scd8691 rev d 11 12 10 ? radiation performance - total dose: 100 krads(si), dose rate = 50 - 300 rads(si)/s ? output voltage adjustable: 1.0v to 3.3v ? output current: 7.5a ? dropout voltage: 0.8v at 7.5amps ? voltage reference: 1.0v 0.5% ? load regulation: 0.5% max ? line regulation: 0.2% max ? ripple rejection: >66db ? enable input ? slow-start capability ? packaging ? hermetic metal - thru-hole or surface mount - 12 leads, 1.0"w x .9"l x .250"ht - power package - weight - tbd gm max ? designed for aerospace and high reliability space applications ? dscc smd 5962-09237 pending description the aeroflex plainview vrg8691/92 is capable of supplying in excess of 7.5amps over the output voltage range as defined under recommended operating conditions. the regulator is exceptionally easy to set-up, requiring only 2 external resistors to set the output voltage. the module design has been optimized for excellent regulation and low drop-out voltage. further, the vrg8691/92 features inte rnal current limiting making them virtually blowout-proof against overloads. the limit is nominally 11.5a, but may be increased or d ecreased with the addition of one more external resistor. figure 2 illustrates setting voltage and current limits as well as choosing a slow-start capacitor. the vrg8691/92 serves a wide variety of ap plications including local on-card regulation, programmable output voltage regulation or precision current regulation. the vrg8691/92 has been specifically designed to meet exposure to radiation environments. the vrg8691 is configured for a thru-hole 12 lead me tal power package and the vrg8692 is configured for a surface mount 12 lead metal power package. it is guaranteed operational from -55c to +125c. available screened to mil-std-883, the vrg8691/92 is ideal for demanding military and sp ace applications. vrg8691/92 radiation tolerant figure 1 ? block diagram / schematic january 6, 2010 www.aeroflex.com/voltreg standard products note: aeroflex plainview does not currently have a ds cc certified radiation ha rdened assurance program adjustable 7.5a positive ldo regulator features 8 vrg8691/92 9 6 5 4 v out v sense current limit gnd enable v bias v in 7 slow_start 2 1 3
2 scd8691 rev d 1/6/10 aeroflex plainview absolute maximum ratings parameter range units operating (junction) temperature range -55 to +150 ? c lead temperature (soldering, 10 sec) 300 c storage temperature range -65 to +150 ? c v bias , v in 7v thermal resistance (junction to case ? jc ) 1c/w esd rating tbd 1 / kv power 25 2 / w 1 / meets esd testing per mil-st d-883, method 3015, class tbd. 2 / based on pass transi stor limitations of (v in - v o ) x i o and ? jc < 1 o c/w with 25 o c max t j rise and t c = +125c. notice: stresses above those lis ted under "absolute maximums rati ng" may cause permanent damage to the device. these are stress ratings only; functional operation beyond the "opera tion conditions" is not recommended and extended exposure beyond the "operation conditions" may effect device reliability. recommended operat ing conditions parameter range units output voltage range 1.0 to 3.3 v dc case operating temperature range -55 to +125 c output current 0 to 7.5 a v bias 3.3 to 5.5 1 / v dc v in 1.8 to 5.5 v dc 1 / v bias must maintain a level equal or above v in but not fall below 3.3v electrical performan ce characteristics 1 / parameter sym conditions min max units reference voltage v ref v in = v bias = 5v, en = 0, i out = 7.5a 0.995 1.005 v line regulation 4v < v in < 5v - 0.2 %/v load regulation 0a < i out < 7.5a - 0.5 % ripple rejection ratio f = 120hz, c load = 47f 66 - db dropout voltage v drop ? v out = 1% -0.8v adjustment pin current i adj -3a minimum load current i min -0ma current limit 3 /i cl 9.5 13.5 a long term stability 2 / -1% supply current (v bias )i bias -15ma thermal resistance (junction to case) ? jc -1c/w notes: 1. unless otherwise specified, these spec ifications apply for post radiation: v bias = v in = 5v, v out = 3.3v, i out = 7.5a and -55c < tc < +125c. 2. not tested. shall be guaranteed to th e specified limits af ter 1000hr life test. 3. current limit is adjustable as shown in figure 2. ? v out ? v in ? v out ? i out ? v out ? t ime
3 scd8691 rev d 1/6/10 aeroflex plainview figure 2 ? typical applications and notes v bias vrg8691/92 v in v out vsense r1 r2 v ref typical set-up curr. limit r3 inc r3 dec 10 11 12 4 3 2 1 8 enable 69 (adj) i adj < 3a v ref = 1.00v, v out = v ref (1+r1/r2) + (i adj x r1) r3 inc increases i cl r3 dec decreases i cl 75 x v in i cl ? i cl nom + or i cl ? i cl nom - note: r3 xxx 33 v in i cl nom 5v 11.5a 3.3v 7.5a 2.5v 5.7a 1.8v 4.1a 1 / i cl nom = r3 inc r3 dec setting current limit (i cl ) to increases i cl by ? ? example ? ? r3 inc = to decrease i cl by ? - example ? - r3 dec = in k ohms 1 / to increase or decrease i cl : 75 x v in 25 x v in 25 x v in 75 x v in css 7 setting output voltage application of slow-start capacitor, css > c ss c load v out nom i cl - i load nom 0.4 x v bias 1300 x a. c ss is effective only when v in is on prior to v bias or enable , i.e., v in must be applied first, b. c ss must be used when the load includes very large total capacitance (c load ). c. css may be used just to control v out rise time (t r ), when c load is not an issue. t r = v bias v bias - 2.5 () c ss x 1300 x l n 5 c load (active low) 0.1f 47f + then v bias and enable in any order including simultaneously. note: c ss in farads and t r in seconds 10f
4 scd8691 rev d 1/6/10 aeroflex plainview figure 3 ? package outline ? vrg8691 thru-hole power package pin numbers vs function pin function pin function 1v in 7slow_start 2v in 8 current limit 3v in 9v sense 4v bias 10 v out 5 enable 11 v out 6 ground 12 v out notes: 1. dimension tolerance: .005 inches 2. package contains beo substrate 3. case electrically isolated
5 scd8691 rev d 1/6/10 aeroflex plainview notes: figure 4 ? package outline ? vr g8692 surface mount power package 1. dimension tolerance: .005 inches 2. package contains beo substrate 3. case electrically isolated pin numbers vs function pin function pin function 1v in 7slow_start 2v in 8 current limit 3v in 9v sense 4v bias 10 v out 5 enable 11 v out 6 ground 12 v out
6 scd8691 rev d 1/6/10 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. our passion for performance is defined by three attributes represented by these three icons: solution-minded, performance-driven and customer-focused 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.) ordering information model dscc smd # screening package vrg8691-s - military temperature, -55c to +125c screened in accordance with mil-prf-38534, class k 12 lead thru-hole power pkg vrg8691-7 - commercial flow, +25c testing only vrg8692-s - military temperature, -55c to +125c screened in accordance with mil-prf-38534, class k 12 lead surface mount power pkg vrg8692-7 - commercial flow, +25c testing only VRG8691-201-1S vrg8691-201-2s 5962-0923701kxc 5962-0923701kxa in accordance with dscc smd 12 lead thru-hole power pkg vrg8692-201-1s vrg8692-201-2s 5962-0923701kyc 5962-0923701kya in accordance with dscc smd 12 lead surface mount power pkg
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