TK113xxCM

GC3-I013B

Page 2

LDO REGULATOR WITH ON/OFF SWITCH

TK113xxCM

1. DESCRIPTION

The TK113xxC series of low dropout (LDO) voltage
regulators are designed for use in battery-powered

equipment, portable communication devices or RF
modules requiring a thermal enhanced SOT23L-6

package. The power dissipation rating is 600mW.
Features include an operating voltage range of +1.8V to
+14V and an output voltage range of 1.5V to 10.0V in

0.1V steps. The maximum continuous current power
rating is 380mA. The load current is internally monitored

and the device will shut down in the attendance of a short
circuit, over-current condition at the output or a junction

temperature exceeds 150ºC.
An internal PNP pass transistor is used to achieve a

typical low dropout voltage of 105mV (typ.) at 100mA
load current and a standby current of typically 0.1µA at

no load.. An external capacitor can be connected to the
noise bypass pin to lower the output noise level to

45µVrms. This device is stable with low ESR ceramic
capacitors.

2. FEATURES

Active Low (Reference : Vin) On/Off Control

Very Good Stability : Ceramic capacitor can be used.

: CL

0.01

F at Vout

2.5V

High Precision Output Voltage (

2% or

±6

0mV)

Excellent Ripple Rejection Ratio: -80dB at 1kHz

Output Current : 300mA (peak 480mA)

Very Low Dropout Voltage : 105mV at Iout=100mA

Wide Operating Voltage Range : 1.8V

14.5V

Very Low Noise with Noise Bypass pin

Short Circuit Protection (Over Current Protection)

Internal Thermal Shutdown (Over Heat Protection)

Reverse Bias Protection

3. APPLICATIONS

Any Electronic Equipment

Battery Powered Systems

Mobile Communication

4. PIN CONFIGURATION

Top View

Vout

Vin

Vcont

GND

*2pin,5pin are connected in the IC.

5. BLOCK DIAGRAM

Bandgap

Reference

Over Heat &

Over Current

Protection

Vin

Vcont

Vout

GND

100k

TK113xxCM

GC3-I013B

Page 3

6. ORDERING INFORMATION

C M

T K 1 1 3

Voltage Code
ex. 3.3V : 33

Package Code
M : SOT23L

(Special Sorting)
N : Noise

Tape / Reel Code

Operating Temp. Range
C : -30

5.0V : 50

I : -40

Standard Voltage (Boldface type)

TK11320CM

TK11321CM

TK11322CM

TK11325CM

TK11326CM

TK11327CM

TK11328CM

TK11329CM

TK11330CM

TK11331CM

TK11332CM

TK11333CM

TK11335CM

TK11338CM

TK11340CM

TK11345CM

TK11347CM

TK11348CM

TK11350CM

TK11355CM

TK11360CM

TK11380CM

*Please contact your authorized TOKO representatives for voltage availability.

If you need a voltage other than the value listed in the above table, please contact TOKO.

7. ABSOLUTE MAXIMUM RATINGS

Ta=25

Parameter

Symbol

Rating

Units

Conditions

Absolute Maximum Ratings
Supply Voltage

Vcc

MAX

-0.4 ~ 16

-0.4 ~ 6

Vout

2.0V

Reverse Bias

Vrev

MAX

-0.4 ~ 12

Vout

2.1V

Np pin Voltage

Vnp

MAX

-0.4 ~ 5

Control pin Voltage

Vcont

MAX

-0.4 ~ 16

Storage Temperature Range

stg

-55 ~ 150

Power Dissipation

600 when mounted on PCB

Internal Limited Tj=150°C *

Operating Condition

-30 ~ 80

C Rank

Operating Temperature Range

-40 ~ 85

I Rank

1.8 ~ 14.5

C Rank

Operating Voltage Range

2.1 ~ 14.5

I Rank

Short Circuit Current

Ishort

500

* P

must be decreased at rate of 4.8mW/

C for operation above 25

The maximum ratings are the absolute limitation values with the possibility of the IC breakage.

When the operation exceeds this standard, quality can not be guaranteed.

TK113xxCM

GC3-I013B

Page 4

8. ELECTRICAL CHARACTERISTICS

8-1. C Rank (TK113xxCMC)

The operation between -30 ~ 80

C is guaranteed with normal test. The parameter with limit value will be guaranteed

with test when manufacturing or SQC(Statistical Quality Control) technique.

