

Am0=083009Aµ

Am06=5.201Am

T,Am1=

A

C°52=71.352.333.3V

03-,Am1= ≤ TA≤ C°0831.352.373.3V

Am03=061053Vm

V52.31ot52.4=505Vm

Am08ot1=02001Vm

L

zH01 ≤ f ≤ C,zHk001

Fµ01=86Bd

L

,Fµ01=

Fµ10.0=

dlohserhTrotceteDegatloVwoL V

4-V

05smrVµ

59.0xV

TUO

TED

4+%

V

TESER

egatloVnoitarutaSI

GALF

Aµ001=2.04.0V

SNOITACIFICEPSLANIMRETLORTNOC

I

TNOC

V
V

T

)NO(TNOC

)FFO(TNOC

R

emiTesiRtuptuO

tnerruClanimreTlortnoC

V

)NO(egatloVlortnoCNOtuptuO6.0V

)FFO(egatloVlortnoCFFOtuptuO4.2V

I

)NOotFFO(

TUO

C

N

V

V5=52001Aµ

TNOC

V61=54051Aµ

TNOC

C,Am03=

L

Fµ1.0=

,Fµ1.0=

05sµ

January 1999 TOKO, Inc. Page 5

TK119xx

TK11935 ELECTRICAL CHARACTERISTICS

Test conditions: V

LOBMYSRETEMARAPSNOITIDNOCTSETNIMPYTXAMSTINU

= 4.5 V, C

IN

= 10 µF, C

L

= 0.01 µF, T

N

= 25 °C, unless otherwise specified.

A

I

Q

I

DNG

I

YBTS

V

TUO

V

PORD

I

TUO

tnerruCtnecseiuQ

tnerruCdnuorGI

tnerruCybdnatSFFOtuptuO59061Aµ

egatloVtuptuO

egatloVtuoporDI

tnerruCtuptuO 001Am

geReniLnoitalugeReniLV

geRdaoLnoitalugeRdaoLI

∆V

TUO

/∆T

tneiciffeoCerutarepmeT 2.0±C°/Vm

RRnoitcejeRelppiRC,zH004=f

V

ON

V

TED

V

)RRE(TED

ecnareloT

egatloVesioNtuptuO

dlohserhTrotceteDegatloV

I

TUO

V

NI

TUO

I

TUO

I

TUO

TUO

NI

TUO

C

N

Am0=041003Aµ

I,V5.2=

TUO

Am0=083009Aµ

Am06=5.201Am

T,Am1=

A

C°52=14.305.395.3V

03-,Am1= ≤ TA≤ C°0873.305.336.3V

Am03=061053Vm

V5.31ot5.4=505Vm

Am08ot1=02001Vm

L

zH01 ≤ f ≤ C,zHk001

Fµ01=86Bd

L

,Fµ01=

Fµ10.0=

dlohserhTrotceteDegatloVwoL V

4-V

05smrVµ

59.0xV

TUO

TED

4+%

V

TESER

egatloVnoitarutaSI

GALF

Aµ001=2.04.0V

SNOITACIFICEPSLANIMRETLORTNOC

I

TNOC

V
V

T

)NO(TNOC

)FFO(TNOC

R

emiTesiRtuptuO

tnerruClanimreTlortnoC

V

)NO(egatloVlortnoCNOtuptuO6.0V

)FFO(egatloVlortnoCFFOtuptuO4.2V

I

)NOotFFO(

TUO

C

N

V

V5=52001Aµ

TNOC

V61=54051Aµ

TNOC

C,Am03=

L

Fµ1.0=

,Fµ1.0=

05sµ

Page 6 January 1999 TOKO, Inc.

TK11940 ELECTRICAL CHARACTERISTICS

Test conditions: V

LOBMYSRETEMARAPSNOITIDNOCTSETNIMPYTXAMSTINU

= 5.0 V, C

IN

= 10 µF, C

L

= 0.01 µF, T

N

= 25 °C, unless otherwise specified.

