INDUSTRY’S SMALLEST PFC BOOST IC HOME PAGE The IRS2505LTRPbF is the industry’s smallest power factor correction (PFC) boost IC in a 5-pin SOT23 package for switch mode power supply (SMPS), LED drivers, fluorescent and HID electronic ballast applications. DATASHEET Advantages The IRS2505L extends IR’s µPFC™ PFC control IC family and features a novel control system that can implement a PFC controller with only five pins, significantly reducing overall system size, component count and system cost. The IRS2505L may be configured to operate in critical conduction boost PFC, buck or flyback configuration. The IRS2505L offers wide input voltage and load range, regulated DC bus output voltage and programmable DC bus voltage level. Protection features include DC bus over-voltage protection, programmable MOSFET over-current protection and integrated ESD protection on all pins. Micro-power start-up current, 20.8V internal Zener clamp on VCC and latch immunity on all inputs and outputs are also features. PRESS RELEASE Features Critical-conduction mode PFC control High PF and ultra-low THD Wide input voltage and load range Regulated DC bus output voltage Programmable DC bus voltage level DC bus over-voltage protection Programmable MOSFET over-current protection Inductor current zero-crossing detection Micro-power start-up current 20.8V internal Zener clamp on VCC Excellent latch immunity on all inputs and outputs Integrated ESD protection on all pins Small SOT-23 5L package HI-RES GRAPHIC July 2013