AL1697 Datasheet | Diodes Incorporated

Description The AL1697 is a high performance, high power factor, high efficiency and high precision buck-boost LED driver for mains dimmable LED lamp applications. The AL1697 topology provides an accurate output current over wide line and load regulation. The wide switching frequency operates at boundary conduction mode (BCM) to ease EMI/EMC design, and testing to meet the latest regulatory standards. The AL1697 with built in MOSFET solution reduces the bill of material (BOM) cost by eliminating the need of auxiliary winding and an external high voltage MOSFET. The AL1697 has extensive protection features to enhance system safety and reliability. The AL1697 starts reducing output current when the driver’s temperature is higher than the built-in thermal foldback protection trigger point. Pin Assignments (Top View) VCC 1 RT 2 P 3 GND 4 SO-7 7D 6 CS 5 FB The AL1697 applies to a wide range of dimmers including leading edge and trailing edge dimmer. Some can achieve deep dimming down to 1%. The AL1697 dimming curve is pliant with the NEMA SSL6 standard. The AL1697 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. Applications - Mains Dimmable LED Lamps - Offline LED Power Supply Driver Features - Three Internal High-Voltage MOSFET Options: - RDSON) 2.8Ω(3A /400V), 4Ω(2A/600V) and 1.8Ω(4A /670V) for Super-Junction - Tight Current Sense Tolerance : ±3% - Low Startup Current: 130µA - Low Operation Current: 170µA (Switching Frequency at 4k Hz) - Single Winding Inductor - Wide Range of Dimmer patibility - NEMA SSL6 Dimming Curve pliant - Internal Protections - Under Voltage Lockout (UVLO) - Leading-Edge Blanking (LEB) - Cycle-by-cycle Over Current Protection (OCP) - Output Open/Short Protection (OVP/OSP) - Thermal Foldback Protection (TFP) - Over-Temperature Protection (OTP) - SO-7 Package - Totally Lead-Free & Fully Ro HS pliant (Notes 1 & 2) - Halogen and...