LM2432 220V Monolithic Single Channel 37 MHz HDTV CRT Driver
April 2005
LM2432
220V Monolithic Single Channel 37 MHz HDTV CRT
Driver
General Description
The LM2432 is a single channel high voltage CRT driver
circuit designed for use in Rear-Projection and Direct-View
HDTV 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
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37 MHz bandwith at 110V
PP
output swing
0V to 4V input range
Greater than 130V
PP
output swing capability
IK Current Output (Pin 5) for IK feedback systems
Stable with 0鈥?0 pF capacitive loads and inductive
peaking networks
Applications
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For Rear-Projection and Direct-View DC coupled CRT
applications using up to 720p and 1080i HDTV formats
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Compatible with RGB video processors with IK feedback
for automatic cathode calibration
Pinout Diagram
Schematic Diagram
20137702
Note:
Tab is at GND. Pin 6 is not connected (N/C) internally.
Top View
Order Number LM2432TE
FIGURE 1. Simplified Connection and Pinout Diagram
FIGURE 2. Simplified Schematic Diagram
20137701
漏 2005 National Semiconductor Corporation
DS201377
www.national.com