OMNI OM3957NMM, OM3957STM, OM3957SMM Datasheet

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OMNI OM3957NMM, OM3957STM, OM3957SMM Datasheet

OM3957NMM

OM3957STM

OM3957SMM

 

1.3 AMP LOW DROPOUT 3.3 FIXED VOLTAGE

REGULATOR APPROVED TO SMD 5962-98590

 

 

 

Three Terminal, 3.3 Volt Positive Fixed

 

 

 

Low Dropout Voltage Regulator In

 

 

 

Hermetic JEDEC TO-257AA

Please see mechanical

 

and Surface Mount Packages

 

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 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 @ 25°C

Input Voltage .... .................................................... 30V

OutputCurrent........................................................1.3A

Operating Junction Temperature..................................-65°Cto+150°C

Storage TemperatureRange....................................-65°Cto+150°C

Lead Temperature(Soldering10seconds).... ............................... 300°C

Power Dissipation (Pd)............................ ... .......... InternallyLimited

Thermal Resistance:

qJC (Isolated)..... .............................................. 4.2°C/W qJA .... ....................................................... 42°C/W

 

Part Number Designator

Standard Military Drawing

Omnirel Part Number

5962-9859001MMA

OM3957SMM

5962-9859001M U A

OM3957STM

5962-9859001MNA

OM3957NMM

9 01 R1

3.3- 1

supersedes 8 07 R0

 

OM3957NMM

 

OM3957STM

 

 

 

 

 

 

 

 

 

 

 

OM3957SMM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ELECTRICAL CHARACTERISTICS -55°C

TA

125°C (unless otherwise specified)

 

Parameter

 

Symbol

 

Test Conditions

 

 

 

Min.

Max.

 

Unit

Output Voltage

 

VOUT

VIN =5.0V,IOUT = 10 mA

 

 

3.267

3.333

 

V

 

 

 

 

 

 

TA = 25° C

 

 

 

 

 

 

 

 

 

 

 

 

4.75 V

VIN

18 V,

 

3.235

3.365

 

V

 

 

 

 

 

10 mA

IOUT

1.3 A

 

 

 

 

 

 

Line Regulation

 

³VOUT

4.5V VIN

18 V, IOUT = 0 A, TA = 25° C

 

 

10

 

m V

(Note 1)

 

³VIN

4.5V

VIN

18 V, IOUT = 0 A

 

 

12

 

 

Load Regulation

 

³VOUT

 

VIN = 5.0 V, 0A

IOUT

1.3 A

 

 

 

15

 

m V

(Note 1)

 

OUT

 

TA = 25° C

 

 

 

 

 

 

 

 

 

 

 

 

VIN = 5.0 V, 0A

IOUT

1.3 A

 

 

25

 

m V

Dropout Voltage

 

VD O

IOUT = 1.3 A, ³VREF = 1%

 

 

1.5

 

V

Thermal Regulation

-

 

 

30 ms pulse, TA = +25° C

 

 

 

0.04

 

%/W

Ripple Rejection

 

³VIN

 

f = 120 Hz, CAdj = 25 µF,

 

60

 

 

dB

 

 

³VOUT

COUT = 25 µF (tantalum), IOUT = 1.3 A,

 

 

 

 

 

 

 

 

 

 

 

VIN = 6.3 V

 

 

 

 

 

 

 

Quiescent Current

 

IQ

 

VIN = 18 V

 

 

 

10

 

m A

Current Limit

 

ILim

 

VIN = 8.3 V

 

 

1.3

2.5

 

A

 

 

 

 

 

 

VIN = 28.3 V

 

 

.050

-

 

A

Temperature Stability

 

³VOUT

 

-55° C

TJ

 

+125° C

 

 

 

1.5

 

%

(Note 2)

 

³T

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Long Term Stability

 

³VOUT

 

TA = +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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