2006. 4. 20

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SEMICONDUCTOR

TECHNICAL DATA

KIB3402F

BICD LINEAR INTEGRATED CIRCUIT

Revision No : 0

White LED Step-Up Converter

The KIB3402F is a monolithic step-up DC/DC converter specifically

designed to drive white LEDs with a constant current from Li-ion cell.

Relative large 320mV feedback voltage & it’s high accuracy help you

setting LED current with a external resistor.

KIB3402F is available in a extremely low profile & small TS-6 package.

A 4.7 H inductor is sufficient for most application.

FEATURES

Inherently Matched LED Current.

High Efficiency : 85% (max.)

Built in a open circuits protection for the LEDs fail.

Drives Up to four LEDs without external zener diode.

Drives Up to six LEDs with external zener diode.

Built in a N-channel MOSFET Switch.

Fast 1.1MHz(typ.) Switching Frequency.

Uses Tiny 1mm Tall Inductors.

Bulit in Thermal protection.

Wide Dimming control range : 25%~100%.

Extremely low height & small Packaging.

APPLICATIONS

Celluars Phones

PDAs

Digital Cameras

MP3 Players, Color Displays

DIM

MILLIMETERS

A

B

D

E

TS6

0.95

0.16 0.05

MIN 0.21

C

F

G

H

I

J

K

L

0.4

K

K

B

E

H

J

J

2

3

5

16

4

2.9 0.05

+

_

0.7 0.05

+

_

0.4 0.05

+

_

2.8 0.07

+

_

1.6 0.05

+

_

1.9 0.05

+

_

0.05 0.05

+

_

+

_

0.6 0.07

+

_

Figure1. 4Series White LED Driver in Thin TS6

0

C1, C2 : X5R OR X7R DIELECTRIC

D1 : KEC KDR730E/KDR720E (Low V )

L1 : MURATA LQH32CN100K53L OR EQUIVALENT

GND

SW

L1

C1

ON

Shutdown and

Dimming control

OFF

C2

21.5Ω

R1

KIB3402F

D1

CTL

FB

F

OVD

LED1

LED2

LED3

LED4

LOAD CURRENT (mA)

10

CONVERSION EFFICIENCY

75.00

77.00

79.00

81.00

83.00

85.00

87.00

05

20

15

25

3.0V

Vin

3.6V

4.3V

1

2

4

3

6

5

4.7 H~10 H

µ

µ

1 F

µ

1 F

µ

TYPICAL APPLICATION

Marking

Lot No.

Type Name

402

12

3

65

4