DIODES AL1696-30AS7-13

The AL1696 is a highly integrated high power factor constant current converter for mains dimmable LED driver applications. The AL1696 controls the system operating in boundary conduction mode (BCM) to ease in EMI/EMC qualification and testing to meet the latest regulatory standards. The AL1696 with build-in MOSFET solution reduces the bill of material (BOM) cost by eliminating the need of auxiliary winding and external high voltage MOSFET. The AL1696 can be compatible with a wide range of dimmers including leading edge and trailing edge dimmers. Some dimmers can achieve deep dimming down to 1%. The AL1696 dimming curve is compliant with the standard of NEMA SSL6. The AL1696 is available in SO-7 package, which provides an extra pin spacing between the high voltage MOSFET’s drain and low voltage pins to increase electricity isolation. The AL1696 is a single stage, single winding inductor, high efficiency, and high power factor LED driver solution for mains input phase-cutting dimmable application. It is available for four internal MOSFET options (300V/3A, 400V/3A, 500V/2A and 600V/2A) which helps to reduce the overall LED driver solution’s size and optimize bom cost. The three different MOSFET options can cover most of 3~12W dimmable applications. The AL1696 internal MOSFET’s on time is limited by tON_MAX which is set through RT pin and internal 0.4V reference. The MOSFET will be turned off either its on-time triggers tON_MAX or input voltage on CS pin triggers internal 0.4V reference voltage. So if the tON_MAX is set to a very small value, the system will operate in constant on-time (tON_MAX) mode during the whole rectified mains cycle. It will result in a good power factor, but the line regulation will be worse. Normally, a recommended tON_MAX should make the system operate in constant on-time (tON_MAX) mode at valley of input voltage and peak current mode at the crest. A trade-off between PF and line regulation need to be done when setting tON_MAX. The AL1696 adopts source-driver technology to decrease the system operating current. Besides, it uses a novel tOFF time detection method without auxiliary winding. The AL1696 operates in boundary conduction mode (BCM) which can ease EMI design. All of them help AL1696 to have an extremely low bill of material (BOM).

• Internal MOSFET up to 300V/3A, 400V/3A, 500V/2A, 600V/2A
• Tight Current Sense Tolerance: ±3%
• Low Startup Current: 150μA
• Low Operation Current: 120μA (Switching Frequency at 5kHz)
• Single Winding Inductor
• Wide Range of Dimmer Compatibility
• Dimming Curve Compliant with NEMA SSL6
• Internal Protections: Under Voltage Lockout (UVLO), Leading-Edge Blanking (LEB), Cycle-by-cycle Over Current Protection (OCP), Output Short Protection (OSP), Over-Temperature Protection (OTP)
• SO-7 Package
• Totally Lead-Free & Fully RoHS Compliant
• Halogen and Antimony Free. “Green” Device

• Mains Dimmable LED Lamps
• Offline LED Power Supply Driver