OMNI OM3914STM, OM3914NTM, OM3914NKM Datasheet

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OMNI OM3914STM, OM3914NTM, OM3914NKM Datasheet

OM3914NKM OM3914STM

OM3914NTM

3 AMP NEGATIVE ADJUSTABLE REGULATOR APPROVED TO DESC DRAWING 5962-87741

Three Terminal, Negative Adjustable

Voltage Regulator In Hermetic

Packages

FEATURES

Similar To Industry Standard LT1033

Approved To DESC Standardized Military Drawing Number 5962-8774101

Adjustable Output Voltage

Built In Thermal Overload Protection

Short Circuit Current Limiting

Maximum Output Voltage Tolerance is Guaranteed To ±1%

Guaranteed Dropout Voltage At Multiple Current Levels

TO-257 Available in Isolated and Non-Isolated Packages

DESCRIPTION

This three terminal negative adjustable voltage regulator is designed to provide 3A with higher efficiency than conventional voltage regulators. This device is designed to operate down to 1 Volt input to output differential and the dropout voltage is fully specified as a function of load current. Supplied in easy-to-use hermetic TO-257 and TO-3, this device is ideally suited for Military applications where small size and high reliability is required.

ABSOLUTE MAXIMUM RATINGS @ 25°C

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

Internally Limited

 

Input - Output Voltage Differential . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . 35 V

 

. . . . . . . . . . . . . . . . . . . . .Operating Junction Temperature Range

- 55°C to + 150°C

3.3

Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

- 65°C to + 150°C

 

Lead Temperature (Soldering 10 seconds) . . . . . . . . . . . . . . . . . . . .

. . . . . . . . 300°C

 

Thermal Resistance Junction to Case:

 

 

(TO-257, Isolated) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . 3.5°C/W

 

(TO-257, Non-Isolated) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . 2.3°C/W

 

(TO-3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . 3.0°C/W

 

Recommended Operating Conditions:

 

 

Output Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . -3V to -15 V

 

Ambient Operating Temperature Range (TA) . . . . . . . . . . . . . . . .

- 55°C to + 125°C

 

Input Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . - 5V to -35 V

 

1 08 R2

3.3 - 119

Supersedes 4 11 R1

OM3914STM OM3914NTM

 

OM3914NKM

 

 

 

 

 

ELECTRICAL CHARACTERISTICS -55°C TA +125°C (unless otherwise specified)

 

 

 

 

 

 

 

 

 

 

 

 

 

Parameter

Symbol

Test Conditions

 

Min.

Max.

 

Unit

 

 

 

 

 

 

 

 

 

 

 

 

Reference Voltage

 

VREF

VIN - VOUT = 5 V, IOUT = 5 mA, TA = 25° C

 

-1.238

-1.262

 

V

 

 

 

 

 

3 V VIN - VOUT 35 V

-1.215

-1.285

 

 

 

 

 

 

 

 

 

Line Regulation

 

VOUT

 

3 V VIN - VOUT 35 V

 

 

0.015

 

%/V

 

(Note 1)

 

VIN

 

0.04

 

 

 

 

 

 

 

 

Load Regulation

 

VOUT

VOUT 5 V, TA = 25° C

 

 

50

 

mV

 

 

 

 

 

10 mA IOUT IMAX.

 

 

 

 

 

(Note 1)

 

IOUT

 

75

 

 

 

 

 

 

 

 

 

 

 

VOUT 5.0 V

 

 

1.0

 

%

 

 

 

 

 

10 mA IOUT IMAX.

 

1.5

 

 

 

 

 

 

 

 

 

 

Thermal Regulation

-

 

30 ms pulse, TA = 25° C

 

 

0.02

 

%/W

 

Ripple Rejection

 

VIN

 

VOUT = -10 V, f = 120 Hz, CAdj = 0

 

56

 

 

dB

 

(Note 2)

 

VREF

53

 

 

 

 

 

 

 

 

 

 

 

 

 

VOUT = -10 V, f = 120 Hz, CAdj = 10 µF

 

70

 

 

dB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

60

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Adjust Pin Current

 

IAdj

VDIFF = 35 V, IL = 10 mA

 

100

 

µA

 

Adjust Pin Current Change

 

IAdj

10 mA IOUT IMAX.

 

2.0

 

µA

 

 

 

 

 

3 V VIN - VOUT 35 V

 

5.0

 

 

 

 

 

 

 

 

 

 

Minimum Load Current

 

IMin

VIN - VOUT 35 V

 

5.0

 

mA

 

 

 

 

 

VIN - VOUT 10 V

 

3.0

 

 

 

 

 

 

 

 

 

 

Current Limit

 

ILim

VIN - VOUT 10 V

 

3.0

6.0

 

A

 

 

 

 

 

3.0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VIN - VOUT = 35 V

 

0.5

2.5

 

A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Temperature Stability

 

VOUT

 

-55° C TJ +125° C

 

1.5

 

%

 

(Note 2)

 

T

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Long Term Stability

 

VOUT

 

TA = +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 30 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.

3.3

 

 

PART NUMBER DESIGNATOR

 

Standard Military Drawing Number

Omnirel Part Number

 

 

5962-8774101U

 

OM3914STM

 

 

5962-8774101T

 

OM3914NTM

 

 

5962-8774101X

 

OM3914NKM

 

 

“U” = Isolated

 

 

 

 

“T” = Non-Isolated

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Part Numbering System

 

 

 

Voltage Regulators

 

 

 

 

OM-3914-S-T-M

 

 

Company

 

Screening

 

 

Identification

 

 

 

Part

Package M= MIL-M 38535

 

 

 

 

 

 

Number

(see Package codes*)

 

 

 

S= Isolated

 

 

 

 

N= Non isolated

3.3 - 120

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