AL1672中文资料SINGLE STAGE DIMMABLE BUCK CONVERTER WITH 600V/4A MOSFET数据手册Diodes规格书

描述 Description

The AL1672 is a high performance single stage Buck convertor, targeting dimmable LED lighting application. It is operating at BCM mode which results in good EMI and efficiency.The AL1672 can support multiple dimming modes. When a 0.3~2.4V DC signal is applied on APWM pin, the device will operate in analog dimming mode. When a digital signal is applied on APWM pin, the device works at PWM dimming mode.The AL1672 features low start-up current and low operation current. It integrates multiple protections including over voltage, short circuit, over current and over temperature protection. It also integrates 600V/4A high voltage MOSFET.The AL1672 is available in SO-8EP package.

特性 Features

•Valley Switching for Low Switching Loss
•Low Start-Up Current 
•High PF and Low THD
•High Efficiency
•Tight LED Current Variation Range
•Tight Output Open Voltage Variation Range
•Integrates 600V/4A MOSFET 
•Support Both PWM Dimming and Analog Dimming 
•PWM Dimming Range:3% to 100% at 1kHz PWM Frequency
•Analog Dimming and PWM-to-DC Dimming Range:18% to 100%;
•Internal Protections
•Under Voltage Lock Out (UVLO)
•Output Over Voltage Protection (OVP)
•Output Short Protection (OSP)
•Over Current Protection (OCP)
•Thermal Fold-Back Protection (TFP)
•Over Temperature Protection (OTP)

应用 Application

•General LED Lighting Driver with Dimming Function
•General Purpose Constant Current Source
•Smart LED Lighting

简介

AL1672属于集成电路（IC）的LED驱动器。由制造生产的AL1672LED 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。