OM1860NKM OM1860STM
OM1860NHM
1.5 AMP LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR APPROVED TO DESC DRAWING 5962-89981
Three Terminal, Positive Adjustable
Low Dropout Voltage Regulator In
Hermetic Packages
FEATURES
•Similar To Industry Standard LT1086
•Approved To DESC Standardized Military Drawing Number 5962-89981
•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 positive adjustable voltage regulator is designed to provide 1.5A with higher efficiency than conventional voltage regulators. This device is designed to operate to 1 Volt input to output differential and the dropout voltage is specified as a function of load current. Supplied in easy-to-use hermetic TO-257, TO-3 and TO-39 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
Lead Temperature (Soldering 10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300°C 3.3 Thermal Resistance:
θJC (TO-257, Isolated) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2°C/W θJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42°C/W θJC (TO-3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0°C/W θJA (TO-3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35°C/W θJC (TO-39) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40°C/W θJA (TO-39) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140°C/W
Maximum Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 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 - 83 |
Supersedes 4 11 R2 |
OM1860STM OM1860NKM OM1860NHM
ELECTRICAL CHARACTERISTICS -55°C ≤ TA ≤ 125°C (unless otherwise specified)
Parameter |
Symbol |
Test Conditions |
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Min. |
Max. |
Unit |
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Reference Voltage |
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VREF |
VIN - VOUT = 3.0 V, TA = 25° C |
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1.238 |
1.262 |
V |
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IOUT = 10 mA |
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1.5 V ≤ VIN - VOUT ≤ 25 V, |
• |
1.220 |
1.270 |
V |
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10 mA ≤ IOUT ≤ 1.0 A |
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Line Regulation |
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∆VOUT |
1.5 V ≤ VIN - VOUT ≤ 15 V, |
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0.2 |
% |
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(Note 1) |
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∆VIN |
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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 |
VIN - VOUT = 3.0 V, TA = 25° C |
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0.8 |
% |
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(Note 1) |
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∆IOUT |
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10 mA ≤ IOUT ≤ 1.0 A |
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• |
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1.0 |
% |
Dropout Voltage |
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VDO |
IOUT = 1.0 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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0.04 |
%/W |
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Ripple Rejection |
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∆VIN |
f = 120 Hz, CAdj = 25 µF, |
• |
60 |
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dB |
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∆VOUT |
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COUT = 25 µF (tantalum), IOUT = 1.0 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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10 mA ≤ IOUT ≤ 1.0 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 ≤ 1.0 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 |
• |
1.5 |
2.5 |
A |
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VIN - VOUT = 25 V |
• |
0.075 |
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A |
Temperature Stability |
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∆VOUT |
-55° C ≤ TJ ≤ +125° C |
• |
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1.5 |
% |
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(Note 2) |
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∆T |
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Long Term Stability |
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∆VOUT |
TA = +125° C, t = 1000 hrs |
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1.0 |
% |
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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 15 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.
3.33. The • denotes the specifications which apply over the full operating temperature range.
PART NUMBER DESIGNATOR
Standard Military Drawing Number |
Omnirel Part Number |
Package |
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5962-8998101Y |
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OM1860NHM |
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TO-39 |
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5962-8998101X |
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OM1860NKM |
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TO-3 |
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5962-8998101U |
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OM1860STM |
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TO-257 (Isolated) |
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Part Numbering System |
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Voltage Regulators |
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OM-1860-S-T-M |
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* Package Codes: |
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Company |
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K= TO-204AA (TO-3) |
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Screening |
H= TO-39 |
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Identification |
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Part |
Package |
M= MIL-M 38535 |
T= TO-257AA |
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Number |
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(see Package codes*) |
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S= Isolated
N= Non isolated
3.3 - 84