Vin=Vout

TYP

+1V,Vcont=Vin-1.8V,Ta=25

Value

Parameter

Symbol

MIN

TYP

MAX

Units

Conditions

Output Voltage

Vout

Refer to TABLE 1 ~ 3

Iout = 5mA

Line Regulation

LinReg

0.0

6.0

Vin = 5V

Load Regulation

LoaReg

Refer to TABLE 1 ~ 3

Iout = 5mA ~ 100mA

Refer to TABLE 1 ~ 3

Iout = 5mA ~ 200mA

Refer to TABLE 1 ~ 3

Iout = 5mA ~ 300mA

Dropout Voltage *1

Vdrop

105

170

Iout = 100mA

170

270

Iout = 200mA

235

370

Iout = 270mA

(2.1V

Vout

2.3V)

235

370

Iout = 300mA

(Vout

2.4V)

Maximum Output Current *2 Iout

MAX

380

480

When (Vout

TYP

0.9)

Supply Current

136

Iout = 0mA

Standby Current

Istandby

0.0

0.1

Vcont = Vin

Quiescent Current

Ignd

1.8

3.0

Iout = 100mA

Control Terminal *3
Control Current

Icont

1.0

5.0

Vcont = Vin -1.8V

Control Voltage

Vcont

Vin-1.8

Vout ON state (Reference :Vin)

Vin-0.6

Vout OFF state (Reference :Vin)

Reference Value
Np Terminal Voltage

Vnp

1.28

Output Voltage / Temp.

Vo/Ta

ppm

Output Noise Voltage
(TK11330CM)

Vno

Vrms

CL=1.0

F, Cnp=0.01

Iout=30mA

Ripple Rejection
(TK11330CM)

R.R

CL=1.0

F, Cnp=0.01

Iout=10mA, 1kHz

Rise Time
(TK11330CM)

100

CL=1.0

F, Cnp=0.01

Vcont : Pulse Wave (100Hz)
Vcont ON

Vout

95% point

*1: The minimum operating Voltage for Vin can be 1.8 V. Also, the minimum voltage required for Vin is
Vin = Vdrop + Vout . As a result, operating at Vout = 2.0 V at the minimum operating voltage is not preferred.

*2: The maximum output current is limited by power dissipation.

*3: The input current decreases to the pA level by connecting the control terminal to GND (Off state).

General Note : Parameters with only typical values are just reference. (Not guaranteed)

General Note : It is possible to decrease the output noise voltage by connecting a capacitor with the noise bypass pin

(Np). The noise level is dependent on the capacitance and capacitor characteristic.

TK113xxCM

GC3-I013B

Page 5

TABLE 1.Preferred Product

MIN

TYP

MAX

TYP

MAX

TYP

MAX

TYP

MAX

TK11320CMC

1.940

2.000

2.060

TK11328CMC

2.740

2.800

2.860

TK11329CMC

2.840

2.900

2.960

TK11330CMC

2.940

3.000

3.060

TK11332CMC

3.136

3.200

3.264

TK11333CMC

3.234

3.300

3.366

101

TK11338CMC

3.724

3.800

3.876

107

TK11340CMC

3.920

4.000

4.080

109

TK11347CMC

4.606

4.700

4.794

117

TK11350CMC

4.900

5.000

5.100

121

Part Number

Output Voltage

Load Regulation

Iout = 100mA

Iout = 200mA

Iout = 300mA

TABLE 2.Limited Availability Product

MIN

TYP

MAX

TYP

MAX

TYP

MAX

TYP

MAX

TK11322CMC

2.140

2.200

2.260

TK11325CMC

2.440

2.500

2.560

TK11327CMC

2.640

2.700

2.760

TK11331CMC

3.038

3.100

3.162

TK11335CMC

3.430

3.500

3.570

103

TK11345CMC

4.410

4.500

4.590

115

TK11380CMC

7.840

8.000

8.160

156

Part Number

Output Voltage

Load Regulation

Iout = 100mA

Iout = 200mA

Iout = 300mA

TABLE 3.Special Product

MIN

TYP

MAX

TYP

MAX

TYP

MAX

TYP

MAX

TK11321CMC

2.040

2.100

2.160

TK11326CMC

2.540

2.600

2.660

TK11348CMC

4.704

4.800

4.896

118

TK11355CMC

5.390

5.500

5.610

127

TK11360CMC

5.880

6.000

6.120

133

Part Number

Output Voltage

Load Regulation

Iout = 100mA

Iout = 200mA

Iout = 300mA

Notice.

