3.3 - 119
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
Power Dissipation (P
d
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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
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 (T
A
) . . . . . . . . . . . . . . . . - 55°C to + 125°C
Input Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 5V to -35 V
