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W83310S/W83310Sg winbond bus termination regulator with over temp. & current limit protection W83310S W83310Sg
W83310S/W83310Sg publication release date: oct. 2006 -i- revision 1.0 W83310S datasheet revision history pages dates version version on web main contents 1. oct./03 0.5 n.a. all versions before 0.5 are for internal use only. 2. 3,9 oct./03 0.51 n.a. ac s pec. and typical waveform update. 3 12 feb./04 0.60 n.a. add the thermal data. 4 3 jul./04 0.61 n.a. add min./typ. value of vin. 5 2,3,11 jan./06 0.7 n.a modify application circuit, ac characteristic and add pb-free part no: W83310Sg. 6 13 oct./06 1.0 n.a update ordering information and official release of version 1.0
W83310S/W83310Sg -ii- table of contents- 1. general des cription ......................................................................................................... 1 2. features ....................................................................................................................... .......... 1 3. applicat ions ................................................................................................................... ....... 1 4. pin configuration a nd descript ion ............................................................................ 2 5. application circui t............................................................................................................ .3 6. internal block di agram- W83310S ................................................................................. 4 7. electrical chara cteristics........................................................................................... 5 7.1 ac character istics................................................................................................ 5 8. typical operatin g waveform......................................................................................... 6 9. package dimension (p ower so p-8) .............................................................................. 12 10. thermal perfo rmance .................................................................................................... 13 11. ordering info rmation .................................................................................................... 13 12. how to read the top marking...................................................................................... 13
W83310S/W83310Sg publication release date: oct. 2006 -1- revision 1.0 1. general description the W83310S is a linear regulator which provides ac hieves continuous 1.8 amp bi-directional sinking and driving capability for ddr sdram bus terminator app lication. the chip simply implement a stable power supply which can track half of input power dynamic ally for bus terminator with a single chip; that is the chip integrates two power mosfets. there is no any external power device needed. the W83310S is promoted with sop-8 power package. with W83310S design, a high integration, high performance, and cost-effective solution is promoted. 2. features y regulates a bi-directional power with driving and sinking capability y provides achieve continuous 1. 8amp driving and sinking current y power mosfet integrated y low external component count y low output voltage offset y operates with +3.3v and +2.5v control power y current limit protection y over temperature protection y power package sop-8 y low cost and easy to use 3. applications y ddr and ddr ii bus termination regulator y active termination bus y sstl-2 y sstl-3
W83310S/W83310Sg -2- 4. pin configuration and description symbol pin function vin 1 power input pin. gnd 2 ground. vref 3 reference voltage and chip enable. vout 4 output voltage. nc 5 no function vcntl 6 gate drive voltage. nc 7 no function nc 8 no function vin gnd vref vout nc nc vcntl nc 1 2 3 4 8 7 6 5 inbond W83310S
W83310S/W83310Sg publication release date: oct. 2006 -3- revision 1.0 5. application circuit c5 1000u u1 W83310S/sg vin gnd vref vout nc nc vcntl nc note: r3=1 kohm reserve for sink internal bias when vcntl is not present but vin is present. 2.5vstr c4 1u c2 1u r2 100k r3 1k r1 100k r4 1k r4=1 kohm reserve for vout discharge or sink internal bias when vin is not present but vcntl is present. c3 1u 2.5vstr/vcc3 enable# 3.3vdl/vcc3 c1 1000u q1 2n7002 3 1 2
W83310S/W83310Sg -4- 6. internal block diagram- W83310S v cntl v in v ref v out gn co ntrol logic circ uit current limit & otp
W83310S/W83310Sg publication release date: oct. 2006 -5- revision 1.0 7. electrical characteristics 7.1 ac characteristics W83310S vin=2.5v,vcntl=3.3v,vre f=1.25v,cout=100uf, t a = 0 c to +70 c parameter symbol min typ max units test conditions output offset voltage v os -20 20 mv i out =0a -20 20 loading: 0a ? 2.0a load regulation -20 20 mv loading: 0a ? - 2.0a v in 1.7 2.5/1.8 3.63 input voltage range v cntl 3.3 3.63 v operating current of vcntl i vcntl 1 1.5 ma no load(i out =0a) operating current of vin i vin 1 ma no load(i out =0a) 0.8 v output=high shutdown threshold trigger 0.2 v output=low shutdown current of vin i shdn 50 ua vref<0.2v loading=50 ma short current limit i lmt 4 a output short to gnd over temperature protection otp 130 145 note : load regulation is tested with a 1ms duty pulse current and measuring v out .
