AP1688

OBSOLETE – PART DISCONTINUED AP1688 PART OBSOLETE - USE AL1665 AP1688 AC/DC, HIGH PF, HIGH EFFICIENCY, UNIVERSAL MAINS LED DRIVER CONTROLLER Description The AP1688 is a high-performance AC/DC PFC and constant-current controller for universal mains LED driver applications. The device is a buck controller that operates as a boundary conduction mode (BCM) to achieve high efficiency and easy EMI. An open loop algorithm is adopted in the AP1688, which makes the system achieve excellent line and load regulations with high PF for universal mains input. The AP1688 features fast start-up, low start-up current, low operation current, and high efficiency. The device also has rich protection features including overvoltage, short- and open-circuit, overcurrent, and overtemperature protection. The AP1688 is available in SO-8 package. Pin Assignments (Top View) NC 1 VS 2 VA 3 CS 4 8 VCC 7 OUT 6 GND 5 FB (SO-8/ M Package) Features  Optimized for Buck Topology  Boundary Conduction Mode (BCM) Operation to Achieve High Efficiency  High Power Factor > 0.9  High Efficiency > 90%  System Current Accuracy: ±5%  Good Line Regulation and Load Regulation  Low Start-up Current  Tight CC Regulation Performance for Universal Input Mains Voltage Range  Eliminates Control Loop Compensation Circuitry  Easy EMI  Open-Load and Reload Detection  Overtemperature Protection  Overcurrent Protection  Overvoltage and Short- and Open-Circuit Protection  Totally Lead-Free & Fully RoHS Complia...