4707 dey road liverpool, n.y. 13088 m.s.kennedy corp. (315) 701-6751 features: 25k rad(si) total dose performance internal thermal overload protection output current to 1.5 amps output voltage internally trimmed to 1% accuracy available to dscc smd #tbd lead form options: straight and gull wing alternate voltage combinations available switching power supply post regulators constant voltage/current regulators high efficiency linear regulators typical applications pin-out information -vrtn -vout -vout -vout -vout +vrtn +vout +vout +vout +vout 5901rh series dual rad tolerant +/- voltage regulator description: the msk 5901rh series are dual radiation tolerant +/- voltage regulators offering low dropout and output accuracy to 1% maximum. excellent line and load regulation characteristics ensure highly accurate performance. in radiation envi- ronments, a total dose rating of 25k rad(si) provides highly reliable performance. the msk 5901rh series regulators are equipped with internal thermal overload protection. the devices are packaged in a space efficient 20 pin flatpack with two lead form options, straight and gull wing. iso-9001 certified by dscc equivalent schematic mil-prf-38534 certified 1 rev. d 7/05 msk590xrh msk590xrhg 20 19 18 17 16 15 14 13 12 11 -vin -vin -vin -vin -ccomp +ccomp +vin +vin +vin +vin 1 2 3 4 5 6 7 8 9 10
% % v v % % % % c/w % % v v % % % % c/w part number positive output regulators: output voltage tolerance dropout voltage load regulation line regulation thermal r esistance negative output regulators: output voltage tolerance dropout voltage load regulation line regulation thermal r esistance max. 1.0 3.0 3.0 3.0 2.0 2.5 1.5 2.5 10.5 1.0 3.0 3.0 3.0 2.0 2.5 1.5 2.5 12.5 storage temperature range lead temperature range (10 seconds) case operating temperature msk 5901rh-5909rh msk 5901rh-5909rh(k/h/e) +40v dc -40v dc internally limited 1.5a 1.5a +150c -65c to +150c 300c -40c to +85c -55c to +125c absolute maximum ratings t st t ld t c +input voltage (v in -v out ) -input voltage (v in -v out ) power dissipation +output current -output current junction temperature +v in -v in p d +i out -i out t j guaranteed by design but not tested. typical parameters are representative of actual device performance but are for reference only. industrial grade and "e" suffix devices shall be tested to subgroup 1 unless otherwise specified. military grade devices shall be 100% tested to subgroups 1,2 and 3. subgroup 1 t a =t c =+25c subgroup 2 t a =t c =+125c subgroup 3 t a =t c =-55c please consult the factory if alternate output voltages are required. for positive regulator, output decoupled to ground using 1f minimum tantalum capacitor unless otherwise specified. for negative regulator, output decoupled to ground using 1f minimum tantanlum capacitor. for complete radiation test data, consult "msk 5901rh total dose test report". continuous operation at or above absolute maximum ratings may adversly effect the device performance and/or life cycle. min. - - - - - - - - - - - - - - - - - - 1 2,3 1 2,3 1 2,3 1 2,3 - 1 2,3 1 2,3 1 2,3 1 2,3 - min. - - - - - - - - - - - - - - - - - - typ. 0.2 0.8 1.6 1.9 0.2 0.4 0.6 1.0 9.5 0.2 0.8 1.9 1.5 0.2 0.4 0.1 0.2 11.5 typ. 0.2 - 1.6 - 0.2 - 0.6 - 9.5 0.2 - 1.9 - 0.2 - 0.1 - 11.5 max. 1.5 - 3.5 - 2.5 - 2.0 - 11.0 1.5 - 3.0 - 2.5 - 2.0 - 13.0 parameter electrical specifications test conditions units msk 590xrh msk 590xrh k/h/e i out =10ma; v in =v out +3v i out =0.5a; ? v out =1% 10ma i out 0.5a v in =v out +3v i out =10ma v out +3v v in 35v junction to case @ 125c i out =10ma; v in =v out -3v i out =0.5a; ? v out =1% 10ma i out 0.5a v in =v out -3v i out =10ma -30v v in v out -3v junction to case @ 125c 5.0 5.0 12.0 12.0 15.0 15.0 5.0 5.0 10.0 msk5901 msk5902 msk5903 msk5904 msk5905 msk5906 msk5907 msk5908 msk5909 5.0 5.2 5.0 12.0 15.0 5.0 12.0 15.0 10.0 output voltages positive negative 5 1 2 3 4 5 6 7 8 2 notes: rev. d 7/05 1 4 3 2 1 group a subgroup 7 8
