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1/11 etr0324-006 xb1085 series general description the xb1085 is a series of low dropout positive voltage regu lators with a high output current capacity of 3.0a . stable output can be maintained by using 10 f (c in ) and 22 f (c l ) of tantalum capacitors. the fixed voltage types (xb1085p series) are available in 1.5v, 1.8v, 2.5v, 3.3v, and 5.0v. the voltage adjustable type (xb1085k series) is also available which can set t he output voltage with only two external resistors. with an overcurrent and thermal protection ci rcuit built-in, the ic is disabled for pr otection when an output current reaches limit current or junction temperature increases up to limit temperature. the xb1085 series is available in to-252 package. typical application circuits applications high efficiency linear regulators battery chargers dvd drives set top boxes various battery drive equipment features maximum output current : more than 3.0a (within pd) maximum operating voltage : 12v output voltage : 1.5v, 1.8v, 2.5v, 3.3v, 5.0v, (xb1085p) externally set (xb1085k/ reference voltage 1.25v (typ.)) output voltage accuracy : 1% ( tj =25 ) dropout voltage : 1.3v @ i out =3.0a (typ.) line regulation : 0.015% (typ.) load regulation : 0.1% (typ.) reference voltage pin current : less than 120 a overcurrent protection circuit built-in thermal protection circuit built-in package : to-252 environmentally friendly : eu rohs compliant xb1085p series vin vout vss iout vin cin=10uf (tantalum) cl=22uf (tantalum) xb1085k series vin vout adj iout vin cin=10uf (tantalum) cl=22uf (tantalum) r1 r2 vout=vref (1+r2/r1) + iadj r2 xb1085p331 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 0 600 1200 1800 2400 3000 output current: iout (ma) output voltage: vout(v) ta=85 ta=25 ta=0 vin=4.9v cin=10f(tantal),cl=22f(tantal) typical performance characteristics output voltage vs. output current vin=4.9v cin=10 f (tantalum), cl=22 f (tantalum) cl=22 f (tantalum) cl=22 f (tantalum) cin=10 f (tantalum) cin=10 f (tantalum)
2/11 xb1085 series pin number to-252 pin name funcitons 1 v ss / adj ground / reference voltage 2 v out output 3 v in input designator item synbol description p fixed v out type of regulators k adjustable (externally set) 151 v out =1.5v ( 1%) 181 v out =1.8v ( 1%) 251 v out =2.5v ( 1%) 331 v out =3.3v ( 1%) 501 v out =5.0v ( 1%) ?? output voltage and output voltage accuracy 12b v ref =1.25v ( 1%) jr to-252 (2,500/reel) ?- package (order unit) jr-g to-252 (2,500/reel) pin configuration to-252 (top view) pin assignment ordering information xb1085 ????? - (*1) product classification 13 2 2 vss/adj vout (tab) vin vout v out (tab) 2 1 v ss / adj 2 v out 3 v in (*1) the ?-g? suffix denotes halogen and antimony free as well as being fully rohs compliant.
3/11 xb1085 series parameter symbol ratings unit input voltage v in 18 v power dissipation to-252 pd 1300 (*2) mw operating junction temperature tj 125 storage temperature tstg - 55 ~ 125 a bsolute maximum ratings note: *1: stresses greater than those listed above rati ngs may cause permanent damage to the device. *2: the rating of the power dissipation is determined when mounted on the pcb. block diagram *diodes inside the circuit ar e esd protection diodes. current limit thermal protection bandgap reference error amp vss/ adj vout vin
4/11 xb1085 series parameter symbol conditions min. typ. max. unit circuit 1.485 1.5 1.515 v out (1.5v) v in =4.5v, i out =0ma o.t. (*1) 1.47 1.53 v 1.782 1.8 1.818 v out (1.8v) v in =4.8v, i out =0ma o.t. (*1) 1.764 1.836 v v out 2.475 2.5 2.525 (2.5v) v in =5.5v, i out =0ma o.t. (*1) 2.450 - 2.550 v v out 3.267 3.3 3.333 (3.3v) v in =6.3v, i out =0ma o.t. (*1) 3.234 - 3.366 v 4.95 5 5.05 output voltage v out (5.0v) v in =8.0v, i out =0ma o.t. (*1) 4.9 5.1 v - 0.5 6 S v out1 (1.5v) 3v Q v in Q 10v i out =10ma o.t. (*1) 1 6 mv - 0.5 6 S v out1 (1.8v) 3.3v Q v in Q 10v i out =10ma o.t. (*1) 1 6 mv S v out1 4v Q v in Q 10v - 0.5 6 (2.5v) i out =10ma o.t. (*1) 1 6 mv S v out1 4.8v Q v in Q 10v - 0.5 6 (3.3v) i out =10ma o.t. (*1) 1 6 mv - 0.5 10 line regulation S v out1 (5.0v) 6.5v Q v in Q 10v i out =10ma o.t. (*1) 1 10 mv - 3 15 S v out2 (1.5v) v in- v out =3.0v 0ma Q i out Q 3.0a o.t. (*1) 7 20 mv - 3 15 S v out2 (1.8v) v in -v out =3.0v 0ma Q i out Q 3.0a o.t. (*1) 7 20 mv S v out2 v in -v out =3.0v - 3 15 (2.5v) 0ma Q i out Q 3.0a o.t. (*1) 7 20 mv S v out2 v in -v out =3.0v - 3 15 (3.3v) 0ma Q i out Q 3.0a o.t. (*1) 7 20 mv - 5 20 load regulation S v out2 (5.0v) v in -v out =3.0v 0ma Q i out Q 3.0a o.t. (*1) 10 35 mv dropout voltage vdif S v out =1%, i out =3.0a - 1.3 1.5 v limit current i lim v in -v out =3.0v 3.2 4.5 - a supply current i dd v in =10v o.t. (*1) - 5 10 ma temperature stability ts v in -v out =1.5v i out =10ma o.t. (*1) - 0.5 - % - electrical characteristics xb1085pxxxj tj= 25 unless otherwise specified note: *1: o.t. denotes the specifications which apply over the operating junction temperature range (0 Q tj Q 125 o c). please be sure that the power consum ption does not exceed the power dissipation rating 1300mw. if the power consumption exc eeds the power dissipation rating and the operating junc tion temperature rises more than the rating 125 o c, the ic enters thermal shutdown state.
