A6276ELW集成電路（IC）的LED驅(qū)動器規(guī)格書PDF中文資料

A6276ELW屬于集成電路（IC）的LED驅(qū)動器。由Allegro MicroSystems制造生產(chǎn)的A6276ELWLED 驅(qū)動器器件屬于 LED 驅(qū)動器電源管理集成電路 (PMIC) 系列，可通過標稱固定電壓的電源為負載（通常為發(fā)光二極管）提供電流，并且電流可控。它與用于電壓調(diào)節(jié)的類似產(chǎn)品的主要區(qū)別在于，這類器件提供較低的反饋電壓（以提高系統(tǒng)能效），而且通常可對器件工作點進行外部控制，可在照明應用中用于實現(xiàn)調(diào)光功能。

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 constant-current 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’s 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. Similar 8-bit devices are available as the A6275EA and A6275ELW.

FEATURES

■ To 90 mA Constant-Current Outputs

■ Under-Voltage Lockout

■ Low-Power CMOS Logic and Latches

■ High Data Input Rate

■ Functional Replacement for TB62706BN/BF