OMNI OM185SR, OM185ST, OM183SC, OM186SR, OM184SC, OM186ST Datasheet

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OMNI OM185SR, OM185ST, OM183SC, OM186SR, OM184SC, OM186ST Datasheet

OM183SC OM185ST OM185SR

OM184SC OM186ST OM186SR

7.5A, 5A, 3A, 1.5A LOW DROPOUT POSITIVE ADJUSTABLE REGULATORS

Three Terminal Adjustable Low Dropout

TO-257/TO-258 Positive Voltage Regulators

FEATURES

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

.015% Line Regulation

.01% Load Regulation

1% Reference Voltage

Hermetic TO-257 and TO-258 Isolated Packages

Electrically Equivalent to LT1083, 84, 85 and 86

DESCRIPTION

These three terminal positive adjustable voltage regulators are designed to provide 7.5A, 5A, 3A, and 1.5A 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. All devices are pin compatible with older three terminal regulators. Supplied in the easy-to-use hermetic metal TO-257 and TO-258 JEDEC packages also supplied in Omnirel’s new surface mount D2 Pac.. These devices are ideally suited for Military applications where small size, hermeticity and high reliability are required.

ABSOLUTE MAXIMUM RATINGS @ 25°C

Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . 35

V

 

3.3

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

- 55°C to + 150°C

Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

- 65°C to + 150°C

 

Output Current - OM183SC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . 7.5

A

 

OM184SC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . 5

A

 

OM185ST/SR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . 3

A

 

OM186ST/SR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . 1.5

A

 

Note: OM183SC and OM184SC products are packaged in the TO-258 Package (7.5A & 5A). OM185ST and OM186ST products are packaged in the TO-257 Package (3A & 1.5A).

0 03 R3

3.3 - 1

Supersedes 4 11 R2

OM183SC - OM186ST - OM186SR

ELECTRICAL CHARACTERISTICS (TC = 25°C unless otherwise noted)

 

 

Parameter

Conditions

Min.

Typ.

Max.

Units

 

 

 

 

 

 

 

 

 

 

Reference Voltage

IOUT = 10 mA, Tj = 25°C

 

 

 

 

 

 

 

(VIN - VOUT) = 3 V

1.238

1.250

1.262

V

 

 

 

10mA ≤ IOUT ≤ IFULL LOAD

 

 

 

 

 

 

 

1.5 V ≤ (VIN - VOUT) ≤ 25 V (Note 3)

1.220

1.250

1.270

V

 

 

 

 

 

 

 

 

 

 

Line Regulation

ILOAD = 10 mA, 1.5 V ≤ (VIN - VOUT) ≤ 15 V,

 

0.015

0.2

%

 

 

 

Tj = 25°C

 

0.035

0.2

%

 

 

 

15 V ≤ (VIN - VOUT) ≤ 35 V (Notes 1 & 2)

 

0.05

0.5

%

 

 

 

 

 

 

 

 

 

 

Load Regulation

(VIN - VOUT) = 3 V

 

 

 

 

 

 

 

10 mA ≤ IOUT ≤ IFULL LOAD

 

 

 

 

 

 

 

Tj = 25°C

 

0.5

0.8

%

 

 

 

(Notes 1, 2, 3)

 

.8

1.0

%

 

 

 

 

 

 

 

 

 

 

Dropout Voltage

∆VREF = 1%, IOUT = IFULL LOAD

 

1.3

1.5

V

 

 

Current Limit

 

 

 

 

 

 

 

OM183SC

(VIN - VOUT) = 5 V

 

8.0

 

A

 

 

 

(VIN - VOUT) = 25 V

 

0.4

 

A

 

 

OM184SC

(VIN - VOUT) = 5 V

 

5.5

 

A

 

 

 

(VIN - VOUT) = 25 V

 

0.3

 

A

 

 

OM185ST/SR

(VIN - VOUT) = 5 V

 

3.2

 

A

 

 

 

(VIN - VOUT) = 25 V

 

0.2

 

A

 

 

OM186ST/SR

(VIN - VOUT) = 5 V

 

1.5

 

A

 

 

 

(VIN - VOUT) = 25 V

 

0.75

 

A

 

 

 

 

 

 

 

 

 

 

Minimum Load Current

(VIN - VOUT) = 25 V

 

5

10

mA

 

 

 

 

 

 

 

 

 

 

Thermal Regulation

TA = 25°C, 30 ms pulse

 

 

 

 

 

 

OM183SC

Guaranteed by design

 

0.002

0.01

%/W

 

 

OM184SC

 

 

0.003

0.15

%/W

 

 

OM185ST/SR

 

 

0.004

0.02

%/W

 

 

OM186ST/SR

 

 

0.010

0.05

%/W

 

 

 

 

 

 

 

 

 

 

Ripple Rejection

f = 120 Hz

 

 

 

 

 

 

 

CADJ = 25 µF Tantalum

 

 

 

 

 

 

 

IOUT - IFULL LOAD (VIN - VOUT) = 3 V

60

75

 

dB

 

 

Adjust Pin Current

TJ = 25°C

 

55

 

µA

 

 

 

 

 

 

 

 

 

 

Adjust Pin Current Change

10mA ≤ IOUT ≤ IFULL LOAD

 

 

 

 

3.3

 

 

1.5 V ≤ (VIN - VOUT) ≤ 25 V

 

0.2

5

µA

 

 

 

 

 

 

 

 

Temperature Stability

-55°C ≤ TJ ≤ +150°C

 

0.5

 

%

 

 

Long Term Stability

TA = 125°C, 1000 Hrs.

 

0.3

1

%

 

 

 

 

 

 

 

 

 

 

Thermal Resistance

Junction-to-Case

 

 

 

 

 

 

TO-257AA/D2 Pac

 

 

 

4.2

°C/W

 

 

TO-258AA

 

 

 

2.75

°C/W

 

 

 

 

 

 

 

 

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 (OM183/60W, OM184/45W, OM185/30W, OM186/15W). 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: IFULL LOAD curve is defined as the minimum value of current limit as a function of input to output voltage. Note that 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.

3.3 - 2

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