MP1048 – FULL BRIDGE CCFL CONTROLLER

MP1048 Rev. 0.9

www.MonolithicPower.com

3

9/24/2007

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© 2007 MPS. All Rights Reserved.

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)

IPR

2.2

3

mA

Supply Current (Disabled)

IPR

3

25

µA

Operating Frequency

f0

R3 = 100kΩ

45

49

53

KHz

Accuracy of f0

3

8

%

Frequency Set Voltage

VLCS

1.13

1.18

1.23

V

Lamp Current Feedback

VABRT > 1.2V

1.134

1.20

1.266

Magnitude

|VLI|

VABRT = 0V

0.35

0.40

0.45

V

Accuracy

VLI

3

%

Input Resistance

RLI

VLI < 0V

60

kΩ

Open Lamp Voltage Feedback

Threshold (Peak)

VTH(LV)

1.15

1.20

1.25

V

Secondary Peak Current

Threshold

VTH(SI)

1.15

1.20

1.25

V

Fault Timer

Threshold

Vt(FT)

1.15

1.20

1.25

V

Sink Current

ISINK(FT)

–1

µA

Open Lamp Source Current

ISO(FT)+

1

µA

Secondary Over-Current Source

Current

ISP(FT)+

65

µA

Comp

Clamp Voltage

VCOMP

0.62

V

Reference Current

ICOMP+

20

µA

Decay Current

ICOMP-

End of Burst

20

µA

Output (VCCR and VCCL)

Voltage

VCC

5.7

6.0

6.3

V

Current

ICC

5

mA