OMR183 Series OMR184 Series OMR185 Series OMR186 Series 30 kRad - 100kRad RADIATION TOLERANT 7.5A, 5A, 3A, 1.5A LOW DROPOUT POSITIVE ADJUSTABLE REGULATORS 30 kRad - 100kRad Rad Tolerant LDO Positive Adjustable Voltage Regulators in Hermetic Packages Please see mechanical outlines herein FEATURES • • • • • • • Operates Down to 1V Dropout, 1.5V @ Max. Current .015% Line Regulation .01% Load Regulation 1% Reference Voltage Hermetic Isolated and Non-Isolated Packages Radiation Tolerant up to 150 kRad (Si) Available Hi-Rel Screened, Class B and Class S, MIL-STD-883 DESCRIPTION These three terminal positive adjustable voltage regulators are designed to provide 7.5A, 5A, 3A, and 1.5A with higher efficiency than conventional voltage regulators. The devices are designed to operate to 1 Volt input to output differential and the dropout voltage is specified as a function of load current. All devices are pin compatible with older three terminal regulators. These devices are ideally suited for Space applications where small size, high reliability, and radiation tolerance is required. The high level of Radiation Tolerance of these devices makes them a desirable choice for LEO and many MEO and GEO communication satellites. Radiation testing is performed on a single wafer by wafer basis. Random die samples per wafer are selected, packaged and radiation tested to qualify each individual semiconductor wafer-by-wafer. ABSOLUTE MAXIMUM RATINGS @ 25°C Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 V Operating Junction Temperature Range. . . . . . . . . . . . . . . . . . . . . - 55°C to + 150°C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65°C to + 150°C Output Current - OMR183SC, NM.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.5 A OMR184SC, NM.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 A OMR185ST, SR, NM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 A OMR186ST, SR, NM.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 A OMR186NH.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 A Lead Temperature (Soldering 10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300° C Surface Mount Package Soldering Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250° C Radiation Tolerant - Total Dose, OMR183, OMR184 . . . . . . . . . . . . . . . . . . .100k Rad (Si) Total Dose, OMR185 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50k Rad (Si) Total Dose, OMR186 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30k Rad (Si) Note: 0 02 R0 OMR183 and OMR184 products are packaged in the TO-258 or SMD-1 Packages (7.5A & 5A). OMR185 products are packaged in the TO-257, D2 Pac or SMD-1 Packages (3A). OMR186 products are packaged in the TO-257, D2 Pac or SMD-1 or TO-205 Packages (1.5A & 0.5A). OMR183- OMR186 Series ELECTRICAL CHARACTERISTICS (TC = 25°C unless otherwise noted) Parameter Conditions Reference Voltage IOUT = 10 mA, Tj = 25°C (VIN - VOUT) = 3 V Min. Typ. Max. Units 1.238 1.250 1.262 V 10mA ≤ IOUT ≤ IFULL LOAD 1.5 V ≤ (VIN - VOUT) ≤ 25 V (Note 3) Line Regulation Load Regulation 1.250 1.270 V ILOAD = 10 mA, 1.5 V ≤ (VIN - VOUT) ≤ 15 V, 1.220 0.015 0.2 % Tj = 25°C 0.035 0.2 % 15 V ≤ (VIN - VOUT) ≤ 35 V (Notes 1 & 2) 0.05 0.5 % 0.5 0.8 % (VIN - VOUT) = 3 V 10 mA ≤ IOUT ≤ IFULL LOAD Tj = 25°C (Notes 1, 2, 3) .8 1.0 % ∆VREF = 1%, IOUT = IFULL LOAD 1.3 1.5 V (VIN - VOUT) = 5 V 8.0 A (VIN - VOUT) = 25 V 0.4 A (VIN - VOUT) = 5 V 5.5 A (VIN - VOUT) = 25 V 0.3 A (VIN - VOUT) = 5 V 3.2 A (VIN - VOUT) = 25 V 0.2 A (VIN - VOUT) = 5 V 1.5 A (VIN - VOUT) = 25 V 0.75 A Minimum Load Current (VIN - VOUT) = 25 V 5 Thermal Regulation TA = 25°C, 30 ms pulse Dropout Voltage Current Limit OMR183 OMR184 OMR185 OMR186 OMR183 mA 0.002 0.01 %/W OMR184 0.003 0.15 %/W OMR185 0.004 0.02 %/W OMR186 0.010 0.05 %/W Ripple Rejection Guaranteed by design 10 f = 120 Hz CADJ = 25 µF Tantalum IOUT - IFULL LOAD (VIN - VOUT) = 3 V Adjust Pin Current TJ = 25°C Adjust Pin Current Change 10mA ≤ IOUT ≤ IFULL LOAD 60 75 dB 55 µA 1.5 V ≤ (VIN - VOUT) ≤ 25 V 0.2 Temperature Stability -55°C ≤ TJ ≤ +150°C 0.5 Long Term Stability TA = 125°C, 1000 Hrs. 0.3 Thermal Resistance Junction-to-Case 5 µA % 1 % TO-257, D2 Pac 4.2 °C/W TO-258 2.75 °C/W SMD-1 3.5 °C/W TO-205 17 °C/W Note 1: Load and line regulation are measured at a constant junction temperature by low duty cycle pulse testing. Note 2: Line and load regulation are guaranteed up to the maximum power dissipation (OMR183/60W, OMR184/45W, OMR185/30W, OMR186/15W). Power dissipation is determined by the input/output differential and the output current. Guaranteed maximum power dissipation will not be available over the full input/output voltage range. Note 3: IFULL LOAD curve is defined as the minimum value of current limit as a function of input to output voltage. Note that power dissipation is only achievable over a limited range of input to output voltage. Note 4: Dropout voltage is specified over the full output current range of the device. Note 5: Refer to curves for typical characteristics versus total dose radiation levels. OMR183- OMR186 Series OMNIREL’S RADIATION TEST PROCEDURE • • • • • • • Radiation Testing is performed on a single wafer by wafer basis. Each wafer is identified and a random sample of 5 die per wafer is selected. The die are then individually assembled in a hermetic package, data logged, electrically tested, hi-rel screened and then submitted to radiation testing. The packaged die are submitted to Steady State Total Dose radiation per Method 1019, Condition A, at a dose rate of 50 RAD/sec biased at maximum supply voltage. Final electrical test is performed within two hours of both Total Dose Radiation level from a Cobalt 60 source and 168 hr, 100°C annealing process. Read and record data including two non-radiated control samples. The wafer is then qualified only if samples from wafers meet full electrical specifications after 150% of total dose rating as specified in each product data sheet. Omnirel’s controlling specifications are as follows: For Voltage Regulators the controlling specification is MIL-PRF- 38534/MIL-STD-883. For Rectifiers/Schottky the controlling specification is MIL-PRF-19500/MIL-STD-750. AVAILABLE PRODUCT SCREENING Standard Class Level Screening Per MIL-PRF-38535 Screen Wafer Lot Acceptance Non-destructive Bond Pull Pre-Cap Visual Inspection Temperature Cycle Constant Acceleration Visual Inspection PIND Test Serialization Pre-Burn-In Electrical Burn-In Interim Electrical PDA Calculations Final Electrical Fine & Gross Seal Radiographic Conformance Inspection** Final Visual Inspection *Level B *Level S Test Method Required Test Method Required --------2010 1010 2001 ------------Data Sheet 1015/160 hrs. ----5% Functional Data Sheet 1014 ----GR A 2009 --------100% 100% 100% 100% --------100% 100% ----Lot 100% 100% ----100% Sample 5007 ----2010 1010 2001 ----2020 ----Data Sheet 1015/240hrs. Data Sheet 5% Functional Data Sheet 1014 2012/Two Views GR A 2009 100% ----100% 100% 100% 100% 100% 100% 100% 100% 100% Lot 100% 100% 100% 100% Sample *Note: For “B” Level Screening add “M” to part number, for “S” Level Screening add “S” to part number. See Part Number Designator. **Note: Additional conformance inspection testing i.e. Group B, C, & D optional. OMR183- OMR186 Series OMR183 Dropout Voltage OMR183 Short Circuit Current 1 TJ = 25°C 0.10 TJ = 25°C 10 TJ = 150°C 8 6 TJ = -55°C 4 IFULL LOAD 2 0 0 1 2 3 4 5 6 7 8 9 10 0 OMR184 Dropout Voltage 1 TJ = 25°C 0 1 2 3 4 5 6 10 9 8 6 6 5 25 30 4 3 2 1 0 OMR184 Load Regulation TJ = 25°C TJ = -55°C IFULL LOAD 0 5 10 15 20 25 I = 5A 30 0.05 0 -0.05 -0.10 -0.15 -0.20 -50 -25 0 25 50 75 100 125 150 Temperature (°C) 35 OMR185 Short Circuit Current OMR185 Load Regulation TJ = 25°C 0.10 5 Output Voltage Deviation (%) 6 1 TJ = 150°C 4 TJ = 25°C 3 TJ = -55°C 2 1 IFULL LOAD 1 2 3 0 4 5 10 15 20 25 30 35 Input/Output Differential (V) OMR186 Dropout Voltage -0.10 -0.15 TJ = 25°C 0.10 2.5 Output Voltage Deviation (%) Short Circuit Current (A) 1 TJ = 150°C 2.0 TJ = 25°C 1.5 1 TJ = -55°C .5 IFULL LOAD Output Current (A) -0.05 OMR186 Load Regulation 3.0 1 0 OMR186 Short Circuit Current 2 0 I = 3A 0.05 -0.20 -50 -25 0 25 50 75 100 125 150 Temperature (°C) 0 0 Output Current (A) 0 -0.15 -0.20 -50 -25 0 25 50 75 100 125 150 Temperature (°C) 35 TJ = 150°C OMR185 Dropout Voltage 2 0 -0.10 Input/Output Differential (V) Short Circuit Current (A) Minimum Input/Output Differential (V) 20 -0.05 0.10 