SA5888 hangzhou?silan?microelectronics?co.,ltd ?rev:1.1???????2006.10.31 http:?www.silan.com.cn??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?1?of?8 5-ch?btl?driver?for?dvd?player?with?disc?bidirectional?driver and?two?variable?regulators description the? SA5888?is? a? five- channel?btl?driver?ic?for?driving?the?motors and?actuators?in?products?such?as?cd?-?rom?/?dvd?drivers. it?is?also build- in?two?independent?precision?voltage?regulators?with?adjustable range?from?1.5v?to?4v?and?one?channel?bi- direction?dc?motor?driver for?tray. features *?wide?dynamic?range?(4.0v?(typ.)?when?v cc ?=?8v,?pvcc?=5v, and?r l =?8
). *?level?shift?circuit?on?chip. *?thermal?shutdown?circuit?on?chip. *?mute?mode?built-in. *?two?regulator?controllers?built-in. *?five?drivers?build-in:?dual?actuator?drivers,?sled?motor?driver, spindle?driver?and?tray?in-out?driver. applications *?cd *?cd-rom *?dvd hsop-28-375-0.8 or?dering?information device package SA5888 hsop-28-375-0.8 block?diagram
SA5888 hangzhou?silan?microelectronics?co.,ltd ?rev:1.1???????2006.10.31 http:?www.silan.com.cn??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?2?of?8 absolute?maximum?ratings ?(otherwise?specified,?t amb =25 c) characteristics symbol value unit power?supply?voltage v cc , 1/2pv cc 8 v power?dissipation p d 1.7* w operating?temperature t opr -35~+85 c storage?temperature t stg -55~+150 c *?when?mounted?on?a?70mm?x?70mm?x?1.6mm?glass?epoxy?board.?reduced?by?13.6mw?for?each?increase?in t amb of?1 c?over?25 c. electrical?characteristics (unless?other?specified,?t amb =25 c,?v cc =8v,?pv cc ?=5v,?bias=2.5v,?r l =8
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) characteristics symbol test?conditions min. typ. max. unit quiescent?current i cc -- 30 -- ma actuator?driver output?offset?voltage v oo -50 -- 50 mv maximum?output?amplitude v om 10
?load 3.6 4.0 -- v voltage?gain g v v in =bias?0.2v -- 23.5 -- db spindle?driver output?offset?voltage v oofsp -50 0 50 mv maximum?output?amplitude v omsp ? 8
?load -- 3.5 -- v closed-circuit?voltage?gain g vsp v in =bias?0.2v 13.3 15.5 17.5 db gain?error?by?polarity ? g vsp ?v in =bias?0.2v 0 1 2 db sled?driver offset?voltage v oofsl -100 0 100 mv maximum?output?amplitude v omsl ? 20
?load 7.5 9.0 -- v voltage?gain g vsl v in =bias?0.2v 18 20 22 db stby?logic stby?on?voltage v stby1 ? all?channels?off 0 -- 0.5 v stby?off?voltage v stby2 ? all?channels?on 2.0 -- -- v tray?motor?driver output?saturation?voltage?1 v sat1 upper?+?lower?saturation, i l =200ma 0.7 1.1 1.5 v output?saturation?voltage?1 between?f&r ? v sat1 output?saturation?voltage?1 between?fwd?and?rev - - 0.1 v output?saturation?voltage?2 v sat2 upper?+?lower?saturation, i l =500ma 1.0 1.55 2.2 v output?adjustable?gain?on ?h??side?voltage v vtrh v ctr =2v 7.4 9.2 11 db (to?be?continued)
SA5888 hangzhou?silan?microelectronics?co.,ltd ?rev:1.1???????2006.10.31 http:?www.silan.com.cn??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?3?of?8 (continued) characteristics symbol test?conditions min. typ. max. unit tray?motor?driver?input?logic high?level?input?voltage v ih 1.5 - v cc v low?level?input?voltage v il -0.3 - 0.5 v high?level?input?current i ih v fwd =v rev =5v - 180 270 m a regulator output?voltage vreg i l ?=?500ma 8 1.5 -- 4.0 v output?load?differential ? v rl i l ?=?0~500ma 9 -50 -0 50 mv power?supply?voltage differential ? v vcc (v cc =4.5~8v) il?=?500ma -25 0 25 mv 7 this?device?is?not?designed?for?protection?against?radioactive?rays; 8 it?is?based?on?8550c?pnp?application; 9 it?is?based?on?8550d?pnp?application. pin?configurations 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 28 27 26 25 24 23 17 18 19 20 21 22 SA5888 v i n f c t r b _ 1 r e g o 2 v i n s l + r e g o 1 f w d r e v v c c v o t r - v o t r + v o s l + v o f c - v o s l - v o f c + m u t e t r b _ 2 v i n t k n c v i n l d g n d v c t l n c p v c c v o l d - v o t k - v o l d + v o t k + b i a s pin?descriptions pin?no. pin?name description 1 vinfc focus?driver?input 2 trb_1 connect?to?external?transistor?base 3 rego2 regulator?voltage?output,?connect?to?external?transistor?collector 4 vinsl+ sled?driver?input 5 rego1 regulator?voltage?output,?connect?to?external?transistor?collector 6 fwd tray?driver?forward?input 7 rev tray?driver?reverse?input 8 vcc vcc (to?be?continued)