5/11 xb1085 series parameter symbol conditions min. typ. max. unit circuit v in -v out =3.0v 1.238 1.25 1.262 reference voltage v ref i out =10ma o.t. (*1) 1.225 - 1.275 v 2.85v Q v in Q 10v - 0.015 0.2 line regulation S v out1 i out =10ma o.t. (*1) 0.035 0.2 % v in -v out =3.0v - 0.1 0.3 load regulation S v out2 0ma Q i out Q 3.0a o.t. (*1) 0.2 0.4 % dropout voltage vdif S v out =1%, i out =3.0a - 1.3 1.5 v limit current i lim v in -v out =3.0v 3.2 4.5 - a temperature stability ts v in -v out =1.5v i out =10ma o.t. (*1) - 0.5 - % - minimum output current i outmin v in =10v o.t. (*1) - 3 10 ma adjust voltage pin current i adj v in =4.25v, i out =10ma o.t. (*1) - 55 120 a xb1085k12bj tj= 25 unless otherwise specified electrical characteristics (continued) note: *1: o.t. denotes the specifications which apply over the operating junction temperature range (0 Q tj Q 125 o c). please be sure that the power consumption does not exceed the power dissipation rating, 1300m w. if the power consumption ex ceeds the power dissipation rating and the operating juncti on temperature rises more than the rating, 125 o c, the ic enters thermal shutdown state.
6/11 xb1085 series xb1085pxxxj circuit * c in =10 f ( tantalum ) , c l =22 f ( tantalum ) circuit xb1085k12bj circuit * c in =10 f ( tantalum ) , c l =22 f ( tantalum ) vout vss v cl cin a v vin a vout vss vin v a 100 164 vout: 3.3v v cin cl vout vin adj test circuits vin vin vin *
7/11 xb1085 series typical performance characteristics xb1085k12b vout=3.3v) 1.22 1.23 1.24 1.25 1.26 1.27 0 102030405060708090 ambient temperature: ta () reference voltage: vref v) vin=4.9v cin=10f(tantal),cl=22f(tantal) (3) dropout voltage vs. output current (4) supply current vs. input voltage (1) output voltage vs. output current (2) output voltage vs. input voltage (5) reference voltage vs. ambient temperature (6) adjust pin current vs. ambient temperature xb1085p331 0 1 2 3 4 5 6 0246810 supply voltage: vin(v) supply current: iss (ma) ta=85 ta=25 ta=0 cin =10uf(tantalcl=22uftantal xb1085p331 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0246810 supply voltage: vin(v) output voltage: vout(v) ta=85 ta=25 ta=0 iout=10ma cin=10f(tantal),cl=22f(tantal) xb1085p331 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 1000 2000 3000 output current: iout (ma) output voltage: vout(v) ta=85 ta=25 ta=0 vin=4.9v cin=10f(tantal),cl=22f(tantal) xb1085p331 0.0 0.2 0.4 0.6 0.8 1.0 1.2 0 500 1000 1500 2000 2500 3000 output current: iout (ma) dropout voltage: vdifv) ta=85 ta=25 ta=0 cin=10uf(tantalcl=22uf(tantal) xb1085k12b(vout=3.3v) 0 20 40 60 80 100 0 102030405060708090 ambient temperature: ta () adjust pin current: iadj (a vin=4.25v iout10ma cin=10f(tantal),cl=22f(tantal) vin=4.9v cin=10 f (tantalum), cl=22 f (tantalum) cin=10 f (tantalum), cl=22 f (tantalum) vin=4.9v cin=10 f (tantalum), cl=22 f (tantalum) iout=10ma cin=10 f (tantalum), cl=22 f (tantalum) cin=10 f (tantalum), cl=22 f (tantalum) input voltage: vin (v) input voltage: vin (v) xb1085k12b (vout=3.3v) iout=10ma cin=10 f (tantalum), cl=22 f (tantalum)
