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Datasheets:
A6282: 16-Channel Constant-Current LED Driver (PDF)
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LED Display Drivers
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A6282 and A6285: Allegro MicroSystems, Inc. Introduces Two 16-Channel LED Driver ICs for Display Applications
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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
| Part Number | Package Type | RoHS Compliant |
Part Composition/ RoHS Data |
Temperature | Comments | Samples | Distributor Stock |
|---|---|---|---|---|---|---|---|
| A6282EESTR-T | 24-lead QFN | Yes | view data | -40 °C to 85 °C | new |
Contact Local Sales Representative or check distributor stock |
|
| A6282ELPTR-T | 24-lead TSSOP | Yes | view data | -40 °C to 85 °C | new |
Contact Local Sales Representative or check distributor stock |
|
| A6282ELWTR-T | 24-lead SOIC | Yes | view data | -40 °C to 85 °C | discontinued |
Contact Local Sales Representative or check distributor stock |
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.