3-Channel Constant-Current LED Driver With Programmable PWM Control

The A6280 is a 3-channel constant current LED Driver that has a wide range of output currents. The A6280 controls LED brightness with a Pulse Width Modulation (PWM) scheme that gives the application the capability of displaying a billion colors in an RGB cluster. The maximum current is set by an external resistor.
The LED brightness is controlled by performing PWM control on the outputs. The brightness data of the PWM signal for each LED is stored in three 10-bit Registers The peak value for each LED CAN be adjusted (dot-corrected) to compensate for mismatch, aging, and temperature effects. All the internal latched Registers are loaded by a 31-bit Shift register One address bit controls whether dot correction Clock divider ratio or brightness data is loaded into the Registers The remaining bits are used for the data. This helps reduce the pin count of the A6280. To further lower the A6280 pin count, the PWM Clock and the serial bus Clock share the same pin and work concurrently to control LED brightness and to load data.
By Allegro MicroSystems, Inc.
A6280 's PackagesA6280 's pdf datasheet

A6280 Pinout, Pinouts
A6280 pinout,Pin out
This is one package pinout of A6280,If you need more pinouts please download A6280's pdf datasheet.

A6280 Application circuits
A6280 circuits
This is one application circuit of A6280,If you need more circuits,please download A6280's pdf datasheet.

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