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
MHF)
MHF
half-bridge
(BHF
BHF).
BHF
Especially
for
Bipolar
half-bridge,
the
BL8305A
can
automatically adjust the base current intensity (BCI Auto-Adj and
BCI Auto-Adj),
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-bridge and so on.
4. The BL8305A have an internal power regulator at 6.35V and micro power
startup less than 150uA.
5. The BL8305A is a low cost design for ballast with few external
components.
http://www.belling.com.cn
-1-
Total
8 Pages
8/28/2006
BELLING [ SHANGHAI BELLING CO., LTD. ]
