ISL28278, ISL28478
where:
• P
is the sum of the maximum power
MAX
DMAXTOTAL
dissipation of each amplifier in the package (PD
)
• PD
for each amplifier is calculated in Equation 2:
MAX
V
OUTMAX
R
L
----------------------------
PD
= 2*V × I
+ (V - V ) ×
OUTMAX
MAX
S
SMAX
S
(EQ. 2)
where:
• T
= Maximum ambient temperature
MAX
• θ = Thermal resistance of the package
JA
• PD
= Maximum power dissipation of 1 amplifier
MAX
• V = Supply voltage (Magnitude of V and V )
S
+
-
• I
= Maximum supply current of 1 amplifier
MAX
• V
OUTMAX
= Maximum output voltage swing of the
application
• R = Load resistance
L
FN6145.2
July 11, 2007
12