sg79xxa / sg79xx p roduct d atasheet microsemi analog mixed signal group 11861 western avenue, garden grove, ca. 92841, 714-898-8121, fax: 714-893-2570 page 1 www. microsemi . com copyright ? 1997 rev. 1.6, 2010-07-16 negative fixed voltage regulator tm ? description the sg79xxa/sg79xx series of negative regulators offer self-contained, fixed- voltage capability with up to 1.5a of load current and input voltage up to -30v. with a variety of output voltages this regulator series is an optimum complement to the sg7800a/sg7800 positive three terminal regulators. these units feature a unique band gap reference which allows the sg79xxa series to be specified with an output voltage tolerance of 1.5%. the sg79xxa versions also offer much improved line regulation characteristics. all protective features of thermal shutdown, current limiting, and safe-area control have been designed into these units and since these regulators require only a single output capacitor (sg79xx series) or a capacitor and 5ma minimum load (sg120 series) for satisfactory performance, ease of application is assured. although designed as fixed-voltage regulators, the output voltage can be increased through the use of a simple voltage divider. the low quiescent drain current of the device insures good regulation when this method is used. these devices are available in hermetically sealed to-257 (both case grounded ?g? and isolat ed ?ig?), to-3, to- 39 and lcc packages. important: for the most current data, consult microsemi ?s website: http://www.microsemi.com key features ? output voltage set internally to 1.5% on sg79xxa ? output current to 1.5a ? excellent line and load regulation ? foldback current limiting ? thermal overload protection ? voltages available: -5v, -12v, -15v ? contact factory for other voltage options ? available in surface mount package high reliability features - sg79xxa/sg79xx ? available to mil-std - 883 , ? 1.2.1 ? mil-m38510/11501bxa - jan7905t ? mil-m38510/11505bya - jan7905k ? mil-m38510/11502bxa - jan7912t ? mil-m38510/11506bya - jan7912k ? mil-m38510/11503bxa - jan7915t ? mil-m38510/11507bya - jan7915k ? mil-m38510/11508bya - jan7924k ? msc-amsg level "s" processing available ? available to dscc ? standard microcircuit drawing (smd) product highlight s s g g 7 7 9 9 x x x x
sg79xxa / sg79xx p roduct d atasheet microsemi analog mixed signal group 11861 western avenue, garden grove, ca. 92841, 714-898-8121, fax: 714-893-2570 page 2 www. microsemi . com copyright ? 1997 rev. 1.6, 2010-07-16 negative fixed voltage regulator tm ? absolute maximum ratings device output voltage input voltage input voltage differential (output shorted to ground) -5v -35v 35v -12v -35v 35v -15v -40v 35v operating juncti on temperature ................................................................................................ ......................................................... 150c storage temper ature ra nge ..................................................................................................... ............................................ -65 c to 150 c lead temperature (sol dering 10 seconds ) ....................................................................................... ................................................... 300 c note: exceeding these ratings could cause dama ge to the device. all voltages are with respect to ground. currents are posit ive into, negative out of specified terminal . thermal data k to-3 3-pin metal can thermal resistance - junction to c ase , jc 3.0 c/w thermal resistance - junction to a mbient , j a 35 c/w t to-39 3-pin metal can thermal resistance - junction to c ase , jc 15 c/w thermal resistance - junction to a mbient , j a 120 c/w g to-257 3-pin hermetic thermal resistance - junction to c ase , jc 3.5 c/w thermal resistance - junction to a mbient , j a 42 c/w ig to-257 3-pin hermetic (isolated) thermal resistance - junction to c ase , jc 4.0 c/w thermal resistance - junction to a mbient , j a 42 c/w l leadless chip carrier 20-pin ceramic thermal resistance - junction to c ase , jc 35 c/w thermal resistance - junction to a mbient , j a 120 c/w junction temperature calculation: t j = t a + (p d x ja ). the j a numbers are guidelines for the thermal perf ormance of the device/pc-board system. a ll of the above assume no ambient airflow. p p a a c c k k a a g g e e d d a a t t a a
sg79xxa / sg79xx p roduct d atasheet microsemi analog mixed signal group 11861 western avenue, garden grove, ca. 92841, 714-898-8121, fax: 714-893-2570 page 3 www. microsemi . com copyright ? 1997 rev. 1.6, 2010-07-16 negative fixed voltage regulator tm ? characteristic curves figure 1 ? maximum average power dissipation figure 2 ? quiescent current vs. load figure 3 ? temperature coefficient figure 4 ? short-circuit current vs. v in g g r r a a p p h h s s
sg79xxa / sg79xx p roduct d atasheet microsemi analog mixed signal group 11861 western avenue, garden grove, ca. 92841, 714-898-8121, fax: 714-893-2570 page 4 www. microsemi . com copyright ? 1997 rev. 1.6, 2010-07-16 negative fixed voltage regulator tm ? characteristic curves figure 5 ? quiescent current vs. v in figure 6 ? short-circuit current vs. v in figure 7 ? dropout characteristics figure 8 ? ripple rejection vs. frequency g g r r a a p p h h s s
sg79xxa / sg79xx p roduct d atasheet microsemi analog mixed signal group 11861 western avenue, garden grove, ca. 92841, 714-898-8121, fax: 714-893-2570 page 5 www. microsemi . com copyright ? 1997 rev. 1.6, 2010-07-16 negative fixed voltage regulator tm ? applications figure 9 ? fixed output regulator figure 10 ? circuit for increasing output voltage note: 1. c1 is required only if regulator is separated from rectifier filter. 2. both c1 and c2 should be low e.s.r. types such as solid tantalum. if aluminum electrolytic capacitors are used, at least 10 times values shown should be selected. 3. if large output capacitie s are used, the regulators must be protected from momentary input shorts. a high current diode. note: c3 optional for improved transient response and ripple rejection. () () 15ma reg v r r r r regulator v v 2 1 2 1 out = + = recommended operating conditions parameter sg79xx / 79xxa units min typ max operating junction temperature range (note 2) -55 150 c note 2: range over which the device is functional. a a p p p p l l i i c c a a t t i i o o n n s s
sg79xxa / sg79xx p roduct d atasheet microsemi analog mixed signal group 11861 western avenue, garden grove, ca. 92841, 714-898-8121, fax: 714-893-2570 page 6 www. microsemi . com copyright ? 1997 rev. 1.6, 2010-07-16 negative fixed voltage regulator tm ? electrical characteristics unless otherwise specified, these specifi cations apply over the oper ating ambient temperatures for sg7905a / sg7905 with -55c < t a < 125c, v in = -10v, i o = 500ma for the k, g, and ig ? power packages, i o = 100ma for the t and l packages, c in = 2f, and c out = 1f. low duty cycle pulse testing techni ques are used which maintains junction and ca se temperatures equal to the ambient temp erature. parameter test conditions sg7905a sg7905 units min typ max min typ max output voltage t j = 25c -4.95 -5.00 -5.08 -4.80 -5.00 -5.20 v line regulation (note 1) v in = -7.5v to -25v, t j = 25c 5 25 3 50 mv v in = -8v to -12v, t j = 25c 3 12 1 25 mv load regulation (note 1) power pkgs: i o = 5ma to 1.5a, t j = 25c 15 75 15 100 mv i o = 250ma to 750ma, t j = 25c 15 25 15 25 mv t ? pkg: i o = 5ma to 500ma, t j = 250c 5 30 5 100 mv total output voltage v in = -8v to -20v tolerance power pkgs: i o = 5ma to 1.0a, p < 20w -4.85 -5.00 -5.15 -4.70 -5.00 -5.30 v t ? pkg: i o =5ma to 500ma, p < 20w -4.85 -5.00 -5.15 -4.70 -5.00 -5.30 v quiescent current over temperature range 2.5 2.5 ma t j = 25c 2.0 2.0 ma quiescent current change with line: v in = -8v to -25v 1.3 1.3 ma with load: i o = 5ma to 1.0a (power pkgs.) 0.5 0.5 ma i o = 5ma to 500ma (t) 0.5 0.5 ma dropout voltage ? v o = 100mv, t j = 25c power pkgs: i o = 1.0a, t-pkg: i o = 500ma 1.1 2.3 1.1 2.3 v peak output current power pkgs: t j = 25c 1.5 3.3 1.5 3.3 a t ? pkg: t j = 25c 0.5 1.4 0.5 1.4 a short circuit current power pkgs: v in = -35v, t j = 25c 1.2 1.2 a t ? pkg: v in = -35v, t j = 25c 0.6 0.6 a ripple rejection ? v in = 10v, f = 120hz, t j = 25c 54 54 db output noise voltage (rms) f = 10hz to 100khz (note 2) 25 80 25 80 v/v long term stability 1000 hours @ t j = 125c 20 20 mv thermal shutdown i o = 5ma 175 175 c note 1: all regulation tests are made at constant junction temperature with low duty cycle testing. 