LM2429

Monolithic Triple Channel 15 MHz DTV Driver

General Description

The LM2429 is an integrated 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 −51 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 designed specifically to meet

high voltage spacing requirements. See Thermal Consider-

ations section.

Features

n

0V to 5V input range

n

Greater than 130V

n

Stable with 0–20 pF capacitive loads and inductive

peaking networks

n

Convenient TO-220 staggered thin lead package style

Applications

n

AC coupled DTV applications using the 480p format as

well as standard NTSC and PAL formats.

Connection Diagram

Schematic Diagram

20073102

Note: Tab is at GND

Top View

Order Number LM2429

FIGURE 1. Simplified Connection and Pinout Diagram

20073101

FIGURE 2. Simplified Schematic Diagram

(One Channel)

October 2004

© 2004 National Semiconductor Corporation

DS200731

www.national.com