Confidential

Datasheet Version 1.0

November

2012

Page 2

Pin Configuration

1

2

3

4

5

6

7

24

23

22

21

20

19

18

8

17

9

16

10

15

11

14

12

13

Pin Description

PIN NO

Description

1

VCC

Power Supply Input

2

EN

Enable

3

VDD

Internal Regulator Output for Gate Drive

4

LUVP

Input Line Voltage Sense

5

ISEN1

Ch#1 LED Current Sense connected to Error Amp. Inverting Input

6

PDIMO1

Ch#1 Dimming PWM Gate Driver Output

7

COMP1

Ch#1 Error Amp. Compensation

8

OVP1

Ch#1 Over voltage protection

9

GATE1

Ch#1 Gate drive Output for Boost Convert

10

CS1

Ch#1 Current sense of the Boost Convert

11

PDIMI1

Ch#1 Dimming PWM Gate Driver Input

12

PGND

Power GND

13

PDIMI2

Ch#2 Dimming PWM Gate Driver Input

14

CS2

Ch#2 Current sense of the Boost Convert

15

GATE2

Ch#2 Gate drive Output for Boost Convert

16

OVP2

Ch#2 Over voltage protection

17

COMP2

Ch#2 Error Amp. Compensation

18

PDIMO2

Ch#2 Dimming PWM Gate Driver Output

19

ISEN2

Ch#2 LED Current Sense connected to Error Amp. Inverting Input

20

PGOOD

Power Good Indication

(Open-Drain status output, Normal : Open, Protection : Internal GND)

21

RT/CT

Oscillator frequency setting

22

VREF

Reference voltage

23

ADIM

Analog Dimming for Ch#1 and Ch#2

24

SGND

Signal GND