LX1745(2006) Просмотр технического описания (PDF) - Microsemi Corporation
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LX1745 Datasheet PDF : 16 Pages
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LX1745
TM
®
Triple Output Boost – LED Driver / LCD Bias
PRODUCTION DATASHEET
APPLICATION CIRCUITS
- VLCD
VBAT = 1.6V to 6.0V
D3
D4
VLCD1 = VIN to 25V
(Feedforward Capacitor)
D2
R1
R2
VLCD2 = VIN to 25V
D3
R3
L1
47μH
1206 Case Size
IN
SW1
DRV
SRC
OVP
LFB
FB1
CS
LX1745
SW2
REF
LSHDN
BRT
FB2
SHDN1
GND
ADJ1
SHDN2 ADJ2
D1
R5
R6
ILED = 20mA to 0mA
C1
4.7μF
RCS
ON OFF
ON OFF
RLED
15Ω (typ)
R4
ON OFF
Figure 2 – LED Driver with Full-Range Dimming plus LCD Bias With Contrast Adjustment Via PWM Input
Copyright © 2000
Rev. 1.2, 2006-02-27
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 6
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