MAX15007 Maxim Integrated Products, MAX15007 Datasheet - Page 11

• Manufacturer Part Number: MAX15007
• Description: (MAX15006 / MAX15007) ultra-low quiescent-current linear regulators
• Manufacturer: Maxim Integrated Products

Then determine the maximum output current:
Example 3 (TDFN Package):
T
V
V
Calculate the maximum allowable package dissipation
at the given temperature as follows:
Find the maximum output current:
In Examples 2 and 3, the maximum output current is
calculated as 172mA and 476mA, respectively; howev-
er, the allowable output current cannot exceed 50mA.
Figure 5a. Calculated Maximum Output Current vs. Input
Voltage (6-Pin TDFN-EP)
I
I
A
IN
OUT
OUT(MAX)
OUT(MAX)
= +50°C
= 9V
= 5V
60
55
50
45
40
35
30
25
20
15
10
=
=
5
0
1.9048W
0
1.5478W
14V 5V
9V 5V
V
6-PIN TDFN
OUT
Linear Regulators in 6-Pin TDFN/8-Pin SO
−
5
−
______________________________________________________________________________________
= 5V
P
T
10
A
D
= +125°C
=
=
= 1.9048W
15
172mA
476mA
V
IN
20
(V)
25
T
A
⇒
⇒
= +70°C
40V, Ultra-Low Quiescent-Current
30
T
I
I
A
OUT MAX
OUT MAX
= +85°C
35
(
(
40
)
)
=
=
50
50
mA
mA
Alternately, use Figures 5a and 5b to quickly determine
the maximum allowable output current for selected
ambient temperatures and input voltages.
For stable operation over the full temperature range
and with load currents up to 50mA, use a low-ESR
2.2µF (min) ceramic or tantalum output capacitor. Use
larger output-capacitor values such as 22µF to reduce
noise, improve load-transient response, and power-
supply rejection.
Some ceramic dielectrics exhibit large capacitance
and ESR variations with temperature. Ensure the mini-
mum capacitance under worst-case conditions does
not drop below 1.3µF to ensure output stability. With an
X7R dielectric, 2.2µF should be sufficient at all operat-
ing temperatures.
Figure 5b. Calculated Maximum Output Current vs. Input
Voltage (8-Pin SO-EP)
60
55
50
45
40
35
30
25
20
15
10
5
0
0
V
8-PIN SO-EP
OUT
5
= 5V
T
Output-Capacitor Selection
10
A
= +125°C
15
and Regulator Stability
V
IN
20
(V)
25
T
A
= +70°C
30
T
A
= +85°C
35
40
11