Datasheet TK70003MCB Datasheet (TOKO)

TK70003

20P

SINGLE OUTPUT, TWO INPUT 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 Output with Two Controlled Inputs

■ Active High On/Off Control

DESCRIPTION

The TK70003 is a monolithic bipolar integrated circuit with high side current switches of low saturation type. The supply current, including the control current, is virtually 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 TK70003 a very efficient device for power management and power distribution control.

The TK70003 is available in a miniature SOT-23-6 surface mount package. When mounted as recommended, this package is capable of dissipating up to 350 mW.

APPLICATIONS

■ Battery Powered Systems

■ Radio Control Systems

■ Automatic Test Equipment (ATE)

■ Power Management

■ Process Control Equipment

■ Power Distribution Control

TK70003

INPUT 1

OUTPUT

INPUT 2

CONT 1

GND

CONT 2

BLOCK DIAGRAM

ORDERING INFORMATION

OUTPUT

TK70003MCB

Tape/Reel Code

TAPE/REEL CODE

B: Tape Left

INPUT 2

CONT 2

SW

CIRCUIT

BASE CONTROL CURRENT

THERMAL

PROTECTION

GND

BASE CONTROL CURRENT

SW

CIRCUIT

January 1999 TOKO, Inc. Page 1

INPUT 1

CONT 1

TK70003

ABSOLUTE MAXIMUM RATINGS

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

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

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

Control Terminal Voltage ........................................... 8 V

Reverse Bias Voltage................................................. 8 V

TK70003 ELECTRICAL CHARACTERISTICS

Test conditions: VIN = 2.5 V, T

LOBMYSRETEMARAPSNOITIDNOCTSETNIMPYTXAMSTINU

= 25 °C, unless otherwise specified.

A

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

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

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

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

I

Q

I

I I

V ∆V

I

YBTS

TUO

DNG

PORD

D

VER

tnerruCtnecseiuQI

tnerruCybdnatS

tnerruCtuptuOV

)3etoN(tnerruCdnuorGI

egatloVtuoporDI

tnerruCsaiBesreveRV

TUO

V

NI

V

TUO

slennahCneewteBecnalaBV

NI

V0=

TNOC

PORD

V5.0=07011Am Am05=5.25.4Am Am05=81.053.0V

PORD

V,V0=

VER

IedulcxE,Am0=

TNOC

,FFOtuptuO,V8=

I,ecnereffid

TUO

V,V8=

TNOC

52.056.0Am

5.0001An

Am05=152Vm

V0=3.005An

LANIMRETLORTNOCFFO/NO

I

TNOC

V V

)NO(TNOC

)FFO(TNOC

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 150 mW in Free Air. Derate at 1.2 mW/°C for operation above 25 °C. 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 Note 4: If both input voltages are the same (parallel operation), both switches can be turned on at the same time. If the input voltages

are different, only one switch should be turned on at any given time. Gen. Note: Parameters with min. or max. values are 100% tested. Gen. Note: Exceeding “Absolute Maximum Ratings” can damage the device.

tnerruClanimreTlortnoCV

TNOC

V6.1=751Aµ

)NO(egatloVlortnoC)4etoN(NOtuptuO2.1V

)FFO(egatloVlortnoC)2etoN(FFOtuptuO3.0V

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

OUT

Page 2 January 1999 TOKO, Inc.

TEST CIRCUIT

INPUT 1

I

CONT

2

CONT 1CONT 2

I

IN

2

I

CONT

1

V

CONT

2

V

CONT

1

INPUT 2

CL = 0.1 µF

V

OUT

I

OUT

OUTPUT

V

IN

2

C

IN 2

0.1 µF

I

IN

1

V

IN

1

R

CONT 2

R

CONT 1

C

IN1

0.1 µF

V

(

V)

I

(

A)

I

(

A)

TYPICAL PERFORMANCE CHARACTERISTICS

TK70003

CONTROL CURRENT 1

CONTROL VOLTAGE

VS.

CONTROL CURRENT 2 VS.

CONTROL VOLTAGE

DROPOUT VOLTAGE

OUTPUT CURRENT

VS.

