LM2462

Monolithic Triple 3 ns CRT Driver

General Description

The LM2462 is an integrated high voltage CRT driver circuit

designed for use in color monitor applications. The IC con-

tains three high input impedance, wide band amplifiers

which directly drive the RGB cathodes of a CRT. Each

channel has its gain internally set to −20 and can drive CRT

capacitive loads as well as resistive loads present in other

applications, limited only by the package’s power dissipation.

The IC is packaged in an industry standard 11-lead TO-220

molded plastic power package. See Thermal Considerations

section.

Features

n

Higher gain to match LM126X CMOS preamplifiers

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0V to 3.75V input range

n

Stable with 0–20 pF capacitive loads and inductive

peaking networks

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Convenient TO-220 staggered lead package style

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Maintains standard LM240X Family pinout which is

designed for easy PCB layout

Applications

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1600 x 1200 displays up to 85Hz refresh

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Pixel clock frequencies up to 230 MHz

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Monitors using video blanking

Schematic and Connection Diagrams

DS200376-1

FIGURE 1. Simplified Schematic Diagram

(One Channel)

DS200376-2

Note: TabisatGND

Top View

Order Number LM2462TA

NS Package Number: TA11B

February 2002

© 2002 National Semiconductor Corporation

DS200376

www.national.com