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Related Links:

Datasheets:
A6282: 16-Channel Constant-Current LED Driver (PDF)

Selection Guides:
LED Display Drivers

when this product is updated

Press Releases:
A6282 and A6285: Allegro MicroSystems, Inc. Introduces Two 16-Channel LED Driver ICs for Display Applications

A6282
16-Channel Constant-Current LED Driver

Features

• 16 constant-current outputs, up to 50 mA each
• LED output voltage up to 12 V
• 3.0 to 5.5 V logic supply range
• Schmitt trigger inputs for improved noise immunity
• Power-On Reset (POR), all register bits = 0
• Low-power CMOS logic and latches
• High data input rate: 30 MHz
• Output current accuracy: between channels
  < ±3% and between ICs ±7%, over the full operating temperature range
• Internal UVLO and thermal shutdown (TSD) circuitry

Applications

• Monocolor, multicolor, or full-color LED display
• Monocolor, multicolor, or full-color LED signboard
• Display backlighting
• Multicolor LED lighting

Description

The A6282 device is designed for LED display applications. This CMOS device includes an input shift register, accompanying data latches, and 16 MOS constant current sink drivers.

The CMOS shift registers 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 30 MHz. The LED drive current level can be set by a single external resistor, selected by the application designer. A serial data output permits cascading of multiple devices in applications requiring additional drive lines.

The A6282 is available in a variety of 24-terminal packages: QFN (package ES) and eTSSOP (LP), which have an exposed thermal pad, and SOIC (LW). All packages are lead (Pb) free with 100% matte tin leadframe plating.

Typical Applications

Functional Block Diagram

Complete Part Numbers

Part Number	Package Type	RoHS Compliant	Part Composition/ RoHS Data	Temperature	Comments	Samples	Distributor Stock
A6282EES-T	24-lead QFN	Yes	view data	-40 °C to  85 °C	new	Due to warehouse relocation, samples will be unavailable until August 1, 2008. Contact your sales rep or purchase from distributor.
A6282EESTR-T	24-lead QFN	Yes	view data	-40 °C to  85 °C	new	Due to warehouse relocation, samples will be unavailable until August 1, 2008. Contact your sales rep or purchase from distributor.
A6282ELP-T	24-lead TSSOP	Yes	view data	-40 °C to  85 °C	new	Due to warehouse relocation, samples will be unavailable until August 1, 2008. Contact your sales rep or purchase from distributor.
A6282ELPTR-T	24-lead TSSOP	Yes	view data	-40 °C to  85 °C	new	Due to warehouse relocation, samples will be unavailable until August 1, 2008. Contact your sales rep or purchase from distributor.
A6282ELW-T	24-lead SOIC	Yes	view data	-40 °C to  85 °C	new	Due to warehouse relocation, samples will be unavailable until August 1, 2008. Contact your sales rep or purchase from distributor.
A6282ELWTR-T	24-lead SOIC	Yes	view data	-40 °C to  85 °C	new	Due to warehouse relocation, samples will be unavailable until August 1, 2008. Contact your sales rep or purchase from distributor.

Allegro's products are not to be used in life support devices or systems, if a failure of an Allegro product can reasonably be expected to cause the failure of that life support device or system, or to affect the safety or effectiveness of that device or system.