Datasheet TK70203MBX, TK70203MTL Datasheet (TOKO)

1

3

6

4

2

V

O

V

IN

GND

SHUT DOWN



TK702xx

1.03 V REGULATOR WITH ON/OFF SWITCH

FEATURES

■ Low Input Voltage Operation (Single Battery Cell)

■ Internal PNP Transistor

■ Built-In Shutdown Control (Off Current, 8 µA Typ)

■ Low Dropout Voltage (30 mV Typ)

■ Very Small Surface Mount Package (SOT-25)

DESCRIPTION

The TK702xx is a very low dropout, low input voltage operation regulator suitable for single battery cell applications. This regulator provides 1.03 V output with a dropout voltage of only 30 mV. The active high control provides on/ off switching of the output. In the off mode, the standby supply current is 8 µA, thus extending battery life.

The TK702xx is available in a very small plastic surface mount package (SOT-25).

APPLICATIONS

■ Pagers

■ Personal Communication Equipment

■ Portable Consumer Equipment

■ Radio Control Systems

■ Single Battery Cell Systems

TK702xx

BLOCK DIAGRAM

ORDERING INFORMATION

V

6 4

IN

V

O

TK702 M

Tape/Reel Code

SHUT

1

Voltage Code

VOLTAGE CODE

03 = 1.03 V

January, 1996 TOKO, Inc. Page 1

TAPE/REEL CODE

BX : Bulk/Bag TL : Tape Left

DOWN

1-16-96

SHUT DOWN

BANDGAP

REFERENCE

+

-

GND

2,3

TK70203 BD

TK702xx

ABSOLUTE MAXIMUM RATINGS

Input Voltage..............................................................6 V

Power Dissipation ..............................................150 mW

Operating Voltage Range..............................0.9 to 5.0 V

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

Operating Temperature Range ..................-10 to +60 °C

Lead Soldering Temp. (10 sec.)......................... 240 °C

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

ELECTRICAL CHARACTERISTICS

Test Conditions: VCC = 1.4 V, T

SYMBOL PARAMETER TEST CONDITIONS MIN TYP MAX UNITS

I

IN

I

STBY

V

O

V

DROP

I

O

Supply Current

Standby Current V

Output Voltage IO = 2 mA 0.98 1.03 1.065 V In/Out Voltage Drop IO = 2 mA 30 60 mV

Output Current Note 2 8 16 mA Line Reg Line Regulation V Load Reg Load Regulation I RR Ripple Rejection 100 mVrms, f = 400 Hz, IO = 2 mA 36 dB

= 25 °C, unless otherwise specified.

A

IO = 0 mA 180 280 µA V

= V

IN

= Off, 8 13 µA

OUT

- 50 mV, IO = 0 mA 400 800 µA

OUT

R = 820 kΩ, Note 1

= 1.4 → 1.7 V 10 30 mV

IN

= 0.1 → 5.0 mA, Note 3 5 20 mV

O

∆VO/∆TAOutput Voltage I

= 2 mA, TA = -10 to +50 °C 0.3 mV/°C

O

Temperature Dependency Control Terminal Specification R = 820 kΩ (series connection) I

CONT

V

CONT

Note 1: Standby current (including control current) is the input current with a 820kΩ connected in series with the control terminal. Note 2: I Note 3: Since the measurement (pulse measurement) is in a constant T

Control Current V

Control Voltage

(Load Current) is a output current value when VO drops down 0.2 V from VO at IO = 2 mA.

O

included.

= Off, V

OUT

V

= On, TA = -10 to +60 °CVCC - 0.2 V

OUT

V

= Off, TA = -10 to +60 °C0 V

OUT

= VCC - 1.4 V 2 µA

CONT

, the output change due to temperature change is not

J

CC

- 0.8 V

CC

V

Page 2 January, 1996 TOKO, Inc.

1-16-96

TK702xx

OUTPUT VOLTAGE vs.

V

(V)

O

V

I

0

F

OUT

IN

OUTPUT VOLTAGE vs.

V

(V)

INPUT CURRENT vs.

I

(mA)

OUTPUT VOLTAGE vs.

V

(V)

OUTPUT VOLTAGE DRIFT vs.

0

V

(mV)

INPUT CURRENT (NO LOAD) vs.

