KA7543 Datasheet, PDF (5/16 Pages) Fairchild Semiconductor – Advanced Feedback Dimming Ballast Control IC

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
-
-
-
-
-
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