absolute maximum ratings symbol parameter value units i o output current 3.5 a v in input voltage +7.0 v vout output voltage range +4.1 to +5.1 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 200 krad(si) ultra low dropout OMR9805SC adjustable linear regulator omr9805sf hermetic package + 5.0vin / +4.1 to +5.1vout @ 3.0a www.irf.com 1 product summary part number dropout i o v in package OMR9805SC 0.4 v 3.0a 5.0v mo-078aa omr9805sf 0.4 v 3.0a 5.0v 8-lead flatpack features: n total dose and low dose capabilitiy to 200 krad(si) allows use in space applications n ultra low dropout voltage of 0.4 volt signifi cantly 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 omr9805 is a radiation hardened, ultra low dropout adjustable linear regulator designed specifically for space applications. this product has been characterized to a total ionizing dose of 200 krad (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 requiring low noise and higher efficiency. mo-078aa pd-94488a 8/20/02
2 www.irf.com OMR9805SC, omr9805sf electrical characteristics @ t a = 25c (unless otherwise specified) electrical characteristics t a = -55 to +125c parameter conditions symbol min. typ. max unit input voltage range- operating io= 3.0a 4.5 6.5 v reference voltage vref 1.252 1.265 1.305 v 4.75 vin 5.25, io= 3.0a -100 +100 mv 4.5 vin 5.5, io= 50ma -5 +5 mv vin= 5.0v 10ma iout 3.0a dropout voltage io= 3.0a. vin= 5.0v vdrop 0.4 v current limit vin= 5.0v, 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 1.6 v vin= 5.0v, io= 50ma, shdn= +5.0v line regulation vline load regulation vload -20 +20 mv output voltage at shutdown vout (shdn) -0.1 +0.1 v parameter conditions symbol min. typ. max unit input voltage range- operating io= 3.0a 4.5 5.5 v reference voltage vref 1.225 1.265 1.305 v 4.75 vin 5.25, io= 3.0a -150 +150 mv 4.5 vin 5.5, io= 50ma -150 +150 mv vin= 5.0v 10ma iout 3.0a dropout voltage io= 3.0a. vin= 5.0v vdrop 0.4 v current limit vin= 5.0v, 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= 5.0v, io= 50ma, shdn= +5.0v +150 mv output voltage at shutdown vout (shdn) -0.1 +0.1 v line regulation vline load regulation vload -150 shutdown vin vout ground drive gnd adjust simplified schematic
www.irf.com 3 OMR9805SC, omr9805sf omr9805 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 omr9805 vout adj vin shdn gnd 100uf 16v tantalum 1.0uf ceramic x7r 220uf 6.3v tantalum adjust resistor r1 vout = vref x (1+r1/1000) in order to maintain regulation and stability speci- fied additional input and output bulk capacitors are recommended. capacitors recommended above should be low esr tantalums with tolerances of +/- 20% max. internal 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 apply- ing a voltage >1.6v to pin 4. the regulator will restart when the shdn pin is pulled below the shutdown threshold of 1.0v. if remote shutdown is not required, pin 4 shold be connected to gnd to insure a safe ?off? state.
4 www.irf.com OMR9805SC, omr9805sf 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 adjust 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 adjust 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 OMR9805SC, omr9805sf part number nomenclature om r 9805 x x x omnirel radiation device s=isolated package screening hardened/tolerant n=non-isolated test/inspection mil-std-883 class h class k method (space level) pre seal burn-in optional optional 1030 nondestructive bond pull n/a 100% 2023 internal visual 100% 100% 2017 temperature cycle 100% 100% 1010 constant acceleration 100% 100% 2001 mechanical shock 100% 100% 2002 pind n/a 100% 2020 pre burn-in electrical optional 100% burn-in 100% 100% 1015 final electrical 100% 100% seal 100% 100% 1014 radiographic n/a 100% 2012 external visual 100% 100% 2009 screening level mil-prf-38534 screening requirements part number package description screening OMR9805SCp mo-078aa 5 - lead 100% final electrical OMR9805SCh mo-078aa 5 - lead class h per mil-prf-38534 OMR9805SCk mo-078aa 5 - lead class k per mil-prf-38534 omr9805sfp 8 -lead flat pack 100% final electrical omr9805sfh 8 -lead flat pack class h per mil-prf-38534 omr9805sfk 8 -lead flat pack class k per mil-prf-38534 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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