BUF20800 Datasheet, PDF (22/27 Pages) Burr-Brown (TI) – 18-Channel GAMMA VOLTAGE GENERATOR with Two Programmable VCOM Channels

BUF20800
SBOS329D − JUNE 2005 − REVISED OCTOBER 2006
DIE
Side View (a)
DIE
End View (b)
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Thermal
Pad
Bottom View (c)
The thermal pad is electrically isolated from all terminals in the package.
Figure 20. Views of Thermally-Enhanced DCP Package
For a given q_JA, the maximum power dissipation is shown
in Figure 21, and is calculated by Equation 3:
ǒ Ǔ P_D +
T_MAX * T_A
q_JA
(3)
Where:
P_D = maximum power dissipation (W)
T_MAX = absolute maximum junction temperature (125°C)
T_A = free-ambient air temperature (°C)
q_JA = q_JC + q_CA
q_JC = thermal coefficient from junction-to-case (°C/W)
q_CA = thermal coefficient from case-to-ambient air (°C/W)
6
5
4
3
2
1
0
−40 −20
0
20
40
60
80
100
T_A, Free−Air Temperature (_C)
Figure 21. Maximum Power Dissipation vs
Free-Air Temperature
(with PowerPAD soldered down)
22