AL8821中文资料50V, 2A BOOST LED DRIVER数据手册Diodes规格书

描述 Description

The AL8821 is a boost converter that delivers an accurate constant current for MR16 and similar LED Lamps. With proprietary control scheme, the LED driver is compatible with many commonly used electronic transformers and provides designs with High Power Factor (PF) and low Total Harmonic Distortion (THD) for these applications. The operation frequency is up to 1MHz that allows the use of small size inductor. With the package of SO-8EP, the AL8821 has small thermal resistance and can be used for wide range of output power. The driver can be used for dimmable MR16 application and can be compatible with leading-edge dimmer and trailing-edge dimmer.

特性 Features

Wide Input Voltage Range: 5V to 36V
Internal 40V NDMOS Switches
Continuous Conduction Mode (CCM) Operation
Up to 1MHz Switching Frequency
High PF > 0.9 and Low THD < 30% and low Ripple < 20%
Compatible With Leading-edge Dimmer And Trailing-edge Dimmer
Internal Protections
Under Voltage Lock Out (UVLO)
Output Open
Over Temperature Protection (OTP)

应用 Application

Non-dimmable MR16 Lamps
Dimmable MR16 Lamps
General Illumination Lamps

简介

AL8821属于集成电路（IC）的LED驱动器。由制造生产的AL8821LED 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。