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PDF KA7543D Data sheet ( Hoja de datos )
| Número de pieza | KA7543D | |
| Descripción | Advanced Feedback Dimming Ballast Control IC | |
| Fabricantes | Fairchild | |
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www.fairchildsemi.com
KA7543
Advanced Feedback Dimming Ballast Control IC
Features
• Lamp Current Feedback
• Soft Start on Feedback
• Voltage Dimming (0V~2V) on Feedback
• Switch off Control (Vdm=5V)
• Soft Dimming Control
• No Lamp Protection
• One Lamp Detection for Feedback
• Abnormal Protection
• Low Start-up and Operating Supply Current
• UVLO with 1.8V Hysteresis
• Totem Pole Output
• Trimmed 1.5% Internal Bandgap Reference
• 14-DIP & 14-SOP
Applications
• Electronic Ballast
• Lighting Control System
• Half Bridge Drive Control System
Descriptions
The KA7543 is an advanced lamp current feedback dimming
control IC. This ballast control IC provides all of the
necessary features to implement wide range dimming
control, soft start and constant power consumption for
intelligent electronic ballast systems. The KA7543 is
optimized for advanced electronic ballast systems requiring
minimum board area. External component counts can be
reduced by adopting the KA7543. Current feedback control
method of the inverter status is one of the most attractive
merits in KA7543. Internal soft start circuitry eliminates the
need for external soft start discrete components. Voltage
controlled soft dimming circuit is built into the IC to control
the lighting output in a wide range. Protection circuitry, no
lamp protection, abnormal protection, one lamp detection,
UVLO, restart on lamp adding , have been added.
14-DIP
1
14-SOP
1
©2002 Fairchild Semiconductor Corporation
Rev. 1.0.3
1 page  
Electrical Characteristics (Continue)
Unless otherwise specified, Vcc=12V, Ta=25°C.
Parameter
Symbol
1 Lamp Feedback Voltage
Vfb1
2 Lamp Feedback Voltage
Vfb2
Output Voltage High
Vea(h)
Output Voltage Low
Vea(l)
OSCILLATOR SECTION(NOTE1)
Reference Frequency
fref
Reference Dead Time
td
Soft Start Frequency
fss
Soft Start Time Current
Iss
VOLTAGE INPUT DIMMING SECTION(NOTE1)
Dimming Voltage Range
∆Vdm
Dimming Start Voltage
Vdm
Initial Dimming Output Voltage
Vdm
OUTPUT 1/2 SECTION
Rising Time (Note2)
tr
Falling Time(Note2)
tf
Output Voltage With UVLO Activated Vomin(o)
PROTECTION SECTION
Lamp Detection Voltage
Vld
Abnormal Detection Voltage
Vab
Switch Off Detection Voltage
Vso
No Lamp Detect Voltage
Vnd
PROTECTION RESET SECTION
Protection Reset Voltage
Vpr
Conditions
Vld = 2V
Vld = 4V
Vfb = 0V
Vfb = 2V
VC = 3.0V
VC = 3.0V
VC = 0V
VC = 0V
Vdm = 0V
Vdm = 0V
-
Vcc =12V,CI =1nF
Vcc =12V,CI =1nF
VCC = 5V, IO =100µA
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Notes :
1. This parameter should be tested in Vcc = 11V, 14V, 30V.
2. This parameter, although guaranteed, is not tested in production.
KA7543
Min. Typ. Max. Unit
0.425 0.5 0.575 V
0.85 1 1.15 V
5.5 5.7 5.9 V
- - 0.4 V
37 45 53 kHz
1.2 1.4 1.6 µs
77 -
- kHz
9.2 11 12.8 µA
0 - 2V
3.85 4 4.15 V
-0.1 0 0.1 V
- 200 280 ns
- 50 90 ns
- - 0.9 V
2.5 3 3.5 V
1.6 2 2.4 V
4.7 5 5.3 V
0.85 1 1.15 V
- 0.7 -
V
5
5 Page 
Components List (32W*2Lamp Application)
Part Number
R1
R2
R3, 21
R4, 11
R5
R6
R7
R8
R9
R10
R12, 13
R14
R15, 16
R17, 18
R19
C1, 2
C3, 4
C5
C6, 24
C7
C8, 11
C9
C10
C12, 21
C13
C14
C15,16
C17, 18, 19, 20
C22, 23
Q1, 2, 3
D1, 2, 3, 4
D5
D6, 7
D8
ZD1
L1
L2, 3
T1
T2
F1
TNR
NTC
Value
1.8MΩ
25kΩ
150kΩ
22kΩ
10Ω
0.68Ω
1.0MΩ
6kΩ
103
6.8Ω
47Ω
180kΩ
330kΩ
680kΩ
8.2kΩ
150nF, 275Vac
2200pF, 3000V
0.33µF, 630V
47µF, 35V
1µF
1nF, 25V
47µF, 450V
0.22µF, 25V
0.1µF, 25V
10nF, 25V
1nF, 630V
4700pF, 1000V
6800pF, 630V
22µF, 35V
500V, 4.5A
1000V, 1A
600V, 1A
600V, 1A
75V, 150mA
15V, 1W
45mH
3.1mH(120T)
0.9mH(80T:6T)
1.2mH(30T:60T)
250V, 3A
470V
10Ω
Note
1/4W
1/4W
1W
1/4W
1/4W
1W
1/4W
1/4W
Variable resistor
1W
1W
1/4W
1/4W
1/4W
1/4W
Box-Cap
Y-Cap
Miller-Cap
Electorlytic
MLCC
Ceramic
Electorlytic
Ceramic
Ceramic
Ceramic
Miller-Cap
Miller-Cap
Miller-Cap
Electorlytic
IRFS830B
1N4007
BYV26C
1N4937
1N4148
1N4744
Line Filter
EI2820
EI2820
EE1614
Fuse
471
10D09
KA7543
Manufacturer
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Fairchild
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11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet KA7543D.PDF ] | |
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