8/11 xb1085 series (7) load transient response (8) input transient response (9) ripple rejection rate xb1085p331 0 20 40 60 80 100 0.01 0.1 1 10 100 ripple rejection ratekhz) ripple rejection rateb) vin=6.3vdc+1.0vp-pac iout=1ata=25cl=25uf(tantal) xb1085p331 5 6 7 8 9 10 11 time200s/div supply voltage: vin(v) 3.20 3.22 3.24 3.26 3.28 3.30 3.32 output voltage: vout(v) vin vout 5.3v 7.3v iout=200ma cin=1f(tantal),cl=10f(tantal) xb1085p331 -1.5 0.0 1.5 3.0 4.5 6.0 7.5 9.0 10.5 12.0 time100s/div output current: iout(a) 0.0 1.0 2.0 3.0 4.0 output voltage: vout(v) vin=6.3v cin=cl=10f(tantal) 0.1a 3a iout vout xb1085k12b(vout=3.3v) -1.5 0.0 1.5 3.0 4.5 6.0 7.5 9.0 10.5 12.0 time100s/div output current:iout(a ) 0.0 1.0 2.0 3.0 4.0 outputvoltage:vout(v) vin=6.3v cin=cl=10f(tantal) 0.1a 3a vout iout xb1085k12b(vout=3.3v) 5 6 7 8 9 10 11 time200s/div supply voltage: vin(v) 3.24 3.26 3.28 3.30 3.32 3.34 3.36 output voltage: vout(v) 5.3v 7.3v vin vout iout=200ma cin=1f(tantal),cl=10f(tantal) xb1085k12b(vout=3.3v) 0 20 40 60 80 100 0.01 0.1 1 10 100 ripple rejection ratekhz) ripple rejection rateb) vin=6.3vdc+1.0vp-pac iout=1ata=25cl=25uf(tantal) typical performance characteristics (continued) ripple rejection rate: psrr (db) ripple rejection rate: psrr (db) vin=6.3vdc+ 1.0vp-pac iout=1a, ta=25 , cl=25 f (tantalum) vin=6.3vdc+ 1.0vp-pac iout=1a, ta=25 , cl=25 f (tantalum) 0.1 1 10 ripple frequency: f (khz) 0.1 1 10 ripple frequency: f (khz) iout=200ma cin=1 f (tantalum), cl=10 f (tantalum) iout=200ma cin=1 f (tantalum), cl=10 f (tantalum) vin=6.3v cin=cl=10 f ( tantalum) vin=6.3v cin=cl=10 f ( tantalum) output current: iout(a)
9/11 xb1085 series packaging information to-252 unit: mm (2.29) (2.29) 4.94-5.50 bottom view 0.64-0.89 0.64-0.89 0.64-0.89 0.46-0.61 4.32 min 6.35-6.75
10/11 xb1085 series ? represents product series mark product series 8 5 xb1085****j* represent the type of regulator mark type product series p fixed output type xb1085p***j* k adjustable (externally set) xb1085k***j* ? represents output voltage mark output votlage product series 1 5 1.5v xb1085p151j* 1 8 1.8v xb1085p181j* 2 5 2.5v xb1085p251j* 3 3 3.3v xb1085p331j* 5 0 5.0v xb1085p501j* 1 2 adj xb1082k12bj* represents output voltage accuracy and output type mark output voltage accuracy (output type) product series 1 1% xb1085p**1j* b adjustable xb1085k12bj* represents the last digit of production year ex.) mark production year 7 2007 8 2008 represents production lot number 0 to 9, a to z repeated. (g, i, j, o, q, w excepted. ?0? of the first digit does not mark.) * no character inversion used. ex.) mark production lot number blank 3 03 1 a 1a marking rule to-252 to-252 (top view) 1 3 2 mark header ?? *mark header does not change with a lot.
11/11 xb1085 series 1. the products and product specifications cont ained herein are subject to change without notice to improve performance characteristic s. consult us, or our representatives before use, to confirm that the informat ion in this datasheet is up to date. 2. we assume no responsibility for any infri ngement of patents, pat ent rights, or other rights arising from the use of any information and circuitry in this datasheet. 3. please ensure suitable shipping controls (including fail-safe designs and aging protection) are in force for equipment employing products listed in this datasheet. 4. the products in this datasheet are nodev eloped, designed, or approved for use with such equipment whose failure of malfuncti on can be reasonably expected to directly endanger the life of, or cause significant injury to, the user. (e.g. atomic energy; aerospace; transpor t; combustion and associated safety equipment thereof.) 5. please use the products listed in this datasheet within the specified ranges. should you wish to use the products under conditions exceeding the specifications, please consult us or our representatives. 6. we assume no responsibility for damage or loss due to abnormal use. 7. all rights reserved. no part of this dat asheet may be copied or reproduced without the prior permission of torex semiconductor ltd.

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