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LM2433 220V Monolithic Single Channel 16 MHz EDTV CRT Driver

November 2005

LM2433

220V Monolithic Single Channel 16 MHz EDTV CRT

Driver

General Description

The LM2433 is a single channel high voltage CRT driver

circuit designed for use in Rear-Projection and Direct-View

EDTV applications. The IC contains a high input impedance,

wide band amplifier which can be DC coupled to a cathode

of a CRT. The amplifier 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 a staggered 7-lead TO-220 molded

plastic power package designed specifically to meet high

voltage spacing requirements. See the section 鈥淧ower Dis-

sipation and Heatsink Calculation鈥?for more information.

Features

n

n

n

n

n

16 MHz bandwith at 110V

PP

output swing

0V to 4V input range

Greater than 110V

PP

output swing capability

IK Current Output (pin 5) for IK feedback systems

Emitter (pin 6) access to increase voltage gain

Applications

n

For Rear-Projection and Direct-View DC coupled CRT

applications using EDTV formats

n

Compatible with RGB video processors with IK feedback

for automatic cathode calibration

Pinout Diagram

Schematic Diagram

20146202

Note:

Tab is at GND.

Top View

Order Number LM2433TE

FIGURE 1. Simplified Connection and Pinout Diagram

FIGURE 2. Simplified Schematic Diagram

20146201

漏 2005 National Semiconductor Corporation

DS201462

www.national.com

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