ML4833CS datasheet(10/13 Pages) MICRO-LINEAR

부품명	ML4833CS

상세설명	Electronic Dimming Ballast Controller

PDF	13 Pages

Scroll/Zoom	100%

제조업체	MICRO-LINEAR [Micro Linear Corporation]

홈페이지	http://www.microlinear.com

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10 / 13 page

ML4833

A summary of the operating frequencies in the various

operating modes is shown below.

Operating Mode

Operating Frequency

[F(MAX) to F(MIN)]

Preheat

Dimming

Lock-out

F(MIN)

Dimming

Control

F(MIN) to F(MAX)

6.8

–

1.2/4.8

HEAT

INHIBIT

0.625

RSET

–

1.2/6.8

–

1.25V

DIMMING

LOCKOUT

RX/CX

INTERRUPT

Figure 8. Lamp Preheat and Interrupt Timers

LFB OUT is ignored by the oscillator until CX reaches

6.8V threshold. The lamps are therefore driven to full

power and then dimmed. The CX pin is clamped to

about 7.5V.

6.8

4.8

1.2

.65

>1.25

RX/CX

HEAT

DIMMING

LOCKOUT

INT

INHIBIT

Figure 9. Lamp Starting and Restart Timing

TYPICAL APPLICATIONS

Figure 10 shows a schematic for a dimming power-factor

corrected 60W ballast, designed to operate two F32T8

fluorescent lamps connected in series.

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