Please contact your authorized TOKO representative for voltage availability.
If you need a voltage other than the value listed in the above table, please contact TOKO.

TK113xxCM

GC3-I013B

Page 6

8-2. I Rank (TK113xxCMI)

The operation between -40 ~ 85

C is guaranteed with normal test. The parameter with limit value will be guaranteed

with test when manufacturing or SQC(Statistical Quality Control) technique.

Vin=Vout

TYP

+1V,Vcont=Vin-2.0V, Ta=-40 ~ 85

Value

Parameter

Symbol

MIN

TYP

MAX

Units

Conditions

Output Voltage

Vout

Refer to TABLE 1 ~ 3

Iout = 5mA

Line Regulation

LinReg

0.0

8.0

Vin = 5V

Refer to TABLE 1 ~ 3

Iout = 5mA ~ 100mA

Refer to TABLE 1 ~ 3

Iout = 5mA ~ 200mA

Load Regulation

LoaReg

Refer to TABLE 1 ~ 3

Iout = 5mA ~ 300mA

105

200

Iout = 100mA

(Vout

2.2V)

170

320

Iout = 200mA

(Vout

2.2V)

Dropout Voltage *1

Vdrop

235

440

Iout = 300mA

(Vout

2.4V)

Maximum Output Current *2 Iout

MAX

340

480

When (Vout

TYP

0.9)

Supply Current

144

Iout = 0mA

Standby Current

Istandby

0.0

0.5

Vcont = Vin

Quiescent Current

Ignd

1.8

3.6

Iout = 100mA

Control Terminal *3
Control Current

Icont

1.0

Vcont = Vin 2.0V

Vin-2.0

Vout ON state (Reference :Vin)

Control Voltage

Vcont

Vin-0.4

Vout OFF state (Reference :Vin)

Reference Value
Np Terminal Voltage

Vnp

1.28

Output Voltage / Temp.

Vo/Ta

ppm

Output Noise Voltage
(TK11330CM)

Vno

Vrms

CL=1.0

F, Cnp=0.01

Iout=30mA

Ripple Rejection
(TK11330CM)

R.R

CL=1.0

F, Cnp=0.01

Iout=10mA, 1kHz

Rise Time
(TK11330CM)

100

CL=1.0

F, Cnp=0.01

Vcont : Pulse Wave (100Hz)
Vcont ON

Vout

95% point

*1: The minimum operating Voltage for Vin can be 2.1 V. Also, the minimum voltage required for Vin is

Vin = V drop + Vout . As a result, operating at Vout _ 2.0 V at the minimum operating voltage is not preferred.

*2: The maximum output current is limited by power dissipation.

*3: The input current decreases to the pA level by connecting the control terminal to GND (Off state).

General Note : Parameters with only typical values are just reference. (Not guaranteed)
General Note : It is possible to decrease the output noise voltage by connecting a capacitor with the noise bypass pin

(Np). The noise level is depended on the capacitance and capacitor characteristic.

TK113xxCM

GC3-I013B

Page 7

TABLE 1.Preferred Product

MIN

TYP

MAX

TYP

MAX

TYP

MAX

TYP

MAX

TK11320CMI

1.900

2.000

2.100

122

TK11328CMI

2.700

2.800

2.900

137

TK11329CMI

2.800

2.900

3.000

139

TK11330CMI

2.900

3.000

3.100

141

TK11332CMI

3.100

3.200

3.300

145

TK11333CMI

3.200

3.300

3.400

147

TK11338CMI

3.686

3.800

3.914

157

TK11340CMI

3.880

4.000

4.120

161

TK11347CMI

4.559

4.700

4.841

174

TK11350CMI

4.850

5.000

5.150

180

Part Number

Output Voltage

Laod Regulation

Iout = 100mA

Iout = 200mA

Iout = 300mA

TABLE 2.Limited Availability Product

MIN

TYP

MAX

TYP

MAX

TYP

MAX

TYP

MAX

TK11322CMI

2.100

2.200

2.300

126

TK11325CMI

2.400

2.500

2.600

131

TK11327CMI

2.600

2.700

2.800

135

TK11331CMI

3.000

3.100

3.200

143

TK11335CMI

3.395

3.500

3.605

151

TK11345CMI

4.365

4.500

4.635

170

TK11380CMI

7.760

8.000

8.240

107

238

Part Number

Output Voltage

Load Regulation

Iout = 100mA

Iout = 200mA

Iout = 300mA

TABLE 3.Special Product

MIN

TYP

MAX

TYP

MAX

TYP

MAX

TYP

MAX

TK11321CMI

2.000

2.100

2.200

124

TK11326CMI

2.500

2.600

2.700

133

TK11348CMI

4.656

4.800

4.944

176

TK11355CMI

5.335

5.500

5.665

190

TK11360CMI

5.820

6.000

6.180

199

Part Number

Output Voltage

Load Regulation

Iout = 100mA

Iout = 200mA

Iout = 300mA

Notice.