100

0

80

40

V

OUT

-100

60

( A)

R

= 0

40

CONT

I

CONT

20

0

0 2 4 6 8 10

V

(V)

CONT

DROPOUT VOLTAGE

OUTPUT CURRENT

0

VIN = 2.5 V

-100

m

-200

DROP

-300 SINGLE

OPERATION

-400

0 100 200

I

OUT

(mA)

VS.

PARALLEL

30

( A)

20

CONT

I

10

0

0 1 2 3 4 5

V

CONT

GROUND CURRENT

OUTPUT CURRENT

10

(V)

R

CONT

100 k

200 k

VS.

= 0

(mV)

-200

DROP

VIN = 1.0 V

-300

V

1.2 V

-400

0 50 100

I

(mA)

OUT

REVERSE CURRENT

REVERSE VOLTAGE

2

1.8V

1.6 V

1.4 V

VS.

1.8 V

m

GND

5

1.6 V

n

REV

1

1.4 V

VIN = 1.0 V

I

OUT

1.2 V

(mA)

0

0 5 10 15

V

(V)

REV

0

0 50 100

January 1999 TOKO, Inc. Page 3

TK70003

I

(

A)

V

(V)

ON/OFF RESPONSE 1

TIME (µs)

0 1 0 10 20

V

CONT

C

L = 0.01 µF

I

LOAD = 30 mA

C

L = 0.1 µF

TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)

GROUND CURRENT

3

m

2

GND

0

-50 0 50 100

CONTROL VOLTAGE (V

1.0

0.5

CONT

I

TA (°C)

OUT

= 50 mA

OUT

= ON)

DROPOUT VOLTAGE

240

200

(mV)

I

DROP

V

100

-50 0 50 100

CONTROL CURRENT

10

8

(µA)

6

CONT

4

I

OUT = 50 mA

TA (°C)

V

CONT = 1.6 V

OUTPUT CURRENT

140

130

120

(mA)

OUT

I

110

100

90

-50 0 50 100

AT V

V

IN = 2.5 V

DROP

TA (°C)

= 0.5 V

2

0

-50 0 50 100 TA (°C)

ON/OFF RESPONSE 2

C

L = NONE

C

L = 0.01 µF

C

Page 4 January 1999 TOKO, Inc.

V

CONT

0 1 2 3 4

TIME (µs)

L = 0.1 µF

I

LOAD = 30 mA

0

-50 0 50 100 TA (°C)

LOAD STEP RESPONSE

C

L = 0.1 µF

I

LOAD = 0 to 30 mA

0 4 8 12 16

TIME (µs)

100 mV/DIV

C

L = 0.01 µF

DEFINITION AND EXPLANATION OF TECHNICAL TERMS

TK70003

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. It measure the differential voltage between the input voltage and the output voltage when the input voltage is set to 2.5 V and the output current is set to 5 mA.

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

GROUND CURRENT (I

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

CONT

)

GND

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

, excluding control

OUT

current.

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 (Note: both

OUT

VIN pins are connected together and both switches “on” for this measurement). The rate of 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-23-6 is increased to 350 mW. For operation at ambient temperatures over 25 °C, the power dissipation of the SOT-23-6 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 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:

ON/OFF CONTROL

Tj = 0jA x PD + T

A

High is “on” (referenced to ground). The input current is at the pA level by connecting the control terminal to ground.

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

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

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

D

charged and the input is reduced to zero, or when an external voltage higher than the input voltage is applied to the output side.

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 5

TK70003

DEFINITIONS AND TERMS (CONT.) APPLICATION INFORMATION

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

(mW)

P

D

PD

3

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.

BOARD LAYOUT

OUTPUT

SOT-23-6 BOARD LAYOUT

INPUT 2

INPUT 1

GND

CONT 1

CONT 2

The maximum operating current is:

I

OUT

450

350

250

(mW)

D

150

P

= (D

50

0

/ (V

PD

IN(MAX) - VOUT

MOUNTED AS

0 50 100 150

TA (°C)

)

SHOWN

FREE AIR

SOT-23-6 POWER DISSIPATION

Page 6 January 1999 TOKO, Inc.

)

PACKAGE OUTLINE

TK70003

SOT-26 (SOT-23-6)

6

1

5

2

3

(1.9)

0.950.95

e

2.9

e

Marking Information

0.7

4

Marking

0.3

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 TK70003 03S

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.

January 1999 TOKO, Inc. Page 7

IC-218-TK70003

0798O0.0K