A6211 ALLEGRO [Allegro MicroSystems], A6211 Datasheet - Page 15

• Manufacturer Part Number: A6211
• Description: Constant-Current 3-Ampere PWM Dimmable Buck Regulator LED Driver
• Manufacturer: ALLEGRO [Allegro MicroSystems]

A6211
10) To improve thermal performance, use multiple layers for
GND. Place as many vias as possible to the ground plane around
the anode of the asynchronous diode.
11) The thermal pad under the A6211 must connect to the ground
plane using multiple vias. More vias will insure lower operating
temperature and higher efficiency.
12) Connection to the LED array should be kept short. Exces-
sively long wires can cause ringing or oscillation. When the LED
array is separated from the converter board and an output capaci-
tor is used, the capacitor should be placed on the converter board
to reduce the effect of stray inductance from long wires.
Constant-Current 3-Ampere PWM Dimmable
Buck Regulator LED Driver
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
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