LX1691
Enhanced Multi-Mode CCFL Controller
®
TM
PRODUCTION DATA SHEET
TYPICAL APPLICATION
CN1
C6
100nF
50V, 20%
VIN
GND
1
2
3
4
FDC6305N
R8
SGE2697-1
6
4
1
6
BRITE
ENABLE
1
2
10
Ω
1
275VRMS
3.5mARMS
100KHz
3
4,5
C7
2.0pF
1:53
C5
3
C1
1.0µF 20%
6.3V
5
2
22µF
C2
100nF
10V 20%
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VDDP
VDDA
GND
VDDA
AOUT
BOUT
DD_CLK
OC_SNS
OV_SNS
I_SNS
VDDA
R5
470
DIM_MODE
BRITE_OUT EA_OUT
R6
200
R7
287
I_R
BRITE_R
R4
51.1K
C9
2.2nF
BRITE_IN
ENABLE
C4
4.7nF
C8
1.5nF 5%
16V COG
LX1691IPW
VDDA
R1
10K
R3
21.0K
R2
10K
C3
100nF
FIGURE 2 – LX1691 Inverter for PDA With Single Cell LI_ION Battery, Digital Dimming maximum current of
3.5mARMS @ 100KHz set to 1.33mA via R2/R3.
Lamp Current
R3
R7
mARMS
Brite Input Control Range (Linear DCV)
Min. Brite ‘Lo’ = 150mV
Max. Brite ‘Hi’ = 2.0V
Burst Rate Frequency = 200 Hz
Enable Input
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
21.0K
21.0K
21.0K
21.0K
32.4K
32.4K
60.4K
60.4K
200
221
249
287
249
294
226
301
Off Logic ‘Lo’ <= 0.80V
On Logic ‘Hi’ >= 1.7V
Copyright © 2003
Rev. 1.0, 7/16/2004
Microsemi
Page 9
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
MICROSEMI [ Microsemi ]
