low power-loss voltage regulators pq20wz51/pq20WZ11 features low power-loss (dropout voltage : max. 0.5v) surface mount package (equivalent to sc-63) variable output voltage (3.0 to 20v) output current (0.5a : pq20wz51 ) (1.0a : pq20WZ11 ) reference voltage precision : ?.5% built-in on/off control function low dissipation current at off-state (iqs : max. 5 a) built-in overcurrent, overheat protection functions, aso protection circuit available tape-packaged products (?30mm reel : 3 000 pcs., pq20wz5u/1u ) applications personal computers cd-rom drives power supplies for various oa equipment outline dimensions (unit : mm) variable output, general purpose, surface mount type low power-loss voltage regulator ?please refer to the chapter " handling precautions ". pq20wz51/pq20WZ11 absolute maximum ratings ( ) ( ) dc output vo ( ) vo ( ) vc gnd dc input v in 1 2 3 3 1 2 3 4 5 5 4 internal connection diagram on/off control terminal heat sink is common to terminal output voltage adjustment terminal specific ic () v adj model no. 0.5 0.2 0.1 epoxy resin 0.5 1.7 0.5 0.9 5.2 0.5 9.7 max. 5.5 0.5 2.5 min. 2.3 0.5 4 1.27 6.6 max. () () () () () 3 1 2 3 4 5 parameter symbol rating unit v in vc v adj io p d t j t opr t stg t sol 24 24 5 v v v a w ? c ? c ? c ? c ? 1 ? 1 ? 1 ? 2 ? 3 ? 1 all are open except gnd and applicable terminals. ? 2 overheat protection may operate at 125<=tj<=150 ? c ? 3 for 10s (t a =25 ? c) input voltage on/off control terminal voltage output adjustment terminal voltage output current power dissipation(with infinite heat sink) junction temperature operating temperature storage temperature soldering temperature pq20WZ11 pq20wz51 0.5 1.0 8 150 20 to +80 40 to +150 260 notice in the absence of confirmation by device specification sheets,sharp takes no responsibility for any defects that may occur in equipment using any sharp devices shown in catalogs,data books,etc.contact sharp in order to obtain the latest device specification sheets before using any sharp device. internet internet address for electronic components group http://sharp-world.com/ecg/ free datasheet http:///
low power-loss voltage regulators pq20wz51/pq20WZ11 electrical characteristics fig. 1 test circuit fig. 2 test circuit for ripple rejection fig. 4 overcurrent protection characteristics (typical value) (pq20wz51) fig. 3 power dissipation vs. ambient temperature parameter symbol conditions v in vo r eg l r eg i rr v ref vcv ref v i -o i q vc( on ) ic( on ) vc( off ) ic( off ) i qs unitmax.typ.min. 3.5 3.0 45 2.574 2.0 ? 5 v in =4 to 10v, io=5ma refer to fig. 2 ? 4 t j =0 to 125 ? c, io=5ma ? 4, 6 io=0a io=0a io=0a, vc=0.4v io=0a, vc=0.4v 60 2.64 1.0 24 20 2.0 2.5 2.706 0.5 8 200 0.8 2.0 5.0 ? 4 pq20wz51 :io=0.3a, pq20WZ11 :io=0.5a ? 5 pq20wz51 :io=5ma to 0.5a, pq20WZ11 :io=5ma to 1.0a ? 6 input voltage shall be the value when output voltage is 95% in comparison with the initial value. ? 7 in case of opening control terminal , output voltage turns off. (unless otherwise specified, conditions shall be v in =5v, v o =3.3v, ? 4 ,r 1 =2k ? , r 2 =500 ? , v c =2.7v, t a =25 ? c) v v % % db v % v ma v a v a a input voltage output voltage load regulation line regulation ripple rejection reference voltage temperature coefficient of reference voltage dropout voltage quiescent current ? 7 on-state voltage for control on-state current for control off-state voltage for control off-state current for control output off-state consumption current 2 0 20 0 p d p d :with infinite heat sink 8050 100 150 5 10 8 power dissipation p d (w) ambient temperature t a ( ? c) 0 0.5 1.0 1.5 2.0 4 3 2 1 0 output voltage v o (v) output current i o (a) v i o =2v v i o =3v v i o =0.5v v o =3.3v v i o =1v a a v v a v in v c i q v ref i c 2k ? i o v o r l 47 f 0.33 f + r 2 r 1 v o =v ref x 1+ r 2 r 1 [r 1 =2k ? ,vref nearly =2.64v] 1 2 3 4 5 v c 47 f v in ei 2.7v eo 2k ? i o r l 0.33 f + r 2 r 1 f=120hz(sine wave) e i(rms) =0.5v i o =0.3a rr=20 log(e i(rms) /e o(rms) ) v in =5v v o =3.3v(r 1 =2k ? ) 1 2 3 4 5 v note) oblique line portion : overheat protection may operate in this area. free datasheet http:///
