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LM2445-LM2445TA
Monolithic Triple 7.5 ns CRT Driver
LM2445
Monolithic Triple 7.5 ns CRT Driver
General DescriptionThe LM2445isan integrated high voltage CRT driver circuit
designedfor usein color monitor applications. TheIC con-
tains three high input impedance, wide band amplifiers
which directly drive the RGB cathodesofa CRT. Each
channel hasits gain internallysetto −20 and can drive CRT
capacitive loadsas wellas resistive loads presentin other
applications, limited onlybythe package’s power dissipation.
TheICis packagedinan industry standard 9-lead TO-220
molded plastic power package. See the Thermal Consider-
ations sectionfor more information.
Features Higher gainto match LM126X CMOS preamplifiers0Vto 3.75V input range Stable with 0–20pF capacitive loads and inductive
peaking networks Convenient TO-220 staggered lead package style Maintains standard LM243X Family pinout whichis
designedfor easy PCB layout
Applications 1024x 768 displaysupto85Hz refresh Pixel clock frequenciesupto95 MHz Monitors using video blanking
Schematic DiagramFIGURE1. Simplified Schematic Diagram
(One Channel)
March 2003
LM2445
Monolithic
riple
CRT
Driver
