Datasheet

6
UC1872
UC2872
UC3872
APPLICATIONS INFORMATION
7
8
+
–
+
–
200µA
+
–
+
–
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. [phone] FAX [phone]
UDG-99005