參數(shù)資料
型號(hào): BUF11702PWP
文件頁(yè)數(shù): 24/28頁(yè)
文件大?。?/td> 501K
代理商: BUF11702PWP
BUF11702
10+1-CHANNEL LCD GAMMA CORRECTION BUFFER
SLOS359B
MARCH 2001
REVISED OCTOBER 2001
24
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
general PowerPAD design considerations (continued)
For a given
θ
JA
, the maximum power dissipation is shown in Figure 53 and is calculated by the following formula:
PD
TMAX
TA
JA
Where:
P
D
T
MAX
= Absolute maximum junction temperature (150
°
C)
T
A
= Free-ambient air temperature (
°
C)
θ
JA
=
θ
JC
+
θ
CA
θ
JC
= Thermal coefficient from junction to case (0.72
°
C/W)
θ
CA
= Thermal coefficient from case to ambient air (
°
C/W)
= Maximum power dissipation of BUF11702 IC (watts)
MAXIMUM POWER DISSIPATION
vs
FREE-AIR TEMPERATURE
7
6
5
4
3
2
40
20
TA
Free-Air Temperature
°
C
0
20
40
60
W
M
1
80
100
8
TJ = 150
°
C
0
θ
JA = 27.9
°
C/W
2 oz. Trace and Copper
Pad With Solder
Figure 53. Maximum Power Dissipation vs Free-Air Temperature
This lower thermal resistance enables the BUF11702 to deliver maximum output currents even at high ambient
temperatures.
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