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BL8305A PDF даташит

Спецификация BL8305A изготовлена ​​​​«SHANGHAI BELLING» и имеет функцию, называемую «BALLAST CONTROL IC».

Детали детали

Номер произв BL8305A
Описание BALLAST CONTROL IC
Производители SHANGHAI BELLING
логотип SHANGHAI BELLING логотип 

8 Pages
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BL8305A Даташит, Описание, Даташиты
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-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









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BL8305A Даташит, Описание, Даташиты
BL8305A BALLAST CONTROL IC
6. The BL8305A is available in both PDIP14 and SOP14 packages. All pins
have Latch immunity and ESD protection.
APPLICATION INFORMATION
400V
IN4148 1n
Rstart
1M
15V
175K
Rp1
4.7u
C1 Rp2 Rt Ct Cp
BL8305A
Vcc OUT1
Vdc OUT2
Rpre HV
Rt LD
Ct FD
Cpre Pro
POFF GND
RHV
430K
Ro 30
Co 47n
22
13005
10
2 22n
13005
10
2 22n
IN4148 100K
0.1u
2
FR107
100n 2mH
T8
FR107 36W
8.2n
Attention: This shematic for T8 36W only, other types lamp should change some components
Fig. 1
400V
IN4148 1n
Rstart
1M
15V
175K
Rp1
4.7u
C1 Rp2 Rt Ct Cp
BL8305A
Vcc OUT1
Vdc OUT2
Rpre HV
Rt LD
Ct FD
Cpre Pro
POFF GND
Co 1u
IRF830
100
IRF830
100
0.1u
2
100n 2mH
T8
36W
8.2n
Attention: This shematic for T8 36W only, other types lamp should change some components
Fig. 2
http://www.belling.com.cn
-2-
Total 8 Pages
8/28/2006









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BL8305A Даташит, Описание, Даташиты
BLOCK DIAGRAM
BL8305A BALLAST CONTROL IC
LEAD ASSIGNMENTS & DEFINITION
Pin#
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Symbol
VCC
VDC
Rpre
Rt
Ct
Cpre
POff
GND
Pro
FD
LD
HV
OUT2
OUT1
Description
Power Supply
6.3V regulator output
Preheat frequency timing
voltage
Oscillator timing resistor
Oscillator timing capacitor
Preheat timing capacitor
End of preheat output
IC power &signal ground
Current sensing input
Filament detection input
Window discriminator input
Half-bridge output sense
OUTPUT2
OUTPUT1
http://www.belling.com.cn
-3-
Total 8 Pages
8/28/2006










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Номер в каталогеОписаниеПроизводители
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