Please contact your authorized TOKO representative for voltage availability.
If you need a voltage other than the value listed in the above table, please contact TOKO.

TK113xxCM

GC3-I013B

Page 9

11. TYPICAL CHARACTERISTICS

11-1.DC CHARACTERISTICS

Line Regulation

-35

-30

-25

-20

-15

-10

-5

Vin (V)

Vout (mV)

113xx

Cnp

0.1

Iout=5mA

Cin

Vcont

1.8V

Vin
=Vout

TYP

+1V

Vin vs Iin

200

400

600

800

1000

1200

1400

1600

1800

2000

Vin (V)

Iin (

100

120

140

160

Vin (V)

Iin (

Load Regulation

Short Circuit Current

-60

-50

-40

-30

-20

-10

100

150

200

250 300

Iout (mA)

Vout (mV)

100

200 300

400

500 600

Iout (mA)

Vout (V)

Vout
=2, 3, 4, 5, 6, 8V

Vout

2V
3V

4V
5V

6V
8V

Vout

8V
6V
5V

4V
3V

TK113xxCM

GC3-I013B

Page 10

Reverse Bias Current

Vrev(V)

Irev (

113xx

Cnp

0.1

Iout=5mA

Cin

Vcont

1.8V

Vin
=Vout

TYP

+1V

Dropout Voltage

Vin vs Vout Regulation Point

-240

-200

-160

-120

-80

-40

100 150 200 250

300

Iout(mA)

Vdrop(mV)

-140

-120

-100

-80

-60

-40

-20

-100

100

200

300

400

Vin

(mV) =Vin-VoutTYP

Vout

(mV)

Iin (Off state)

Vin-Vcont vs Icont

1.E-10

1.E-09

1.E-08

1.E-07

1.E-06

10 12 14 16

Vin (V)

Iin (A)

-1.0

-0.8

-0.6

-0.4

-0.2

0.0

0.5

1.0

1.5

2.0

Vcont(Reference : Vin) (V)

Icont (

Vout=2V

Vout=3V

Vout=5V

Vout=4V

Vout=6V

Vout=8V

Iout=0, 50, 100, 150, 200, 300mA

Vout

TYP

Vout

Icont

-0.5

-1.0

-1.5

-2.0

TK113xxCM

GC3-I013B

Page 11

GND Pin Current

100

150

200

250 300

Iout (mA)

Ignd (mA)

113xx

Cnp

0.1

Iout=5mA

Cin

Vcont

1.8V

Vin
=Vout

TYP

+1V

Temperature Characteristics

Iout MAX

GND Pin Current

300

350

400

450

500

550

-50

-25

100

Ta (

IoutMax (mA)

0.0

2.0

4.0

6.0

8.0

10.0

12.0

14.0

16.0

18.0

20.0

-50

-25

100

Ta (

Ignd (mA)

Control Current

ON/OFF Point

-5

-4

-3

-2

-1

-50

-25

100

Ta (

Icont (

0.6

0.8

1.0

1.2

1.4

1.6

1.8

-50

-25

100

Ta (

Vcont(Reference : Vin) (-V)

Vout_ON

Vout_OFF

Iout=300mA

200mA
100mA

50mA

Vin-Vcont = 4V

Vin-Vcont = 3V

Vin-Vcont = 2V

Vin-Vcont = 1.8V

TK113xxCM

GC3-I013B

Page 12

Dropout Voltage

100

150

200

250

300

350

400

-50

-25

100

Ta (

Vdrop (mV)

113xx

Cnp

0.1

Iout=5mA

Cin

Vcont

1.8V

Vin
=Vout

TYP

+1V

Vout (TK11320CM)

Vout (TK11330CM)

-100

-80

-60

-40

-20

100

-50

-25

100

Ta (

Vout (mV)

-100

-80

-60

-40

-20

100

-50

-25

100

Ta (

Vout (mV)

Vout (TK11340CM)

