UC3872MTR datasheet(6/11 Pages) TI1

Part #	UC3872MTR

Description	Resonant Lamp Ballast Controller

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Manufacturer	TI1 [Texas Instruments]

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6 / 11 page

6

UC1872

UC2872

UC3872

APPLICATIONS INFORMATION

7

8

+

–

+

–

200

µA

+

–

+

–

CT

0.1V

3.0V

MAX FREQ

COMPARATOR

0.5V

ZD

1.0V

ZERO DETECT

CLK

S

Q

R

4mA

DISCHARGE

COMPARATOR

MIN FREQ

COMPARATOR

Figure 2. UC3872 oscillator section.

Figure 3. UC3872 open lamp detect circuitry.

UNITRODE CORPORATION

7 CONTINENTAL BLVD. • MERRIMACK, NH 03054

TEL. (603) 424-2410 FAX (603) 424-3460

UDG-99005

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