application notes heat sinking to determine if a heat sink is required for your application and if so, what type, refer to the thermal model and govern- ing equation below. governing equation: tj = pd x (r jc + r cs + r sa) + ta where tj = junction temperature pd = total power dissipation r jc = junction to case thermal resistance r cs = case to heat sink thermal resistance r sa = heat sink to ambient thermal resistance tc = case temperature ta = ambient temperature ts = heat sink temperature example: this example demonstrates an analysis where the output cur- rents are at 0.5 amp each and both inputs are 8v. conditions for msk 5901rh: +vin = +8.0v; iout = 0.5a positive regulator 1.) assume 45 heat spreading model. 2.) find positive regulator power dissipation: pd = (vin - vout)(iout) pd = (+8v-5v)(0.5a) pd = 1.5w 3.) for conservative design, set tj = +125c max. 4.) for this example, worst case ta = +90c. 5.) r jc = 10.5c/w from the electrical specification table. 6.) r cs = 0.15c/w for most thermal greases. 7.) rearrange governing equation to solve for r sa: r sa= ((tj - ta)/pd) - (r jc) - (r cs) = (125c-90c)/1.5w - 10.5c/w - 0.15c/w = 12.7c/w the same exercise must be performed for the negative regula- tor. capacitor selection input capacitor: an input bypass capacitor is recommenced when using the msk 5901 series regulators. this is especially true if the regu- lator is located farther than 6 inches from the power supply filter capacitors. for most applications a 1f solid tantalum capacitor will be suitable. output capacitor: a minimum of a 1f solid tantalum capacitor should also be used at the output to insure stability. any increase of this out- put capacitor larger than 10f will only improve output imped- ance. +c comp capacitor: for improved ripple rejection, +ccomp can be bypassed to ground with a 10f tantalum capacitor. this bypass capacitor will provide 80db ripple rejection. increased capacitance above 10f does not improve the ripple rejection at frequencies above 120hz. if the ccomp bypass capacitor is used, it may be neces- sary to add a protection diode to protect the regulator from ca- pacitor discharge damage. see typical applications circuit for clarification. if the bypass capacitor is not used, it should be left open since it is internally connected to the regulator. 3 positive regulator input capacitor: once again, if the regulator will be farther than 6 inches from power supply filter capacitors, then an input capacitor will be required on the negative regulator. it is recommended that a 1f solid tantalum capacitor be used. output capacitor: a minimum of a 1f solid tantalum capacitor should also be used at the output to insure stability. any increase of this out- put capacitor larger than 10f will only improve output imped- ance. -c comp capacitor: for improved ripple rejection, -ccomp can be bypassed to ground with a 10f tantalum capacitor. this bypass capacitor will provide 80db ripple rejection. increased capacitance above 10f does not improve the ripple rejection at frequencies above 120hz. if the ccomp bypass capacitor is used, it may be neces- sary to add a protection diode to protect the regulator from ca- pacitor discharge damage. see typical applications circuit for clarification. if the bypass capacitor is not used, it should be left open since it is internally connected to the regulator. negative regulator it is important to keep the output connection between the regu- lator and the load as short as possible since this directly affects the load regulation. for example, if 20 gauge wire were used which has a resistance of about 0.008 ohms per foot, this would result in a drop of 8mv/ft at 1amp of load current. it is also important to follow the capacitor selection guidelines to achieve best performance. typical application circuit load regulation rev. d 7/05
typical performance curves 4 positive rev. d 7/05 negative
5 mechanical specifications note: all dimensions are 0.010 inches unless otherwise labeled. esd triangle indicates pin 1. msk590xrh ordering information part number msk590xrh msk590xhrh msk590xkrh msk590xerh dscc smd tbd screening level industrial mil-prf-38534 class h mil-prf-38534 class k extended reliability tbd x - designates voltage selection (msk 5901-5909) rev. d 7/05 weight= 3.3 grams typical
6 m.s. kennedy corp. 4707 dey road, liverpool, new york 13088 phone (315) 701-6751 fax (315) 701-6752 www.mskennedy.com the information contained herein is believed to be accurate at the time of printing. msk reserves the right to make changes to its products or specifications without notice, however and assumes no liability for the use of its products. please visit our website for the most recent revision of this datasheet. contact msk for mil-prf-38534 class h, class k and appendix g (radiation) status. mechanical specifications continued note: all dimensions are 0.010 inches unless otherwise labeled. esd triangle indicates pin 1. msk590xrhg ordering information part number msk590xrhg msk590xhrhg msk590xkrhg msk590xerhg dscc smd tbd screening level industrial mil-prf-38534 class h mil-prf-38534 class k extended reliability tbd x - designates voltage selection (msk 5901-5909) rev. d 7/05 weight= 3.3 grams typical
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