Vout (TK11350CM)

-100

-80

-60

-40

-20

100

-50

-25

100

Ta (

Vout (mV)

-100

-80

-60

-40

-20

100

-50

-25

100

Ta (

Vout (mV)

Iout=300mA

200mA

100mA

50mA

TK113xxCM

GC3-I013B

Page 16

Low Vin

Vout=3V

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

Vin-Vout_Typ (V)

R.R (dB)

113xx

Cnp

0.1

Iout=10mA

Vcont

Vin-1.8V

Vin=Vout

TYP

+2V

f=100Hz

1MHz

500mVp-p

Vripple

The ripple rejection (R.R) characteristic depends on the

characteristic and the capacitance value of the capacitor
connected to the output side. The R.R characteristic of

50kHz or more varies greatly with the capacitor on the
output side and PCB pattern. If necessary, please confirm
stability while operating.

Freq=1kHz, Cnp=0.01

CL=0.22

F (C), Vripple=100mVp-p

Iout=300mA

250mA
200mA

150mA
100mA

50mA

1mA

TK113xxCM

GC3-I013B

Page 21

Output Noise Characteristics

Vout vs Noise

100

2.0

3.0

4.0

5.0

6.0

7.0

8.0

Vout(V)

Noise (

Vrms)

CL=1.0ì F (Tantal)

113xx

Cnp

0.01

Iout=30mA

Cin

Vcont

1.8V

Vin
=Vout

TYP

+1V

BPF=400Hz

80kHz

Cnp vs Noise (CL : Tantalum)

Vout=3.0V

Cnp vs Noise (CL : Ceramic)

Vout=3.0V

100

150

200

250

300

100

1000

10000

100000

Cnp (pF)

Noise

Vrms)

CL=0.22uF
CL=0.47uF
CL=1.0uF
CL=2.2uF
CL=10uF

100

150

200

250

300

100

1000

10000

100000

Cnp (pF)

Noise

Vrms)

CL=0.22uF
CL=0.47uF
CL=1.0uF
CL=2.2uF
CL=10uF

Iout vs Noise (CL : Tantal)

Vout=3.0V

Iout vs Noise (CL : Ceramic)

Vout=3.0V

100

150

200

250

300

Iout (mA)

Noise (

Vrms)

CL=0.22uF
CL=0.47uF
CL=1.0uF
CL=2.2uF
CL=10uF

100

150

200

250

300

Iout (mA)

Noise (

Vrms)

CL=0.22uF
CL=0.47uF
CL=1.0uF
CL=2.2uF
CL=10uF

TK113xxCM

GC3-I013B

Page 24

13. APPLICATIONS INFORMATION

13-1. Stability

Linear regulators require input and output capacitors in

order to maintain the regulator's loop stability. If a 0.1

capacitor is connected to the output side, the IC provides

stable operation at any voltage in the practical current

region. However, increase the CL capacitance when

using the IC in the low current region and low voltage.

Otherwise, the IC oscillates.

The equivalent series resistance (ESR) of the output

capacitor must be in the stable operation area. However,
it is recommended to use as large a value of capacitance

as is practical. The output noise and the ripple noise
decrease as the capacitance value increases. ESR values

vary widely between ceramic and tantalum capacitors.
However, tantalum capacitors are assumed to provide

more ESR damping resistance, which provides greater
circuit stability. This implies that a higher level of circuit

stability can be obtained by using tantalum capacitors
when compared to ceramic capacitors with similar values.

A recommended value of the application is as follows.

Cin=CL

0.22

F at Iout

0.5mA

TK113xxCM

Cin

0.22

Vin

Vout

0.22

Cnp

0.01

GND

However, above recommended value does not satisfy

some conditions.
See "Output Voltage, Output Current vs. Stable

Operation Area" on the next page.
Select the CL capacitance according to the condition of

use.
If the fast load transient response is necessary, increase

the CL capacitance as much as possible.

The input capacitor is necessary when the battery is
discharged, the power supply impedance increases, or the
line distance to the power supply is long.

