BUF20820 Datasheet, PDF (25/32 Pages) Burr-Brown (TI) – 18-Channel GAMMA VOLTAGE GENERATOR with Two Programmable VCOM Channels

www.ti.com
BUF20820
SBOS330C − DECEMBER 2005 − REVISED OCTOBER 2006
DIE
Side View (a)
DIE
End View (b)
Thermal
Pad
Bottom View (c)
The thermal pad is electrically isolated from all terminals in the package.
Figure 22. Views of Thermally-Enhanced DCP Package
For a given q_JA, the maximum power dissipation is shown
in Figure 23, 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 23. Maximum Power Dissipation vs
Free-Air Temperature
(with PowerPAD soldered down)
25