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| OM1830SCM OM1830NCM 7.5 AMP LOW DROPOUT POSITIVE ADJUSTABLE REGULATOR APPROVED TO DESC DRAWING 5962-89520 Three Terminal, Positive Adjustable Low Dropout Voltage Regulator In Hermetic JEDEC TO-258AA Package FEATURES * * * * * * * * * Similar To Industry Standard LT1083 Approved To DESC Standardized Military Drawing Number 5962-8952001Y Adjustable Output Voltage Built In Thermal Overload Protection Short Circuit Current Limiting Available In Isolated Package Maximum Output Voltage Tolerance is Guaranteed To 1% Guaranteed Dropout Voltage At Multiple Current Levels Product Also Available in Non-Isolated Package DESCRIPTION This three terminal positive adjustable voltage regulator is designed to provide 7.5A 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 package, 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: qJC (Isolated) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.75C/W qJC (Non-Isolated) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.3C/W Maximum Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.5 A 3.3 4 11 R1 Supersedes 1 06 R0 3.3 - 69 OM1830SCM OM1830NCM 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 OE= 3.0 V, IOUT = 10 mA, TA = 25 C 1.5 V VIN - VOUT OE 25 V, * 1.225 1.270 V 10 mA IOUT 5.0 A Line Regulation (Note 1) VOUT VIN 1.5 V VIN - VOUT OE 15 V, 0.2 % IOUT = 10 mA, TA = 25 C 15 V VIN - VOUT OE 35 V, IOUT = 10 mA * 0.5 % Load Regulation (Note 1) VOUT IOUT VIN - VOUT OE= 3.0 V, TA = 25 C 10 mA IOUT 5.0 A 0.3 % Dropout Voltage Thermal Regulation Ripple Rejection VDO VIN VOUT IOUT = IFL, IFL = 5.0 A, VREF = 1% 30 ms pulse, TA = +25 C f = 120 Hz, CAdj = 25 F, COUT = 25 F (tantalum), IFL = 5.0 A, VIN - VOUT OE= 3.0 V, IOUT = IFL * * * 60 0.4 1.5 0.01 % V %/W dB Adjust Pin Current IAdj 1.5 V VIN - VOUT OE 25 V * * * * * * 120 A 10 mA IOUT 5.0 A Adjust Pin Current Change IAdj 1.5 V VIN - VOUT OE 25 V 5.0 A 10 mA IOUT 5.0 A Miminum Load Current Current Limit IMin ILim VIN - VOUT OE= 25 V VIN - VOUT OE= 5.0 V VIN - VOUT OE= 25 V Temperature Stability (Note 2) Long Term Stability (Note 2) VOUT T VOUT T TA = +125 C, t = 1000 hrs 1.0 % -55 C TJ +125 C 10 8.0 0.4 1.5 mA A A % 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 60 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. 3.3 2. Guaranteed by design, characterization or correlation to other tested parameters. 3. The * denotes the specifications which apply over the full operating temperature range. PART NUMBER DESIGNATOR Standard Military Drawing Number Omnirel Part Number 8952001Y OM1830SCM 8952001Z OM1830NCM "Y" = Isolated 3.3 - 70 OM1830SCM OM1830NCM TYPICAL PERFORMANCE CHARACTERISTICS LOAD REGULATION 0.10 12 I= 7.5A 10 25C 8 6 -55C 4 I FULL LOAD 2 150C SHORT CIRCUIT CURRENT SHORT CIRCUIT CURRENT (A) 150 OUTPUT VOLTAGE DEVIATION (%) 0.05 0 -0.05 -0.10 -0.15 -0.20 -50 -25 0 25 50 75 100 125 0 0 5 10 15 20 25 30 35 TEMPERATURE (C) INPUT/OUTPUT DIFFERENTIAL (V) MINIMUM INPUT/OUTPUT DIFFERENTIAL (V) 100 90 ADJUSTMENT PIN CURRENT 2 DROPOUT VOLTAGE * INDICATES GUARANTEED TEST POINT -40C Tj 150C 0C Tj 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 5 6 7 8 9 10 OUTPUT CURRENT (A) TEMPERATURE STABILITY 1.270 MINIMUM OPERATING CURRENT 10 9 MINIMUM OPERATING CURRENT 3.3 REFERENCE VOLTAGE (V) 1.260 8 7 6 5 4 3 2 1 Tj = -55C 0 5 10 15 20 25 30 35 Tj = 25C Tj = 150C 1.250 1.240 1.230 -50 -25 0 25 50 75 100 125 150 TEMPERATURE (C) 0 INPUT/OUTPUT DIFFERENTIAL (V) 3.3 - 71 OM1830SCM OM1830NCM TYPICAL APPLICATIONS TYPICAL APPLICATIONS Parelleling Regulators VIN IN OM183 OUT ADJ VOUT =1.25 2 FEET #18 WIRE* R2 __ (1+ R1) Improving Ripple Rejection VIN 10F + VIN OM183 VOUT ADJ R2 365 1% R1 1211% V 16.5V VIN OUT 16.5V 0.015 IOUT = OA TO 15A 0.015 150F + C1 IN OM183 OUT ADJ R1 120 R2 * THE #18 WIRE ACTS AS BALLAST RESISTENCE INSURING CURRENT SHARING BETWEEN BOTH DEVICES. 10F* *C1 IMPROVES RIPPLE REJECTION. X C SHOULD BE ~ R1 AT RIPPLE FREQUENCY. 1.2V - 15V Adjustable Regulator VIN OM183 VOUT ADJ + 5V Regulator with Shutdown VIN VIN OM183 VOUT R1 121 VOUT + ADJ C2 100F TTL + 121 1% + 5V C1 10F R2 5k 10F 2N3904 1k 1k 365 1% 100F *NEEDED IF DEVICE IS FAR FROM FILTER CAPACITORS R2 __ VOUT=1.25V 1+ R1 ( ) MECHANICAL OUTLINE .695 .685 .270 .240 .045 .035 CONNECTION DIAGRAM .165 .155 3.3 .835 .815 .707 .697 .550 .530 .092 MAX. .750 .500 .065 .055 .140 TYP. .005 .200 TYP. 1 2 3 NOTES * Case is metal/hermetically sealed * Isolated Tab PIN OUT 1 Adjust 2 VOUT 3 VIN 205 Crawford Street, Leominster, MA 01453 USA (508) 534-5776 FAX (508) 537-4246 |
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