1.5a low dropout positive adjustable or fixed-mode regulator APE1086 this datasheet contains new product information. advanced power electronics corp. reserves the rights to modify the product specification without notice. no liability is assumed as a result of the use of this product. no rights under any patent accompany the sale of the product. 200313072-1/6 ? features ? 3-terminal adjustable or fixed 1.5v, 1.8v, 2.5v, 3.3v, 5.0v ? 1.4v maximum dropout at full load current ? fast transient response ? built-in ther mal shutdown ? output curr en t limiting rohs compliant ? general description APE1086 is a low dropout positive adjustable or fixed-mode regulator with minimum of 1.5a output current capability. the product is specifically designed to provide well-regulated supply for low voltage ic applications such as high-speed bus termination and low current 3.3v logic supply. APE1086 is also well suited for other applications such as vga cards. APE1086 is guaranteed to have <1.4v dropout at full load current making it ideal to provide well-regulated outputs of 1.25v to 5.0v with 4.7 to 12v input supply by different output voltage. ? ordering information APE1086 x x low dropout regulator package vout h : to252-3l s : to263-3l p : to220-3l blank : adj 15 = 1.5v 18 = 1.8v 25 = 2.5v 33 = 3.3v 50 = 5.0v ? typical application 5v to 3.3v fixed mode regulator adjustable regulator c2 100uf 5v 3.3v/1.5a tab is vout vin vout gnd c1 100uf r1 121 r2 121 c2 100uf 5v 2.5v/1.5a tab is vout vin vout c1 100uf adj v out =v ref (1+r2/r1) ? ? ) 1 2 ref o r r (1 v v + ? = note: advanced power electronics corp.
1.5a low dropout positive adjustable or fixed-mode regulator APE1086 2/6 ? block diagram 3 thermal shutdown 1 2 vout adj (gnd) 1.25v + + current limit vin
1.5a low dropout positive adjustable or fixed-mode regulator APE1086 3/6 ? absolute maximum ratings symbol parameter rating unit vin dc supply voltage -0.3 to 12 v p d power dissipation internally limited t st storage temperature -65 to +150 o c t op operating junction temperature range 0 to +150 o c ? electrical characteristics (under operating conditions) parameter conditions min typ max unit ref erence voltage APE1086-adj t j =25 o c,(v in -v out )=1.5v,i o =10ma 1.225 1.250 1.275 v APE1086-1.5 i out = 10ma, t j = 25 o c, 3v v in 12v 1.470 1.500 1.530 v o utput voltage APE1086-1.8 i out = 10ma, t j = 25 o c, 3.3v v in 12v 1.764 1.800 1.836 v APE1086-2.5 i out = 10ma, t j = 25 o c, 4v v in 12v 2.450 2.500 2.550 v APE1086-3.3 i out = 10ma, t j = 25 o c, 4.8v v in 12v 3.235 3.300 3.365 v APE1086-5.0 i out = 10ma, t j = 25 o c, 6.5v v in 12v 4.900 5.000 5.100 v line regulation APE1086-xx i o =10ma, v out +1.5vAPE1086-adj v in =3.3v, 0maAPE1086-1.5 v in =3v, 0maAPE1086-1.8 v in =3.3v, 0maAPE1086-2.5 v in =4v, 0maAPE1086-3.3 v in = 5v, 0 i out 1.5a, t j =25 o c , t j =25 o c (note 1.2) - 26 33 mv load regulation APE1086-5.0 v in = 8v, 0 i out 1.5a, t j =25 o c , t j =25 o c (note 1.2) - 40 50 mv dropout voltage (v in -v out ) APE1086-adj/-2.5 /-3.3/-3.6/-5.0 i out = 1.5a, ' v out =1%v out - 1.3 1.4 v current limit APE1086-adj/-2.5 /-3.3/-3.6/-5.0 (v in -v out ) = 5v 1. 6 - - a minimum load current APE1086-xx 0 o c tj 125 o c - 5 10 ma thermal regulation t a =25 : , 30ms pulse - 0.008 0.04 %/w f=120hz,c out =25uf tantalum, i out =1.5a ripple rejection APE1086-xx v in =v out +3v - 60 70 db rms noise (% of v out ) 10hz d f d 10khz - 0.003 - % temperature stability i o =10 ma - 0.5 - % thermal resistance junction-to-ambient (no heat sink ;no air flow) to-252 to-263 to-220 - 101 83 86 - o c/w thermal resistance junction-to-case to-252: control circuitry/power transistor to-263: control circuitry/power transistor to-220: control circuitry/power transistor - 15 0.65/2.7 0.65/2.7 - o c/w note 1: see thermal regulation specifications for changes in output voltage due to heating effects. line and load regulation ar e measured at a constant junction temperature by low duty cycle pulse testing. load regulation is measured at the output lead = 1/18? from the package. note 2:line and load regulation are guaranteed up to the maximum power dissipation of 15w. power dissipation is determined by t he difference in input and output and the output current. guaranteed maximum power dissipation will not be available over the full input/output range. note 3:quiescent current is defined as the minimum output current required in maintaining regulation. at 12v input/output diff erential the device is guaranteed to regulate if the output current is greater than 10ma. a d v a n ced po w e r electro n i cs c o rp .
