ultra low dropout, 7.0a adjustable positive linear regulator 5962 - 0323701mya thru-hole (mo-078aa) www.irf.com 1 08/06/03 mo-078aa o m 7 5 8 0 s c description product summary part number output voltage current dropout OM7580SC +1.5v to +5.5v 7.0a 0.54v features: dropout voltage of 540mv at full load dropout voltage of 100mv at light loads fast transient response adjustable output: 1.8 to 5.5v remote sense hermetic mo-078aa package ensures high reliability the OM7580SC is a 7.0a, ultra low dropout, adjust- able linear regulator specifically designed for low voltage, high current applications. housed in a her- metic package, the dropout of this device is 540mv at full load and as low a 100mv at light loads. the low dropout is achieved by an additional low cur- rent input voltage. this unit is ideally suited for mili- tary/defense, commercial aircraft, industrial control and other harsh environments where a hermetically sealed package is required. absolute maximum ratings parameter symbol value units output currrent i o 7.0 a power input voltage v pwr 6.0 control input voltage v ctrl 13 power dissipation @ tc = 25c p d 20 w thermal resistance, junction to case r jc 5.0 c/w operating junction temperature range t j -55 to +125 storage temperature range t stg -65 to +150 c lead temperature soldering (10second maximum) t l 300 v pd - 94743
2 www.irf.com OM7580SC footnotes - denotes specifications which apply over the full operating temperature range. - the minimum load current is minimum current required to maintain regulation. normally the current in the resistor divider used to set the output voltage is selected to meet the minimum load current requirement. - the control pin current is the drive current required for the output transistor. the control pin current is approximately 0.01% output current. the minimum value is equal to quiescent current of the device. electrical characteristics @t a = 25c (unless otherwise specified) parameter test conditions min. typ. max. units reference voltage v ctrl = 2.7v, v pwr = 2.0v, i load = 10ma 1.243 1.250 1.257 v adj = 0v v ctrl =2.7 to 12v, v pwr =1.75v to 5.5v, i load =10ma to 6.0a 1.237 1.250 1.263 line regulation v ctrl = 2.5 to 12v, v pwr = 3.0v to 5.5v, i load = 1.0ma -- 1.0 3.0 load regulation v ctrl = 2.75v, v pwr = 2.1v, i load = 10ma to 6.0a -- 1.0 5.0 minimum load current v ctrl = 5.0v, v pwr = 3.3v, v adj = 0v -- 5.0 10 ground pin current v ctrl = 5.0v, v pwr = 3.3v, i load = 0ma -- 6.0 10 v ctrl = 2.75v, v pwr = 2.05v, i load = 7.0a, tj = 25c -- -- 120 ma v ctrl = 2.75v, v pwr = 2.05v, i load = 7.0a, tj = 125c -- -- 120 v ctrl = 2.75v, v pwr = 2.05v, i load = 6.0a, tj = -55c -- -- 130 adjust pin current v ctrl = 2.75v, v pwr = 2.05v, i load = 10ma -- 50 120 a v adj = 0v v ctrl = v pwr = 5.0v (avg), v ripple = 1.0v p-p , f= 120hz 60 80 -- db i out = 4.0a tj = 25c v ctrl = 2.75v, v pwr = 2.05v, ? v out = 100mv, tj = 25c 7.1 8.0 -- v ctrl =2.75v, v pwr =2.05v, ? v out =100mv, tj=-55c & tj=+125c 6.6 -- -- v pwr = 3.3v, i load = 7.0a, tj = 25c -- -- 1.33 v pwr = 3.3v, i load = 7.0a, tj = 125c -- -- 1.33 v pwr = 3.3v, i load = 6.0a, tj = -55c -- -- 1.35 v ctrl = 2.75v, i load = 7.0a, tj = 25c -- -- 0.62 v ctrl = 2.75v, i load = 7.0a, tj = 125c -- -- 0.80 v ctrl = 2.75v, i load = 6.0a, tj = -55c -- -- 0.80 thermal regulation v pwr = 5.0v, i o = 7.0a, p d 20w, pulse width = 30ms -- -- 0.02 %/w dropout is caused by either minimum control voltage or minimum power voltage. both dropout voltage parameters are specified with respect to the output voltage. the specifications represent the minimum input/output voltage required to maintain 1% regulation. v minimum v control minimum v pwr v ripple rejection current limit control pin current v mv a
www.irf.com 3 OM7580SC fig 1: typical power voltage vs output current fig 2: typical control voltage vs output current fig 3: typical reference voltage vs temperature fig 4: typical control pin current vs output current
4 www.irf.com OM7580SC world headquarters: 233 kansas st., el segundo, california 90245, tel: (310) 252-7105 ir leominster: 205 crawford st., leominster, massachusetts 01453, tel: (978) 534-5776 data and specifications subject to change without notice. 08/03 case outline and dimensions ? mo-078aa layout consideration it is recommended that output capacitors be located as close as possible to the v out terminal of the device to prevent any high frequency oscillation that may result due to excessive stray inductance. specfications for capacitors: 330 f tantalum low esr, 220 f electrolytic, 22 f electrolytic fig 5: typical application 1 2 3 4 5 pin assignment pin # pin description 1sense 2 adjust 3 v out 4 v ctrl 5 v pwr v out = 1.25v(1 + (r2/r1)) + i adj (r2) i adj = 50ua @ 25c om7580 v out pin1 3.3v 0.1uf 1uf ( x5 ) v power v control 0.1uf 5v adj r1 r2 sense 22uf 0.1uf 220uf 1uf ( x5 ) 330uf pin2 pin3 pin4 pin5 part numbering nomenclature om 7580 s c x omnirel device s=isolated package screening
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