2.7a, 1.2v l.d.o. voltage regulator LM1589 features low dro p out volta g e 1.3v at 2.7a out p ut curren t fast transient res p ons e 0.2% line re g ulation load re g ulation : 0.15% t yp ical internal thermal and current limitin g surface mount packa g e to-220 & to-263 ( d2 packa g e ) on-chi p thermal limitin g moisture sensitivity level 3 application s batter y char g e r low volta g e lo g ic su pp lies constant current re g ulator s portable instrumentation hi g h efficienc y linear power su pp lies hi g h efficienc y "green" com p uter s y stems smps post-re g ulato r power pc su pp lie s powerin g vga & sound card ordering information description test & typical application circui t 2008 - ver 1.0 htc ? 1 ? device name package LM1589t-x.x to-220 LM1589r-x.x to263 (d2) 1. adj/gnd 2. output 3. input to-220 pkg to-263 pkg the LM1589 is a low dropout three-terminal regulator with 2.7a output current capability. this device has been optimized for v tt bus termination, where transient response and mini-mum input voltage are critical. the LM1589 offers fixed 1.2v with 2.7a current capability for a gtl+ bus v tt termination. current limit is trimmed to ensure specified output current and controlled short-circuit current. on-chip thermal limiting pro-vides protection against any combination of overload and ambient temperature that would create excessive junction temperatures. the LM1589 is available in the industry-standard to-220, to-263 power packages. v in = 2.7 ~ 7
2.7a, 1.2v l.d.o. voltage regulator LM1589 absoulte maximum ratins characteristic supply voltage operating junction temperature range storage temperature range thermal resistance junction to case to-263 thermal resistance junction to ambient to-263 lead temperature (soldering) 10 sec. maximum output current electrical characteristics typicals and limits appearing in normal type apply for tj= +25c. the * denotes specifications which apply over the specified operating temperature range. notes: 1.see thermal regulation specifications for changes in output voltage due to heating effects. load and line regulation aremeasured at a constant junction temperature by low duty cycle pulse testing. 2.line and load regulation are guaranteed up to the maximum power dissipation (18w). power dissipation is determined byinput/output differential and the output currrent. guaranteed maximum output power will not be available over the full input/output voltage range. htc c/w c/w a value vin 7 tjc 3 unit v topr -10~125 ? 2 ? imax 2.7 tja 60 tsol 300 4 ma
2.7a, 1.2v l.d.o. voltage regulator LM1589 typical performance characteristics htc ? 3 ?
2.7a, 1.2v l.d.o. voltage regulator LM1589 typical performance characteristics htc ? 4 ?
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