absolute maximum ratings symbol parameter value units i o output current 3.5 a v in input voltage +8.0 v p tot power dissipation tc=25 o c 19 w r thjc thermal resistance, junction to case (mo-078aa) 6.5 c/w r thjc thermal resistance, junction to case (8 lead flatpack) 6.5 c/w t j operating junction -55 to +125 o c t stg storage temperature range -65 to +150 o c t l lead temperature 300 o c www.irf.com 1 product summary part number dropout i o vin vout package omr9603sc 0.4 v 3.0a 7.4v 6.8v mo-078aa OMR9603SF 0.4 v 3.0a 7.4v 6.8v 8-pin flatpack features: n total dose and low dose capabilitiy to 1m rad(si) allows use in space applications n ultra low dropout of 0.4 volt significantly reduces power consumption n low noise, higher efficiency n remote shutdown permits power sequencing to be easily implemented n hermetic mo-078aa (to-258aa) and 8- lead flat pack ensure higher reliability n k-level screened the omr9603 is a radiation hardened, ultra low dropout linear regulator designed specifically for space applica- tions. this product has been characterized to a total ioniz- ing dose of 1 m rad (si) per mil-std-883, method 1019, condition a at both high and low dose rates under biased and unbiased conditions to account for eldrs effects in bipolar devices. the ultra low dropout voltage of 0.4v @ 3a makes the part particularly useful for applications re- quiring low noise and higher efficiency. mo-078aa pd-94477a 8/20/02 1 m rad(si) ultra low dropout omr9603sc linear regulator OMR9603SF hermetic package + 7.4vin to +6.8vout at 3.0a
2 www.irf.com omr9603sc, OMR9603SF electrical characteristics @ t a = 25c (unless otherwise specified) electrical characteristics t a = -55 to +125c shutdown vin vout ground drive gnd parameter conditions symbol min. typ. max unit output voltage vin= 7.4v, io= 3.0a vout 6.732 6.8 6.868 v input voltage range- operating io= 3.0a 7.2 8.0 v 7.1 vin 7.7, io= 3.0a -100 +100 mv 6.7 vin 8.1, io= 50ma -5 +5 mv vin= 7.4v 10ma iout 3.0a dropout voltage io= 3.0a. vout= 6.8v vdrop 0.4 v current limit vin= 7.4v, overcurrent latchup ilatch 3.0 a ripple rejection f= 120 hz., vout= vref 65 db shutdown source current vshdn= 5v ishdn 200 ua shutdown pin threshold isource= 200ua vshdn 1.0 1.6 v vin= 7.4v, io= 50ma, shdn= +5.0v 20 mv output voltage at shutdown vout (shdn) -0.1 +0.1 v line regulation vline load regulation vload -20 parameter conditions symbol min. typ. max unit output voltage vin= 7.4v, io= 3.0a vout 6.46 6.8 7.14 v input voltage range- operating io= 3.0a 7.2 8 v 7.1 vin 7.7, io= 3.0a -150 +150 mv 6.7 vin 8.1, io= 50ma -150 +150 mv vin= 7.4v 10ma iout 3.0a dropout voltage io= 3.0a. vout= 6.8v vdrop 0.4 v current limit vin= 7.4v, overcurrent latchup ilatch 3 a ripple rejection f= 120 hz., vout= vref 65 db shutdown source current vshdn= 5v ishdn 200 ua shutdown pin threshold isource= 200ua vshdn 1 1.6 v vin=7.4v, io= 50ma, shdn= +5.0v line regulation vline load regulation vload -150 +150 mv output voltage at shutdown vout (shdn) -0.1 +0.1 v simplified schematic
www.irf.com 3 omr9603sc, OMR9603SF omr9603 ripple rejection vs. frequency 0 20 40 60 80 100 120 100 1,000 10,000 100,000 1,000,000 frequency (hz) (db) 3a 1.5a .75a .50a 220uf 6.3v tantalum omr9603 vout vin shdn gnd 100uf 16v tantalum 1.0uf ceramic x7r vin vout ground in order to maintain regulation and stability specified additional input and output bulk capacitors are recom- mended. capacitors recommended above should be low esr tantalums with tolerances of +/- 20% max. in- ternal to the product are a 4.7uf input capacitor and a 4.7uf output capacitor in parallel with a 0.33uf ceramic capacitor. shutdown: the regulator can be shutdown by ap- plying a voltage >1.6v to pin 4. the regulator will restart when the shdn pin is pulled below the shut- down threshold of 1.0v. if remote shutdown is not required, pin 4 shold be connected to gnd to in- sure a safe ?off? state.
4 www.irf.com omr9603sc, OMR9603SF 1 2 3 4 5 base base: glidcop pins: copper core, alloy 52 seals: glass pin connections terminal description 1 vin 2 gnd 3 vout 4 shutdown 5 no connection base: 1010-1018 c.r.s. pins: #52 alloy, copper cored seals : glass ? 9013 or equiv. finish: 100-250 microinches electroless nickel over 50-250 microinches electrolytic nickel. pin connections terminal description 1,2 gnd 3 shutdown 4 no connection 5,6 vout 7,8 vin mechanical outline mo-078aa mechanical outline 8-lead flat pack 0.755 0.745 0.755 0.745 0.225 0.305 0.295 0.105 0.095 0.020 0.016 0.180 0.165 8x 0.040 0.065 0.040 0.065 8x 0.080 0.070 8x 0.110 0.150 1 2 3 4 8 7 6 5
www.irf.com 5 omr9603sc, OMR9603SF part number nomenclature om r 9603 x x x omnirel radiation device s=isolated package screening hardened/tolerant n=non-isolated part number package description screening omr9603scp mo-078aa 5 - lead 100% final electrical omr9603sck mo-078aa 5 - lead class k per mil-prf-38534 OMR9603SFp 8 -lead flat pack 100% final electrical OMR9603SFk 8 -lead flat pack class k per mil-prf-38534 test/inspection screening level mil-std-883 class k method (space level) pre seal burn-in optional 1030 nondestructive bond pull 100% 2023 internal visual 100% 2017 temperature cycle 100% 1010 constant acceleration 100% 2001 mechanical shock 100% 2002 pind 100% 2020 pre burn-in electrical 100% burn-in 100% 1015 final electrical 100% seal 100% 1014 radiographic 100% 2012 external visual 100% 2009 mil-prf-38534 screening requirements world headquarters: 233 kansas st., el segundo, california 90245, tel: (310) 2527105 ir leominster: 205 crawford st., leominster, massachusetts 01453, tel: (978) 5345776 data and specifications subject to change without notice. 8/2002
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