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PDF LM2459 Data sheet ( Hoja de datos )
| Número de pieza | LM2459 | |
| Descripción | Monolithic Single Channel 15 MHz DTV CRT Driver | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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May 2004
LM2459
Monolithic Single Channel 15 MHz DTV CRT Driver
General Description
The LM2459 is a single channel high voltage CRT driver
circuit designed for use in DTV applications. The IC contains
a high input impedance, wide band amplifier which directly
drives the cathode of a CRT. The amplifier 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 a staggered 7-lead TO-220 molded
plastic power package designed specifically to meet high
voltage spacing requirements. See Thermal Considerations
section.
Features
n 15MHz bandwith at 130VPP output swing
n 0V to 4V input range
n Greater than 130VPP output swing capability
n Stable with 0–20 pF capacitive loads and inductive
peaking networks
n Transient response improvement option via pin 6 (EM)
Applications
n AC coupled DTV applications using the 480p format as
well as standard NTSC and PAL formats.
Connection Diagram
Schematic Diagram
Note: Tab is at GND
Top View
Order Number LM2459TE
20067802
FIGURE 1. Simplified Connection and Pinout Diagram
20067801
FIGURE 2. Simplified Schematic Diagram
© 2004 National Semiconductor Corporation DS200678
www.national.com
1 page  
Typical Performance Characteristics (VCC = +180VDC, VBB = +8VDC, CL = 10pF, VOUT = 130VPP
(35V − 165V), Test Circuit - Figure 3, Pin 6 floating, unless otherwise specified) (Continued)
20067807
FIGURE 10. Power Dissipation vs Frequency
20067816
FIGURE 11. Power Derating Curve
20067819
FIGURE 12. Cathode Pulse Response
5
www.national.com
5 Page 
Physical Dimensions inches (millimeters)
unless otherwise noted
NS Package Number TE07A
Order Number LM2459TE
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and
whose failure to perform when properly used in
accordance with instructions for use provided in the
labeling, can be reasonably expected to result in a
significant injury to the user.
2. A critical component is any component of a life
support device or system whose failure to perform
can be reasonably expected to cause the failure of
the life support device or system, or to affect its
safety or effectiveness.
BANNED SUBSTANCE COMPLIANCE
National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products
Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification
(CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2.
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Support Center
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National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet LM2459.PDF ] | |
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