OM3957NMM
OM3957SMM
OM3957STM
1.3 AMP LOW DROPOUT 3.3 FIXED VOLTAGE
R E G U L ATOR APPROVED TO SMD 5962-98590
Three Terminal, 3.3 Volt Positive Fixed
Low Dropout Voltage Regulator In
Hermetic JEDEC TO-257AA
and Surface Mount Packages
Please see mechanical
outlines herein
FEATURES
•
•
•
•
•
•
•
Similar To Industry Standard LT1086 -3.3
Approved To DS C C Standardized Military Drawing Number 5962-98590
Built In Thermal Overload Protection
Short Circuit Current Limiting
Available In Isolated Package
Output Voltage Tolerance is Guaranteed To ±1%
Guaranteed Dropout Voltage At Multiple Current Levels
DESCRIPTION
This 3.3 volt fixed voltage regulator is designed to provide 1.3A of current with a higher
e
fficiency than conventional voltage regulators. This device is designed to operate down to 1
v l i p t t o t u d fferential and the 1.5V dropout voltage is guaranteed at the maximum
ot nu o upt i
output current. This device is ideally suited for those systems where high reliability, s a l s z
ml ie
and low weight are required. The isolated package simplifies the system assembly methods.
ABSOLUTE MAXIMUM RATINGS
@
25°C
Input Votg .... .............................................. ..... 3 V
lae
.
0
Otu Cret . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 A
upt urn
.
.
Operating Junction Te p r t r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 ° t + 1 0 C
meaue
- 5C o 5°
Storage Te p r t r R n e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 ° t + 1 0 C
meaue ag
- 5C o 5°
Lead Te p r t r ( o d r n 1 s c n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 0 C
meaue Sleig 0 eod)
0°
Power Dissipation (P
d
)............................ ... .......... Itral Lmtd
nenly iie
Thermal Resistance:
q
JC
(sltd ..... .............................................. 42CW
Ioae)
.°/
q
JA
.... ....................................................... 4°/
2CW
Part Number Designator
Standard Military Drawing
Omnirel Part Number
5962-9859001MMA
OM3957SMM
5962-9859001M U A
OM3957STM
5962-9859001MNA
OM3957NMM
9 01 R1
supersedes 8 07 R0
33 - 1
.
OM3957NMM
OM3957SMM
OM3957STM
ELECTRICAL CHARACTERISTICS
Parameter
Output Voltage
Symbol
V
O U T
-55°C
T
A
125°C (unless otherwise specified)
Min.
3.267
Max.
3.333
Unit
V
Test Conditions
V
IN
= 5 0 V I
O U T
= 10 mA
. ,
T
A
= 25° C
4.75 V
10 mA
V
IN
I
O U T
18 V,
1.3 A
•
3.235
3.365
V
Line Regulation
(Note 1)
Load Regulation
(Note 1)
³
OUT
V
³
IN
V
³
OUT
V
I
O U T
³
4.5V
V
IN
4.5V
1 V I
O U T
= 0 A T
A
= 25° C
8 ,
,
V
IN
1 V I
O U T
= 0 A
8 ,
I
O U T
1.3 A
10
mV
•
12
15
mV
V
IN
= 5 0 V 0
. , A
T
A
= 25° C
V
IN
= 5 0 V 0
. , A
I
O U T
1.3 A
Dropout Voltage
Thermal Regulation
Ripple Rejection
V
D O
-
³
IN
V
³
OUT
V
I
U T
= 1 3 A ³
REF
= 1%
. , V
O
30 ms pulse, T
A
= +25° C
f = 120 Hz, C
Adj
= 25 µF,
C
O U T
= 2 µ ( a t l m , I
O U T
= 1 3 A
5 F tnau)
. ,
V
IN
= 6.3 V
•
•
•
60
25
15
.
0.04
mV
V
%/W
dB
Quiescent Current
Curr n L m t
et ii
I
Q
I
Lim
V
IN
= 18 V
V
I
= 8.3 V
N
V
IN
= 28.3 V
•
•
•
10
13
.
.050
25
.
-
15
.
mA
A
A
%
Temperature Stability
(Note 2)
Long Term Stability
(Note 2)
³
OUT
V
³
T
³
OUT
V
³
T
-55° C
T
J
+125° C
T
A
= +125° C, t = 1000 hrs
10
.
%
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
pwrdsiainwl ntb aalbeoe tefl iptotu vlaerne
oe ispto il o e vial vr h ul nu/upt otg ag.
2 Guaranteed by design, characterization or correlation to other tested parameters.
.
3 The • denotes the specifications which apply over the full operating temperature range.
.
Talking
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