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LM2432 Datasheet

220V Monolithic Single Channel 37 MHz HDTV CRT Driver

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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 −53 and
can drive CRT capacitive loads as well as resistive loads
present in other applications, limited only by the package’s
www.DataSphoeweetr4Udi.scsoipmation.
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 “Power Dis-
sipation and Heatsink Calculation” for more information.
Features
n 37 MHz bandwith at 110VPP output swing
n 0V to 4V input range
n Greater than 130VPP output swing capability
n IK Current Output (Pin 5) for IK feedback systems
n Stable with 0–20 pF capacitive loads and inductive
peaking networks
Applications
n For Rear-Projection and Direct-View DC coupled CRT
applications using up to 720p and 1080i HDTV formats
n 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
20137701
FIGURE 2. Simplified Schematic Diagram
© 2005 National Semiconductor Corporation DS201377
www.national.com


National Semiconductor Electronic Components Datasheet

LM2432 Datasheet

220V Monolithic Single Channel 37 MHz HDTV CRT Driver

No Preview Available !

Absolute Maximum Ratings (Notes 1,
3)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (VCC)
Bias Voltage (VBB)
Input Voltage (VIN)
IK Voltage (VIK)
Storage Temperature Range (TSTG)
Lead Temperature
(Soldering, <10 sec.)
ESD Tolerance,
Human Body Model
Machine Model
www.DataSheet4JUu.nccotimon Temperature
θJC (typ)
+250V
+16V
-0.5V to VBB+0.5V
-0.5V to +16V
-65˚C to +150˚C
300˚C
2 kV
200V
150˚C
4.5˚C/W
Operating Ranges (Note 2)
VCC +130V to +230V
VBB +7V to +13V
VIN 0V to +4.25V
VIK 0V to VBB+1V
VOUT
+40V to VCC–5V
Case Temperature See Figure 11. Derate power for
TC above 110˚C.
Do not operate the part without a heat sink.
Electrical Characteristics (See Figure 3 for Test Circuit)
Unless otherwise noted: VCC = +220V, VBB = +12V, CL = 10 pF, TC = 40˚C.
DC Tests: VIN = 2.75VDC
AC Tests: Output = 110VPP (80V - 190V) at 1 MHz
Symbol
Parameter
ICC
IBB
VOUT, 1
VOUT, 2
AV
LE
tR
+OS
tF
–OS
IKERROR
Supply Current
Bias Current
DC Output Voltage
DC Output Voltage
DC Voltage Gain
Linearity Error
Rise Time
Overshoot
Fall Time
Overshoot
IK Current Output Error
Conditions
No AC Input Signal, No Output Load
No AC Input Signal, VIN = 2.75VDC
No AC Input Signal, VIN = 1.25VDC
No AC Input Signal
(Note 4), No AC Input Signal
(Note 5), 10% to 90%
(Note 5)
(Note 5), 90% to 10%
(Note 5)
(Notes 6, 7)
LM2432
Min Typical Max
12 17
8 11
121 126 131
199 204 209
–50 –53 –56
5
10
21
8
8
–37 0 +37
Units
mA
mA
VDC
VDC
%
ns
%
ns
%
µA
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.
Note 2: Operating ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. For guaranteed specifications and
test conditions, see the Electrical Characteristics. Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis. The guaranteed
specifications apply only for the test conditions listed. Some performance characteristics may change when the device is not operated under the listed test
conditions.
Note 3: All voltages are measured with respect to GND, unless otherwise specified.
Note 4: Linearity Error is the variation in DC gain from VIN = 1.15V to VIN = 4.35V.
Note 5: Input from signal generator: tr, tf < 2 ns. Slower inputs to the LM2432 will change the transient response characteristics and reduce power dissipation.
Note 6: IKERROR = IK – IOUT, where IK is the IK current output from pin 5 (IK) and IOUT is the cathode current into pin 2 (VOUT). IK is calculated by measuring VIK
across a known resistor value between pin 5 and GND.
Note 7: Refer to the RGB Video Processor data sheet for IK leakage compensation, feedback operation, and adjustment range information.
www.national.com
2


Part Number LM2432
Description 220V Monolithic Single Channel 37 MHz HDTV CRT Driver
Maker National Semiconductor
Total Page 13 Pages
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