amc7584 ETC-unknow, amc7584 Datasheet - Page 5

• Manufacturer Part Number: amc7584
• Description: 7a Low Dropout Regulator
• Manufacturer: ETC-unknow

AMC DOC. #: AMC7584_E (LF)
Feb 2005
APPLICATION INFORMATION:
Maximum Power Calculation:
Thermal consideration:
When power consumption is over about 1.2W( at 70
junction temperature below 125
The junction temperature is: Tj = P
If PC Board copper is going to be used as a heat sink, below table can be used to determine the appropriate size of
copper foil required. For multi-layered PCB, these layers can also be used as a heat sink. They can be connected with
several through hole vias.
PCB heat sink size (mm
Recommended figure of PCB area used as a heat sink.
Copyright ” 2002, ADD Microtech Corp.
T
The maximum power dissipation of a single-output regulator :
P
PCB T
Thermal Consideration
JA
D(MAX)
T
P
T
T
P
(
JT
O
CS
SA
T
D
D(MAX)
T
C/W): Junction-to-junction temperature thermal resistance of the package, and other heat dissipating
: D issipated power.
A
: T hermal resistance from the junction to the mounting tab of the package.
:  T hermal resistance through the interface between the IC and the surface on which it is mounted. (typically,
: T hermal resistance from the mounting surface to ambient (thermal resistance of the heat sink).
J
(
(
SA
O
O
Where: V
= >(V
C): Maximum recommended junction temperature
C): Ambient temperature of the application
(°C / W )
=
Then T
T
materials.
CS
T
IN(MAX)
(Top View)
J(MAX)
< 1.0°C / W)
I
I
V
OUT(NOM)
Q
JA
OUT(NOM)
IN(MAX)
= the quiescent current the regulator consumes at I
= (150
T
- V
– T
2
JA
) 500
59
OUT(NOM)
A(MAX)
= the maximum input voltage
= the nominal output current, and
O
O
= the nominal output voltage
C – T
C.
)@ u I
D
A
(T
) / P
45
1000
JT
OUT(NOM)
+ T
D
CS
+ T
o
C ambient temperature), additional heat sink is required to control the
+ V
(Bottom View)
SA
38
1500
IN(MAX)
) + T
5
A
u I
Q
33
2000
7A L
through hole vias
OUT(MAX)
OW
27
3000
D
ROPOUT
24
4000
AMC7584
R
EGULATOR
www.addmtek.com
21
5000