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| OM1850NKM OM1850STM OM1850NMM 3 AMP LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR APPROVED TO DESC DRAWING 5962-88646 Three Terminal, Positive Adjustable Low Dropout Voltage Regulator In Hermetic Packages See Mechanical Outline FEATURES * * * * * * * Similar To Industry Standard LT1085 Approved To DESC Standardized Military Drawing Number 5962-88646 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 DESCRIPTION This three terminal positive adjustable voltage regulator is designed to provide 3.0A 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, SMD-1 or TO-3 packages, this device is ideally suited for Military applications where small size and high reliability is required. ABSOLUTE MAXIMUM RATINGS @ 25C Power Dissipation (Pd) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited Input - Output Voltage Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 V Operating Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . - 55C to + 150C Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65C to + 150C Lead Temperature (Soldering 10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300C Thermal Resistance: JC (SMD-1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5C/W JA (SMD-1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5C/W JC (TO-257) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2C/W JA (TO-257). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42C/W JC (TO-3). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0C/W JA (TO-3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35C/W Maximum Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0 A Recommended Operating Conditions: Output Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.3V to 15 V Ambient Operating Temperature Range (TA). . . . . . . . . . . . . . . . . . . - 55C to + 125C Input Voltage Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V to 25 V a 1 08 R4 Supersedes 0 03 R3 3.3 - 79 3.3 OM1850STM OM1850NMM OM1850NKM ELECTRICAL CHARACTERISTICS Parameter Reference Voltage Symbol VREF -55C TA 125C (unless otherwise specified) Min. 1.238 Max. 1.262 Unit V Test Conditions VIN - VOUT = 3.0 V, TA = 25 C IOUT = 10 mA 1.5 V VIN - VOUT 25 V, 10 mA IOUT 2.0 A * 1.220 1.270 V Line Regulation (Note 1) VOUT VIN 1.5 V VIN - VOUT 15 V, IOUT = 10 mA, TA = 25 C 15 V VIN - VOUT 35 V, IOUT = 10 mA 0.2 % * 0.5 % Load Regulation (Note 1) VOUT IOUT VIN - VOUT = 3.0 V, TA = 25 C 10 mA IOUT 2.0 A IOUT = 2.0 A, VREF = 1% 30 ms pulse, TA = +25 C f = 120 Hz, CAdj = 25 F, COUT = 25 F (tantalum), IOUT = 2.0 A, VIN - VOUT = 3.0 V 1.5 V VIN - VOUT 25 V, 10 mA IOUT 2.0 A 1.5 V VIN - VOUT 25 V, 10 mA IOUT 2.0 A VIN - VOUT = 24 V VIN - VOUT 5.0 V VIN - VOUT = 25 V -55 C TJ +125 C 0.8 % Dropout Voltage Thermal Regulation Ripple Rejection VDO VIN VOUT * * * 60 1.0 1.5 0.02 % V %/W dB Adjust Pin Current IAdj IAdj * * * * * * 120 A Adjust Pin Current Change 5.0 A Miminum Load Current Current Limit IMin ILim VOUT T VOUT T 10 3.2 0.2 1.5 mA A A % Temperature Stability (Note 2) Long Term Stability (Note 2) Notes: TA = +125 C, t = 1000 hrs 1.0 % 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 SMD # 5962-8864601U 5962-8864601N 5962-8864601X Part Number Designator Omnirel OM1850STM OM1850NMM OM1850NKM Part Numbering System Voltage Regulators Package TO-257 (Isolated) SMD-1 (Non-Isolated) TO-3 * Package Codes: OM-1850-S-T-M Company Identification Part Number K= TO-204AA (TO-3) M= SMD-1 T= TO-257AA Screening M= MIL-M 38535 Package (see Package codes*) S= Isolated N= Non isolated 3.3 - 80 OM1850STM OM1850NMM OM1850NKM TYPICAL PERFORMANCE CHARACTERISTICS LOAD REGULATION 0.10 I=3A I =3 6 5 SHORT CIRCUIT CURRENT OUTPUT VOLTAGE DEVIATION (%) 0.05 0 -0.05 -0.10 -0.15 -0.20 -50 SHORT CIRCUIT CURRENT (A) 4 25C 3 2 1 0 -55C I FULL LOAD 150C -25 0 25 50 75 100 125 150 0 5 10 15 20 25 30 35 TEMPERATURE (C) INPUT/OUTPUT DIFFERENTIAL (V) 100 90 ADJUSTMENT PIN CURRENT MINIMUM INPUT/OUTPUT DIFFERENTIAL (V) 2 DROPOUT VOLTAGE * INDICATES GUARANTEED TEST POINT -55C j j 150C 55C TT 150C T 125C 0C Tj j 125C ADJUSTMENT PIN CURRENT (A) 80 70 60 50 40 30 20 10 0 -50 -25 0 25 50 75 100 125 150 TEMERATURE (C) 1 Tj = 25C Tj = 150C Tj = -55C 0 0 1 2 3 4 OUTPUT CURRENT (A) TEMPERATURE STABILITY 1.270 MINIMUM OPERATING CURRENT 10 MINIMUM OPERATING CURRENT (mA) 9 8 7 6 5 4 3 2 1 0 0 5 10 Tj = -55C 15 20 25 30 35 Tj = 25C Tj = 150C 3.3 REFERENCE VOLTAGE (V) 1.260 1.250 1.240 1.230 -50 -25 0 25 50 75 100 125 150 TEMPERATURE (C) INPUT/OUTPUT DIFFERENTIAL (V) 3.3 - 81 OM1850STM OM1850NMM OM1850NKM TYPICAL APPLICATIONS 1.2V - 15V Adjustable Regulator 5V Regulator with Shutdown VIN OM1850 VOUT ADJ + R1 121 VOUT VIN VIN OM1850 VOUT + ADJ C2 100F TTL + 121 1% + 5V C1 10F R2 5k 10F 2N3904 1k 1k 100F 365 1% *NEEDED IF DEVICE IS FAR FROM FILTER CAPACITORS R2 __ VOUT=1.25V 1+ R1 ( ) MECHANICAL OUTLINES SMD-1 .200 .190 .045 .035 TO-257AA .420 .410 4 .140 .015 .075 .140 .140 .075 .150 .140 .665 .645 .537 .527 .430 .410 .038 MAX. .157 1 2 .030 MIN. 123 .415 3 .750 .500 .005 .062 .375 .035 .025 .100 TYP. .120 TYP. SIDE VIEW SMD-1 BOTTOM VIEW PIN OUT OM1850NMM 1 VIN 2 Adjust 3 Output TO-257AA OM1850STM 1 2 3 4 PIN OUT Adjust VOUT VIN Isolated NOTES * Case is metal/hermetically sealed * Isolated Tab TO-3 1.53 REF. 0.875 MAX. 0.135 MAX. 0.450 0.250 0.312 MIN. SEATING PLANE 0.043 0.038 2 PLCS. 0.225 0.205 0.161 0.151 0.525 R. MAX. 1.197 1.177 0.675 0.655 0.440 0.420 3.3 0.188 R. MAX. OM1850NKM PIN OUT 1 2 Case Adjust VIN VOUT |
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