OMNI OM1850STM, OM1850NKM, OM1850NMM Datasheet

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OMNI OM1850STM, OM1850NKM, OM1850NMM Datasheet

OM1850NKM OM1850STM

OM1850NMM

3 AMP LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR APPROVED TO DESC DRAWING 5962-88646

Three Terminal, Positive Adjustable

Low Dropout Voltage Regulator In

Hermetic Packages

See Mechanical Outline

FEATURES

Similar To Industry Standard LT1085

Approved To DESC Standardized Military Drawing Number 5962-88646

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

DESCRIPTION

This three terminal positive adjustable voltage regulator is designed to provide 3.0A with higher efficiency than conventional voltage regulators. This device is designed to operate to 1 Volt input to output differential and the dropout voltage is specified as a function of load current. Supplied in easy-to-use hermetic TO-257, SMD-1 or TO-3 packages, 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

 

Storage Temperature Range

 

- 65°C to + 150°C

 

. . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3

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

. . . . . . . . 300°C

Thermal Resistance:

 

 

 

θJC (SMD-1) . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . 3.5°C/W

 

θJA (SMD-1) . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . 3.5°C/W

 

θJC (TO-257) . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . 4.2°C/W

 

θJA (TO-257). . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . 42°C/W

 

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

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . 3.0°C/W

 

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

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . 35°C/W

 

Maximum Output Current . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . 3.0 A

 

Recommended Operating Conditions:

 

 

Output Voltage Range . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . .3.3V to 15 V

 

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

- 55°C to + 125°C

 

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

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . 5V to 25 V

 

a

 

 

 

1 08 R4

3.3 - 79

 

 

Supersedes 0 03 R3

 

 

OM1850STM OM1850NMM OM1850NKM

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

Parameter

Symbol

Test Conditions

 

Min.

Max.

Unit

 

 

 

 

 

 

 

 

 

Reference Voltage

 

VREF

VIN - VOUT = 3.0 V, TA = 25° C

 

1.238

1.262

V

 

 

 

 

IOUT = 10 mA

 

 

 

 

 

 

 

 

1.5 V VIN - VOUT 25 V,

1.220

1.270

V

 

 

 

 

10 mA IOUT 2.0 A

 

 

 

 

Line Regulation

 

VOUT

1.5 V VIN - VOUT 15 V,

 

 

0.2

%

(Note 1)

 

VIN

 

IOUT = 10 mA, TA = 25° C

 

 

 

 

 

 

 

 

15 V VIN - VOUT 35 V,

 

0.5

%

 

 

 

 

IOUT = 10 mA

 

 

 

 

Load Regulation

 

VOUT

VIN - VOUT = 3.0 V, TA = 25° C

 

 

0.8

%

(Note 1)

 

IOUT

 

10 mA IOUT 2.0 A

 

 

 

 

 

 

 

 

 

 

1.0

%

 

 

 

 

 

 

 

 

Dropout Voltage

 

VDO

IOUT = 2.0 A, VREF = 1%

 

1.5

V

Thermal Regulation

-

 

30 ms pulse, TA = +25° C

 

 

0.02

%/W

Ripple Rejection

 

VIN

f = 120 Hz, CAdj = 25 µF,

60

 

dB

 

 

VOUT

 

COUT = 25 µF (tantalum), IOUT = 2.0 A,

 

 

 

 

 

 

 

 

VIN - VOUT = 3.0 V

 

 

 

 

Adjust Pin Current

 

IAdj

1.5 V VIN - VOUT 25 V,

 

120

µA

 

 

 

 

10 mA IOUT 2.0 A

 

 

 

 

Adjust Pin Current Change

 

IAdj

1.5 V VIN - VOUT 25 V,

 

5.0

µA

 

 

 

 

10 mA IOUT 2.0 A

 

 

 

 

Miminum Load Current

 

IMin

VIN - VOUT = 24 V

 

10

mA

Current Limit

 

ILim

VIN - VOUT 5.0 V

3.2

 

A

 

 

 

 

VIN - VOUT = 25 V

0.2

 

A

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

 

SMD #

 

Omnirel

 

Package

 

5962-8864601U

 

OM1850STM

TO-257 (Isolated)

 

5962-8864601N

 

OM1850NMM

SMD-1 (Non-Isolated)

 

5962-8864601X

 

OM1850NKM

TO-3

 

 

 

 

 

 

 

 

 

 

 

 

 

Part Numbering System

 

 

 

 

Voltage Regulators

 

* Package Codes:

 

 

 

OM-1850-S-T-M

 

 

 

K= TO-204AA (TO-3)

 

 

 

 

 

M= SMD-1

 

Company

 

 

 

T= TO-257AA

 

 

 

 

Screening

 

Identification

 

 

 

Part

Package

M= MIL-M 38535

 

 

 

 

 

 

Number

(see Package codes*)

 

 

 

S= Isolated

 

 

 

 

 

N= Non isolated

 

3.3 - 80

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