NL6448BC26-01 데이터 시트보기 (PDF) - NEC => Renesas Technology

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NL6448BC26-01

DOD-PD-0734 (2nd edition)

NEC => Renesas Technology 

65PWB31

2.3 ELECTRICAL CHARACTERISTICS

Parameter

Symbol min. typ. max. Unit

(Ta=25°C)

Remarks

Power supply voltage

VDDB 4.75

Power supply current

IDDB

-

Open lamp voltage VO 900

Output voltage

Lamp voltage

(at steady state)

VBLH -

Output current

Lamp current

(per lamp)

IBL

-

5.0 5.25

V

900 1,000 mA

-

-

Vrms

375

-

Vrms

5.0

- mArms

Note1, Note2

VDDB = 5.0V Note2

(at the maximum

luminance control)

Ta = - 10 to + 65°C

-

-

Oscillation frequency

FO

51

55

59

kHz

-

Luminance control frequency

FB

250 270 290

Hz

Note1: When designing of the power supply, take the measures for the prevention of surge voltage.

Note2: The power supply lines (VDDB and GNDB) occurs large ripple voltage while luminance control

of LCD lamps. There is the possibility that the ripple voltage produces acoustic noise and signal

wave noise in audio circuit and so on. Put a capacitor (5,000 to 6,000µF) between the power

source lines (VDDB and GNDB) to reduce the noise, if the noise occurred in the circuit.

2.4 FUSE

Parameter

Type

Fuse

Supplier

Rating

Fusing current

Remarks

VDDB

2.0A

11CT2A

SOC Corporation

72V

4.0A

Note1

Note1: The power supply capacity should be more than the fusing current. If the power capacity is less

than the fusing current, the fuse may not blow for a short time, and then nasty smell, smoking and

so on may occur.

DATA SHEET DOD-PD-0734 (2nd edition)

5

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