A

TK119xx

I

Q

I

DNG

I

YBTS

V

TUO

V

PORD

I

TUO

tnerruCtnecseiuQ

tnerruCdnuorGI

tnerruCybdnatSFFOtuptuO59061Aµ

egatloVtuptuO

egatloVtuoporDI

tnerruCtuptuO 001Am

geReniLnoitalugeReniLV

geRdaoLnoitalugeRdaoLI

∆V

TUO

/∆T

tneiciffeoCerutarepmeT 2.0±C°/Vm

RRnoitcejeRelppiRC,zH004=f

V

ON

V

TED

V

)RRE(TED

ecnareloT

egatloVesioNtuptuO

dlohserhTrotceteDegatloV

I

TUO

V

NI

TUO

I

TUO

I

TUO

TUO

NI

TUO

C

N

Am0=041003Aµ

I,V0.3=

TUO

Am0=083009Aµ

Am06=5.201Am

T,Am1=

A

C°52=09.300.401.4V

03-,Am1= ≤ TA≤ C°0868.300.441.4V

Am03=061053Vm

V0.41ot0.5=505Vm

Am08ot1=02001Vm

L

zH01 ≤ f ≤ C,zHk001

Fµ01=86Bd

L

,Fµ01=

Fµ10.0=

dlohserhTrotceteDegatloVwoL V

4-V

05smrVµ

59.0xV

TUO

TED

4+%

V

TESER

egatloVnoitarutaSI

GALF

Aµ001=2.04.0V

SNOITACIFICEPSLANIMRETLORTNOC

I

TNOC

V
V

T

)NO(TNOC

)FFO(TNOC

R

emiTesiRtuptuO

tnerruClanimreTlortnoC

V

)NO(egatloVlortnoCNOtuptuO6.0V

)FFO(egatloVlortnoCFFOtuptuO4.2V

I

)NOotFFO(

TUO

C

N

V

V5=52001Aµ

TNOC

V61=54051Aµ

TNOC

C,Am03=

L

Fµ1.0=

,Fµ1.0=

05sµ

January 1999 TOKO, Inc. Page 7

TK119xx

TK11948 ELECTRICAL CHARACTERISTICS

Test conditions: V

LOBMYSRETEMARAPSNOITIDNOCTSETNIMPYTXAMSTINU

= 5.8 V, C

IN

= 10 µF, C

L

= 0.01 µF, T

N

= 25 °C, unless otherwise specified.

A

I

Q

I

DNG

I

YBTS

V

TUO

V

PORD

I

TUO

tnerruCtnecseiuQ

tnerruCdnuorGI

tnerruCybdnatSFFOtuptuO59061Aµ

egatloVtuptuO

egatloVtuoporDI

tnerruCtuptuO 001Am

geReniLnoitalugeReniLV

geRdaoLnoitalugeRdaoLI

∆V

TUO

/∆T

tneiciffeoCerutarepmeT 2.0±C°/Vm

RRnoitcejeRelppiRC,zH004=f

V

ON

V

TED

V

)RRE(TED

ecnareloT

egatloVesioNtuptuO

dlohserhTrotceteDegatloV

I

TUO

V

NI

TUO

I

TUO

I

TUO

TUO

NI

TUO

C

N

Am0=041003Aµ

I,V8.3=

TUO

Am0=083009Aµ

Am06=5.201Am

T,Am1=

A

C°52=86.408.429.4V

03-,Am1= ≤ TA≤ C°0836.408.479.4V

Am03=061053Vm

V8.41ot8.5=505Vm

Am08ot1=02001Vm

L

zH01 ≤ f ≤ C,zHk001

Fµ01=86Bd

L

,Fµ01=

Fµ10.0=

dlohserhTrotceteDegatloVwoL V

4-V

05smrVµ

59.0xV

TUO

TED

4+%

V

TESER

egatloVnoitarutaSI

GALF

Aµ001=2.04.0V

SNOITACIFICEPSLANIMRETLORTNOC

I

TNOC

V
V

T

)NO(TNOC

)FFO(TNOC

R

emiTesiRtuptuO

tnerruClanimreTlortnoC

V

)NO(egatloVlortnoCNOtuptuO6.0V

)FFO(egatloVlortnoCFFOtuptuO4.2V

I

)NOotFFO(

TUO

C

N

V

V5=52001Aµ

TNOC

V61=54051Aµ

TNOC

C,Am03=

L

Fµ1.0=

,Fµ1.0=

05sµ

Page 8 January 1999 TOKO, Inc.

TK11950 ELECTRICAL CHARACTERISTICS

Test conditions: V

LOBMYSRETEMARAPSNOITIDNOCTSETNIMPYTXAMSTINU

= 6.0 V, C

IN

= 10 µF, C

L

= 0.01 µF, T

N

= 25 °C, unless otherwise specified.

