BUF08800 Datasheet, PDF (16/23 Pages) Burr-Brown (TI) – Programmable Reference Generator and 400mA VCOM Driver

BUF08800
SBOS380A − FEBRUARY 2007 − REVISED MAY 2007
DIE
Side View (a)
DIE
End View (b)
www.ti.com
Exposed
Thermal
Pad
Bottom View (c)
Figure 19. Views of Thermally-Enhanced DCP Package
For a given q_JA, the maximum power dissipation is shown
in Figure 20, and is calculated by Equation 3:
ǒ Ǔ P_D +
T_MAX * T_A
q_JA
(2)
Where:
P_D = maximum power dissipation (W)
T_MAX = absolute maximum junction temperature (+125°C)
T_A = 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 20. Maximum Power Dissipation vs
Free-Air Temperature
(with PowerPAD soldered down)
16