LX1744 Просмотр технического описания (PDF) - Microsemi Corporation
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LX1744 Datasheet PDF : 16 Pages
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INTEGRATED PRODUCTS
LX1744
Dual Output Boost – LED Driver / LCD Bias
PRODUCTION DATASHEET
test
points
1
Vin
-VLCD 1
VLCD 1
/SHDN 1
ADJ 1
GND 1
EVALUATION BOARD
+ C6
spare
+ C1
4.7uF
6.3V
L2
47.0uH
CR3
C8
C9 UPS5819
1uF CR4
1uF CR2
C4 R3 UPS5819
1000pF 1M
+ C7
4.7uF
R6
35V
72K
R11
10K
L1
J3
2
1
47.0uH
U1 LX1744TSSOP
6
12
1
3
2
4
IN
SW
FB
/SHDN
ADJ
DRV
SRC
OVP
LFB
CS
/LSHDN
BRT
REF
13
10
9
11
7
8
5
C10
.1uF
R8
R7
R9
100K
CR1
Q1
UPS5819
FDV303N
C3 R1
1000pF 1M
R4
1K
J3
+ C2 + C5
LED1 4.7uF spare
35V
LED2
LED3
R2
72K
LED4
VIN
R5
R12
15
10K
+ C11
2.2uF
16V
C12
.1uF
R10
100K
Figure 10 – LX1744EVAL Evaluation Board Schematic
1 DRV
test
points
1 VOUT
1 LFB
1 GND2
1 /LSHDN
1 BRT
Copyright © 2000
Rev. 1.1b, 2005-03-01
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 13
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