OMNI OM3914STM, OM3914NTM, OM3914NKM Datasheet
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OM3914NKM OM3914STM
OM3914NTM
3 AMP NEGATIVE ADJUSTABLE REGULATOR APPROVED TO DESC DRAWING 5962-87741
Three Terminal, Negative Adjustable
Voltage Regulator In Hermetic
Packages
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 (Pd) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
Internally Limited |
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Input - Output Voltage Differential . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . . . . . . . . 35 V |
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. . . . . . . . . . . . . . . . . . . . .Operating Junction Temperature Range |
- 55°C to + 150°C |
3.3 |
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Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
- 65°C to + 150°C |
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Lead Temperature (Soldering 10 seconds) . . . . . . . . . . . . . . . . . . . . |
. . . . . . . . 300°C |
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Thermal Resistance Junction to Case: |
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(TO-257, Isolated) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . . 3.5°C/W |
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(TO-257, Non-Isolated) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . . . 2.3°C/W |
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(TO-3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . . . 3.0°C/W |
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Recommended Operating Conditions: |
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Output Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . . -3V to -15 V |
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Ambient Operating Temperature Range (TA) . . . . . . . . . . . . . . . . |
- 55°C to + 125°C |
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Input Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . - 5V to -35 V |
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1 08 R2 |
3.3 - 119 |
Supersedes 4 11 R1 |
OM3914STM OM3914NTM |
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OM3914NKM |
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ELECTRICAL CHARACTERISTICS -55°C ≤ TA ≤ +125°C (unless otherwise specified) |
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Parameter |
Symbol |
Test Conditions |
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Min. |
Max. |
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Unit |
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Reference Voltage |
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VREF |
VIN - VOUT = 5 V, IOUT = 5 mA, TA = 25° C |
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-1.238 |
-1.262 |
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V |
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3 V ≤ VIN - VOUT ≤ 35 V |
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-1.215 |
-1.285 |
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Line Regulation |
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∆VOUT |
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3 V ≤ VIN - VOUT ≤ 35 V |
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0.015 |
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%/V |
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(Note 1) |
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∆VIN |
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0.04 |
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Load Regulation |
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∆VOUT |
VOUT ≤ 5 V, TA = 25° C |
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50 |
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mV |
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10 mA ≤ IOUT ≤ IMAX. |
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(Note 1) |
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∆IOUT |
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75 |
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VOUT ≥ 5.0 V |
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1.0 |
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% |
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10 mA ≤ IOUT ≤ IMAX. |
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1.5 |
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Thermal Regulation |
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30 ms pulse, TA = 25° C |
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0.02 |
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%/W |
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Ripple Rejection |
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∆VIN |
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VOUT = -10 V, f = 120 Hz, CAdj = 0 |
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56 |
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dB |
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(Note 2) |
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∆VREF |
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53 |
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VOUT = -10 V, f = 120 Hz, CAdj = 10 µF |
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70 |
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dB |
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60 |
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Adjust Pin Current |
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IAdj |
VDIFF = 35 V, IL = 10 mA |
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100 |
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µA |
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Adjust Pin Current Change |
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∆IAdj |
10 mA ≤ IOUT ≤ IMAX. |
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2.0 |
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µA |
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3 V ≤ VIN - VOUT ≤ 35 V |
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5.0 |
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Minimum Load Current |
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IMin |
VIN - VOUT ≤ 35 V |
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5.0 |
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mA |
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VIN - VOUT ≤ 10 V |
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3.0 |
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Current Limit |
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ILim |
VIN - VOUT ≤ 10 V |
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3.0 |
6.0 |
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A |
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3.0 |
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VIN - VOUT = 35 V |
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0.5 |
2.5 |
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A |
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0.5 |
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Temperature Stability |
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∆VOUT |
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-55° C ≤ TJ ≤ +125° C |
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1.5 |
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% |
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(Note 2) |
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∆T |
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Long Term Stability |
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∆VOUT |
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TA = +125° C, t = 1000 hrs |
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1.0 |
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% |
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(Note 2) |
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∆T |
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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 |
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PART NUMBER DESIGNATOR |
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Standard Military Drawing Number |
Omnirel Part Number |
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5962-8774101U |
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OM3914STM |
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5962-8774101T |
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OM3914NTM |
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5962-8774101X |
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OM3914NKM |
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“U” = Isolated |
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“T” = Non-Isolated |
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Part Numbering System |
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Voltage Regulators |
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OM-3914-S-T-M |
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Company |
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Screening |
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Identification |
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Part |
Package M= MIL-M 38535 |
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Number |
(see Package codes*) |
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S= Isolated |
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N= Non isolated |
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3.3 - 120