LX1990 Datasheet, PDF (7/11 Pages) Microsemi Corporation – Dual Programmable LED Current Sink

INTEGRATED PRODUCTS
LX1990
Dual Programmable LED Current Sink
Figure 2 – Auto Dashboard
or Instrument Front Panel
LED Array
APPLICATIONS
3.3V
ON/OFF
VDD I_OUTB
ENA I_OUTA
ISET GND
4K
Open Collector or
Open Drain Drive
+5V
ON/OFF
1.25V
D0
D1
D2
OUT
D3
.1µF
VDD I_OUTB
ENA I_OUTA
ISET GND
4K
W HT
GRN
GRN
+5V
Figure 3 – Color LCD Display &
Keypad Illumination
ON/OFF
Figure 4 – Variable Current Driver
VDD I_OUTB
ENA I_OUTA
ISET GND
100K
4K
Copyright  2001
Rev. 1.0c, 2002-05-29
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
V_LOAD
.1µF
Up to 10 Volts
LOAD
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