This capacitor might be necessary on each individual IC
even if two or more regulator ICs are used. It is not

possible to determine this indiscriminately. Please
confirm the stability while mounted

TK113xxCM

GC3-I013B

Page 25

Output Voltage, Output Current vs. Stable Operation Area

Vout=6.0V

0.01

0.1

100

150

Iout [mA]

ESR [ohm]

Stable Area

CL=0.1uF

Unstable Area

Vout=5.0V

0.01

0.1

100

150

Iout [mA]

ESR [ohm]

Stable Area

CL=0.1uF

Unstable Area

Vout=3.0, 4.0V

0.01

0.1

100

150

Iout [mA]

ESR [ohm]

Stable Area

CL=0.1uF

Vout=2.0V

0.01

0.1

100

150

Iout [mA]

ESR [ohm]

Stable Area

CL=0.1uF

Vout=8.0V

0.01

0.1

100

150

Iout [mA]

ESR [ohm]

Stable Area

CL=0.1uF

Unstable Area

The above graphs show stable operation with a ceramic
capacitor of 0.1

F (excluding the low current region). If

the capacitance is not increased in the low voltage, low

current area, stable operation may not be achieved. Please
select the best output capacitor according to the voltage

and current used. The stability of the regulator improves if
a big output side capacitor is used (the stable operation

area extends.) Please use as large a capacitance as is
practical. Although operation above 150mA has not been

described, stability is equal to or better than operation at
150mA.

For evaluation

Kyocera : CM05B104K10AB , CM05B224K10AB ,

CM105B104K16A , CM105B224K16A ,

CM21B225K10A

Murata : GRM36B104K10 , GRM42B104K10 ,

GRM39B104K25 , GRM39B224K10 ,
GRM39B105K6.3

ex. Ceramic Capacitance vs Voltage, Temperature

Generally, a ceramic capacitor has both a temperature

characteristic and a voltage characteristic. Please consider
both characteristics when selecting the part. The B curves

are the recommend characteristics.

Capacitance vs. Voltage

Bias Voltage (V)

CAP

100

B Curve

F Curve

Capacitance vs. Temperature

100

CAP

-50

-25

100

Ta (

B Curve

F Curve

0.5

TK113xxCM

GC3-I013B

Page 26

13-2. Definition of term

Output Voltage (Vout)

The output voltage is specified with Vin=(Vout

TYP

+1V)

and Iout=5mA.

Maximum Output Current (Iout MAX)

The rated output current is specified under the condition

where the output voltage drops 0.9V times the value
specified with Iout=5mA. The input voltage is set to
Vout

TYP

+1V and the current is pulsed to minimize

temperature effect.

Dropout Voltage (Vdrop)

The dropout voltage is the difference between the input
voltage and the output voltage at which point the regulator

starts to fall out of regulation. Below this value, the output
voltage will fall as the input voltage is reduced. It is

dependent upon the load current and the junction
temperature.

Line Regulation (LinReg)

Line regulation is the ability of the regulator to maintain a
constant output voltage as the input voltage changes. The

line regulation is specified as the input voltage is changed
from Vin=Vout

TYP

+1V to Vin=Vout

TYP

+6V. It is a pulse

measurement to minimize temperature effect.

Load Regulation (LoaReg)

Load regulation is the ability of the regulator to maintain a

constant output voltage as the load current changes. It is a
pulsed measurement to minimize temperature effects with

the input voltage set to Vin=Vout

TYP

+1V. The load

regulation is specified under an output current step

condition of 5mA to 100mA.

Ripple Rejection (R.R)

Ripple rejection is the ability of the regulator to attenuate

the ripple content of the input voltage at the output. It is
specified with 500mV

rms

, 1kHz super-imposed on the input

voltage, where Vin=Vout+2V. Ripple rejection is the ratio
of the ripple content of the output vs. input and is

expressed in dB.

Standby Current (Istandby)

Standby current is the current which flows into the

regulator when the output is turned off by the control
function (Vcont=Vin).

Over Current Sensor

The over current sensor protects the device when there is
excessive output current. It also protects the device if the

output is accidentally connected to ground. (When
external transistor is used, the protection operates at 10mA

at the base terminal)

Thermal Sensor

The thermal sensor protects the device in case the junction
temperature exceeds the safe value (T

=150

C). This

temperature rise can be caused by external heat, excessive
power dissipation caused by large input to output voltage

drops, or excessive output current. The regulator will shut
off when the temperature exceeds the safe value. As the

junction temperatures decrease, the regulator will begin to
operate again. Under sustained fault conditions, the

regulator output will oscillate as the device turns off then
resets. Damage may occur to the device under extreme

fault.
Please prevent the loss of the regulator when this
protection operates, by reducing the input voltage or

providing better heat efficiency.