W83310S/W83310Sg -6- 8. typical operating waveform -- load regulation with test condition - v ctrl =3.3v; v in =2.5v; v out =1.25v; 2.0amp 1ms duty pulse driving current. v 6mv. -- load regulation with test condition - v ctrl =3.3v; v in =2.5v; v out =1.25v; 2.0amp 1ms duty pulse sinking current. v 2mv. -- load regulation with test condition - v ctrl =3.3v; v in =2.5v; v out =1.25v; 1.8amp cont. driving current. v 24mv.
W83310S/W83310Sg publication release date: oct. 2006 -7- revision 1.0 -- load regulation with test condition - v ctrl =3.3v; v in =2.5v; v out =1.25v; 1.8amp cont. sinking current. v 5mv -- power on waveform with condition: dc loading 0a; v in cap.: 1000uf; v out cap.: 1000uf. ch1: v in ; ch2: v out ; ch3: v ref ; ch4: output current
W83310S/W83310Sg -8- -- power on waveform with condition: dc loading 1.5amp; v in cap.: 1000uf; v out cap.: 1000uf. ch1: v in ; ch2: v out ; ch3: v ref ; ch4: output current
W83310S/W83310Sg publication release date: oct. 2006 -9- revision 1.0 -- power off waveform with condition: dc loading 0a; v in cap.: 1000uf; v out cap.: 1000uf. ch1: v in ; ch2: v out ; ch3: v ref ; ch4: output current -- power off waveform with condition: dc loading 1.5a; v in cap.: 1000uf; v out cap.: 1000uf. ch1: v in ; ch2: v out ; ch3: v ref ; ch4: output current
W83310S/W83310Sg -10- -- current limit protection: ch1: v out ch3: output current -- current limit protection (cont.): ch1: v out ; ch3: output current
W83310S/W83310Sg publication release date: oct. 2006 -11- revision 1.0 -- short protection and over temperatur e protection; ch4: output current
W83310S/W83310Sg -12- 9. package dimension (power sop-8)
W83310S/W83310Sg -13- 10. thermal performance test on four-layer (2s2p) jedec test board component temp. ( o c) package power (w) package die downset lead ambient jc ( o c /w) psop-8 3.05 100 145 79 78 25 14.7 11. ordering information part number package type production flow W83310S 8l sop-8 commercial, 0 c to +70 c W83310Sg 8l sop-8(pb-free package) commercial, 0 c to +70 c 12. how to read the top marking left line: winbond logo 1 st & 2 nd lines: W83310S, W83310Sg (pb-free package) 3 rd line: tracking code tracking code 316 g a 316 : packages assembled in year 03?, week 16 g : assembly house id; o means ose, g means gr, etc. a : the ic version w83 310s 316ga w83 310sg 316ga
W83310S/W83310Sg -14- important notice winbond products are not designed, intended, authorized or warranted for use as components in systems or equipment intended for surgi cal implantation, atomic energy control instruments, airplane or spaceship instrument s, transportation instruments, traffic signal instruments, combustion control instruments, or for other applications intended to support or sustain life. further more, winbond products are not intended for applications wherein failure of winbond products could result or lead to a situation wherein personal injury, death or severe property or environmental damage could occur. winbond customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify winbond for any damages resulting from such improper use or sales.

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