A

TK119xx

I

Q

I

DNG

I

YBTS

V

TUO

V

PORD

I

TUO

tnerruCtnecseiuQ

tnerruCdnuorGI

tnerruCybdnatSFFOtuptuO59061Aµ

egatloVtuptuO

egatloVtuoporDI

tnerruCtuptuO 001Am

geReniLnoitalugeReniLV

geRdaoLnoitalugeRdaoLI

∆V

TUO

/∆T

tneiciffeoCerutarepmeT 2.0±C°/Vm

RRnoitcejeRelppiRC,zH004=f

V

ON

V

TED

V

)RRE(TED

ecnareloT

egatloVesioNtuptuO

dlohserhTrotceteDegatloV

I

TUO

V

NI

TUO

I

TUO

I

TUO

TUO

NI

TUO

C

N

Am0=041003Aµ

I,V0.4=

TUO

Am0=083009Aµ

Am06=5.201Am

T,Am1=

A

C°52=578.4000.5521.5V

03-,Am1= ≤ TA≤ C°08528.4000.5571.5V

Am03=061053Vm

V0.51ot0.6=505Vm

Am08ot1=02001Vm

L

zH01 ≤ f ≤ C,zHk001

Fµ01=86Bd

L

,Fµ01=

Fµ10.0=

dlohserhTrotceteDegatloVwoL V

4-V

05smrVµ

59.0xV

TUO

TED

4+%

V

TESER

egatloVnoitarutaSI

GALF

Aµ001=2.04.0V

SNOITACIFICEPSLANIMRETLORTNOC

I

TNOC

V
V

T

)NO(TNOC

)FFO(TNOC

R

emiTesiRtuptuO

tnerruClanimreTlortnoC

V

)NO(egatloVlortnoCNOtuptuO6.0V

)FFO(egatloVlortnoCFFOtuptuO4.2V

I

)NOotFFO(

TUO

C

N

V

V5=52001Aµ

TNOC

V61=54051Aµ

TNOC

C,Am03=

L

Fµ1.0=

,Fµ1.0=

05sµ

January 1999 TOKO, Inc. Page 9

TK119xx

TEST CIRCUIT

V

V

IN

+

+

1 µF

V

OUT

+

C

10 µF

L

I

OUT

OUT

V

CONT

NOISE BYPASS

C

I

CONT

+

N

0.01 µF

CONT

RESET OUTPUT

220 k

TIMING DIAGRAM

PRINCIPLE OF OPERATION

OUTPUT VOLTAGE 5 V

GLITCH

+

RESET OUTPUT

NOT

VALID

~5 V ~5 V

GLITCH

INPUT VOLTAGE

NOT

VALID

t

Page 10 January 1999 TOKO, Inc.

TYPICAL PERFORMANCE CHARACTERISTICS

I

IN

(µA)

200

INPUT CURRENT AND CONTROL

CURRENT

VS.

CONTROL VOLTAGE

V

CONT

(V)

0 2.5 5.0

0

100

SHUTDOWN POINT

I

IN

I

CONT

I

CONT

(µA)

100

50

0

TA = 25 °C, unless otherwise specified.

TK119xx

GROUND CURRENT

OUTPUT CURRENT

10

(mA)

5

GND

I

0

0 50 100

I

(mA)

OUT

SATURATION VOLTAGE

RESET OUTPUT CURRENT

250

200

150

(mV)

SAT

100

V

VIN = 1 V

2 V

3 V

5 V

6 V

VS.

VS.

DROPOUT VOLTAGE

OUTPUT CURRENT

500

400

300

(mV)

200

DROP

V

100

0

0 50 100

I

(mA)

OUT

OUTPUT VOLTAGE

OUTPUT CURRENT

5

4

(V)

3

OUT

V

2

VS.

VS.

-50

-100

NOISE (dB)

NOISE LEVEL

FREQUENCY (TK11950)

VS.

I

= 25 mA

OUT

CL = 0.1 µF
CN = 0.1 µF

50

0

0 0.5 1.0

I

(mA)

FLAG

LINE VOLTAGE STEP RESPONSE

7 V

IN

V

6 V

(20 mV / DIV)

OUT

V

January 1999 TOKO, Inc. Page 11

OUT

V

TIME (50 µs/DIV)

1

0

0 100 200

I

(mA)

OUT

LOAD CURRENT STEP RESPONSE

OUT

I

0 mA

(100 mV / DIV)

OUT

V

OUT

V

50 mA

TIME (50 µs/DIV)

0 500 k 1 M

CONT

V

0 V

CL = .1 µF

(1 V / DIV)

OUT

V

OUT

V

CL = 3.3 µF
CN = 0.1 µF

f (Hz)

TURN-ON TIME VS. OUTPUT

CAPACITOR

2.4 V

1 µF

TIME (50 µs/DIV)

I

OUT

15 µF

4.7 µF

= 30 mA

10 µF

TK119xx

I

(

A)

I

(

A)

I

(

A)

V

(V)

V

(V)

V

(

V)

119xx

C

L

10

F

V

OUT

V

IN

0.1

F

RIPPLE REJECTION CIRCUIT

C

N

0.01

F

SW

+

NOISE

CAPACITOR VALUE

300

200

TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)

TA = 25 °C, unless otherwise specified.

