
Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMS2911
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at I
OUT
= 0 mA, and T
J
= +25°C unless otherwise specified.
Parameter
Device
Conditions
Min Typ Max
Units
Dropout Voltage
(V
IN
-
V
OUT
)
AMS2911/-1.5/-2.5/-2.85/
-3.3/-5.0
V
OUT
,
V
REF
= 1%, I
OUT
= 1A (Note 4)
1.3
1.5
V
Current Limit
AMS2911/-1.5/-2.5/2.85/
-3.3/-5.0
(V
IN
- V
OUT
) = 5V
.9
1.1
1.5
A
Minimum Load
Current
AMS2911
(V
IN
- V
OUT
) = 12V (Note 5)
5
10
mA
Quiescent Current
AMS2911/-1.5/-2.5/-2.85/
-3.3/-5.0
V
IN
≤
12V
5
10
mA
Ripple Rejection
AMS2911
f =120Hz , C
OUT
= 25
μ
F Tantalum, I
OUT
= 1A,
(V
IN
-V
OUT
) = 3V, C
ADJ
=25
μ
F
60
75
dB
AMS2911-1.5
f =120Hz , C
OUT
= 25
μ
F Tantalum, I
OUT
= 1A,
V
IN
= 6V
60
72
dB
AMS2911-2.5
f =120Hz , C
OUT
= 25
μ
F Tantalum, I
OUT
= 1A,
V
IN
= 6V
60
72
dB
AMS2911-2.85
f =120Hz , C
OUT
= 25
μ
F Tantalum, I
OUT
= 1A,
V
IN
= 6V
60
72
dB
AMS2911-3.3
f =120Hz , C
OUT
= 25
μ
F Tantalum, I
OUT
= 1A
V
IN
= 6.3V
60
72
dB
AMS2911-5
f =120Hz , C
OUT
= 25
μ
F Tantalum, I
OUT
= 1A
V
IN
= 8V
60
68
dB
Thermal Regulation
AMS2911
T
A
= 25°C, 30ms pulse
0.008
0.04
%W
Adjust Pin Current
AMS2911
10mA
≤
I
OUT
≤
1A , 1.5V
≤
(V
IN
- V
OUT
)
≤
12V
55
120
μ
A
μ
A
Adjust Pin Current
Change
AMS2911
10mA
≤
I
OUT
≤
1A , 1.5V
≤
(V
IN
- V
OUT
)
≤
12V
0.2
5
μ
A
Temperature Stability
0.5
%
Long Term Stability
T
A
=125°C, 1000Hrs
0.3
1
%
RMS Output Noise
(% of V
OUT
)
T
A
= 25°C , 10Hz
≤
f
≤
10kHz
0.003
%
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 1.2W. 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 1.5
≤
(V
IN
- V
OUT
)
≤
12V the device is guaranteed
to regulate if the output current is greater than 10mA.