* In the case that the power, Vin

Ishort(Short Circuit Current),

becomes more than twice of the maximum rating of its power
dissipation in a moment, there is a possibility that the IC is
destroyed before internal thermal protection works.

Reverse Voltage Protection

Reverse voltage protection prevents damage due to the
output voltage being higher than the input voltage. This

fault condition can occur when the output capacitor
remains charged and the input is reduced to zero, or when

an external voltage higher than the input voltage is applied
to the output side

ESD

MM : 200pF 0

200V or more

HBM : 100pF 1.5k

2000V or more

TK113xxCM

GC3-I013B

Page 27

13-3. Layout

on/off

Vin

Vout

PCB Material : Glass epoxy (t=0.8mm)

Please do derating with 4.8mW/

C at Pd=600mW and

C or more. Thermal resistance (

ja) is=208

C/W.

100

Pd(mW)

150

600

(85

-4.8mW/

The package loss is limited at the temperature that the
internal temperature sensor works (about 150

C).

Therefore, the package loss is assumed to be an internal

limitation. There is no heat radiation characteristic of the
package unit assumed because of the small size. Heat is

carried away by the device being mounted on the PCB.
This value changes by the material and the copper pattern

etc. of the PCB. The losses are approximately 600mW.
Enduring these losses becomes possible in a lot of
applications operating at 25

The overheating protection circuit operates when there are
a lot of losses with the regulator (When outside

temperature is high or heat radiation is bad). The output
current cannot be pulled enough and the output voltage

will drop when the protection circuit operates. When the
junction temperature reaches 150

C, the IC is shut down.

However, operation begins at once when the IC stops

operation and the temperature of the chip decreases.

How to determine the thermal resistance when
mounted on PCB

The thermal resistance when mounted is expressed as
follows:

Tj=

Pd+Ta

Tj of IC is set around 150

C. Pd is the value when the

thermal sensor is activated.
If the ambient temperature is 25

C, then:

150=

Pd+25

ja=125/Pd (

C /mW)

Pd is easily calculated.
Mount the IC on the print circuit board. Short between the

output pin and ground. after that, raise input voltage from
0V to evaluated voltage (see*1) gradually.

At shorted the output pin, the power dissipation P

can be

expressed as Pd=Vin

Iin.

The input current decreases gradually as the temperature

of the chip becomes high. After a while, it reaches the
thermal equilibrium. Use this currrent value at the thermal
equilibrium.

In almost all the cases, it shows 600mW(SOT23L-6) or
more.

*1 In the case that the power, Vin

Ishort(Short Circuit Current),

becomes more than twice of the maximum rating of its power
dissipation in a moment, there is a possibility that the IC is
destroyed before internal thermal protection works.

100

150

Pd(mW)

D Pd

Ta ()

Procedure (When mounted on PCB.)

1. Find Pd (Vin

Iin when the output side is short-circuited).

2. Plot Pd against 25

3. Connect Pd to the point corresponding to the 150

C with a

straight line.

4. In design, take a vertical line from the maximum operating

temperature (e.g., 75

C) to the derating curve.

5. 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.

6. DPd

(Vinmax

Vout)=Iout (at 75

The maximum output current at the highest operating
temperature will be Iout

DPd

(VinMax

Vout).

Please use the device at low temperature with better

radiation. The lower temperature provides better quality.

TK113xxCM

GC3-I013B

Page 28

13-4. On/Off Control

It is recommended to turn the regulator Off when the

circuit following the regulator is non-operating. A design
with little electric power loss can be implemented. We
recommend the use of the on/off control of the regulator

without using a high side switch to provide an output from
the regulator. A highly accurate output voltage with low

voltage drop is obtained.
Because the control current is small, it is possible to

control it directly by CMOS logic.

REG

Vsat

On/Off Cont.

Control Terminal Voltage (Vcont)

ON/OFF State

Vcont < Vin-1.8V

Vcont > Vin-0.6V

OFF

*C Rank

The pull-up resister is not built-in at control terminal. If a
pull-up resister is necessary according as the control driver,
connect the control terminal with a pull-up resistance (Rp-

up).
If the control function is not used, connect the control

terminal to GND.
It is possible to reduce the control current by inserting a

series resister (Rc). However, be careful the ON/OFF level
may change. Or "will change"

Vin

GND

Vout

Vcont

Vin

Rp-up

Cnp

-0.8

-0.6

-0.4

-0.2

0.0

1.0

1.2

1.4

1.6

1.8

Vcont(Reference : Vin) (-V)

Icont (

Parallel Connected ON/OFF Control

2.0V

3.3V

On/Off Cont.