VS.

BYPASS

0

RIPPLE REJECTION

FREQUENCY

VS.

150

100

NOISE (µVrms)

50

0

1 pF

10 pF

100 pF

1000 pF

C

N

0.01 µF

GROUND CURRENT (ON MODE)

VS.

TEMPERATURE

10

m

GND

5

I

OUT

= 60 mA

I

= 30 mA

OUT

0

-50 0 50 100
TA (°C)

0.1 µF

CL = 0.1 µF

-50

RR (dB)

CL = 10 µF

-100
100 1 k 10 k 100 k

f (Hz)

STANDBY CURRENT (OFF MODE)

VS.

TEMPERATURE

100

µ

50

STBY

0

-50 0 50 100
TA (°C)

CONTROL CURRENT

VS.

TEMPERATURE

50

40

µ

30

CONT

20

10

V

CONT

V

CONT

= 2.5 V

= 5 V

0

-50 0 50 100
TA (°C)

CONTROL VOLTAGE (OFF POINT)

VS. TEMPERATURE

2.0

4.85

VOLTAGE DETECTOR

VS. TEMPERATURE

500

DROPOUT VOLTAGE

VS.

TEMPERATURE

400

1.0

CONT

DET

4.75

m

300

DROP

200

100

0

-50 0 50 100
TA (°C)

Page 12 January 1999 TOKO, Inc.

4.65

-50 0 50 100
TA (°C)

0

-50 0 50 100

I

OUT

= 60 mA

I

OUT

TA (°C)

= 30 mA

TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)

TK11922

OUTPUT VOLTAGE

OUTPUT CURRENT

2.45

(V)

2.25

OUT

V

2.05

0 50 100

I

(mA)

OUT

VS.

TA = 25 °C, unless otherwise specified.

OUTPUT VOLTAGE

INPUT VOLTAGE

2.35

2.25

2.15

(V)

OUT

2.05

V

1.95

1.85
0 10 20

VIN (V)

VS.

TK119xx

LOW VOLTAGE DETECTOR

INPUT VOLTAGE

5.0

(V)

2.5

DET

V

0

0 2.5 5.0

VIN (V)

V

OUT

VS.

(V)

OUT

V

QUIESCENT CURRENT

INPUT VOLTAGE

500

250

(mA)

Q

I

0

0 10 20

VIN (V)

TK11927

OUTPUT VOLTAGE

OUTPUT CURRENT

2.95

(V)

2.75

OUT

V

VS.

VS.

OUTPUT VOLTAGE

INPUT VOLTAGE

2.75

I

= 0 mA

(V)

2.25

OUT

V

1.75

2.85

2.75

2.65

(V)

OUT

2.55

V

OUT

60 mA

1.75 2.25 3.75
VIN (V)

OUTPUT VOLTAGE

INPUT VOLTAGE

VS.

30 mA

VS.

OUTPUT VOLTAGE

2.25

(V)

2.20

OUT

V

2.15

(V)

DET

V

5.0

2.5

AMBIENT TEMPERATURE

-50 0 50 100
TA (°C)

LOW VOLTAGE DETECTOR

INPUT VOLTAGE

V

VS.

OUT

VS.

(V)

OUT

V

2.45

2.55
0 50 100

I

(mA)

OUT

2.35
0 10 20

VIN (V)

0

0 2.5 5.0

VIN (V)

January 1999 TOKO, Inc. Page 13

TK119xx

TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)

TK11927 (CONT.)

QUIESCENT CURRENT

INPUT VOLTAGE

500

250

(mA)

Q

I

0

0 10 20

VIN (V)

TK11930

OUTPUT VOLTAGE

OUTPUT CURRENT

3.45

(V)

3.25

OUT

V

VS.

VS.

TA = 25 °C, unless otherwise specified.

OUTPUT VOLTAGE

INPUT VOLTAGE

3.25

I

= 0 mA

(V)

2.75

OUT

V

2.25

3.35

3.25

3.15

(V)

OUT

3.05

V

OUT

60 mA

2.25 2.75 3.25
VIN (V)

OUTPUT VOLTAGE

INPUT VOLTAGE

VS.

30 mA

VS.

OUTPUT VOLTAGE

AMBIENT TEMPERATURE

2.80

(V)

2.75

OUT

V

2.70

-50 0 50 100
TA (°C)

LOW VOLTAGE DETECTOR

INPUT VOLTAGE

5.0

(V)

2.5

DET

V

VS.

V

VS.

OUT

(V)

OUT

V

2.95

3.05

0 50 100

I

(mA)

OUT

QUIESCENT CURRENT

INPUT VOLTAGE

500

250

(mA)

Q

I

0

0 10 20

VIN (V)

VS.

