AMC DOC. #: AMC7585_E (LF)
Feb
2005
AMC7585
5A L
OW
D
ROPOUT
R
EGULATOR
ABSOLUTE MAXIMUM RATINGS
(Note)
7V
150
O
C
-65
O
C to 150
O
C
300
O
C
Input Voltage (V
IN
)
Operating Junction temperature
Storage Temperature Range
Lead temperature (Soldering, 10 seconds)
Note:
Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground.
Currents are positive into, negative out of the specified terminal.
POWER DISSIPATION TABLE
T
A
=70
O
C
Derating factor ( mW/
O
C )
T
A
≤
25
O
C
T
A
≥
25
O
C
Power rating(mW) Power rating(mW)
22.2
22.2
22.2
22.2
12.5
12.5
2775
2775
2775
2775
1562
1562
1776
1776
1776
1776
1000
1000
Package
T
TF
ST/ST3
ST/ST3F
SJ
SJF
θ
JA
O
( C /W )
45
45
45
45
80
80
T
A
= 85
O
C
Power rating (mW)
1443
1443
1443
1443
812
812
Note:
T
J
= T
A
+ (P
D
×
θ
JA
)
P
D
: Power dissipation.
θ
JA
: Thermal resistance from Junction to Ambient.
For T and ST/ST3 packages,
θ
JT
= 3.0
O
C / W.
For SJ package,
θ
JT
= 7.0
O
C /W.
T
J
= T
TAB
+ (P
D
× θ
JT
)
T
TAB
: Tab temperature.
θ
JT:
Thermal resistance from junction to tab of the package.
1.
2.
3.
The
θ
JA
numbers are guidelines for the thermal performance of the device/PC-board system.
All of the above assume no ambient airflow.
If power consumption is over above rating, adequate heat sink is required to dissipate heat.
RECOMMENDED OPERATING CONDITIONS
Parameter
Symbol Recommended Operating Conditions
Min.
Typ.
Max.
Input Voltage
Load Current (with adequate heatsinking)
Input Capacitor (V
IN
to GND)
Output Capacitor with ESR of 10Ω max., (V
OUT
to GND)
Operating Ambient Temperature Range
Operating junction temperature
T
J
V
IN
I
O
2.75
0.010
1
10
0
70
125
7
5
Units
V
A
µF
µF
O
C
O
C
Copyright
©
2002, ADD Microtech Corp.
3
www.addmtek.com
AMC DOC. #: AMC7585_E (LF)
Feb
2005
BLOCK DIAGRAM
AMC7585
5A L
OW
D
ROPOUT
R
EGULATOR
V
IN
V
OUT
THERMAL
LIMIT
1.25V
V
REF
GND
AMC7585-X.X circuit schematic
V
IN
1.25V
V
REF
THERMAL
LIMIT
V
OUT
ADJ
AMC7585-ADJ circuit schematic
Copyright
©
2002, ADD Microtech Corp.
4
www.addmtek.com
AMC DOC. #: AMC7585_E (LF)
Feb
2005
AMC7585
5A L
OW
D
ROPOUT
R
EGULATOR
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, V
IN
= V
OUT
+ 2V, I
O
= 10mA. These specifications apply operating ambient temperature
range, and are for DC characteristics only. (Low duty cycle pulse testing techniques are used which maintains
junction and case temperatures equal to the ambient temperature.)
Parameter
AMC7585-2.5
Output Voltage AMC7585-3.3
AMC7585-5.0
AMC7585-2.5
Output Voltage AMC7585-3.3
AMC7585-5.0
Reference
Voltage
(Note 1)
AMC7585-ADJ V
REF
V
OI
V
OL
V
I
Q
I
ADJ
I
CL
Imin
R
R
(V
IN
- V
OUT
)=2V
V
RIPPLE
= 1V
PP
, I
O
= 100mA,
f
O
=120Hz
5.1
I
O
= 10mA to 5A, (Note 1)
(1.5V + V
OUT
)
≤
V
IN
≤
7V
I
O
= 10mA to 5A
(Note 3)
I
O
= 10mA
I
O
= 5A
V
OUT
I
O
= 10mA to 5A
V
OUT
Symbol
Test Conditions
T
A
= 25
O
C
T
A
= 25
O
C
T
A
= 25
O
C
AMC7585
Min. Typ. Max.
2.475
3.267
4.950
2.460
3.247
4.920
1.238
1.230
2.500
3.300
5.000
2.500
3.300
5.000
1.250
1.250
0.04
0.08
1.00
1.15
8
50
6.8
5
80
2.525
3.333
5.050
2.540
3.353
5.080
1.262
1.270
0.2
0.3
1.15
1.30
13
120
10
V
V
V
Units
Line Regulation (Note 2)
Load regulation (Note 2)
Dropout Voltage
Quiescent Current
( for AMC7585-X.X)
Adjust Pin Current
( for AMC7585-ADJ)
Current Limit
Minimum Load Current (Note 4)
Ripple Rejection (Note 5)
%
%
V
mA
µA
A
mA
dB
V
IN
≤
7V, I
O
= 10mA to 3A
60
Note 1 Output voltage is set to be 2.5V.
Note 2: Line and load regulations are guaranteed up to maximum power dissipation determined by input/output
differential and the output current. However, the maximum power will not be available over the full
input/output voltage range.
Note 3: The specifications represent the minimum input/output voltage required to maintain 1% regulation.
Note 4: The minimum load current is the minimum current required to maintain regulation. Normally the current in
the resistor divider used to set the output voltage is selected to meet the minimum load current requirement.
Note 5: These parameters, although guaranteed, are not tested in production prior to shipment
Copyright
©
2002, ADD Microtech Corp.
5
www.addmtek.com
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