2: this test is guaranteed but is not tested in production. e e l l e e c c t t r r i i c c a a l l s s
sg79xxa / sg79xx p roduct d atasheet microsemi analog mixed signal group 11861 western avenue, garden grove, ca. 92841, 714-898-8121, fax: 714-893-2570 page 7 www. microsemi . com copyright ? 1997 rev. 1.6, 2010-07-16 negative fixed voltage regulator tm ? electrical characteristics unless otherwise specified, these specifi cations apply over the oper ating ambient temperatures for sg7912a / sg7912 with -55c < t a < 125c, v in = -19v, i o = 500ma for the k, g, and ig ? power packages, i o = 100ma for the t and l packages, c in = 2f, and c out = 1f. low duty cycle pulse testing techni ques are used which maintains junction and ca se temperatures equal to the ambient temp erature. parameter test conditions sg7912a sg7912 units min typ max min typ max output voltage t j = 25c -11.8 -12.0 -12.2 -11.5 -12.0 -12.5 v line regulation (note 1) v in = -14.5v to -30v, t j = 25c 4 60 10 120 mv v in = -16v to -22v, t j = 25c 3 30 3 60 mv load regulation (note 1) power pkgs: i o = 5ma to 1.5a, t j = 25c 20 90 12 120 mv i o = 250ma to 750ma, t j = 25c 10 40 10 60 mv t ? pkg: i o = 5ma to 500ma, t j = 25c 10 40 10 240 mv total output voltage v in = -14.5v to -27v tolerance power pkgs: i o = 5ma to 1.0a, p < 20w -11.7 -12.0 -12.3 -11.4 -12.0 -12.6 v t ? pkg: i o = 5ma to 500ma, p < 2w -11.7 -12.0 -12.3 -11.4 -12.0 -12.6 v quiescent current over temperature range 4 4 ma t j = 25c 3 3 ma quiescent current change with line: v in = -14.5v to -30v 1.0 1.0 ma with load: i o = 5ma to 1.0a (power pkgs.) 0.5 0.5 ma i o = 5ma to 500ma (t) 0.5 0.5 ma dropout voltage ? v o = 100mv, tj = 25c power pkgs: i o = 1.0a, t ? pkg: i o = 500ma 1.1 2.3 1.1 2.3 v peak output current power pkgs: t j = 25c 1.5 3.3 1.5 3.3 a t ? pkg: t j = 25c 0.5 1.4 0.5 1.4 a short circuit current power pkgs: v in = -35v, t j = 25c 1.2 0.2 a t ? pkg: v in = -35v, t j = 25c 0.6 0.6 a ripple rejection ? v in = 10v, f = 120hz, t j = 25c 54 54 db output noise voltage (rms) f = 10hz to 100khz (note 2) 25 80 25 80 v/v long term stability 1000 hours @ t j = 125c 60 60 mv thermal shutdown i o = 5ma 175 175 c note 1: all regulation tests are made at constant junction temperature with low duty cycle testing. 2: this test is guaranteed but is not tested in production. e e l l e e c c t t r r i i c c a a l l s s
sg79xxa / sg79xx p roduct d atasheet microsemi analog mixed signal group 11861 western avenue, garden grove, ca. 92841, 714-898-8121, fax: 714-893-2570 page 8 www. microsemi . com copyright ? 1997 rev. 1.6, 2010-07-16 negative fixed voltage regulator tm ? electrical characteristics unless otherwise specified, these specifi cations apply over the oper ating ambient temperatures for sg7915a / sg7915 with -55c < t a < 125c, v in = -23v, i o = 500ma for the k, g, and ig ? power packages, i o = 100ma for the t and l packages, c in = 2f, and c out = 1f. low duty cycle pulse testing techni ques are used which maintains junction and ca se temperatures equal to the ambient temp erature. parameter test conditions sg7915a sg7915 units min typ max min typ max output voltage t j = 25c -14.8 -15.0 -15.2 -14.4 -15.0 -15.6 v line regulation (note 1) v in = -17.5v to -30v, t j = 25c 5 75 11 150 mv v in = -20v to -25v, t j = 25c 3 40 3 75 mv load regulation (note 1) power pkgs: i o = 5ma to 1.5a, t j = 25c 30 100 12 150 mv i o = 250ma to 750ma, t j = 25c 4 50 4 75 mv t ? pkg: i o = 5ma to 500ma, t