Datasheet TK70001MCB Datasheet (TOKO)

TK70001

01S

SINGLE INPUT, TWO OUTPUT SOLID STATE SWITCH

FEATURES

■ Internal PNP Power Transistor

■ Reverse Bias Voltage Protection

■ Very Low Input-Output Voltage Difference

■ Very Low Standby Current

■ Overtemperature Protection

■ Single Input with Two Controlled Outputs

■ Low Noise

DESCRIPTION

The TK70001 is a monolithic bipolar integrated circuit with high side current switches of low saturation type. The current, including the control current, is zero (pA level) when the control pin is “off”. The impedance on the output side is high and the reverse current does not flow when the control pin is “off”. These are effective to decrease the dissipation currents, making the TK70001 a very efficient device for power management and power distribution control.

APPLICATIONS

■ Battery Powered Systems

■ Radio Control Systems

■ Automatic Test Equipment (ATE)

■ Power Management

■ Process Control Equipment

■ Power Distribution Control

■ Communication Equipment

TK70001

OUTPUT 1

INPUT

OUTPUT 2

CONT 1

GND

CONT 2

The TK70001 is available in a miniature SOT-26 surface mount package. When mounted as recommended, this package is capable of dissipating up to 350 mW.

ORDERING INFORMATION

TK70001MCB

Tape/Reel Code

TAPE/REEL CODE

B: Tape Left

OUTPUT 2

CONT 2

BLOCK DIAGRAM

INPUT

THERMAL

PROTECTION

SW

CIRCUIT

GND

OUTPUT 1

CONT 1

January 1999 TOKO, Inc. Page 1

TK70001

ABSOLUTE MAXIMUM RATINGS

Supply Voltage ......................................................... 14 V

Output Current .................................................... 130 mA

Power Dissipation (Note 1) ................................ 350 mW

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

TK70001 ELECTRICAL CHARACTERISTICS

Test conditions: T

LOBMYSRETEMARAPSNOITIDNOCTSETNIMPYTXAMSTINU

= 25 °C, V

A

= 2.5 V, unless otherwise specified.

IN

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

Operating Voltage Range............................... 1.6 to 12 V

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

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

I

Q

I

V ∆V

I

YBTS

TUO

DNG

PORD

D

VER

tnerruCtnecseiuQI

tnerruCybdnatS

tnerruCtuptuO

)3etoN(tnerruCdnuorGI

egatloVtuoporDI

slennahCneewteBecnalaB

tnerruCsaiBesreveR

TUO

V

NI

V

TNOC

V

PORD

V

PORD

TUO

V

PORD

I

TUO

V

NI

V

TNOC

I,Am0=

TNOC

Aµ05=6.02.1Am

,FFOtuptuO,V8=

V0=

I,V5.0=

TNOC

I,V5.0=

TNOC

I,Am05=

TNOC

I,Am05=

TNOC

Aµ05=06001Am

Aµ001=08031Am Aµ05=5.35.5Am Aµ05=71.053.0V

,ecnereffid

I,Am05=

TNOC

V,V0=

VER

Aµ05=

,V8=

FFOtuptuO,V0=

1.0001An

05Vm

20.005An

LANIMRETLORTNOCFFO/NO

I

TNOC

V V

Note 1: Power dissipation is 350 mW when mounted as recommended. Derate at 2.8 mW/°C for operation above 25°C. Power dissipation is Note 2: By grounding this terminal, the operation completely stops and the input current decreases to a pA level.

Note 3: Ground current is defined as IIN - I Gen. Note: Parameters with min. or max. values are 100% tested. Gen. Note: Exceeding “Absolute Maximum Ratings” can damage the device.

)NO(TNOC

)FFO(TNOC

150 mW in Free Air. Derate at 1.2 mW/°C for operation above 25 °C.

tnerruClanimreTlortnoCV

TNOC

I,V6.1=

TUO

Am05=0559041Aµ

)NO(egatloVlortnoCNOtuptuO0.1V

)FFO(egatloVlortnoC)2etoN(FFOtuptuO2.0V

, excluding control terminal current. Refer to “Definition of Terms.”

OUT

Page 2 January 1999 TOKO, Inc.