2.85
0 10 20

VIN (V)

OUTPUT VOLTAGE

INPUT VOLTAGE

3.75

I

= 0 mA

(V)

3.25

OUT

V

2.75

OUT

60 mA

2.75 3.25 3 .75
VIN (V)

VS.

30 mA

0

0 2.5 5.0

VIN (V)

OUTPUT VOLTAGE

3.30

(V)

3.25

OUT

V

3.20

AMBIENT TEMPERATURE

-50 0 50 100
TA (°C)

VS.

Page 14 January 1999 TOKO, Inc.

TK11932

TK119xx

TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)

TA = 25 °C, unless otherwise specified.

OUTPUT VOLTAGE

OUTPUT CURRENT

3.45

(V)

3.25

OUT

V

3.05

0 50 100

I

(mA)

OUT

QUIESCENT CURRENT

INPUT VOLTAGE

500

250

(mA)

Q

I

VS.

VS.

OUTPUT VOLTAGE

INPUT VOLTAGE

3.35

3.25

3.15

(V)

OUT

3.05

V

2.95

2.85
0 10 20

VIN (V)

OUTPUT VOLTAGE

INPUT VOLTAGE

3.75

I

= 0 mA

(V)

3.25

OUT

V

OUT

VS.

VS.

30 mA

LOW VOLTAGE DETECTOR

INPUT VOLTAGE

5.0

(V)

2.5

DET

V

0

0 2.5 5.0

VIN (V)

OUTPUT VOLTAGE

3.30

(V)

3.25

OUT

V

AMBIENT TEMPERATURE

VS.

V

VS.

OUT

(V)

OUT

V

60 mA

0

0 10 20

VIN (V)

2.75

2.75 3.25 3 .75
VIN (V)

3.20

-50 0 50 100
TA (°C)

TK11935

V

VS.

OUT

OUTPUT VOLTAGE

OUTPUT CURRENT

3.7

(V)

3.5

OUT

V

3.3

0 50 100

I

(mA)

OUT

VS.

OUTPUT VOLTAGE

INPUT VOLTAGE

3.6

3.5

3.4

(V)

OUT

3.3

V

3.2

3.1
0 10 20

VIN (V)

VS.

LOW VOLTAGE DETECTOR

INPUT VOLTAGE

5.0

(V)

2.5

DET

V

0

0 2.5 5.0

VIN (V)

January 1999 TOKO, Inc. Page 15

(V)

OUT

V

TK119xx

V

DET

(V)

5.0

LOW VOLTAGE DETECTOR

VS.

INPUT VOLTAGE

VIN (V)

0 2.5 5.0

0

2.5

V

OUT

V

OUT

(V)

TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)

TK11935 (CONT.)

QUIESCENT CURRENT

INPUT VOLTAGE

500

250

(mA)

Q

I

0

0 10 20

VIN (V)

TK11940

VS.

TA = 25 °C, unless otherwise specified.

OUTPUT VOLTAGE

INPUT VOLTAGE

4.0

I

= 0 mA

(V)

OUT

V

OUT

3.5

60 mA

3.0

3.0 3.5 4.0
VIN (V)

VS.

30 mA

OUTPUT VOLTAGE

AMBIENT TEMPERATURE

3.55

(V)

3.50

OUT

V

3.45

-50 0 50 100
TA (°C)

VS.

OUTPUT VOLTAGE

OUTPUT CURRENT

4.2

(V)

4.0

OUT

V

3.8

0 50 100

QUIESCENT CURRENT

500

250

(mA)

Q

I

I

(mA)

OUT

INPUT VOLTAGE

VS.

VS.

OUTPUT VOLTAGE

INPUT VOLTAGE

4.1

4.0

3.9

(V)

OUT

3.8

V

3.7

3.6
0 10 20

VIN (V)

OUTPUT VOLTAGE

INPUT VOLTAGE

4.5

I

= 0 mA

(V)

OUT

V

OUT

4.0

VS.

VS.

30 mA

4.05

(V)

4.00

OUT

V

OUTPUT VOLTAGE

AMBIENT TEMPERATURE

VS.

60 mA

0

0 10 20

VIN (V)

3.5

3.5 4.0 4.5
VIN (V)

3.95

-50 0 50 100
TA (°C)

Page 16 January 1999 TOKO, Inc.

TK11948

5.0

TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)

TA = 25 °C, unless otherwise specified.

OUTPUT VOLTAGE

OUTPUT CURRENT

VS.

OUTPUT VOLTAGE

INPUT VOLTAGE

4.9

4.8

VS.

