AMC DOC. #: AMC7580_E (LF)
AMC7580
Feb 2005
7A LOW DROPOUT REGULATOR
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, these specifications apply TJ = 25°C for AMC7580; IO = 10mA, VOUT = VSENSE, 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.)
AMC7580
Parameter
Symbol
Test Conditions
Min.
Typ.
Max.
Units
AMC7580-2.5
VCONTROL = 5.0V, VPOWER = 3.3V
2.474
2.500
2.525
AMC7580-3.3
VCONTROL = 5.8V, VPOWER = 3.8V
3.267
3.300
3.333
Output Voltage
AMC7580-5.0
VOUT
VCONTROL = 7.5V, VPOWER = 5.5V
4.950
5.000
5.050
V
AMC7580-2.5
VCONTROL = 5.0V,
VPOWER = 3.3V
2.460
2.500
2.540
AMC7580-3.3
VCONTROL = 5.0V,
VPOWER = 4.1V
3.247
3.300
3.353
Output Voltage
AMC7580-5.0
VOUT
VCONTROL = 6.5V,
VPOWER = 5.8V
IO = 7A
4.920
5.000
5.080
V
VCONTROL
(Note 1)
= 5.0V, VPOWER = 3.3V,
1.238
1.250
1.262
Reference
Voltage
AMC7580-ADJ VREF
VCONTROL = (VOUT + 1.5V) to 12V,
VPOWER = (VOUT + 0.8V) to 7V,
IO = 10mA to 7A
1.230
1.250
1.270
V
Line Regulation (Note 2)
VOI
(1.5V + VOUT) ≤ VCONTROL ≤ 12V,
0.8V
≤ (VPOWER - VOUT ) ≤ 5.5V
0.04
0.2
%
Load regulation (Note 2)
VOL
VCONTROL = VOUT + 2.5V,
VPOWER = VOUT + 0.8V,
IO = 10mA to 7A
0.08
0.3
%
IO = 10mA
1.00
1.15
Dropout Voltage
VCONTROL - VOUT (Note 3)
V
VPOWER = VOUT + 0.8V
IO = 7A
1.15
1.30
V
IO = 10mA
0.10
0.17
Dropout Voltage
VPOWER- VOUT (Note 3)
V
VCONTROL = VOUT +
2.5V
IO = 7A
0.45
0.50
V
Adjust Pin Current
IADJ
VCONTROL = 2.75V,
VPOWER = 2.05V, IO = 10mA
50
120
µA
Control Pin Current
ICTNL
VCONTROL = VOUT + 2.5V,
VPOWER = VOUT + 0.8V,
IO = 10mA to 7A
80
135
mA
Current Limit
ICL
(VIN - VOUT)=1.5V
7
8
A
Minimum Load Current (Note 4)
Imin VCONTROL = 5.0V, VPOWER = 3.3V
5
10
mA
Ripple Rejection (Note 5)
RR
VCONTROL = VPOWER = VOUT + 2.5V,
VRIPPLE = 1VPP, IO = 2.5A
60
80
dB
Thermal Regulation
TA = 25°C
0.003
% / W
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 dropout voltage is measured by either minimum control voltage or power voltage. 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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