TEST CIRCUIT

INPUT

V

OUT 2

V

CONT 2

V

I

CONT 2

IN

I

OUT 2

C

L 2

R

OUTPUT 2

= 0.1 µF

CONT 2

I

IN

OUTPUT 1

C

CONT 1CONT 2

R

C

IN

1 µF

= 0.1 µF

L 1

CONT 1

I

CONT 1

I

OUT 1

V

CONT 1

V

OUT 1

TYPICAL PERFORMANCE CHARACTERISTICS

TK70001

DROPOUT VOLTAGE

CONTROL CURRENT

400

300

(mV)

200

DROP

V

75 mA

50 mA

100

I

= 25 mA

OUT

0

0 50 100

I

(

CONT

A)

DROPOUT VOLTAGE

OUTPUT CURRENT

0

100

(mV)

200

DROP

300

V

400

V

= 1 V

IN

V

IN

V

= 2.5 V

0 50 100 150

I

(mA)

OUT

VS.

125 mA

100 mA

VS.

= 5.0 V

IN

CONTROL CURRENT VS.

CONTROL VOLTAGE

100

20K

80

60

( A)

40

CONT

I

R

CONT

10K

= 0

20

0

0 1 2 3 4 5

V

(V)

CONT

QUIESCENT CURRENT VS.

INPUT VOLTAGE

500

( A)

250

Q

I

0

0 5 10 15

I

CONT

I

CONT

V

IN

I

CONT

I

CONT

= 20 A = 10 A

(V)

30K

50K

75K

100K

= 50 A

= 40 A

= 30 A

MAX OUTPUT CURRENT VS.

CONTROL CURRENT

140

100

(mA)

60

OUT

I

20

V VIN = 3.0 V VIN = 4.5 V VIN = 6.0 V

10 20 30 40 50

I

(

CONT

A)

REVERSE CURRENT

REVERSE VOLTAGE

2

(nA)

1

REV

I

0

0 5 10 15

V

(V)

REV

IN

= 1.5 V

VS.

January 1999 TOKO, Inc. Page 3

TK70001

I

TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)

GROUND CURRENT VS.

OUTPUT CURRENT

10

5

GND (mA)

I

0

0 50 100

I

(mA)

OUT

ON/OFF RESPONSE

C

IN = 0.1 µF

C

IN = 0

DROPOUT VOLTAGE

OUTPUT CURRENT

0

AT 2 CIRCUIT PARALLEL

-100

(mV)

-200

DROP

-300

V

-400

0 100 200

I

OUT (mA)

V

IN

I

OUT

VS.

= 30 mA

QUIESCENT CURRENT

INPUT VOLTAGE

5.0

I

CONT

= 50 µA

I

CONT

= 100 µA

V

IN (V)

2.5

Q (mA)

I

CONT

0

0 5 10 15

VS.

= 150 µA

C

IN

V

CONT

CIN must be over 0.1 µF

0 1 2 3 4

TIME (µs)

ON/OFF RESPONSE

C

L = 0

C

L = 0.01 µF

V

IN

C

L = 0.001 µF

V

CONT

0 1 2 3 4

TIME (µs)

1 µF

I

= 30 mA

OUT

C

L

Page 4 January 1999 TOKO, Inc.

30 mA

TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)

LOAD RESPONSE

V

OUT

I

0

OUT

0 10 20 30 40

TIME (µs)

C

IN = 1 µF

50 mV/ DIV

C

L = 0.1 µF

TK70001

I

= 0 to 30 mA

V

IN

1 µF

OUT

C

L

January 1999 TOKO, Inc. Page 5

TK70001

DEFINITION AND EXPLANATION OF TECHNICAL TERMS

DROPOUT VOLTAGE (V

DROP

)

The output voltage decreases with the increase of output current. It is dependent upon the load current and the junction temperature. The dropout voltage is the difference between the input voltage and the output voltage. The measurement current is I

= 50 mA. (I

OUT

CONT

= 50 µA,

VIN = 2.5 V).

OUTPUT CURRENT (I

OUT

)

The rated output current is specified under the condition where the output voltage drops 0.5 V below the no load value. The input voltage is set to 2.5 V, and the current is pulsed to minimize temperature effects.

QUIESCENT CURRENT (IQ)

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

OUT

= 0 mA)

with VIN = 2.5 V and excludes the control pin current.

STANDBY CURRENT (I

STBY

)

Standby current is the current which flows into the solid state switch when the output is turned off by the control function (V

= 0 V). It is measured with VIN = 8 V.

