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| OM3957NMM OM3957SMM OM3957STM 1.3 AMP LOW DROPOUT 3.3 FIXED VOLTAGE R E G U L ATOR APPROVED TO SMD 5962-98590 Three Terminal, 3.3 Volt Positive Fixed Low Dropout Voltage Regulator In Hermetic JEDEC TO-257AA and Surface Mount Packages Please see mechanical outlines herein FEATURES * * * * * * * Similar To Industry Standard LT1086 -3.3 Approved To DS C C Standardized Military Drawing Number 5962-98590 Built In Thermal Overload Protection Short Circuit Current Limiting Available In Isolated Package Output Voltage Tolerance is Guaranteed To 1% Guaranteed Dropout Voltage At Multiple Current Levels DESCRIPTION This 3.3 volt fixed voltage regulator is designed to provide 1.3A of current with a higher e fficiency than conventional voltage regulators. This device is designed to operate down to 1 v l i p t t o t u d fferential and the 1.5V dropout voltage is guaranteed at the maximum ot nu o upt i output current. This device is ideally suited for those systems where high reliability, s a l s z ml ie and low weight are required. The isolated package simplifies the system assembly methods. ABSOLUTE MAXIMUM RATINGS @ 25C Input Votg .... .............................................. ..... 3 V lae . 0 Otu Cret . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 A upt urn . . Operating Junction Te p r t r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 t + 1 0 C meaue - 5C o 5 Storage Te p r t r R n e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 t + 1 0 C meaue ag - 5C o 5 Lead Te p r t r ( o d r n 1 s c n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 0 C meaue Sleig 0 eod) 0 Power Dissipation (Pd)............................ ... .......... Itral Lmtd nenly iie Thermal Resistance: qJC (sltd ..... .............................................. 42CW Ioae) ./ qJA .... ....................................................... 4/ 2CW Standard Military Drawing 5962-9859001MMA 5962-9859001M U A 5962-9859001MNA 9 01 R1 supersedes 8 07 R0 Part Number Designator Omnirel Part Number OM3957SMM OM3957STM OM3957NMM 33 - 1 . OM3957NMM OM3957SMM OM3957STM ELECTRICAL CHARACTERISTICS Parameter Output Voltage Symbol VO U T -55C TA 125C (unless otherwise specified) Min. 3.267 Max. 3.333 Unit V Test Conditions V IN = 5 0 V IO U T = 10 mA ., TA = 25 C 4.75 V 10 mA VIN IO U T 18 V, 1.3 A * 3.235 3.365 V Line Regulation (Note 1) Load Regulation (Note 1) OUT V IN V OUT V IO U T 4.5V VIN 4.5V 1 V IO U T = 0 A TA = 25 C 8, , VIN 1 V IO U T = 0 A 8, IO U T 1.3 A 10 mV * 12 15 mV V IN = 5 0 V 0 . ,A TA = 25 C V IN = 5 0 V 0 . ,A IO U T 1.3 A Dropout Voltage Thermal Regulation Ripple Rejection VD O IN V OUT V I U T = 1 3 A REF = 1% . ,V O 30 ms pulse, TA = +25 C f = 120 Hz, CAdj = 25 F, C O U T = 2 ( a t l m , IO U T = 1 3 A 5 F tnau) ., V IN = 6.3 V * * * 60 25 15 . 0.04 mV V %/W dB Quiescent Current CretLmt urn ii I Q I Lim V IN = 18 V V I = 8.3 V N V IN = 28.3 V * * * 10 13 . .050 25 . 15 . mA A A % Temperature Stability (Note 2) Long Term Stability (Note 2) OUT V T OUT V T -55 C TJ +125 C TA = +125 C, t = 1000 hrs 10 . % 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 13 W. Power dissipation is determined by the input/output differential voltage and the output current. Guaranteed maximum pwrdsiainwl ntb aalbeoe tefl iptotu vlaerne oe ispto il o e vial vr h ul nu/upt otg ag. 2 Guaranteed by design, characterization or correlation to other tested parameters. . 3 The * denotes the specifications which apply over the full operating temperature range. . OM3957NMM OM3957SMM OM3957STM OM3957STM MECHANICAL OUTLINE .420 .410 .200 .190 .045 .035 .665 .645 .537 .527 .430 .410 .038 MAX. 4 CONNECTION DIAGRAM .150 .140 .750 .500 .005 123 .035 .025 .100 TYP. .120 TYP. PIN OUT 1 2 3 4 Ground VO U T V IN Isolated NOTES * Case is metal/hermetically sealed * Isolated Tab OM3957SMM MECHANICAL OUTLINE .425 OM3957NMM MECHANICAL OUTLINE .140 .450 .100 .200 .140 .015 .050 .157 .140 .050 1 3 2 .035 WIDE FLAT 3 PLCS. .625 .415 .425 1 2 .030 MIN. 3 .350 MIN. .020 .115 .037 .160 .020 .375 .080 Front Pin 1 Pin 2 Pin 3 Tab - View Ground V IN VO U T Isolated Front Pin 1 Pin 2 Pin 3 - View V IN Ground VO U T 205 Crawford Street, Leominster, MA 01453 USA (978) 534-5776 FAX (978) 537-4246 Visit Our Web Site at www.omnirel.com THANK YOU FOR YOUR INTEREST IN OMNIREL'S PRODUCTS! 205 Crawford Street, Leominster, MA 01453 USA (978) 534-5776 FAX (978) 537-4246 Visit Our Web Site at www.omnirel.com |
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