2006. 4. 20

3/6

KIB3402F

Revision No : 0

ELECTRICAL CHARACTERISTIC

(Topr=-40~85

CHARATERISTICS

SYMBOL

CONDITION

MIN.

TYP.

MAX.

UNIT

Input Voltage

-

2.8

-

5.5

V

Supply Current

-

0.9

1.5

-

0.5

1

Feedback Voltage

294

320

346

CTL Pin Bias Current

-

20

-

Switching Frequency

0.77

1.1

1.43

Switching Pin Current

-

400

-

Switch RDS(ON)

400

-

0.7

1.5

Switch Leak Current

-

-

0.5

1

OVD Pin Voltage

-

16

20

22

V

OVD Pin Leak Current

-

-

0.5

1

Thermal Shutdown

TSD

-

-

150

180

Switching Pin OVP

-

25

-

-

V

CTL pin voltage for Full LED Current

2.7

-

-

V

CTL pin voltage to shutdown Chip

-

-

0.5

V

Feedback Bias Current

-

-

0.5

1

Maximum Duty Cycle

-

85

90

-

%

NO.

SYMBOL

FUNCTION AND CONNECTION.

1

CTL

Control pin : Shutdown or dimming control. Connect external enable or dimming circuits.

Filtered PWM signal, above 33us of pulse width, can be used for dimming control.

2

OVD

Over output voltage detect pin. Connect cathode of schottky diode and anode of highest LED.

3

SW

Switch pin. Connect inductor/diode here. Minimize trace area at this pin to reduce EMI.

4

FB

Feedback pin. Reference voltage is 320mV. Connect cathode of lowest LED and resistor here.

5

GND

Ground pin. Connect directly to local ground plane,

6

Input supply pin. Must be locally bypassed.

PIN FUNCTIONS