5.0

TK119xx

LOW VOLTAGE DETECTOR

INPUT VOLTAGE

VS.

(V)

4.8

OUT

V

4.6

0 50 100

I

(mA)

OUT

QUIESCENT CURRENT

INPUT VOLTAGE

500

250

(mA)

Q

I

0

0 10 20

VIN (V)

TK11950

OUTPUT VOLTAGE

OUTPUT CURRENT

5.2

VS.

VS.

4.7

(V)

OUT

4.6

V

4.5

4.4
0 10 20

VIN (V)

OUTPUT VOLTAGE

INPUT VOLTAGE

5.3

I

= 0 mA

(V)

OUT

V

OUT

4.8

60 mA

4.3

4.3 4.8 5.3
VIN (V)

OUTPUT VOLTAGE

INPUT VOLTAGE

5.1

5.0

VS.

30 mA

VS.

(V)

V

2.5

DET

V

0

0 2.5 5.0

VIN (V)

OUTPUT VOLTAGE

4.85

(V)

4.80

OUT

V

4.75

5.0

AMBIENT TEMPERATURE

-50 0 50 100
TA (°C)

LOW VOLTAGE DETECTOR

INPUT VOLTAGE

OUT

VS.

VS.

(V)

OUT

V

(V)

5.0

OUT

V

4.8

0 50 100

I

(mA)

OUT

4.9

(V)

OUT

4.8

V

4.7

4.6
0 10 20

VIN (V)

(V)

2.5

DET

V

0

0 2.5 5.0

VIN (V)

V

OUT

January 1999 TOKO, Inc. Page 17

(V)

OUT

V

TK119xx

TK11950 (CONT.)

TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)

TA = 25 °C, unless otherwise specified.

QUIESCENT CURRENT

INPUT VOLTAGE

500

250

(mA)

Q

I

0

0 10 20

VIN (V)

VS.

OUTPUT VOLTAGE

INPUT VOLTAGE

5.5

I

= 0 mA

(V)

OUT

V

OUT

5.0

60 mA

4.5

4.5 5.0 5.5
VIN (V)

VS.

30 mA

OUTPUT VOLTAGE

AMBIENT TEMPERATURE

5.05

(V)

5.00

OUT

V

4.95

-50 0 50 100
TA (°C)

VS.

Page 18 January 1999 TOKO, Inc.

DEFINITION AND EXPLANATION OF TECHNICAL TERMS

TK119xx

QUIESCENT CURRENT (IQ)

The quiescent current is the current which flows through
the ground terminal under no load conditions (I

GROUND CURRENT (I

GND

)

OUT

= 0 mA).

Ground current is the current which flows through the
ground pin(s). It is defined as IIN - I

, excluding control

OUT

current.

LINE REGULATION (LINE REG)

Line regulation is the relationship between change in
output voltage due to a change in input voltage.

LOAD REGULATION (LOAD REG)

Load regulation is the relationship between change in
output voltage due to a change in load current.

DROPOUT VOLTAGE (V

DROP

)

This is a measure of how well the regulator performs as the
input voltage decreases. The smaller the number, the
further the input voltage can decrease before regulation
problems occur. Nominal output voltage is first measured
when VIN = V

OUT(TYP)

+ 1 at a chosen load current. When
the output voltage has dropped 100 mV from the nominal,
VIN - V

is the dropout voltage. This voltage is affected

OUT

by load current and junction temperature.

PACKAGE POWER DISSIPATION (PD)

This is the power dissipation level at which the thermal
sensor is activated. The IC contains an internal thermal
sensor which monitors the junction temperature. When
the junction temperature exceeds the monitor threshold of
150 °C, the IC is shut down. The junction temperature
rises as the difference between the input power (VIN x IIN)
and the output power (V

OUT

x I

) increases. The rate of

OUT

temperature rise is greatly affected by the mounting pad
configuration on the PCB, the board material, and the
ambient temperature. When the IC mounting has good
thermal conductivity, the junction temperature will be low
even if the power dissipation is great. When mounted on
the recommended mounting pad, the power dissipation of
the SOT-23L is increased to 400 mW. For operation at
ambient temperatures over 25 °C, the power dissipation of
the SOT-23L device should be derated at 3.2 mW/°C. To
determine the power dissipation for shutdown when
mounted, attach the device on the actual PCB and
deliberately increase the output current (or raise the input
voltage) until the thermal protection circuit is activated.
Calculate the power dissipation of the device by subtracting
the output power from the input power. These
measurements should allow for the ambient temperature
of the PCB. The value obtained from PD /(150 °C - TA) is the
derating factor. The PCB mounting pad should provide
maximum thermal conductivity in order to maintain low
device temperatures. As a general rule, the lower the
temperature, the better the reliability of the device. The
thermal resistance when mounted is expressed as follows:

OUTPUT NOISE VOLTAGE

Tj = 0jA x PD + T

A

This is the effective AC voltage that occurs on the output
voltage under the condition where the input noise is low
and with a given load, filter capacitor, and frequency
range.

