el2386 Intersil Corporation, el2386 Datasheet - Page 11

• Manufacturer Part Number: el2386
• Description: 250mhz Triple Current Feedback Amplifier With Disable
• Manufacturer: Intersil Corporation

Power Dissipation
With the high output drive capability of the EL2386, it is
possible to exceed the 150°C Absolute Maximum junction
temperature under certain very high load current conditions.
Generally speaking, when R
important to calculate the maximum junction temperature
(T
voltages, load conditions, or package type need to be
modified for the EL2386 to remain in the safe operating area.
These parameters are calculated as follows:
T
where:
PD
PD
where:
JMAX
JMAX
T
θ
n = Number of amplifiers in the package
PD
the package
V
I
V
R
SMAX
MAX
MAX
JA
MAX
S
OUTMAX
L
MAX
= Load resistance
= Supply voltage
) for the application to determine if power-supply
= Thermal resistance of the package
=
for each amplifier can be calculated as follows:
=
= Maximum ambient temperature
= Maximum supply current of 1 amplifier
T
(
= Maximum power dissipation of each amplifier in
MAX
2
×
= Max. output voltage of the application
V
S
+
(
*I
θ
SMAX
JA
*n*PD
) +
FIGURE 2.
(
MAX
(
L
V
11
falls below about 25Ω, it is
S
)-V
)
OUTMAX
)* V
(
OUTMAX
⁄
R
L
)
EL2386