AL1673-20CSP-13

NOT RECOMMENDED FOR NEW DESIGN NO ALTERNATIVE AL1673 UNIVERSAL FLYBACK AND BUCK-BOOST SINGLE STAGE DIMMABLE LED DRIVER Description Pin Assignments The AL1673 is a high performance single stage Flyback/Buck-Boost (Top View) converter, targeting dimmable LED lighting application. It is operating at BCM mode which results in good EMI and efficiency. The AL1673 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 AL1673 features low start-up current and low operation current. It 8 COMP 7 APWM 3 6 FB DRAIN 4 5 VCC CS 1 GND 2 DRAIN EP integrates multiple protections including over voltage, short circuit, over current and over temperature protection. It also integrates SO-8EP 600V/2A high voltage MOSFET. The AL1673 is available in SO-8EP package. Applications • • • 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/2A 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) Low System Cost Package: SO-8EP Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) • Halogen and Antimony Free. “Green” Device (Note 3) • • • • • • • • • Notes: AL1673 General LED Lighting Driver with Dimming Function General Purpose Constant Current Source Smart LED Lighting 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain