scd8657 rev g ? manufactured using linear technology corporation ? space qualified rh1086 die ? radiation performance - total dose > 100 krad (si) ? two-independent voltage regulators ? thermal shutdown ? output voltage adjustable: 1.25v to 23v ? dropout voltage: 1.3v at 1.0amp ? 3-terminal ? output current: 1.0a (see note 1 pg 2) ? voltage reference: 1.25v +2%, -3.2% ? load regulation: 0.3% max ? line regulation: 0.25% max ? ripple rejection: >60db ? packaging ? hermetic metal - thru-hole or surface mount - 6 leads, .42"l x .65"w x .200"ht - power package - weight - 5 gm max ? designed for aerospace and high reliability space applications ? available on dscc smd: 5962-09201 description the aeroflex plainview vrg8657/8658 consists of two po sitive adjustable (rh1086) ldo voltage regulators each capable of supplying 1.0amps over the output voltage ra nge as defined under recommended operating conditions. the vrg8657/8658 offers excellent line and load regulation sp ecifications and ripple rejecti on. there is full electrical isolation between the regulators an d each regulator to the package. dropout (v in - v out ) decreases at lower load cu rrents for both regulators. the vrg8657/8658 serves a wide variety of applications including scsi-2 active terminator, high efficiency linear regulators, post regulators for switching supplie s, constant current regulators, battery chargers and microprocessor supply. the vrg8657/8658 has been specifically designed to meet exposure to radiation environments. the vrg8657 is configured for a thru-hole 6 lead metal power package and the vrg8658 is configur ed for a surface mount 6 lead metal power package. it is guaranteed operational from -55c to +125c. available screened to mil-std-883, the vrg8657/8658 is ideal for demanding military an d space applications. for detailed performance characteris tic curves, applications information and typical applications see the latest linear technology corporation ? data sheets for their rh/lt1086, which is available on-line at www.linear.com. radiation tolerant figure 1 ? block diagram / schematic june 21, 2010 www.aeroflex.com/voltreg standard products features vrg8657/vrg8658 low drop out(ldo)adjustable voltage regulators 5 v in adj v out 4 3 v in adj v out 1 2 6 rh1086 positive regulator rh1086 positive regulator dual positive
2 scd8657 rev g 6/21/10 aeroflex plainview absolute maximum ratings parameter range units input voltage 25+v ref v dc lead temperature (soldering 10 sec) 300 ? c input output differential 25 v dc output voltage +25 v dc dc output current 1.5 a esd (mil-std-883, m3015, class 3a) >4000 v operating junction temperature range -55 to +150 ? c storage temperature range -65 to +150 ? c notice: stresses above thos e listed under "absolute maximums rating" may cause permanent damage to the device. these are stress rating only; functional operation beyond the "o peration conditions" is not recommended and extended e xposure beyond the "operation conditions" may effect device reliability. recommended operating conditions parameter range units output voltage range 1.275 to 23 v dc input output differential 3 / 1.5 to 25 v dc case operating temperature range -55 to +125 c thermal resistance, junction to case ? jc 5c/w electrical perform ance characteristics unless otherwise specified, -55c< t c < +125c parameter sym conditions (p ? p max ? m i n m a x u n i t s reference voltage 2 / 3 / v ref 1.5v < v in - v out < 15v, 10ma < i out < 1.0a 1.210 1.275 v line regulation 2 / 3 /i load = 10ma, 1.5v < v in - v out < 15v - 0.25 % load regulation 2 / 3 /10ma < i out < 1.0a, v in - v out = 3v - 0.3 % dropout voltage 2 / 4 /v drop ? v ref = 1%, i out = 1.0a -1.30v adjust pin current 2 / - - 120 a adjust pin current change 2 / - 10 ma < i out < 1a, 1.5v < v in - v out < 15v - 5 a current limit 2 / 6 /i max v in - v out = 5v v in - v out < 25v 1.5 0.047 - - a a minimum load current 5 /i min v in - v out = 25v - 10 ma ripple rejection 3 /- i out = 1.0a, v in - v out = 3v, f = 120hz, c adj = c out = 25f 60 - db thermal regulation - 30ms pulse, t c = +25c - 0.04 %/w v ref long-term stability 5 /-burn in: t c = +125c @ 1000hrs minimum, tested @ 25c - 0.3 % notes: 1 / for compliance with mil-std-883 rev. c curre nt density specification, the rh1086mk is derated to 1.0 amp but is capable of 1. 5amps. 2 / specification derated to reflect total dose exposure to 100krad (si) @ +25c. 3 / line and load regulation are guaranteed up to the maximum power dissipation of 15w . power dissipation is determined by the in put/output differential voltage and the output current . guaranteed maximum power dissipation wi ll not be available ove r the full input/out put voltage range. 4 / dropout voltage is specified over the fu ll output current ra nge of the device. 5 / not tested. shall be guara nteed by design, characterization, or co rrelation to other te sted parameters. 6 / pulsed @ <10% duty cycl e @ +25c (see note 1). ? v out ? v in ? v out ? i out
3 scd8657 rev g 6/21/10 aeroflex plainview the maximum power dissipation is limited by the thermal shutdown function of each regulator chip in the vg8657/8658. the graph above represents the achievable power before the chip s huts down. the first line in the graph represents the maximum power dissipation of the vg8657/8658 with one regulator on (t he other off) and the other line represents both regulators on dissipating equal power. if both regulator s are on and one regulator is dissipating more power that the other, the maximum powe r dissipation of the vg8657/8658 will fall between the two lines. this graph is based on the maximum junction temperature of 150c and a thermal resistance ( ? jc ) of 5c/w. 60 50 40 30 20 10 0 20 40 60 80 100 120 140 case temperature (c) 1 regulator 0 both regulators maximum power dissipation (watts) figure 2 ? maximum powe r vs case temperature
4 scd8657 rev g 6/21/10 aeroflex plainview figure 4 ? rh1086 dropout voltage figure 3 ? rh1086 short circuit current see note 1, pg 2. see note 1, pg 2. output current (a) 0 0 minimum input/output differential (v) 1 2 0.5 1 1.5 t j = ? 55 c t j = 25 c t j = 150 c see note 13, pg 3. typical curve vrg8657/58 v in vout adj r1 r2 v ref 10f tant . i adj = 50a v ref = 1.25v, +reg = v out = v ref (1+r2/r1) + (i adj x r2) figure 5 ? basic rh1086 adju stable regulator application 10f tant .
