BELLING BL8303 Bl8303 is a special control ic for electronic starter. Datasheet

BL8303 Electronic Starter
BL8303 A Special Control IC for Electronic Starter
Features
Function of preheat and ignition
Programmable Preheat time and
ignition times
Comprehensive fault protection
Low power start
ESD Protection
Description
1. BL8303 is a special control IC for Electronic Starter. This integrated
circuit performs the function of preheat and ignition do with the
controlling of both way switch.
2. During the moment of preheating, BL8303 can insure the
re-preheat of different type’s lamp by using the PIN7 and
PIN8 to setting the preheat time. So that the IC prolongs
the lamp life effectively.
3. The IC can re-ignition 4 times or 8 times by setting the
PIN6, thereby protects the lamp.
Typical Application
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8/8/2006
BL8303 Electronic Starter
Block Diagram
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BL8303 Electronic Starter
Lead Assignments & Definition
PIN
Symbol
Description
1
VCC
Power supply
2
SD
Lamp state inspect input
3
SC
State controlling input
4
IG
Ignition controlling input
5
GND
6
IS
Ignition times setting input
7
PS2
Preheat time setting input
8
PS1
Preheat time setting input2
Power ground
8 LEAD SOP or DIP
Electronic Characteristic
TA=25°C ,VCC=5V
Symbol
Istart
IQ_vcc
Parameter Definition
Test condition
Start-up current
Quiescent power drain
Min
Typ
Max
Unit
Vcc=2.7V
10
uA
Vcc=5V,SD=100Hz
25
uA
current
Input 1mA to the SC and
0.5
V
of
testing the voltage after
10
uA
0.5
V
10
uA
current
VSC_L
Draw
in
capacity
VSC_H
SC
output low
2.5 second
Leakage current of SC
Input 5V on the SC and
output High
testing
the
leakage
current during the 2.5s
(according to Fig.1)
VIG_L
VIG_H
Draw
in
current
Input 10mA current to
capacity of IG output
the IG and testing the
low
voltage after 2.5 second
Leakage current of IG
Input 5V on the IG and
output High
testing
the
leakage
current during the 2.5s
(according to Fig.1)
TIG
Tpre_1
Tpre_1.5
Tpre_2
Tpre_2.5
Ignition times
Fig. 1,K1、K2 ON
1
s
Preheat time of 1s
K1、K2 ON、K3=K4=2
1
s
Preheat time of 1.5s
K1、K2 ON、K4=2
1.5
s
Preheat time of 2s
K1、K2 ON、K3=2
2
s
Preheat time of 2.5s
Fig.2,K1、K2 ON
2.5
s
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BL8303 Electronic Starter
Normal Ignition
SD 100Hz Vp=5V, 90% duty cycle , preheat time 2.5s
...
SD
SC
IG
Ignition Successful
2.5s
Output Low
2.5s
Tpre
Output Low
Fig. 1
Failure mode Re-ignition
SD 100Hz Vp=5V, 90% duty cycle , preheat time 2.5s
...
SD
SC
2.5s
IG
2.5s
Tpre
...
1s
...
Tig
1s
...
X
Output Low
Ignite for 8 times
Fig. 2
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