For Toko ICs, the internal limit for junction temperature is
150 °C. If the ambient temperature (TA) is 25 °C, then:

THERMAL PROTECTION

150 °C = 0jA x PD + 25 °C

This is an internal feature which turns the regulator off

0jA = 125 °C/ P

D

when the junction temperature rises above 150 °C. After
the regulator turns off, the temperature drops and the
regulator output turns back on. Under certain conditions,
the output waveform may appear to be an oscillation as the
output turns off and on and back again in succession.

PD is the value when the thermal sensor is activated. A
simple way to determine PD is to calculate VIN x IIN when
the output side is shorted. Input current gradually falls as
temperature rises. You should use the value when thermal
equilibrium is reached.

January 1999 TOKO, Inc. Page 19

TK119xx

DEFINITION AND EXPLANATION OF TECHNICAL TERMS (CONT.)

The range of usable currents can also be found from the
graph below.

(mW)

P

D

3

D

PD

6

4

5

25 50 75 150

TA (°C)

Procedure:

1) Find P

D

2) PD1 is taken to be PD x (~ 0.8 - 0.9)

3) Plot PD1 against 25 °C

4) Connect P

to the point corresponding to the 150 °C

D1

with a straight line.

5) In design, take a vertical line from the maximum

operating temperature (e.g., 75 °C) to the derating
curve.

6) Read off the value of PD against the point at which the

vertical line intersects the derating curve. This is taken
as the maximum power dissipation, DPD.

The maximum operating current is:

I

OUT

= (D

PD

/ (V

IN(MAX) - VOUT

)

500

TA (°C)

MOUNTED

FREE AIR

150

400

300

(mW)

D

200

P

100

0

0 50 100

SOT-23L POWER DISSIPATION

Page 20 January 1999 TOKO, Inc.

APPLICATION INFORMATION

INPUT/OUTPUT DECOUPLING CAPACITOR
CONSIDERATIONS

Voltage regulators require input and output decoupling
capacitors. The required values of these capacitors vary
with application. Capacitors made by different
manufacturers can have different characteristics,
particularly with regard to high frequencies and Equivalent
Series Resistance (ESR) over temperature. The type of
capacitor is also important. For example, a 4.7 µF aluminum
electrolytic may be required for a certain application. If a
tantalum capacitor is used, a lower value of 2.2 µF would
be adequate. It is important to consider the temperature
characteristics of the decoupling capacitors. While Toko
regulators are designed to operate as low as -30 °C, many
capacitors will not operate properly at this temperature.
The capacitance of aluminum electrolytic capacitors may
decrease to 0 at low temperatures. This may cause
oscillation on the output of the regulator since some
capacitance is required to guarantee stability. Thus, it is
important to consider the characteristics of the capacitor
over temperature when selecting decoupling capacitors.

The ESR is another important parameter. The ESR will
increase with temperature but low ESR capacitors are
often larger and more costly. In general, tantalum capacitors
offer lower ESR than aluminum electrolytic, but new low
ESR aluminum electrolytic capacitors are now available
from several manufacturers. Usually a bench test is
sufficient to determine the minimum capacitance required
for a particular application. After taking thermal
characteristics and tolerance into account, the minimum
capacitance value should be approximately two times the
value. The recommended minimum capacitance for the
TK119xx is 2.2 µF for a tantalum capacitor or 3.3 µF for an
aluminum electrolytic. Please note that linear regulators
with a low dropout voltage have high internal loop gains
which require care in guarding against oscillation caused
by insufficient decoupling capacitance. The use of high
quality decoupling capacitors suited for your application
will guarantee proper operation of the circuit.

TK119xx

V

IN

+

SOT-23L BOARD LAYOUT

NOISE BYPASS CAPACITOR SECTION

The noise bypass capacitor (CN) should be connected as
close as possible to pin 1 and ground. The recommended
value for CN is 0.01 µF. The noise bypass terminal has a
high impedance and care should be taken if the noise
bypass capacitor is not used. This terminal is susceptible
to external noise, and oscillation can occur when CN is not
used and the solder pad for this pin is too large.

RESET OUTPUT CONSIDERATIONS

It is important to note the accuracy of the regulator and
voltage detector functions when they are combined within
one IC. The figure below illustrates the voltage regulator
and voltage detector implemented with individual reference
voltages.

