LM2425 Datasheet

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LM2425 220V Monolithic Triple Channel 10 MHz CRT DTV Driver

November 2004

LM2425

220V Monolithic Triple Channel 10 MHz CRT DTV Driver

General Description

The LM2425 is a triple channel high voltage CRT driver

circuit designed for use in DTV applications. The IC contains

three high input impedance, wide band amplifiers which

directly drive the RGB cathodes of a CRT. Each channel has

its gain internally set to 鈭?3 and can drive CRT capacitive

loads as well as resistive loads present in other applications,

limited only by the package鈥檚 power dissipation.

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

molded plastic power package designed specifically to meet

high voltage spacing requirements. See Thermal Consider-

ations section.

Features

n

15 MHz bandwidth at 130V

PP

output swing

n

Up to 170V

PP

output swing with AC coupling to

cathodes

n

0V to 5V input voltage range

n

Stable with 0 pF鈥?0 pF capacitive loads and inductive

peaking networks

n

Convenient TO-220 staggered thin lead package style

Applications

n

AC or DC coupled DTV applications.

Connection Diagram

Schematic Diagram

20124101

FIGURE 1. Top View

Order Number LM2425TE

See NS Package Number TE11B NOPB

Available only with lead free plating

FIGURE 2. Simplified Schematic Diagram

(One Channel)

20124102

漏 2004 National Semiconductor Corporation

DS201241

www.national.com

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