AL1781中文资料Single-Channel Dimmable Linear LED Driver数据手册Diodes规格书

描述 Description

The a AL1781, a single-channel dimmable Linear LED driver with PWM dimming control, is targeted for 1-Channel dimmable Smart Connected Lighting (SCL) applications. It serves as the LED driving element along with AC-DC Power Conversion Block and Intelligent wireless MCU as an emerging connected lighting applications.

特性 Features

•Input Voltage Range: 6.5V to 30V
•Independent PWM dimming control for each channel
•Adjustable Reference Current by external reference resistors
•LED Current Accuracy ≤ ±4%
•Maximum LED current 1500mA for AL1781 and 750mA Per channel for AL1782
•Adaptive Thermal Management (ATM) scheme to minimize power dissipation
•High Frequency E-flicker free PWM dimming 
•Internal Protections: 
•Undervoltage Lockout (UVLO);
•LED string open/short protection;
•Over-temperature protection (OTP): Thermal shutdown and auto thermal recovery
•Fault Reports: UVLO, OTP, LED Open/Short

应用 Application

•1-Channel Dimmable Smart Connected Light (SCL) Bulbs
•Multiple-Channel of SCL Bulbs
•Smart Connected LED Tubes, Panel Lights, Troffers, and Ceiling Lights

简介

AL1781属于集成电路（IC）的LED驱动器。由制造生产的AL1781LED 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。