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OM3957NMM
OM3957STM
OM3957SMM
ELECTRICAL CHARACTERISTICS -55°C
T
A
125°C (unless otherwise specified)
Parameter
Symbol
Test Conditions
Min.
Max.
Unit
Output Voltage
V
OUT
V
IN = 5.0 V, IOUT = 10 mA
3.267
3.333
V
T
A = 25° C
4.75 V
V
IN
18 V,
•
3.235
3.365
V
10 mA
I
OUT
1.3 A
Line Regulation
³V
OUT
4.5V
V
IN
18 V, I
OUT = 0 A, TA = 25° C
10
m V
(Note 1)
³V
IN
4.5V
V
IN
18 V, I
OUT = 0 A
•
12
Load Regulation
³V
OUT
V
IN = 5.0 V, 0A
I
OUT
1.3 A
15
m V
(Note 1)
³
I
OUT
T
A = 25° C
V
IN = 5.0 V, 0A
I
OUT
1.3 A
•
25
m V
Dropout Voltage
V
DO
I
OUT = 1.3 A, ³VREF = 1%
•
1.5
V
Thermal Regulation
-
30 ms pulse, T
A = +25° C
0.04
% / W
Ripple Rejection
³V
IN
f = 120 Hz, C
Adj = 25 µF,
•
60
dB
³V
OUT
C
OUT = 25 µF (tantalum), IOUT = 1.3 A,
V
IN = 6.3 V
Quiescent Current
I
Q
V
IN = 18 V
•
10
m A
Current Limit
I
Lim
V
IN = 8.3 V
•
1.3
2.5
A
V
IN = 28.3 V
•
.050
-
-A
Temperature Stability
³V
OUT
-55° C
T
J
+125° C
1.5
%
(Note 2)
³T
Long Term Stability
³V
OUT
T
A = +125° C, t = 1000 hrs
1.0
%
(Note 2)
³T
Notes:
1
. Line and Load Regulation are measured at a constant junction temperature using a low duty cycle pulse technique.
Although power dissipation is internally limited, regulation is guaranteed up to the maximum power dissipation of 13 W.
Power dissipation is determined by the input/output differential voltage and the output current. Guaranteed maximum
power dissipation will not be available over the full input/output voltage range.
2
. Guaranteed by design, characterization or correlation to other tested parameters.
3
. The • denotes the specifications which apply over the full operating temperature range.
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