lx1689 Microsemi Corporation, lx1689 Datasheet - Page 8

• Manufacturer Part Number: lx1689
• Description: Third Generation Ccfl Controller
• Manufacturer: Microsemi Corporation

Copyright © 2000
Rev. 1.1, 2006-02-27
TM
BRITE_O UT
DIM _ M ODE
BRITE_IN
BRITE_C
DIM _CLK
BRITE_R
ENABLE
DIV_248
VDD_A
VDD_P
I_R
CONTROL
DIMMING
BLOCK
I
I
1
1
ANADIM
VDD_A
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
DECODER
SHUTDOW N
DECODER
3 STATE
DUAL LDO
3 STATE
UVLO BIAS
V_BATT
SLEEP
+
-
VDD_A
FAULT
0.5V
2.0V
+
-
ANLG
1V
EXT
75K
ENABLE & BIAS
INT
0.5V
50K
GENERATOR
0.5V
PW R_GD
BLOCK
2.0V
REF
2.95V
5.3V
MUX
+
-
DIV
&
-
+
N
R
50K
F
VDAC
+
ANALOG DIM
-
6BIT
DIGITAL DIM
IGURE
COUNTER
6 BIT
Q
Q
B L O C K D I A G R A M
200K
Integrated Products
1 – Simplified Block Diagram
®
DIGITAL DIM
D
DIM CLOCK
RAMP_D
Microsemi
DDIM
F EXT
FAULT
IGNITE
Q S
RS
RESET
R
PW M CONTROL
BLOCK
RESET LOGIC
GENERATO R
COUNTER &
POW ER ON
Third Generation CCFL Controller
BRITE_OUT
RAMP
20 BIT
+
-
STRIKE MO DE
STEERING
RUN MODE
FAULT DET
FAULT DET
O UTPUT
LOGIC
RAMP_C
P
2.0V
+
-
ERROR
RODUCTION
AMP
+
+
+
-
-
-
RAMP_C
300m V
REGISTER
+
-
10 BIT
CONDITIONING BLOCK
RECTIFIER
RECTIFIER
RECTIFIER
OV_SNS
LAMP FEEDBACK
OC_SNS
OUTPUT DRIVERS BLOCK
LSNS
200K
D
ATA
GENERATOR
TIMMING
IGNITE
BLOCK
FAULT
10 BIT
IDAC
S
HEET
DETECTION
STRIKE
BLOCK
EA_OUT
OC_SNS
OV_SNS
EA_IN
I_SNS
AO UT
BOUT
GND
LX1689
Page 8