AL1663RS-13 Diodes Incorporated

AL1663/AL1663R UNIVERSAL FLYBACK AND BUCK-BOOST SINGLE STAGE DIMMABLE LED CONTROLLER Description Pin Assignments The AL1663/AL1663R is a high performance single stage Flyback and Buck-boost controller, targeting dimmable LED lighting (Top View) application. It is a primary side regulation (PSR) controller which can NC 8 provide accurate constant current (CC) regulation without opto- APWM 1 8 1 APWM FB coupler and secondary control circuitry. It is operating at BCM mode 2 COMP 2 VCC FB 7 PWMD 7 and switching at the valley which results in good EMI and efficiency. 3 6 VCC 3 6 OUT CS COMP With working in constant on time, the system achieves high PF and 5 GND 4 OUT CS 4 5 GND low total harmonic distortion (THD) under universal input voltage. The AL1663/AL1663R can support multiple dimming modes. When a AL1663 AL1663R 0.3V to 2.4V DC signal is applied on APWM pin, the device will SO-8 SO-8 operate in analog dimming mode. When a digital signal is applied on APWM pin, the device works at PWM dimming mode. And for AL1663 Applications When a digital signal is applied on PWMD pin and the APWM pin is General LED Lighting Driver with Dimming Function connected with a hundreds of nF capacitor, the device will work in General Purpose Constant Current Source PWM-to-DC dimming mode. LED Backlighting Driver Smart LED Lighting The AL1663/AL1663R features low start-up current and low operation current. It integrates multiple protections including over voltage, short circuit, over current and over temperature protection. The AL1663/AL1663R is available in SO-8 package. Features Primary Side Regulation without Opto-coupler 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 Support both PWM Dimming and Analog Dimming 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-8 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. Green Device (Note 3) Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See AL1663/AL1663R Typical Applications Circuit C7 R14 T1 L1 D3 + C5 OUT R10 R TH C6 C1 C2 F1 D2 AC VR1 Input Aux R4 D1 DB1 Cvcc R5 D4 VCC PWMD APWM Q1 FB OUT AL1663 R9 COMP R6 CS GND Rcomp U1 R CS Ccomp AL1663 Flyback Application Circuit L1 T1 R TH OUT C2 R11 C1 C6 F1 D3 AC VR1 Input Aux R4 D1 DB1 Cvcc R5 D4 VCC PWMD APWM Q1 OUT FB AL1663 R9 COMP R6 CS GND Rcomp R CS Ccomp AL1663 Buck-Boost Application Circuit R14 C7 T1 L1 D3 + C5 OUT R10 R TH C6 C2 C1 F1 D2 AC VR1 Input Aux R4 D1 DB1 Cvcc R5 D4 VCC NC APWM Q1 FB OUT AL1663R R9 COMP R6 CS GND Rcomp U1 RCS Ccomp AL1663R Flyback Application Circuit 2 of 15 AL1663/AL1663R March 2017 Diodes Incorporated www.diodes.com Document number: DS38466 Rev. 2 - 2 +