Serial-Input Constant-Current Latched LED Drivers With Open LED Detection

The A6278 and A6279 devices are specifically designed for LED Display applications. Each of these BiCMOS devices includes a CMOS Shift register accompanying data Latches and NPN constant-current sink drivers. The A6278 contains 8 sink drivers, while there are 16 in the A6279.
The CMOS Shift register and Latches allow direct interfacing with microprocessor-based systems. With a 3.3 or 5 V Logic supply, typical serial data-input rates CAN reach up to 25 MHz. The LED drive current is determined by the users selection of a single resistor. A CMOS serial data output permits cascading between multiple devices in applications requiring additional drive lines. Open LED connections CAN be detected and signaled back to the host Microprocessor through the SERIAL DATA OUT pin.
By Allegro MicroSystems, Inc.
A6278 's PackagesA6278 's pdf datasheet
A6278EA-T
A6278ELP-T
A6278ELPTR-T
A6278ELW-T
A6278ELWTR-T
A6279EA-T
A6279EET-T
A6279ELP-T
A6279ELPTR-T
A6279ELW-T
A6279ELWTR-T
A6279




A6278 Pinout, Pinouts
A6278 pinout,Pin out
This is one package pinout of A6278,If you need more pinouts please download A6278's pdf datasheet.

A6278 circuits will be updated soon..., now you can download the pdf datasheet to check the circuits!

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