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A6275

Allegro
Part Number A6275
Manufacturer Allegro
Description 8-Bit Serial Input Constant-Current Latched LED Driver
Published Dec 6, 2023
Detailed Description A6275 8-Bit Serial Input Constant-Current Latched LED Driver Features and Benefits ▪ Up to 90 mA constant-current outpu...
Datasheet PDF File A6275 PDF File

A6275
A6275


Overview
A6275 8-Bit Serial Input Constant-Current Latched LED Driver Features and Benefits ▪ Up to 90 mA constant-current outputs ▪ Undervoltage lockout ▪ Low-power CMOS logic and latches ▪ High data-input rate ▪ Pin-compatible with TB62705CP Packages 16-pin DIP (A package) Not to scale 16-pin SOICW (LW package) Description TheA6275 is specifically designed for LED display applications.
Each BiCMOS device includes an 8-bit CMOS shift register, accompanying data latches, and eight NPN constant-current sink drivers.
The CMOS shift register and latches allow direct interfacing with microprocessor-based systems.
With a 5 V logic supply, typical serial data-input rates are up to 20 MHz.
The LED drive current is determined by the user selection of a single resistor.
A CMOS serial data output permits cascade connections in applications requiring additional drive lines.
For inter-digit blanking, all output drivers can be disabled with an ENABLE input high.
A similar 150 mA output device is available as the A6277; a similar 16-bit device is available as the A6276.
Two package styles are provided: a through-hole DIP (suffix A) and a surface-mount SOICW (suffix LW).
Under normal applications, copper leadframes and low logic-power dissipation allow these devices to sink maximum rated current through all outputs continuously over the operating temperature range (90 mA, 0.
9 V drop, 85°C).
Both packages are lead (Pb) free, with 100% matte tin leadframe plating.
CLOCK SERIAL DATA IN LATCH ENABLE GROUND Functional Block Diagram VDD UVLO SERIAL-PARALLEL SHIFT REGISTER LATCHES MOS BIPOLAR LOGIC SUPPLY SERIAL DATA OUT OUTPUT ENABLE (ACTIVE LOW) 26185.
200F OUT 0 OUT 1 OUT 2 IO REGULATOR OUT N R EXT Dwg.
FP-013-3 A6275 Serial-Input Constant-Current Latched LED Driver with Open LED Detection and Dot Correction Selection Guide Part Number Package A6275EA-T A6275ELWTR-T A6275SLWTR-T 16-pin DIP 16-pin SOICW 16-pin SOICW Packing 25 per tube 1000 per reel 1000 per reel Ambient Tempe...


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