MAX4336 MAXIM [Maxim Integrated Products], MAX4336 Datasheet - Page 10

• Manufacturer Part Number: MAX4336
• Description: SC70/SOT23-8, 50mA IOUT, Rail-to-Rail I/O Op Amps with Shutdown/Mute
• Manufacturer: MAXIM [Maxim Integrated Products]

SC70/SOT23-8, 50mA I
Op Amps with Shutdown/Mute
Warning: Due to the high-output-current drive, this op
amp can exceed the absolute maximum power-dissi-
pation rating. As a general rule, as long as the peak cur-
rent is less than or equal to 50mA, the maximum package
power dissipation will not be exceeded for any of the
package types offered. There are some exceptions to this
rule, however. The absolute maximum power-dissipation
rating of each package should always be verified using
the following equations. The following equation gives an
approximation of the package power dissipation:
where: V
For example, the circuit in Figure 1 has a package
power dissipation of 220mW.
Therefore, P
Adding a coupling capacitor improves the package
power dissipation because there is no DC current to
the load, as shown in Figure 2.
10
______________________________________________________________________________________
I
V
RMS
V
I
RMS
RMS
RMS
I
RMS
RMS
IC(DISS)
P
IC DISS
I
DC
108
= the RMS voltage from V
= the RMS voltage from V
= the RMS current flowing out of or into
= the phase difference between the
I
5 5
5 5
22
Applications Information
DC
V
V
.
.
CC
CC
when sourcing current
when sinking current
the op amp and the load
voltage and the current. For resistive
loads, COS
mA
mA
V
+
V
+
Package Power Dissipation
= V
RMS
I
RMS
PEAK
I
PEAK
V
2 75
V
2 75
RMS
2
DC
DC
.
.
V
2
RMS RMS
V
V
I
RMS
= 1.
I
2 75
V
V
0
1
32
1
.
PEAK
PEAK
V
V
A
2
2
COS
2
2
V
COS
2 043
2 043
1
V
.
.
= 220mW
1
/
V
32
2
CC
OUT
/
V
V
32
RMS
2
RMS
to V
to V
OUT
OUT
EE
Therefore, P
The absolute maximum power-dissipation rating of the
package may be exceeded if the configuration in
Figure 1 is used with the MAX4335/MAX4336 amplifiers
at a high ambient temperature of 79°C (220.6mW/°C
plus a derating of 3.1mW/°C x 9°C = 247.9mW). Note
that the 247.9mW just exceeds the absolute maximum
power dissipation of 245mW for the 6-pin SC70 package.
Figure 1. A Circuit Example where the MAX4335/MAX4336 is
Dissipating High Power
Figure 2. A Circuit Example where Adding a Coupling
Capacitor Greatly Reduces the Power Dissipation of Its
Package
C
V
, Rail-to-Rail I/O
V
C
IN
IN
>
= 2V
= 2V
2 R
1
P-P
P-P
L
f
L
WHERE f
IC(DISS)
C
C
IN
L
IS THE LOW-FREQUENCY CUTOFF
= V
= 45mW
R
R
R
R
RMS
MAX4335
MAX4336
I
MAX4335
MAX4336
RMS
5.5V
5.5V
COS
C
C
32
32