AMS1085
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at IOUT = 0 mA, and TJ = +25°C unless otherwise specified.
Parameter
Device
Conditions
Min
Typ
Max
Units
Current Limit
AMS1085/-1.5/-2.5/-2.85/ (VIN - VOUT) = 5V
-3.0/-3.3/-3.5/-5.0
A
3.00
3.50
5
4.00
10
Minimum Load
Current
AMS1085
(VIN - VOUT) = 12V (Note 5)
mA
mA
dB
Quiescent Current
AMS1085/-1.5/-2.5/-2.85/
-3.0/-3.3/-3.5/-5.0
5
10
VIN £ 12V
Ripple Rejection
AMS1085
60
60
60
60
60
60
60
60
75
f =120Hz , COUT = 25mF Tantalum, IOUT = 3A,
(VIN-VOUT ) = 3V, CADJ =25mF
AMS1085-1.5
AMS1085-2.5
AMS1085-2.85
AMS1085-3.0
AMS1085-3.3
AMS1085-3.5
AMS1085-5.0
dB
dB
dB
dB
dB
dB
dB
%W
72
72
72
72
72
72
68
f =120Hz , COUT = 25mF Tantalum, IOUT = 3A,
VIN = 4.5V
f =120Hz , COUT = 25mF Tantalum, IOUT = 3A,
VIN = 5.5V
f =120Hz , COUT = 25mF Tantalum, IOUT = 3A,
VIN = 6V
f =120Hz , COUT = 25mF Tantalum, IOUT = 3A
VIN = 6V
f =120Hz , COUT = 25mF Tantalum, IOUT = 3A
VIN = 6.3V
f =120Hz , COUT = 25mF Tantalum, IOUT = 3A
VIN = 6.5V
f =120Hz , COUT = 25mF Tantalum, IOUT = 3A
VIN = 8V
Thermal Regulation
Adjust Pin Current
AMS1085
AMS1085
TA = 25°C, 30ms pulse
0.008
55
0.04
10mA £ IOUT £ 3A , 1.5V£ (VIN - VOUT) £ 12V
mA
mA
120
5
Adjust Pin Current
Change
AMS1085
0.2
10mA £ IOUT £ 3A , 1.5V£ (VIN - VOUT) £12V
mA
Temperature Stability
Long Term Stability
RMS Output Noise
%
%
%
0.5
0.3
TA =125°C, 1000Hrs
1
0.003
TA = 25°C , 10Hz £ f £ 10kHz
(% of VOUT
)
Thermal Resistance
Junction-to-Case
M Package: Control Circuitry/ Power Transistor
T Package: Control Circuitry/ Power Transistor
1.5/4.0
1.5/4.0
°C/W
°C/W
Parameters identified with boldface type apply over the full operating temperature range.
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. For guaranteed specifications and test conditions, see the
Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed.
Note 2: Line and Load regulation are guaranteed up to the maximum power dissipation of 15W. Power dissipation is determined by the input/output differential
and the output current. Guaranteed maximum power dissipation will not be available over the full input/output range.
Note 3: See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation are measured at a constant junction
temperature by low duty cycle pulse testing. Load regulation is measured at the output lead ~1/8” from the package.
Note 4: Dropout voltage is specified over the full output current range of the device.
Note 5: Minimum load current is defined as the minimum output current required to maintain regulation. When (VIN - VOUT) = 12V the device is guaranteed to
regulate if the output current is greater than 10mA.
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
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