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A6276

Allegro
Part Number A6276
Manufacturer Allegro
Description 16-Bit Serial Input Constant-Current Latched LED Driver
Published Dec 6, 2023
Detailed Description A6276 16-Bit Serial Input, Constant-Current Latched LED Driver Features and Benefits ▪ Up to 90 mA constant-current out...
Datasheet PDF File A6276 PDF File

A6276
A6276


Overview
A6276 16-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 ▪ Functional replacement for TB62706BN/BF Packages 24-pin DIP (A package) 24-pin SOICW (LW package) Not to scale Description The A6276 is specifically designed for LED-display applications.
Each BiCMOS device includes a 16-bit CMOS shift register, accompanying data latches, and 16 NPN constantcurrent sink drivers.
Except for package style and allowable package power dissipation, the device options are identical.
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 cascaded connections in applications requiring additional drive lines.
For inter-digit blanking, all output drivers can be disabled with an ENABLE input high.
Similar 8-bit devices are available as the A6275.
Two package styles are provided: through-hole DIP (suffix A) and surface-mount SOIC (suffix LW).
In normal applications, the copper leadframe and low logic-power dissipation of the DIP allow it to sink maximum rated current through all outputs continuously over the operating temperature range (90 mA, 0.
75 V drop, 85°C).
Both packages are lead (Pb) free, with 100% matte tin leadframe plating.
Functional Block Diagram 26185.
201I A6276 Selection Guide Part Number A6276EA-T A6276ELWTR-T Package 24-pin DIP 24-pin SOICW 16-Bit Serial Input, Constant-Current Latched LED Driver Packing 15 per tube 1000 per reel Ambient Temperature (°C) –40 to 85 –40 to 85 Absolute Maximum Ratings* Characteristic Symbol Notes Rating Units Supply Voltage VDD 7.
0 V Output Voltage VO –0.
5 to 17 V Input Voltage VROUT –0.
4 to VDD + 0.
4 V Output Current IO 90 mA Ground Cu...


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