5 scd8657 rev g 6/21/10 aeroflex plainview figure 6 ? package outline ? thru-hole power package .108 .200 .100 .123 ? .145 thru .415 .2075 r.065 typ. 4 plcs .655 .415 sq .003 .220 max. .005 .040 .002 .030 dia. .150 ref. 2 max. typ. .020 .720 measured lead tip ident esd/pin 1 ?b? ?a? ?c? ? .010 b c a m ? .010 c b a 3 4 5 6 2 1 2x .028 m ? .010 c b a .230 min notes: 1. dimension toler ance: .005 inches 2. package contains beo substrate 3. case electrically isolated .122 max. table i ? pin nu mbers vs function pin function 1pos_adj_1 2 pos_vout_1 3 pos_vin_1 4pos_adj_2 5 pos_vin_2 6 pos_vout_2
6 scd8657 rev g 6/21/10 aeroflex plainview figure 7 ? package outline ? surface mount power package .108 .200 .100 .123 ? .145 thru .415 .2075 r.065 typ. 4 plcs .655 .415 sq .003 .220 max. .005 .040 .002 .030 dia. .122 .150 ref. .020 .886 ident esd/pin 1 ?b? ?a? ?c? ? .010 b c a m ? .010 c b a notes: 1. dimension tolerance: .005 inches 2. package contains beo substrate 3 4 5 6 2 1 table ii ? pin numbers vs function pin function 1pos_adj_1 2 pos_vout_1 3 pos_vin_1 4pos_adj_2 5 pos_vin_2 6 pos_vout_2 2x .028 m ? .010 c b a .020 .060 3. case electrically isolated max.
7 plainview, new york toll free: 800-the-1553 fax: 516-694-6715 se and mid-atlantic tel: 321-951-4164 fax: 321-951-4254 international tel: 805-778-9229 fax: 805-778-1980 west coast tel: 949-362-2260 fax: 949-362-2266 northeast tel: 603-888-3975 fax: 603-888-4585 central tel: 719-594-8017 fax: 719-594-8468 www.aeroflex.com info-ams@aeroflex.com aeroflex microelectronic solutions reserves the right to change at any time without notice the specifications, design, function, or form of its products described herein. all parameters must be validated for each customer's application by engineering. no liability is assumed as a result of use of this product. no patent licenses are implied. export control: export warning: this product is controlled for expor t under the international traffic in arms regulations (itar). a license from the u.s. department of state is required prior to the export of this product from the united states. aeroflex?s military and space pr oducts are controlled for export under the international traffic in arms regulations (itar) and may not be sold or proposed or offered for sale to certain countries. (see itar 126.1 for complete information.) scd8657 rev g 6/21/10 our passion for performance is defined by three attributes represented by these three icons: solution-minded, performance-driven and customer-focused and the linear technology logo are registered trademarks and rh1086 are a copyright of linear technology corporation. ordering information model dscc smd # screening package vrg8657-s - military temperature, -55c to +125c screened in accordance with mil-prf-38534, class k. 6 lead thru-hole power pkg vrg8657-7 commercial flow, +25c testing only vrg8658-s military temperature, -55c to +125c screened in accordance with mil-prf-38534, class k 6 lead surface mount power pkg vrg8658-7 commercial flow, +25c testing only VRG8657-201-1S vrg8657-201-2s 5962-0920102kxc 5962-0920102kxa in accordance with dscc smd 6 lead thru-hole power pkg vrg8658-201-1s vrg8658-201-2s 5962-0920102kyc 5962-0920102kya 6 lead surface mount power pkg
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