BL8305A

BL8305A BALLAST CONTROL IC The ballast control IC BL8305A is an improved version of the BL8301. The BL8305A provides more functionality and is easier to use than previous IC BL8301. The BL8305A optimizes the compatibility of driving MOSFET half-bridge (MHF) or Bipolar half-bridge (BHF). Especially for Bipolar half-bridge, the BL8305A can automatically adjust the base current intensity (BCI Auto-Adj), and guarantee that the half-bridge is in the optimum condition and reduces the power loss of half-bridge. It also improves the load adaptive of bipolar half-bridge. The BL8305A changes the timing component connection structure according to BL8301, so it is easier to design simply dimming products. The BL8305A has fully protections and all pins have Latch immunity and ESD protection, available in both PDIP14 and SOP14 packages. FEATURES Driving both MHF and BHF Automatically adjusting the BCI of BHF Programmable preheat frequency, preheat time and run frequency Comprehensive protection Micro power startup less than 150uA Latch immunity and ESD protection BRIEF INTRODUCTION 1. The BL8305A automatically provides a dead time 3us for BHF and 1.2us for MHF. 2. The BL8305A features include on power preheat and ignition. Preheat frequency, preheat time and run mode frequency are all programmable by external components. 3. Comprehensive protections such as protection from over current of Half-bridge, filament failures, ignition failure, end of life, detecting base current of half...