low power-loss voltage regulators pq20wz51/pq20WZ11 fig. 5 overcurrent protection characteristics (typical value) (pq20WZ11) fig. 6 output voltage adjustment characteristics 0 0.5 1.0 1.5 2.0 4 3 2 1 0 output voltage v o (v) output current i o (a) v i o =2v v i o =3v v i o =0.5v v o =3.3v v i o =1v r 2 (k ? ) output voltage v o (v) 0.1 1 10010 r 1 =2k ? 0 5 10 15 20 fig. 7 reference voltage deviation vs. junction temperature (typical value) fig. 8 output voltage vs. input voltage (pq20wz51) fig. 9 output voltage vs. input voltage (pq20WZ11) fig.10 dropout voltage vs. junction temperature (pq20wz51) 0 2 5 50 75 100 125 15 20 25 5 5 15 10 0 10 20 v in =7v v o =3.3v(r 1 =2k ? ,r 2 =0.5k ? ) i o =0.3a ( pq20wz51 ) =0.5a ( pq20WZ11 ) 25 reference voltage deviation ? v ref (mv) junction temperature t j ( ? c) 25 pq20wz51 pq20WZ11 output voltage v o (v) input voltage v in (v) 0123 5678 4 r l =6.6 ? r l = ? 1 0 2 5 6 7 3 4 8 r l =11 ? v c =2.7v , c i =0.33 f , c 0 =47 f t j =25 ? c r 1 =2k ? ,r 2 =0.5k ? output voltage v o (v) input voltage v in (v) 0123 5678 4 r l =3.3 ? r l = ? 1 0 2 5 6 7 3 4 8 r l =6.6 ? v c =2.7v , c i =0.33 f , c 0 =47 f t j =25 ? c r 1 =2k ? ,r 2 =0.5k ? junction temperature t j ( ? c) dropout voltage v i o (v) 25 0 2 5 5 0 7 5 100 125 0.14 0.13 0.12 0.11 0.1 0.15 0.16 0.17 0.18 0.19 0.2 v in =3.135v, vc=2.7v, r 1 =2k ? , r 2 =500 ? , i o =0.3a free datasheet http:///
low power-loss voltage regulators pq20wz51/pq20WZ11 fig.11 dropout voltage vs. junction temperature (pq20WZ11) fig.12 quiescent current vs. junction temperature fig.13 ripple rejection vs. input ripple frequency fig.14 ripple rejection vs. output current (pq20wz51) fig.15 ripple rejection vs. output current (pq20WZ11) junction temperature t j ( ? c) dropout voltage v i o (v) 25 0 2 5 5 0 7 5 100 125 0.11 0.1 0.12 0.13 0.14 0.15 0.16 0.17 0.18 v in =3.135v, vc=2.7v, r 1 =2k ? , r 2 =500 ? , i o =0.5a junction temperature t j ( ? c) quiescent current i q (ma) 0 2 5 5 0 7 5 100 125 25 0 1 2 3 4 5 v in =5v i o =0a v c =2.7v r 1 =2k ? r 2 =500 ? t j =25 ? c rr=20 log(e i(rms) /e o(rms) ) i o =0.3a e i(rms) =0.5v (sine wave) v in =5v r 1 =2k ? r 2 =0.5k ? ripple rejection rr (db) input ripple frequency f (khz) 0.1 1 10 100 45 40 50 55 60 65 70 75 80 pq20WZ11 pq20wz51 t j =25 ? c e i(rms) =0.5v f=120hz (sine wave) v in =5v r 1 =2k ? r 2 =0.5k ? output current i o (a) ripple rejection rr (db) 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 45 40 50 55 60 65 70 75 80 t j =25 ? c e i(rms) =0.5v f=120hz (sine wave) v in =5v r 1 =2k ? r 2 =0.5k ? output current i o (a) ripple rejection rr (db) 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 45 40 50 55 60 65 70 75 80 fig.16 circuit operating current vs. input voltage (pq20wz51) 0123456 20 15 10 5 0 circuit operating current i bias (ma) input voltage v in (v) r l =6.6 ? r l =11 ? r l = ? vc=2.7v, r 1 =2k ? , r 2 =500 ? (vo=3.3v) free datasheet http:///
low power-loss voltage regulators pq20wz51/pq20WZ11 fig.17 circuit operating current vs. input voltage (pq20WZ11) 012345678 20 25 30 15 10 5 0 circuit operating current i bias (ma) input voltage v in (v) r l =3.3 ? r l =6.6 ? r l = ? vc=2.7v, r 1 =2k ? , r 2 =500 ? (vo=3.3v) typical application 2k ? v o c o dc input cin on/off signal high : output on low or open : output off + r 2 r 1 v in 1 4 3 load 2 5 model line-ups for tape-packaged products pq20WZ11 pq20wz1u 0.5a output output current sleeve-packaged products high-precision output type tape-packaged products high-precision output type pq20wz51 1.0a output pq20wz5u fig.18 power dissipation vs. ambient temperature cu area 740mm 2 cu area 180mm 2 cu area 100mm 2 cu area 70mm 2 cu area 36mm 2 power dissipation p d (w) ambient temperature t a ( ? c) 20 0 0 1 2 3 20 40 60 80 100 pwb material : glass-cloth epoxy resin size : 50 x 50 x 1.6mm cu thickness : 35 m pwb cu free datasheet http:///
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