CVA2403 Ver la hoja de datos (PDF) - Calogic, LLC
Número de pieza
componentes Descripción
Fabricante
CVA2403 Datasheet PDF : 5 Pages
| |||
CORPORATION
CVA2403T
FIGURE 2. APPLICATION CIRCUIT
VBIAS
C1
VCC 9
C3
C4
R3
7
D1
L
C2
CVA2403T
VOUT
8,10,11
VIN
R4
C5
R5
VIDEO 1,3,5
INPUT
VPG
2,4,6
D2
DC BIAS
R2
GND
C7
R1 TAB
SPARK
GAP
R1 = 62Ω
R2 = 20Ω
R3 = 47Ω
R4 = 47(1/2W)Ω
R7 = 33Ω
R8 = 39Ω
R10 = 680Ω
C1 = 0.01µF
C2 = 100µF
C3 = 0.1µF
C4 = 100µF
C5 = 2.2µF
C7 = 40 - 120pf
D1, D2 = FHD400
L = 330 - 390nH
1P-40
APPLICATION INFORMATION
The CVA2403T is a high voltage triple CRT driver suitable for
VGA, Super VGA, IBM® 8514, 1280 x 1024 and 1024 x 768
non-interlaced display applications. The CVA2403T features
80V operation. The part is housed in the industry standard 11
lead TO-220 molded power package. The heat sink is floating
and may be grounded for ease of manufacturing and RFI
shielding.
Thermal Considerations
The transfer characteristics of the amplifier are shown in
Figure 4. Since this is a class A input stage, power supply
current increases as the input signal increases and
consequently power dissipation also increases.
The CVA2403T cannot be used without heat sinking. Figure 2
shows the power dissipated in each channel over the
operating voltage range of the device. Under white screen
conditions, i.e.: 20V output, dissipation increases to 16W
total. The CVA2403T case temperature must be maintained
below +90oC. If the maximum expected ambient temperature
is +50oC, then a heat sink is needed with thermal resistance
equal to or less than:
Rth
=
(90 − 50oC)
16W
=
2.5oC/W
The CVA2403T maximum load is 600Ω to ground or V+.
The output of CVA2403T is not short circuit proof. Any resistance
to V+ or Ground should be > 600Ω.
FIGURE 3. CVA2403T DC Characteristics
6
110
100
5
90
80
4
70
VOLTAGE POWER
60
3
50
40
2
30
20
1
10
01234567
INPUT VOLTAGE
1G-26
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
Share Link: 