CONT

ON/OFF CONTROL CURRENT

The characteristics of TK70001 change by the value of control current. Please refer to the electrical characteristics graphs on the data sheet and determine the optimum value. The standard measurement condition is I

= 50 µA. (The application is max. I

CONT

= 200 µA). In

CONT

the condition where there is very little output current, connect the resistor R

to the control terminal (please

CONT

consider the reduction of the terminal voltage, the resistance value, etc.). This current can be lowered.

THERMAL SENSOR

The thermal sensor protects the device in the event that the junction temperature exceeds the safe value (Tj = 150 °C). This temperature rise can be caused by external heat, excessive power dissipation caused by large input to output voltage drop, or excessive output current. The switch will shut off when the temperature exceeds the safe value. As the junction temperature decreases, the switch will begin to operate again. Under sustained fault conditions, the switch output will cycle as the device turns off, and then resets. Damage may occur to the device under extreme fault conditions.

PACKAGE POWER DISSIPATION (PD)

GROUND CURRENT (I

GND

)

This is the power dissipation level at which the thermal

sensor is activated. The IC contains an internal thermal Ground current is the current which flows through the ground pin(s). It is defined as IIN - I

, excluding control

OUT

current.

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)

ON/OFF CONTROL

and the output power (V

OUT

x I

) increases. The rate of

OUT

temperature rise is greatly affected by the mounting pad High is “on” (referenced to ground). The input current is at the pA level by connecting the control terminal to ground.

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

REVERSE VOLTAGE PROTECTION

even if the power dissipation is great. When mounted on

the recommended mounting pad, the power dissipation of 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.

the SOT-26 is increased to 350 mW. For operation at

ambient temperatures over 25 °C, the power dissipation of

the SOT-26 device should be derated at 2.8 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

Page 6 January 1999 TOKO, Inc.

TK70001

+

GND

INPUT

+

PCB: CLASS EPOXY T=0.8 mM

OUTPUT 2

OUTPUT 1

CONT 1

CONT 2

DEFINITION AND EXPLANATION OF TECHNICAL TERMS (CONT.)

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:

Tj = 0jA x PD + T

A

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

150 °C = 0jA x PD + 25 °C 0jA = 125 °C/ P

D

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.

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

(mW)

P

D

PD

3

6

4

5

The maximum operating current is:

I

= (D

OUT

450

350

250

(mW)

D

150

P

50

0

0 50 100 150

PD

/ (V

IN(MAX) - VOUT

MOUNTED AS

SHOWN

FREE AIR

TA (

C)

)

SOT-26 POWER DISSIPATION

APPLICATION INFORMATION

BOARD LAYOUT

The copper pattern should be as large as possible.

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.

SOT-26 BOARD LAYOUT

January 1999 TOKO, Inc. Page 7

TK70001

)

PACKAGE OUTLINE

SOT-26 (SOT-23-6)

6

1

5

2

e

(1.9)

4

3

0.950.95

e

2.9

Marking

0.3

Marking Information

0.7

1.0

(0.6)

2.4

1

e

1.6

e

(0.6)

+

0.1

Recommended Mount Pad

M

0.1

1.1

1.4 max

0.95

e

0.95

e

1.90

0.1

+

0.15

Marking TK70001 01S

0.1

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

0 ~ 0.1

+

0.3

2.8

0-13

Toko America, Inc. Headquarters 1250 Feehanville Drive, Mount Prospect, Illinois 60056 Tel: (847) 297-0070 Fax: (847) 699-7864

TOKO AMERICA REGIONAL OFFICES

Midwest Regional Office Toko America, Inc. 1250 Feehanville Drive Mount Prospect, IL 60056 Tel: (847) 297-0070 Fax: (847) 699-7864

Western Regional Office Toko America, Inc. 2480 North First Street , Suite 260 San Jose, CA 95131 Tel: (408) 432-8281 Fax: (408) 943-9790

Eastern Regional Office

Toko America, Inc.

107 Mill Plain Road

Danbury, CT 06811

Tel: (203) 748-6871

Fax: (203) 797-1223

Semiconductor Technical Support Toko Design Center 4755 Forge Road Colorado Springs, CO 80907 Tel: (719) 528-2200 Fax: (719) 528-2375

Visit our Internet site at http://www.tokoam.com

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.

Page 8 January 1999 TOKO, Inc.

IC-216-TK70001

0798O0.0K