V

MAX

GND

GND

CONTROL

RESET

V

OUT

+

V

BOARD LAYOUT

R

MIN

MAX

Copper pattern should be as large as possible. Power
dissipation is 400 mW for the SOT-23L package. A low
ESR capacitor is recommended. For low temperature
operation, select a capacitor with a low ESR at the lowest

R

MIN

operating temperature to prevent oscillation, degradation
of ripple rejection and increase in noise. The minimum

NON-TOKO APPROACH

recommended capacitance is 2.2 µF.
January 1999 TOKO, Inc. Page 21

TK119xx

RESET OUTPUT

V

IN

1 µF

C

N

0.01 µF

+

R

RESET

+

4.7 µF

V

OUT

APPLICATION INFORMATION (CONT.)

Note: V

MIN

- R

≤ 0 is possible, meaning the two ranges

MAX

may overlap.
The figure below illustrates the TK119xx. The TK119xx

utilizes the same reference voltage for both the voltage
regulator and the voltage detector functions. As a result,
the detector voltage is always constant (V

x 0.95 %)

OUT

from the output voltage. With this approach, the two
ranges do not overlap.

V

MAX

V

MIN

R

MAX

R

MIN

TOKO APPROACH

TYPICAL APPLICATIONS

CONTROL FUNCTION UTILIZED

HANDLING MOLDED RESIN PACKAGES

All plastic molded packages absorb some moisture from
the air. If moisture absorption occurs prior to soldering the
device into the printed circuit board, increased separation
of the lead from the plastic molding may occur, degrading
the moisture barrier characteristics of the device. This
property of plastic molding compounds should not be
overlooked, particularly in the case of very small packages,
where the plastic is very thin.

In order to preserve the original moisture barrier properties
of the package, devices are stored and shipped in moisture
proof bags filled with dry air. The bags should not be
opened or damaged prior to the actual use of the devices.
If this is unavoidable, the devices should be stored in a low
relative humidity environment (40 to 65%) or in an enclosed
environment with desiccant.

CONTROL FUNCTION NOT UTILIZED

V

IN

+

CMOS OR
TTL GATE

1 µF

LOW = ON

C

0.01 µF

R

RESET

N

+

4.7 µF

RESET OUTPUT

V

OUT

LOW VOLTAGE SHUTDOWN

V

IN

Note: Parallel connection
of control pins is allowed

+

1 µF

if all devices use identical
input voltages.

39 K ≤ R
Choose for correct High
Logic level.

RESET

≤ 220 K

0.01 µF

RESET

SW

C

N

V

OUT

+

4.7 µF

Page 22 January 1999 TOKO, Inc.

PACKAGE OUTLINE

TK119xx

SOT-23L (SOT-23L-6)

+0.15

- 0.05

0.4

456

Product Code

123

e e

0.95 0.95

+0.3

- 0.1

3.5

(3.4)

0.1

0.32
5 PL

M

Marking

Voltage Code

+0.15

- 0.05

Marking Information

Marking
TK11922 G22
TK11927 G27
TK11930 G30

0.6

1.0

3.0
e1

0.1

M

Recommended Mount Pad

0.3

ee

0.95 0.95

2.2

TK11932 G3
TK11935 G35
TK11940 G40
TK11948 G4
TK11950 G5

1.2

Dimensions are shown in millimeters
Tolerance: x.x = ± 0.2 mm (unless otherwise specified)

1.4 max

0 - 0.1

+0.15

- 0.05

0.15

+ 0.3

3.3

15 max

0.4

Toko America, Inc. Headquarters
1250 Feehanville Drive, Mount Prospect, Illinois 60056
Tel: [phone] Fax: [phone]

TOKO AMERICA REGIONAL OFFICES

Midwest Regional Office
Toko America, Inc.
1250 Feehanville Drive
Mount Prospect, IL 60056
Tel: [phone]
Fax: [phone]

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Toko America, Inc.
2480 North First Street , Suite 260
San Jose, CA 95131
Tel: [phone]
Fax: [phone]

Eastern Regional Office
Toko America, Inc.
107 Mill Plain Road
Danbury, CT 06811
Tel: [phone]
Fax: [phone]

Semiconductor Technical Support
Toko Design Center
4755 Forge Road
Colorado Springs, CO 80907
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The information furnished by TOKO, Inc. is believed to be accurate and reliable. However, TOKO reserves the right to make changes or improvements in the design, specification or manufacture of its
products without further notice. TOKO does not assume any liability arising from the application or use of any product or circuit described herein, nor for any infringements of patents or other rights of
third parties which may result from the use of its products. No license is granted by implication or otherwise under any patent or patent rights of TOKO, Inc.

January 1999 TOKO, Inc. Page 23

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