Vin

TK11350CM

TK11333CM

TK11320CM

Vout

The above figure is multiple regulators being controlled by
a single On/Off control signal. There is fear of overheating,

because the power loss of the low voltage side IC
(TK11320CM) is large. The series resistor (R) is put in the

input line of the low output voltage regulator in order to
prevent over-dissipation. The voltage dropped across the

resistor reduces the large input-to-output voltage across
the regulator, reducing the power dissipation in the device.

When the thermal sensor works, a decrease of the output
voltage, oscillation, etc. may be observed.

Vout

TYP

Vout

Vout (Rc=100k

)

Icont (Rc=100k

)

Vout (Rc=0)

Icont (Rc=0)

TK113xxCM

GC3-I013B

Page 30

13-6. Outline ; PCB ; Stamps

SOT23L-6

5-0.32

1.2

0.15

(0.3)

3.3

2.2

0.4

3.0

0.6

1.0

Reference Mount Pad

0~0.1

1.4max

±0.2

±0.3

±0.1

±0.2

0.4

0.1

0.10

+0.10

0.05

+0.10

0.05

0.95

+0.10

0.05

15°max

0.95

0.10

±0.2

3.4

Voltage

Code

Type

Code

X X R

Unit : mm

Package Structure

Package Material : Epoxy Resin

Terminal Material : Copper Alloy
Mass (Reference) : 0.023g

V OUT

V CODE

V OUT

V CODE

V OUT

V CODE

2.0V

3.2V

6.0V

2.1

3.3

8.0

2.2

3.5

2.5

3.8

2.6

4.0

2.7

4.5

2.8

4.7

2.9

4.8

3.0

5.0

3.1

5.5

The output voltage table indicates the standard value when manufactured.

Please contact your authorized Toko representative for voltage availability.

TK113xxCM

GC3-I013B

Page 31

14. NOTES

Please be sure that you carefully discuss your planned

purchase with our office if you intend to use the products in
this application manual under conditions where particularly
extreme standards of reliability are required, or if you intend
to use products for applications other than those listed in this
application manual.

Power drive products for automobile, ship or aircraft

transport systems; steering and navigation systems,
emergency signal communications systems, and any
system other than those mentioned above which include
electronic sensors, measuring, or display devices, and
which could cause major damage to life, limb or property
if misused or failure to function.
l

Medical devices for measuring blood pressure, pulse,

etc., treatment units such as coronary pacemakers and heat
treatment units, and devices such as artificial organs and
artificial limb systems which augment physiological
functions.
l

Electrical instruments, equipment or systems used in

disaster or crime prevention.

Semiconductors, by nature, may fail or malfunction in

spite of our devotion to improve product quality and
reliability. We urge you to take every possible precaution
against physical injuries, fire or other damages which may
cause failure of our semiconductor products by taking
appropriate measures, including a reasonable safety margin,
malfunction preventive practices and fire-proofing when
designing your products.

This application manual is effective from Oct. 2002. Note

that the contents are subject to change or discontinuation
without notice. When placing orders, please confirm
specifications and delivery condition in writing.

TOKO is not responsible for any problems nor for any

infringement of third party patents or any other intellectual
property rights that may arise from the use or method of use
of the products listed in this application manual. Moreover,
this application manual does not signify that TOKO agrees
implicitly or explicitly to license any patent rights or other
intellectual property rights which it holds.

None of ozone depleting substances(ODS) under the

Montreal Protocol is used in manufacturing process of us.

15. OFFICES

If you need more information on this product and other
TOKO products, please contact us.

TOKO Inc. Headquarters

1-17, Higashi-yukigaya 2-chome, Ohta-ku, Tokyo,
145-8585, Japan
TEL: +81.3.3727.1161
FAX: +81.3.3727.1176 or +81.3.3727.1169
Web site:

http://www.toko.co.jp/

TOKO America

Web site:

http://www.toko.com/

TOKO Europe

Web site:

http://www.tokoeurope.com/

TOKO Hong Kong

Web site:

http://www.toko.com.hk/

TOKO Taiwan

Web site:

http://www.tokohc.com.tw/

TOKO Singapore

Web site:

http://www.toko.com.sg/

TOKO Seoul

Web site:

http://www.toko.co.kr/

TOKO Manila

Web site:

http://www.toko.com.ph/

TOKO Brazil

Web site:

http://www.toko.com.br/

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