j = 25c 10 50 10 240 total output voltage v in = -18.5v to -30v tolerance power pkgs: i o = 5ma to 1.0a, p < 20w -14.6 -15.0 -15.4 -14.25 -15.00 -15.75 v t ? pkg: i o = 5ma to 500ma, p < 2w -14.6 -15.0 -15.4 -14.25 -15.00 -15.75 v quiescent current over temperature range 4 4 ma t j = 25c 3 3 ma quiescent current change with line: v in = -18.5v to -30v 1.0 1.0 ma with load: i o = 5ma to 1.0a (power pkgs) 0.5 0.5 ma i o = 5ma to 500ma (t) 0.5 0.5 ma dropout voltage ? v o = 100mv, t j = 25c power pkgs: i o = 1.0a, t ? pkg: i o = 500ma 1.1 2.3 1.1 2.3 v peak output current power pkgs: t j = 25c 1.5 3.3 1.5 3.3 a t ? pkg: t j = 25c 0.5 1.4 0.5 1.4 a short circuit current power pkgs: v in = -35v, t j = 25c 1.2 1.2 a t ? pkg: v in = -35v, t j = 25c 0.6 0.6 a ripple rejection ? v in = 10v, f = 120hz, t j = 25c 54 54 db output noise voltage (rms) f = 10hz to 100khz (note 2) 25 80 25 80 v/v long term stability 1000 hours @ tj = 125c 60 60 mv thermal shutdown i o = 5ma 175 175 note 1: all regulation tests are made at constant junction temperature with low duty cycle testing. 2: this test is guaranteed but is not tested in production. notes e e l l e e c c t t r r i i c c a a l l s s
sg79xxa / sg79xx p roduct d atasheet microsemi analog mixed signal group 11861 western avenue, garden grove, ca. 92841, 714-898-8121, fax: 714-893-2570 page 9 www. microsemi . com copyright ? 1997 rev. 1.6, 2010-07-16 negative fixed voltage regulator tm ? connection diagrams & ordering information (see notes below) package part no. ambient temperature range connection diagram 3-terminal to-3 metal can k ? package sg79xxak/883b -55c to 125c gnd v out 1 2 case is v in sg7905ak/desc -55c to 125c sg7912ak/desc -55c to 125c sg7915ak/desc -55c to 125c sg79xxak -55c to 125c sg79xxk/883b -55c to 125c jan7905k -55c to 125c jan7912k -55c to 125c jan7915k -55c to 125c sg79xxk -55c to 125c 3-pin to-39 metal can t ? package sg79xxat/883b -55c to 125c 1 2 3 gnd v out v in case is v in sg7905at/desc -55c to 125c sg7912at/desc -55c to 125c sg7915at/desc -55c to 125c sg79xxat -55c to 125c sg79xxt/883b -55c to 125c jan7905t -55c to 125c jan7912t -55c to 125c jan7915t -55c to 125c sg79xxt -55c to 125c 3-pin hermetic to-257 ig ? package (isolated) SG79XXAIG/883b -55c to 125c v out ground v in sg7905aig/desc -55c to 125c sg7912aig/desc -55c to 125c sg7915aig/desc -55c to 125c SG79XXAIG -55c to 125c sg79xxig/883b -55c to 125c sg79xxig -55c to 125c 20-pin ceramic leadless chip carrier l ? package sg79xxl/883b -55c to 125c n.c. v in n.c. v o v o n.c. v o sense n.c. n.c. n.c. n.c. n.c. n.c. n.c. ground n.c. ground n.c. v in n.c. 1 2 3 4 5 6 7 8 910111213 14 15 16 17 18 19 20 see notes 5 & 6 sg79xxl -55c to 125c sg7905al/desc -55c to 125c sg7912al/desc -55c to 125c sg7912al/desc -55c to 125c 3-pin hermetic to-257 g ? package (case is v in ) sg79xxag/883b -55c to 125c v out ground v in case is v in sg7905ag/desc -55c to 125c sg7912ag/desc -55c to 125c sg7915ag/desc -55c to 125c sg79xxag -55c to 125c sg79xxg/883b -55c to 125c sg79xxg -55c to 125c note 1: contact factory for jan and desc product availability. 2: all parts are viewed from the top. 3: ?xx? to be replaced by output voltage of specific fixed regulator. 4: some products will be available in hermetic flat pack (f). consult factory for price and availability. 5: both inputs and outputs must be externally connected together at the device terminals. 6: for normal operation, the v o sense pin must be externa lly connected to the load. production data ? information contained in this document is proprietary to microsemi and is current as of publication date. this document may not be modified in any way without the express written consent of microsemi. product processing does not necessarily include testing of all parameters. microsemi reserves the right to change the configuration and performance of the product and to discontinue product at any time. m m e e c c h h a a n n i i c c a a l l s s
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