LX1689IPW MICROSEMI, LX1689IPW Datasheet - Page 9
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LX1689IPW
Manufacturer Part Number
LX1689IPW
Description
Manufacturer
MICROSEMI
Datasheet
1.LX1689IPW.pdf
(14 pages)
Specifications of LX1689IPW
Driver Type
CCFL
Operating Supply Voltage (typ)
3.3/5/9/12/15/18/24V
Operating Temperature (min)
-40C
Operating Temperature (max)
85C
Operating Temperature Classification
Industrial
Package Type
TSSOP
Pin Count
20
Mounting
Surface Mount
Operating Supply Voltage (min)
3V
Operating Supply Voltage (max)
28V
Lead Free Status / RoHS Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LX1689IPW
Manufacturer:
MSC
Quantity:
1 882
Copyright © 2000
Rev. 1.1, 2006-02-27
Alternate Maximum Lamp Current Table
Lamp current | R1 value |
4.0mArms | 6.65K 1%
3.5mArms | 6.65K 1%
3.0mArms | 6.65K 1%
2.5mArms | 11.8K 1%
2.0mArms | 11.8K 1%
1.5mArms | 11.8K 1%
Burst Rate Freq: 195Hz ± 4%
Min. Brite Pos Duty <= 1.6%
PWM freq 7.5Khz to 100Khz
Max. Brite Pos Duty >= 92%
BRITE Input Control Range
(2.5V to 3.3V Logic PWM)
Min. Brite 'LO' <= 0.50V
Max. Brite 'HI' >= 2.00V
TM
* Conventional polarity means that the lamp brightness increases with increasing voltage on the BRITE_IN pin.
Reverse polarity means that brightness decreases with increasing voltage.
(Linear DC)
Floating or VDD_A/2
Floating or VDD_A/2
ENABLE
DIM_MODE
BRITE
V
GND
| 221 1%
| 255 1%
| 294 1%
| 200 1%
| 249 1%
| 332 1%
VDD_A
BATT
R7 Value
GND
GND
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
OFF: Logic 'LOW' =< 0.8V
Logic Level: 2.5V to 3.3V
ON: Logic 'HI' = >1.5V
Enable input
VDD_A
C1
100nF 16V
N.C.
External Clock Source
6.65
100nF 16V
F
R1
K 1%
IGURE
DIM_CLK
VDD_A
VDD_A
3.0V < V
T Y P I C A L A P P L I C A T I O N
Nominal 3.2V to 4.2V
C2
GND
GND
AOUT
BOUT
DIM_CLK
DIM_MODE
BRITE_R
BRITE_IN
GND
DIV_248
BRITE_C
ENABLE
2 – LX1689 Typical 1W Application
D I M M I N G T A B L E
100nF 16V
Integrated Products
BATT
®
LX1689CPW
Microsemi
C3
< 5V
100nF 16V
BRITE_OUT
C4
OC_SNS
EA_OUT
OV_SNS
VDD_P
VDD_A
EA_IN
I_SNS
Dimming from Divided
Dimming from divided
Dimming from divided
V
BATT
I_R
DIMMING MODE
Analog Dimming
Analog Dimming
DIM_CLK input
Run Frequency
Run Frequency
External Burst
Internal Burst
Internal Burst
Third Generation CCFL Controller
VDD_A
C5
470pF 16V
51.1K
10K
P
R4
R2
1%
RODUCTION
C11
1.0uF 10V
10%
R5
10
U2 FDC6305N
FAIRCHILD
1
3
R3
4.99K 1%
DIMMING POLARITY*
6
D
2,5
4
ATA
*C9 PCB C
APPROXIMATELY
PCB CAP
A
Conventional
Conventional
Conventional
16V
1nF
C7
REA
Reverse
Reverse
(
MM
+
T1 SGE2697-1
MICROSEMI
1
2
3
10V 20%
S
LMT1410
²) = D(mm) x C x 113097 E
100µF
TANT
1:53
C6
AREA FORMULA
HEET
APACITOR COPPER AREAS TO EQUAL
120
R6
34
4,5
2
6
MM FOR
25V 5%
100nF
1.5nF
COG
50V
C10
C8
C9*
2pF
(K
0.80
TYPICIALLY
MM THICK
LX1689
+9
/ K
= 5.35)
275V
I
100kHz
R7
255Ω 1%
PCB
OUT
Page 9
= 3.5m
RMS
Lamp
Lamp
±