MP1048 – FULL BRIDGE CCFL CONTROLLER
ELECTRICAL CHARACTERISTICS (continued)
VPRR = VPRL = 17.5V, VBRC = VLCC = GND, TA = +25°C, unless otherwise noted.
Parameter
Symbol Condition
Min
Typ
Max
Units
Supply Current
Supply Current (Enabled)
Supply Current (Disabled)
Operating Frequency
Accuracy of f0
IPR
IPR
2.2
3
3
25
53
8
mA
µA
KHz
%
f0
R3 = 100kΩ
45
49
3
Frequency Set Voltage
Lamp Current Feedback
VLCS
1.13
1.18
1.23
V
VABRT > 1.2V
VABRT = 0V
1.134
0.35
1.20
0.40
3
1.266
0.45
Magnitude
|VLI|
V
Accuracy
VLI
RLI
%
Input Resistance
VLI < 0V
60
kΩ
Open Lamp Voltage Feedback
Threshold (Peak)
VTH(LV)
VTH(SI)
1.15
1.15
1.20
1.20
1.25
1.25
V
V
Secondary Peak Current
Threshold
Fault Timer
Threshold
Vt(FT)
ISINK(FT)
ISO(FT)+
1.15
1.20
–1
1
1.25
V
Sink Current
µA
µA
Open Lamp Source Current
Secondary Over-Current Source
Current
ISP(FT)+
65
µA
Comp
Clamp Voltage
Reference Current
Decay Current
Output (VCCR and VCCL)
Voltage
VCOMP
ICOMP+
ICOMP-
0.62
20
V
µA
µA
End of Burst
20
VCC
ICC
5.7
6.0
5
6.3
V
Current
mA
MP1048 Rev. 0.9
9/24/2007
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3
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