A6280_V Datasheet, PDF (11/13 Pages) Allegro MicroSystems – 3-Channel Constant-Current LED Driver with Programmable PWM Control

A6280
3-Channel Constant-Current LED Driver
with Programmable PWM Control
Applications Drawings
+ ^{8.5 V}
10 μF
–
Blue
LEDs
Green
LEDs
Red
LEDs
V_On
1 to 3 V
System Logic
Clock
Data
Latch
Output Enable
Tie LGND and PGND
to PAD externally
CI
A6280
CO
OEI
OEO
LI
PAD
LO
SDI
SDO
1 μF
X5R
10 kΩ
A6280
Maximum of
250 pixels
Figure 8. Application Driving 3 RGB LEDs at 75 mA Peak
+ ^{10 V}
10 μF
–
2Ω
0.5 W
V_On
1 to 3 V
System Logic
Clock
Data
Latch
Output Enable
Tie LGND and PGND
to PAD externally
CI
CO
A6280
OEI
OEO
LI
PAD
LO
SDI
SDO
1 μF
10 V
5 kΩ
Figure 9. Application Driving High Power LED at 450 mA
A6280
Maximum of
250 pixels
Allegro MicroSystems, LLC
11
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com