A6282中文资料16-Channel Constant-Current LED Driver数据手册Allegro规格书

描述 Description

DiscontinuedThis part is discontinued. Samples are no longer available. Date of status change: May 6, 2016.Recommended Substitutions: For existing customer transition, and for new customers or new applications, contact Allegro Sales.

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 two 24-terminal packages: QFN (package ES) and TSSOP (LP), which have an exposed thermal pad. Both packages are lead (Pb) free with 100% matte tin leadframe plating.

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

特性 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

简介

A6282属于集成电路（IC）的LED驱动器。由制造生产的A6282LED 驱动器器件属于 LED 驱动器电源管理集成电路 (PMIC) 系列，可通过标称固定电压的电源为负载（通常为发光二极管）提供电流，并且电流可控。它与用于电压调节的类似产品的主要区别在于，这类器件提供较低的反馈电压（以提高系统能效），而且通常可对器件工作点进行外部控制，可在照明应用中用于实现调光功能。