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
APPLICATION CIRCUITS
VBAT = 1.6V to 6.0V
- VLCD
VLCD = VIN to 25V
ON OFF
L1
47µH
1206 Case Size
DRV
IN
SRC
SW
OVP
LFB
CS
LX1744
FB
LSHDN
SHDN
BRT
REF
ADJ
GND
ON OFF
ILED = 20mA to 0mA
C1
4.7µF
RSET
15Ω
Figure 1 – LED Driver with Full-Range Dimming plus LCD Bias With Contrast Adjustment Via PWM Input
VBAT = 1.6V to 6.0V
- VLCD
VLCD = VIN to 25V
ON OFF
L1
47µH
1206 Case Size
DRV
IN
SRC
SW
OVP
LFB
CS
LX1744
FB
LSHDN
SHDN
BRT
ON OFF
ILED = 20mA to 0mA
C1
4.7µF
RSET
15Ω
REF
ADJ
GND
Figure 2 – LED Driver with Full-Range Dimming plus LCD Bias With Contrast Adjustment Via Analog Voltage Input
Note: The component values shown are only examples for a working system. Actual values will vary greatly depending on desired parameters, efficiency, and
layout constraints.
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 6
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