LX1692

Microsemi

Integrated Products Division

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

Page 8

Copyright

© 2004

Rev. 1.2, 12/20/2006

Full Bridge Resonant CCFL Controller

TM

®

SIMPL I FIED BLOC K DIAGR A M

VDDA

Ramp OSC

RMP_RST

C_R

+

-

1V

C_BST

Burst

OSC

VDDA

VDDA

C_TO

VDDA

+

-

3.5V

BRITE_A

+

-

VCOMP

+

-

2V

VIN_SNS

+

-

ENABLE

Sleep

Logic

I_R

VDDP

OC_SNS

Fault

Detection &

Timer Logic

PWM

Block

VDDP

VDDP

GND

AOUT

BOUT

COUT

DOUT

+

-

ISNS

FWR

1.0V/0.3V

+

-

ICOMP

2.0V

+

-

OV_SNS

3.2V

Resonant

Timing

Detection &

Control

Logic

BRITE_D

Output

Driver

LDET

0.45V

2V

4V

LDO

VDDA

+

-

0.5V

C_BST

C_BST

VDDP

SLEEP

SLEEP

DIM

DIM

RMP_RST

1

0

SEL

OUT

Figure 1 –

Block Diagram