OMNI OM185SR, OM185SM, OM186SR, OM186SM, OM185NR, OM186NR Datasheet

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OMNI OM185SR, OM185SM, OM186SR, OM186SM, OM185NR, OM186NR Datasheet

OM185SM/SR/NR

OM186SM/SR/NR

SURFACE MOUNT LOW DROPOUT POSITIVE

ADJUSTABLE REGULATOR

Three Terminal, Adjustable Low Dropout

2.0 Amp And 1.0 Amp Positive

Voltage Regulators

FEATURES

Hermetic Surface Mount Package

Operates Down To 1V Dropout, 1.5V @ Max. Current

.020% Line Regulation Typically

.050% Load Regulation Typically

1% Reference Voltage

Electrically Equivalent To LT1085 And LT1086

Available Hi-Rel Screened

DESCRIPTION

These three terminal positive adjustable voltage regulators in a surface mount package are designed to provide 2.0 Amps and 1.0 Amp with higher efficiency than conventional voltage regulators. The devices are designed to operate to 1 Volt input

to output differential and the dropout voltage is specified as a function of load current. These devices are ideally suited for Hi-Rel applications where surface mount, small size, hermeticity and high reliability are required.

ABSOLUTE MAXIMUM RATINGS

@ 25°C

 

Input Voltage . .

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

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

. . . . . . . 35 V

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

. . . . . . . . . . . . . . . . - 55°

C to + 150°C

Storage Temperature Range

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

. . . . . . . . . . . . . . . . - 55°

C to + 150°C

Output Current -

OM185SM . . . . . . . . . . . . . . .

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

. . . . . . 2.0 A

Output Current -

OM186SM . . . . . . . . . . . . . . .

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

. . . . . . 1.0 A

Thermal Resistance - OM185SM . . . . . . . . . . . . . .

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

. . . . . 9°C/W

Thermal Resistance -

OM186SM . . . . . . . . . . . . . .

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

. . . . 14°C/W

Lead Temperature (Soldering 10 Seconds) . . . . . .

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

. . . . . 280°C

3.5

4 11 R0

3.5 - 43

 

OM185SM/SR/NR - OM186SM/SR/NR

ELECTRICAL CHARACTERISTICS

(TJ = -55°C to +125°C)

Parameter

 

Conditions

 

 

 

 

 

Min.

Max.

Units

 

 

 

 

 

 

 

 

 

 

Reference Voltage

I

OUT

= 10mA, T j= 25°C

 

 

 

 

 

 

 

 

(V IN - V OUT

) = 3V

 

 

1.238

1.262

V

 

 

 

10mA ≤ I

OUT

≤ I

 

 

 

 

 

 

 

 

 

 

 

 

FULL LOAD

 

 

 

 

 

 

 

 

1.5V ≤ (V

IN - V OUT ) ≤ 25 V (Note 3)

 

1.220

1.270

V

Line Regulation

I

LOAD

= 10mA, 1.5V ≤ (V IN-V OUT ) ≤ 15V, T

j= 25°C

 

 

0.25

%

 

 

 

15V ≤ (V

IN- V OUT

) ≤ 35V (Notes 1 & 2)

 

 

0.6

%

Load Regulation

(V

IN - V

OUT

) = 3V

 

 

 

 

 

 

 

 

10mA ≤ I

OUT

≤ I

 

 

 

 

 

 

 

 

 

 

 

 

FULL LOAD

 

 

 

 

 

 

 

 

T j= 25°C (Notes 1, 2, & 3)

 

 

 

1.0

%

 

 

 

 

 

 

 

 

 

 

 

1.2

%

 

 

 

 

 

 

 

 

 

 

 

Dropout Voltage

 

∆V

REF

= 1%, I OUT

=FULLI LOAD

 

 

1.5

V

Current Limit

 

 

 

 

 

 

 

 

 

 

 

 

 

OM185SM

 

(V

IN - V OUT

) = 5V

 

2.0

 

A

 

 

 

(V IN - V OUT

) = 25V

 

0.10

 

A

OM186SM

(V

IN - V OUT

) = 5V

 

1.0

 

A

 

 

 

(V IN - V OUT

) = 25V

 

0.05

 

A

Minimum Load Current

(V

IN - V

OUT

) =

25V

 

 

15

mA

Thermal Regulation

T

A = 25°C, 30 ms pulse

 

 

 

 

 

OM185SM

 

 

 

 

 

 

 

 

 

 

 

0.025

%/W

OM186SM

 

 

 

 

 

 

 

 

 

 

0.055

%/W

 

 

 

 

 

 

 

 

 

 

 

 

Ripple Rejection

f = 120Hz

 

 

 

 

 

 

 

 

 

 

 

 

C ADJ

= 25µF Tantalum

 

 

 

 

 

 

 

 

IOUT

- IFULL LOAD

(V IN - V OUT ) = 3V

 

 

60

 

dB

Adjust Pin Current

T

J = 25°C

 

 

 

 

 

120

µ A

Adjust Pin Current Change

10mA ≤ I

 

 

OUT

≤ IFULL LOAD

 

 

 

 

 

 

 

 

1.5V ≤ (V

IN - V OUT ) ≤ 25V

 

 

5

µ A

Temperature Stability

-55°C ≤ T

 

 

J ≤ +150°C

 

 

 

1

%

Long Term Stability

T

A = 125°C, 1000 Hrs.

 

 

 

1

%

Note 1:

Load and line regulation are measured at a constant junction temperature by low duty cycle pulse testing.

 

 

 

Note 2:

Line and load regulation are guaranteed up to the maximum power dissipation (OM185/20W, OM186/10W).

 

 

 

Power dissipation is determined by the input/output differential and the output current. Guaranteed maximum

 

 

 

 

power dissipation will not be available over the full input/output voltage range.

 

 

 

 

 

Note 3:

I

curve is defined as the minimum value of current limit as a function of input to output voltage.

Note that

 

 

 

FULL LOAD

 

 

 

 

 

 

 

 

 

 

 

 

 

power dissipation is only achievable over a limited range of input to output voltage.

 

 

 

 

 

Note 4:

Dropout voltage is specified over the full output current range of the device.

 

 

 

 

 

The denotes the specifications which apply over the full operating temperature range.

3.5

3.5 - 44

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