SA5888 hangzhou?silan?microelectronics?co.,ltd ?rev:1.1???????2006.10.31 http:?www.silan.com.cn??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?4?of?8 (continued) pin?no. pin?name description 9 votr- tray?driver?output(-) 10 votr+ tray?driver?output(+) 11 vosl+ sled?driver?output?(+) 12 vosl- sled?driver?output?(-) 13 vofc- focus?driver?output?(-) 14 vofc+ focus?driver?output?(+) 15 votk+ tracking?driver?output?(+) 16 votk- tracking?driver?output?(-) 17 vold+ spindle?driver?output?(+) 18 vold- spindle?driver?output?(-) 19 pvcc vcc?for?power?block?of?spindle,?tracking?and?focus 20 nc no?connection 21 vctl speed?control?input?of?tray?driver 22 gnd ground 23 vinld spindle?driver?input 24 nc no?connection 25 trb_2 connect?to?external?transistor?base 26 vintk tracking?driver?input 27 bias bias?input 28 mute mute?control notes:??the?indicated?polarities?for?the?output?pins?are?means?polarity?to?inputs. always?ensure?that?v cc ? pvcc function?description operation?notes 1)?this?ic?has?a?built?in?thermal?shutdown?circuit?that?mutes?the?output?current?when?the?chip?temperature reaches?135 c?(typ.).?the?hysteresis?is?set?to?25 c?(typ.),?so?the?driver?circuits?start?up?again?when?the?chip temperature?falls?to?120 c?(typ.). 2)?the?driver?buffer?is?switched?off?when?the?supply?voltage?falls?below?3.6v?(typ.),?and?is?switched?back?on?when the?voltage?reaches?3.8v?(typ.)?again. 3)?bias?pin?(pin27)?should?be?pulled?up?to?more?than?1.2v.?in?case?the?bias?pin?voltage?is?pulled?down?below?0.9v (typ),?the?output?current?is?muted. 4)?the?stand?by?circuit?logic?is?active?low. 5)?mute?is?applied?when?the?buffer?pin?voltage?falls?below?1.0v?(typ.).?normally,?operate?with?this?pin?at1.8v?at least. 6)?connect?a?bypass?capacitor?between?the?bases?of?the?power?supply?pins?of?this?ic. 7)?tray?driver?logic?input:
SA5888 hangzhou?silan?microelectronics?co.,ltd ?rev:1.1???????2006.10.31 http:?www.silan.com.cn??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?5?of?8 fwd(pin6) rev(pin7) votr+(pin10) votr-(pin9) function l l open open open?mode l h l h reverse?mode h l h l forward?mode h h l l brake?mode the?design?of?6,7?pin,?consider?the?driver?upper?and?lower?unable?ducting?at?the?same?time,?be?sure?to?do?it,?the motor?forward?and?reverse?input?by?the?open?mode,?and?the?interval?of?the?open?mode?is?more?than?10ms. output? high? level? voltage ? vol+,? vol- ? ,varied? with? the? motor? controller,? it? can? output? 3? times? voltage? of 21pin,?and?in?high?level.?in?this?time,?the?low?level?voltage?input?power?pipe?as?the?output?saturation?voltage. electrical?characteristics?curves 12 10 8 6 4 2 0 -2 -4 -6 -8 - 10 - 12 -2 -1 0 1 2 ?v cc = 12 v ?pv cc =5v ?bias =2.5v 8 ? 12 ? r l = 20 ? input?voltage :v in (v) fig?1.?thermal?dissipation?curve fig?2.?driver?i/o?characteristics?(spindle) fig?3.?driver?i/o?characteristics?(sled)
SA5888 hangzhou?silan?microelectronics?co.,ltd ?rev:1.1???????2006.10.31 http:?www.silan.com.cn??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?6?of?8 test?circuit typical?application?circuit
SA5888 hangzhou?silan?microelectronics?co.,ltd ?rev:1.1???????2006.10.31 http:?www.silan.com.cn??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?7?of?8 note:?the?value?of?r1?and?r2?in?testing?circuit?and?typical?application?circuit?is?as?the?following?table: solution SA5888?r1?and?r2?are: ''
24k?and?15k ?l 24k?and?15k mtk 20k?and?12k package?outline hsop-28-375-0.8???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????unit:?mm 18 . 05 0. 20 0. 35 0.8 5. 15 0. 10 0. 25 0.1
SA5888 hangzhou?silan?microelectronics?co.,ltd ?rev:1.1???????2006.10.31 http:?www.silan.com.cn??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????page?8?of?8 attachment revision?history data rev description page 2005.04.22 1.0 original 2006.10.31 1.1 modify?the??test?circuit??and??typical?application?circuit?
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