lx1990 Microsemi Corporation, lx1990 Datasheet - Page 9

• Manufacturer Part Number: lx1990
• Description: Dual Programmable Led Current Sink
• Manufacturer: Microsemi Corporation

Copyright © 2001
Rev. 1.0d, 2005-03-14
TM
PW M
3.3V
10K
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
100K
ON/OFF
Figure 11 – Using the LX1990 With High Voltage Supplies
Optional circuit for
higher efficiency
2.2K
LX432SC
R
SET
Integrated Products
A P P L I C A T I O N
®
Microsemi
ISET GND
VDD
ENA
I
I
OUTA
OUTB
Dual Programmable LED Current Sink
10 W hite
LEDs each
output
20K
20K
BC846B x2
.47µF
48V
LX1990
Page 9