Output Current (A) Minimum Input/Output Differential (V) 15 0 OMR184 Short Circuit Current 2 0 10 Input/Output Differential (V) Short Circuit Current (A) Minimum Input/Output Differential (V) Output Current (A) 5 I = 7.5A 0.05 Output Voltage Deviation (%) 0 OMR183 Load Regulation 12 Output Voltage Deviation (%) 2 Short Circuit Current (A) Minimum Input/Output Differential (V) TYPICAL PERFORMANCE CHARACTERISTICS 2 0 0 5 10 15 20 25 30 Input/Output Differential (V) 35 I = 3A 0.05 0 -0.05 -0.10 -0.15 -0.20 -50 -25 0 25 50 75 100 125 150 Temperature (°C) OMR183- OMR186 Series APPLICATION NOTES Stability The OMR183-186 Series requires the use of an output capacitor as part of the device frequency compensation. For all operating conditions, the addition of 150µF aluminum electrolytic or a 22µF solid tantalum on the output will ensure stability. Normally, capacitors much smaller than this can be used. Many different types of capacitors with widely varying characteristics are available. These capacitors differ in capacitor tolerance (sometimes ranging up to ±100%), equivalent series resistance, and capacitance temperature coefficient. The 150µF or 22µF values given will ensure stability. When the adjustment terminal is bypassed to improve the ripple rejection, the requirement for an output capacitor increases. The values of 22µF tantalum or 150µF aluminum cover all cases of bypassing the adjustment terminal. Without bypassing the adjustment terminal, smaller capacitors can be used with equally good results and the table below shows approximately what size capacitors are needed to ensure stability. Normally, capacitor values on the order of 100µF are used in the output of many regulators to ensure good transient response with heavy load current changes. Output capacitance can be increased without limit and larger values of output capacitor further improve stability and transient response of the OM183SC regulators. Output Voltage — Adjustable Regulators The OMR183-OM186 devices develop a 1.25V reference voltage between the output and the adjust terminal (see below). By placing a resistor, R1, between these two terminals, a constant current is caused to flow through R1 and down through R2 to set the overall output voltage. Normally this current is the specified minimum load current of 10mA. Because IADJ is very small and constant when compared with the current through R1, it represents a small error and can usually be ignored. Recommended Capacitor Values Input Output Adjustment 10µF 10µF Tantalum, 50µF Aluminum None 10µF 22µF Tantalum, 150µF Aluminum 20µF Basic Adjustable Regulator RADIATION TEST PROGRAM The following chart is a summary of the test data collected on Radiation Tolerant OMR183-186 series at various doses. The chart depicts the Total Radiation Dose that each device was exposed to on a step stress irradiation basis prior to failure. Failure is defined as any electrical test that does not meet the limits of the device per the published data sheet specifications after radiation testing. Omnirel P/N 5K 10K 20K 30K 50K 60K 70K 80K 100K 150K 200K RAD OMR183 X Test Points X X X X OMR184 X Test Points OMR185 Test Points X X X X X X X X X X X X OMR186 Test Points X OMR183- OMR186 Series TYPICAL RADIATION CURVES OMR183- OMR186 Series TYPICAL RADIATION CURVES OMR183- OMR186 Series MECHANICAL OUTLINES “H” P/N DESIGNATOR “T” P/N DESIGNATOR 1 2 3 TO-257AA OMR18XST Isolated/Front View Pin 1 Pin 2 Pin 3 Tab - TO-205AF (TO-39) OMR18XNH Non-Isolated Adjust Output Input Isolated Add “T” to part number for TO-257 Package Pin 1 Input Pin 2 Adjust Pin 3 Output (Case) Add “H” to part number for TO-205 Package “M” P/N DESIGNATOR “R” P/N DESIGNATOR 2 1 1 2 3 3 OMR18XNM Hermetic D2 Pac OMR18XSR Isolated SMD-1 Front View Pin 1 - Adjust Pin 2 - Output Pin 3 - Input Tab - Isolated Add “R” to part number for D2 Pac Package Add “M” to part number for SMD (Surface Mount Package) PART NUMBER DESIGNATOR (Example OMR186STM) 186 S T OMR Omnirel Rad-Tolerant Pin 1 - Input Pin 2 - Adjust Pin 3 - Output Device Type Isolated Package Package Style M Screening Level 205 Crawford Street, Leominster, MA 01453 USA (978) 534-5776 FAX (978) 537-4246 Visit Our Web Site at www.omnirel.com