OMNIREL OM1840SCM, OM1840NKM, OM1840NCM Datasheet
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OM1840NKM OM1840SCM
OM1840NCM
5 AMP LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR APPROVED TO DESC DRAWING 5962-89521
Three Terminal, Positive Adjustable
Low Dropout Voltage Regulator In
Hermetic Packages
FEATURES
•Similar To Industry Standard LT1084
•Approved To DESC Standardized Military Drawing Number 5962-89521
•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-258 Available in Isolated and Non-Isolated Packages
DESCRIPTION
This three terminal positive adjustable voltage regulator is designed to provide 5A 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-258 and TO-3 packages, 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 Input - Output Voltage Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 V
Operating Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . - 55°C to + 150°C
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65°C to + 150°C 3.3 Lead Temperature (Soldering 10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300°C
Thermal Resistance:
θJC (TO-258 Isolated) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.0°C/W θJC (TO-258 Non-Isolated) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.3°C/W θJC (TO-3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.0°C/W Maximum Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.0 A
Recommended Operating Conditions:
Output Voltage Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.3V to 15 V Ambient Operating Temperature Range (TA) . . . . . . . . . . . . . . . . - 55°C to + 125°C Input Voltage Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V to 25 V
1 08 R3 |
3.3 - 75 |
Supersedes 4 11 R2 |
OM1840SCM OM1840NCM OM1840NKM
ELECTRICAL CHARACTERISTICS -55°C ≤ TA ≤ +125°C (unless otherwise specified)
Parameter |
Symbol |
Test Conditions |
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Max. |
Unit |
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Reference Voltage |
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VREF |
VIN - VOUT = 3.0 V, |
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1.238 |
1.262 |
V |
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IOUT = 10 mA, TA = 25° C |
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1.5 V ≤ VIN - VOUT ≤ 25 V, |
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1.225 |
1.270 |
V |
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IOUT = 10 mA, IFL = 3.0 A |
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Line Regulation |
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∆VOUT |
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1.5 V ≤ VIN - VOUT ≤ 15 V, |
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0.2 |
% |
(Note 1) |
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∆VIN |
IOUT = 10 mA, TA = 25° C |
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15 V ≤ VIN - VOUT ≤ 35 V, |
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0.5 |
% |
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IOUT = 10 mA |
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Load Regulation |
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∆VOUT |
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VIN - VOUT = 3.0 V, TA = 25° C |
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0.3 |
% |
(Note 1) |
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∆IOUT |
IOUT = 10 mA, IFL = 3.0 A |
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0.4 |
% |
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Dropout Voltage |
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VDO |
IFL = 3.0 A, ∆VREF = 1% |
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1.5 |
V |
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Thermal Regulation |
- |
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30 ms pulse, TA = +25° C |
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0.015 |
%/W |
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Ripple Rejection |
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∆VIN |
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f = 120 Hz, CAdj = 25 µF, |
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60 |
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dB |
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∆VOUT |
COUT = 25 µF (tantalum), IFL = 3.0 A, |
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VIN - VOUT = 3.0 V |
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Adjust Pin Current |
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IAdj |
1.5 V ≤ VIN - VOUT ≤ 25 V, |
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120 |
µA |
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IOUT = 10 mA, IFL = 3.0 A |
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Adjust Pin Current Change |
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∆IAdj |
1.5 V ≤ VIN - VOUT ≤ 25 V, |
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5.0 |
µA |
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10 mA ≤ IOUT ≤ 3.0 A |
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Miminum Load Current |
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IMin |
VIN - VOUT = 25 V |
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10 |
mA |
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Current Limit |
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ILim |
VIN - VOUT ≤ 5.0 V |
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5.5 |
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A |
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VIN - VOUT = 25 V |
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0.3 |
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A |
Temperature Stability |
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∆VOUT |
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-55° C ≤ TJ ≤ +125° C |
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1.5 |
% |
(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 |
% |
(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 45 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 |
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Omnirel Part Number |
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8952101Y |
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OM1840SCM |
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8952101Z |
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OM1840NCM |
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8952101X |
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OM1840NKM |
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“Y” = Isolated |
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“Z” = Non-Isolated
Part Numbering System
Voltage Regulators
OM-1840-S-C-M
Company |
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Screening |
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M= MIL-M |
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Identification |
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Part |
38535 |
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Number |
Package |
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(see Package codes*) |
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S= Isolated |
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N= Non |
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isolated |
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* Package Codes:
K= TO-204AA (TO-3) Z= TO-259AA (Z-Tab) C = TO-258AA
3.3 - 76