AMS1503
ABSOLUTE MAXIMUM RATINGS (Note 1)
VPOWER Input Voltage
VCONTROL Input Voltage
6V
13V
Thermal Resistance
TO-220 package
TO-252 package
ϕ
JA= 50°C/W
JA= 92°C/W*
ϕ JA= 30°C/W**
Operating Junction Temperature
ϕ
Control Section
Power Transistor
Storage temperature
TO-263 package
0°C to 125°C
0°C to 150°C
- 65°C to +150°C
*Minimum pad size is 0.038in2
** With package soldering to 0.5in2 copper area over backside
ground plane or internal power plane ϕ JA can vary from 20°C/W to
>40°C/W depending on mounting technique.
Soldering information
Lead Temperature (25 sec)
265°C
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at ILOAD = 0 mA, and TJ = +25°C unless otherwise specified.
Parameter
Device
Conditions
Min
Typ
Max
Units
Reference Voltage
AMS1503
VCONTROL = 2.75V, VPOWER =2V, ILOAD = 10mA
1.243
1.250
1.257
V
VCONTROL = 2.7V to 12V, VPOWER =3.3V to 5.5V,
V
1.237
1.250
1.263
ILOAD = 10mA to 3A
Output Voltage
AMS1503-1.5
VCONTROL = 4V, VPOWER =2.V, ILOAD = 0mA
VCONTROL = 3V, VPOWER =2.3V, ILOAD = 0mA to 3A
1.491
1.485
1.500
1.500
1.509
1.515
V
V
AMS1503-2.5
AMS1503-2.85
AMS1503-3.0
AMS1503-3.3
AMS1503-3.5
AMS1503-5.0
VCONTROL = 5V, VPOWER =3.3V, ILOAD = 0mA
VCONTROL = 4V, VPOWER =3.3V, ILOAD = 0mA to 3A
2.485
2.475
2.500
2.500
2.515
2.525
V
V
VCONTROL = 5.35V, VPOWER =3.35V, ILOAD = 0mA
VCONTROL = 4.4V, VPOWER =3.7V, ILOAD = 0mA to 3A
2.821
2.833
2.850
2.850
2.879
2.867
V
V
V
CONTROL = 5.5V, VPOWER =3.5V, ILOAD = 0mA
2.982
2.970
3.000
3.000
3.018
3.030
V
V
VCONTROL = 4.5V, VPOWER =3.8V, ILOAD = 0mA to 3A
V
CONTROL = 5.8V, VPOWER =3.8V, ILOAD = 0mA
3.280
3.235
3.300
3.300
3.320
3.333
V
V
VCONTROL = 4.8V, VPOWER =4.1V, ILOAD = 0mA to 3A
V
CONTROL = 6V, VPOWER =4V, ILOAD = 0mA
3.479
3.430
3.500
3.500
3.521
3.535
V
V
VCONTROL = 5V, VPOWER =4.3V, ILOAD = 0mA to 3A
V
CONTROL = 7.5V, VPOWER =5.5V, ILOAD = 0mA
4.930
4.950
5.000
5.000
5.030
5.050
V
V
VCONTROL = 6.5V, VPOWER =5.8V, ILOAD = 0mA to 3A
ILOAD = 10 mA , 1.5V≤ (VCONTROL - VOUT) ≤ 12V
0.8V≤ (VPOWER - VOUT) ≤ 5.5V
Line Regulation
Load Regulation
AMS1503/-1.5/-2.5/
mV
1
3
-2.85/-3.0/-3.3/-3.5/-5.0
AMS1503/-1.5/-2.5/
-2.85/-3.0/-3.3/-3.5/-5.0
AMS1503
VCONTROL = VOUT + 2.5V, VPOWER =VOUT + 0.8V,
mA
1
5
ILOAD = 10mA to 3A
Minimum Load
Current
VCONTROL = 5V, VPOWER =3.3V, VADJ = 0V (Note 3)
mA
mA
5
10
Control Pin Current
(Note 4)
AMS1503/-1.5/-2.5/
VCONTROL = VOUT + 2.5V, VPOWER =VOUT + 0.8V,
6
60
120
ILOAD = 10mA to 3A
-2.85/-3.0/-3.3/-3.5/-5.0
Ground Pin Current
(Note 4)
AMS1503-1.5/-2.5/-2.85/
-3.0/-3.3/-3.5/-5.0
VCONTROL = VOUT + 2.5V, VPOWER =VOUT + 0.8V,
LOAD = 10mA to 3A
mA
6
10
I
Adjust Pin Current
Current Limit
AMS1503
VCONTROL = 2.75V, VPOWER = 2.05V, ILOAD = 10mA
(VIN - VOUT) = 5V
5
120
4.0
µA
AMS1503/-1.5/-2.5/
A
3.0
3.5
-2.85/-3.0/-3.3/-3.5/-5.0
Ripple Rejection
AMS1503/-1.5/-2.5/
VCONTROL = VPOWER = VOUT + 2.5V, VRIPPLE = 1VP-P
ILOAD = 1.5A
60
80
dB
-2.85/-3.0/-3.3/-3.5/-5.0
Thermal Regulation
AMS1503
TA = 25°C, 30ms pulse
0.002
0.020
%W
Thermal Resistance
Junction-to-Case
T Package: Control Circuitry/ Power Transistor
0.65/2.70
0.65/2.70
°C/W
°C/W
M & D Package: Control Circuitry/ Power Transistor
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723
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