參數(shù)資料
型號: LX1689IPW-TR
廠商: MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP
元件分類: 穩(wěn)壓器
英文描述: FLUORESCENT LIGHT CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO20
封裝: ROHS COMPLIANT, PLASTIC, TSSOP-20
文件頁數(shù): 13/14頁
文件大?。?/td> 296K
代理商: LX1689IPW-TR
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 8
Copyright
2000
Rev. 1.1, 2006-02-27
WWW
.Microse
m
i
.CO
M
LX1689
Third Generation CCFL Controller
PRODUCTION DATA SHEET
TM
BLOCK DIAGRAM
V_BAT T
ENABLE
VDD_A
VDD_P
I_R
BRIT E_IN
BRIT E_O UT
BRITE_R
DIM _CLK
DIM_ MO DE
DIV_248
GND
OV_SNS
OC_SNS
I_SNS
EA_IN
EA_O UT
BO UT
AO UT
SLEEP
SHUTDOW N
DUAL LDO
UVLO BIAS
75K
50K
100K
1
00K
50K
+
-
2.0V
0.5V
BRIT E_C
200K
VDD_A
FAULT
+
-
3 STATE
DECODER
3 STATE
DECODER
MUX
&
DIV
6BIT
VDAC
6 BIT
COUNTER
RS
1V
RESET
EXT
ANLG
INT
Q
D
Q S
R
DIGITAL DIM
ANALOG DIM
10K
OUTPUT
STEERING
LOGIC
10K
RAMP_D
FAULT
+
-
RAMP_C
+
-
BRITE_OUT
DIM CLOCK
IGNITE
DIGITAL DIM
100K
LSNS
RECTIFIER
OC_SNS
RECTIFIER
OV_SNS
RECTIFIER
200K
RUN MODE
FAULT DET
STRIKE MODE
FAULT DET
RAMP
GENERATOR
20 BIT
COUNTER &
POW ER ON
RESET LOGIC
10 BIT
REGISTER
10 BIT
IDAC
RAMP_C
RMP_
D
O
U
T
F EXT
DDIM
FAULT
IGNITE
5.3V
2.95V
2.0V
REF
PW R_GD
R
+
-
2.0V
ANADIM
N
ERROR
AMP
DIMMING
CONTROL
BLOCK
TIMMING
GENERATOR
BLOCK
STRIKE
DETECTION
BLOCK
LAMP FEEDBACK
CONDITIONING BLOCK
OUTPUT DRIVERS BLOCK
PW M CONTROL
BLOCK
ENABLE & BIAS
GENERATOR
BLOCK
+
-
VDD_A
I
1
I
1
+
-
300m V
FIGURE 1 – Simplified Block Diagram
BB
LL
OO
CC
KK
DD
IIAA
GG
RR
AA
MM
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