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3.3

OM3914NKM

1 08 R2

Supersedes 4 11 R1

OM3914STM

OM3914NTM

Three Terminal, Negative Adjustable

Voltage Regulator In Hermetic

Packages

3 AMP NEGATIVE ADJUSTABLE REGULATOR APPROVED

TO DESC DRAWING 5962-87741

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

Input - Output Voltage Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 V

Operating Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . - 55°C to + 150°C

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

Input Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 5V to -35 V