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Электронный компонент: OM3957NMM

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3.3 - 1
Three Terminal, 3.3 Volt Positive Fixed
Low Dropout Voltage Regulator In
Hermetic JEDEC TO-257AA
and Surface Mount Packages
9 01 R1
supersedes 8 07 R0
1.3 AMP LOW DROPOUT 3.3 FIXED VOLTAGE
R E G U L ATOR APPROVED TO SMD 5962-98590
F E AT U R E S
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
efficiency than conventional voltage regulators. This device is designed to operate down to 1
volt input to output differential and the 1.5V dropout voltage is guaranteed at the maximum
output current. This device is ideally suited for those systems where high reliability, small size
and low weight are required. The isolated package simplifies the system assembly methods.
ABSOLUTE MAXIMUM RATINGS
@ 25C
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 30 V
Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 1.3 A
Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .- 65C to + 150C
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .- 65C to + 150C
Lead Temperature (Soldering 10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300C
Power Dissipation (P
d
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited
Thermal Resistance:
q
JC
(Isolated) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2C/W
q
JA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42C/W
OM3957NMM OM3957STM
OM3957SMM
Part Number Designator
Standard Military Drawing
Omnirel Part Number
5962-9859001MMA
O M 3 9 5 7 S M M
5962-9859001M U A
OM3957STM
5962-9859001MNA
O M 3 9 5 7 N M M
Please see mechanical
outlines herein
OM3957NMM OM3957STM
OM3957SMM
ELECTRICAL CHARACTERISTICS
-55C
T
A
125C (unless otherwise specified)
Parameter
Symbol
Test Conditions
Min.
Max.
Unit
Output Voltage
V
O U T
V
IN
= 5.0 V, I
O U T
= 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
O U T
1.3 A
Line Regulation
V
O U T
4.5V
V
IN
18 V, I
O U T
= 0 A, T
A
= 25 C
10
m V
(Note 1)
V
IN
4.5V
V
IN
18 V, I
O U T
= 0 A
12
Load Regulation
V
O U T
V
IN
= 5.0 V, 0A I
O U T
1.3 A
15
m V
(Note 1)
I
O U T
T
A
= 25 C
V
IN
= 5.0 V, 0A I
O U T
1.3 A
25
m V
Dropout Voltage
V
D O
I
O U T
= 1.3 A, V
REF
= 1%
1.5
V
Thermal Regulation
-
30 ms pulse, T
A
= +25 C
0.04
% / W
Ripple Rejection
V
IN
f = 120 Hz, C
Adj
= 25 F,
60
dB
V
O U T
C
O U T
= 25 F (tantalum), I
O U T
= 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
V
O U T
-55 C T
J
+125 C
1.5
%
(Note 2)
T
Long Term Stability
V
O U T
T
A
= +125 C, t = 1000 hrs
1.0
%
(Note 2)
T
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.
205 Crawford Street, Leominster, MA 01453 USA (978) 534-5776 FAX (978) 537-4246
Visit Our Web Site at www.omnirel.com
OM3957NMM OM3957STM
OM3957SMM
1
2
3
4
PIN OUT
1
Ground
2
V
O U T
3
V
IN
4
Isolated
CONNECTION DIAGRAM
.430
.410
.200
.190
.038 MAX.
.005
.120 TYP.
.537
.527
.665
.645
.420
.410
.150
.140
.750
.500
.100 TYP.
.035
.025
.045
.035
MECHANICAL OUTLINE
N O T E S
Case is metal/hermetically sealed
Isolated Tab
MECHANICAL OUTLINE
MECHANICAL OUTLINE
.425
.200
.100
.350 MIN.
.080
.160
.020
.020
.035 WIDE
FLAT 3 PLCS.
.115
.425
1
2
3
Front View
Pin 1 - Ground
Pin 2 - V
IN
Pin 3 - V
O U T
Tab
- Isolated
OM3957STM
O M 3 9 5 7 S M M
O M 3 9 5 7 N M M
.450
.140
.415
.157
.015
.140
.140
.050
.050
.037
.375
.030
MIN.
.625
1
2
3
Front View
Pin 1 - V
IN
Pin 2 - Ground
Pin 3 - V
O U T
THANK YOU FOR YOUR INTEREST
THANK YOU FOR YOUR INTEREST
IN OMNIREL
IN OMNIREL
'S PRODUCTS!
'S PRODUCTS!
205 Crawford Street, Leominster, MA 01453 USA (978) 534-5776 FAX (978) 537-4246
Visit Our Web Site at www.omnirel.com