1.5a low dropout positive adjustable or fixed-mode regulator APE1086 4/6 ? functional d escription introduction the APE1086 adjustable or fixed-mode low dropout (ldo) regulator is a 3 terminal device which can easily be programmed by internal mask change to any voltages within the range of 1.25v to vin-1.4v. the APE1086 only needs 1.4v differential between vin and vout to maintain output regulation. in addition, the output voltage tolerances are also extremely tight and they include the transient response as part of the specification. for example, intel vre specification calls for a total of +/- 100mv including initial tolerance, load regulation and 0 to 1.5a load step. the APE1086 is specifically designed to meet the fast current transient needs as well as providing an accurate initial voltage, reducing the overall system cost with the need for fewer output capacitors. load regulation since the APE1086 is only a 3 terminal device, it is not possible to provide true remote sensing of the output voltage at the load. but it can supply good load regulation by internal feedback bypass the external loss such as adjustable mode. stability the APE1086 requires the use of an output capacitor as part of the frequency compensation in order to make the regulator stable. for most applications a minimum of 10uf aluminum electrolytic capacitor insures both stability and good transient response. thermal design the APE1086 incorporates an internal thermal shutdown that protects the device when the junction temperature exceeds the maximum allowable junction temperature. although this device can operate with junction temperatures in the range of 150 o c, it is recommended that the selected heat sink be chosen such that during maximum continuous load operation the junction temperature is kept below the temperature. layout consideration the output capacitors must be located as close to the vout terminal of the device as possible. it is recommended to use a section of a layer of the pc board as a plane to connect the vout pin to the output capacitors to prevent any high frequency oscillation that may result due to excessive trace inductance. a d v a n ced po w e r electro n i cs c o rp .
1.5a low dropout positive adjustable or fixed-mode regulator APE1086 5/6 ? typical performance characteristics temperature ( o c) percent change in output voltage vs temperature output voltage change (%) -50 -25 0 25 50 75 100 125 150 - 2 -1.5 - 1 -0.5 0 0. 5 1 1.5 2 input voltage (v) line regulation output voltage deviation (%) 0 0.2 0.4 0.6 0.8 1 24 6 8 10 12 time (us) line transient response output voltage deviati on (mv) input voltage (v) -40 -20 0 20 40 5.5 6.5 7.5 cin=1uf cout=10uf tantalum 0 20 40 60 80 100 120 140 160 180 200 time (us) load transient response load current (a) output voltage deviation (mv) 010 20 30 40 50 60 70 80 90 100 -1 0 1 2 -20 -10 0 10 20 30 cin=1uf cout=10uf tantalum preload=100ma temperature ( o c) load regulation vs temperature output voltage deviation (%) -25 0 25 50 75 100 125 - 1 -0.80 -0.40 -0.20 0 0.20 i load=1.5a output current (a) dropout voltage vs output current dropout voltage (v) 0 0. 2 0. 4 0. 6 0. 8 1. 0 1. 2 1. 4 1. 6 1. 8 2. 0 0 tj = 25 o c tj = 125 o c 0.25 0.5 0.75 1.0 1.25 1.5 a d v a n ced po w e r electro n i cs c o rp .
1.5a low dropout positive adjustable or fixed-mode regulator APE1086 6/6 ? marking information logo part number 1086 for adj 108 6-vv : 15 fo r 1.5v 18 for 1.8v 25 for 2.5v 33 for 3.3v 50 for 5v y: year -"1" : 2001 ~ ww: xth week - 01~52 sss: sequence - 001~ ( t op v i e w ) (to252-3l) logo part number 1086-vv : 15 for 1.5v 18 for 1.8v 25 for 2.5v 33 for 3.3v 50 for 5v blank for adj y: year -"1": 2001 ~ ww: xth week - 01~52 sss: sequence - 001~ ( top view) (to220-3l / to263-3l) 1086-vv y ww sss 1086-vv y ww sss a d v a n ced po w e r electro n i cs c o rp .
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