I

(µA)

TEST CIRCUIT

IN

A

1.05

O

1.0

V

IN

5 4

V

O

TK70203

820 kW

0.1 µF

+

SHUT

DOWN

1 2

GND

3

V

IN

SD

+

C

L

4.7 µF

V

I

O

V

C

.1 µF

Rc

= 3. 3 µ

L

TYPICAL PERFORMANCE CHARACTERISTICS

OUTPUT CURRENT

TA = 25 °C

OUTPUT CURRENT

1.0

TA = 25 °C

0.5

1.2

1.0

O

IN

SUPPLY VOLTAGE

TA = 25 °C

0.95 010

IO (mA)

INPUT VOLTAGE

500

IN

T

= 25 °C

A

20

1

0

01020

I

(mA)

O

2

SUPPLY VOLTAGE

1.05

TA = 25 °C

IO = 5.0 mA

O

1.0

IO = 0 mA

0.7

1.0

0.8 1.5 1.8 VIN (V)

+25

0

O

TEMPERATURE

IO = 2.5 mA

0

12 5

034

V

(V)

IN

4

January, 1996 TOKO, Inc. Page 3

0.95

0.9 1.0 1.3

0.8 1.1 1.2 VIN (V)

1-16-96

5

-30

-50 10

050

TEMPERATURE(°C)

3

6

TK702xx

RIPPLE REJECTION

RIPPLE REJECTION (dB)

LINE TRANSIENT RESPONSE

1

LOAD TRANSIENT RESPONSE

1

SHORT CIRCUIT CURRENT

V

(V)

0

DROPOUT VOLTAGE vs.

V

(mV)

OUTPUT (ON/OFF)

V

NOISE SPECTRUM

NOISE (dB)

z

INPUT CURRENT vs.

I

(µA)

0

ON/OFF CONTROL TERMINAL

I

(µA)

.0

TYPICAL PERFORMANCE CHARACTERISTICS

0

-50

-100

SD

O

.1 1

TA = 25 °C

10

FREQUENCY (kHz)

CONTROL RESPONSE

TA = 25 °C

CL = 1 µF

CL = 3.3 µF

6.0

1.5

V

IN

I

O

TA = 25 °C

1.3

0

.05 V

100

O

1.01 TA = 25 °C

50 µ s/DIV

7

8

.05

V

O

1.01

50 µ s/DIV

9

OUTPUT CURRENT

200

TA = 25 °C

1.0 TA = 25 °C

0.8

0.6

O

100

DROP

0.4

VIN = 1.2 V

1.4 V

2.0

1.0

CONT

Page 4 January, 1996 TOKO, Inc.

(SERIES RESISTOR RC)

TA = 25 °C

V

OUT

RC = 500 k

RC = 820 k

0

V

10 µs/DIV

RC = 500 k

RC = 820 k

RC = 1 M

1.0 2 (V)

CONT

0.2

-50

0

10 2

IO (mA)

12

TA = 25 °C

0

10

12 5

034

I

(mA)

O

11

INPUT VOLTAGE

RC = 820 k

20

TA = 25 °C

IO = 3 mA

-100

10

N(OFF)

0

13

1.0 2.

VIN(V)

1-16-96

14

(SPECTRUM ANALYZER ONLY)

0

500 kHz 1 MH

FREQUENCY

15

APPLICATION NOTES

D

G

V

RECOMMENDED MOUNTING

Optimum performance can only be achieved when the IC is mounted on a PC board according to the diagram below. This is because of the extremely small package and limited power dissipation. Shape the metal portion of the PCB as shown in the following drawing.

TK702xx

V

GN

TK70203•FIG1A

O

ND

IN

ON/OFF o r C

P

Use a large bypass capacitor and connect it in a place near GND of the IC. Pay attention to temperature characteristics of the capacitor, especially the increase of ESR and decrease of capacitance in low temperatures. Oscillation, reduction of ripple rejection and increased noise may occur in some cases if the proper capacitor is not used. An output capacitor more than 1.0 µF is required to maintain stability. The standard test condition is 3.3 µF (TA = 25 °C).

DROPOUT VOLTAGE

Dropout voltage is the voltage difference between the input voltage and the output voltage where the output voltage decreases to 100 mV below the nominal output voltage as the input voltage is decreased.

To measure dropout voltage, set the input voltage to the nominal output voltage +1 V and measure the output voltage. Reduce the input voltage to the point where the output is 100 mV below the prevoiusly measured value. The dropout voltage is the difference between the input and ouput voltage at this point. This voltage depends on the load current and ambient temperature.

January, 1996 TOKO, Inc. Page 5

1-16-96

TK702xx

()

PACKAGE OUTLINE

SOT-25

Marking  Information

5 4

2 31

e

0.950.95

(1.9)

±

0.2

2.9

0.4

(0.6)(0.6)

-0.3

+0.2

1.6

±

0.1

1.3max

M

0.1 ±

1.1

0 ~0.1

1.0

Recommended Mount Pad

0.8

Marking Information

TK70203 L03

0.7

e

0.95

2.6

1

e

0.95

e'

1.90

-0.05

+0.1

0.16

+0.2

-0.3

2.8

Unit:mm

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.



YOUR LOCAL REPRESENTATIVE IS:

TOKO America, Inc. 1250 Feehanville Dr. Mt. Prospect, IL 60056

Tel: 1(800) PIK-TOKO Fax: 1(847) 699-1194

Page 6 January, 1996 TOKO, Inc.

Please order by literature number:

1-16-96

IC-136-TK70203

Printed in U.S.A.