AN8812SC

AN8812 PANASONIC

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ICs for CD/CD-ROM Player Panasonic AN8812SC, AN8812SCR 4ch. Linear Driver IC for CD/CD-ROM @ Overview ANSBLISC bs The AN8812SC and AN8812SCR are 4ch. drivers using ee the power operational-amplifier method. They employ the a tant surface mounting type package superior in radiation char- ao = i acteristics. es a i ao i i = $| iit @ Features ae of! Be * Wide output D-range is available regardless of refer- ax] | Hi ies ts ence voltage on the system SJ Ea ee * Setting of driver input/output gain enabled by external ee elf ee resistance wee, E. LS * 2ch. independently controllable PC (Power Cut) feature 4 . - built-in a 1450.16 * Thermal shut down circuit (with hysteresis) built-in q an 3 * Proper heat of IC controllable by separating the output S| ee DI ENE supply and setting each independently for 2ch. os} 8.4103 1452016 * Construction of 5V supply enabled by external PNP Tr L73103 + Accessary operational amplifier built in Fin sttached28-lead SOP package (HSOPO28-P-0450) * Relatively de by id = ‘elatively easy pattern design by separating and con: ANSELISCR ceo Units centrating the input line and output line 3 an iff Lom 2g iy @ Application =o = i} Actuator for CD/CD-ROM, motor driver at E>} fi ict aut Ep | |i ey i Fe 3 es ee a = ine Se ox = Ee a Ee fl ia y L4si0.15 qi an * ST Tu f= = os) 84103 1.45015 1.73403 Finattached 28-lead SOP package (SOPO28-P-0450) Panasonic

AN8812SC, AN8812SCR ICs for CD/CD-ROM Player @ Block Diagram Wasi sf Ru Ra Rus Ru { Pvc; [vor [vor | vor [vor | vos [vos | vow | vor | Pvc: a {a ja (a jo ja jo ja 1a of |ol Ol ald) ald] ala] tebe DVAIAIAIAIA AIA ion SVec th o ©) [| [| [| ey an) a aa Det Det Det De. Protector SGND []0) a; TT | Veer i : L_ L_ | L_ tg 71d iE} EJ @) MOO. ©) © Ponpi [isi [pcr Psa] Pee Ws 1Ns PGND2 Oo 0 20 0 () Pin No. ina circle, © is for AN8812SC Pin No. in a square, Dis for AN8812SCR Panasonic

ICs for CD/CD-ROM Player AN8812SC, AN8812SCR @ Absolute Maximum Ratings (Ta=25°C) Parameter Symbol Unit Spy Vane a Power Dissipation =) mW Operating Ambient Temperature 30 ~ +85 c Storage Temperature 55 ~+ 150 c Note) For surface mounting on 50 x 50x 1.2mm glass epoxy board ™@ Recommended Operating Range (Ta=25°C) Parameter Symbol Range Supply Voltage 8 Ssv Lav in tage Ran, SV = Operating Supply Voltage Range PVeci, PVcez Note). Set $Vec to the maximum electric potential. @ Electrical Characteristics (Ta=25°C) Parameter Unit No Load Consumption Current PVeci=PVecr=SVee=8V_ | 5] 10] 15] mA Drivers 1 to 4 PVce1 = PVcc2 = SVec = 8V 4 Voliaze PVocr = PVec2 = SVac= 8V. Output Offset Voltage Voor Ri= 8Q, Rin= 10kQ 50 | — | 50 mV PVcei = PVec2 = SVec= 8V PVcer = PVee2 = SVec= 8V . PVoci = PVoc2 = SVec= 8V) Maximum Output Amplitude (-) vi Beko Ree ion | — | so| 44 v PVeci = PVoc2 = SVcc= 8V

1 PVcci= PVec2 = SVce= 8V

Reset Operation Release Supply Voltage Tox= 10HA, Rev= 10kQ. Vv

5 V Regulator

Output Voltage PVccr= PVea= SVec= 8V v Ouiput Load Fluctuation PVoci=PVoa=SVe=8v | -s0| — | so] mv ; - PVcer = PVcc2= SVec Supply Voltage Fluctuation DWy ee | =| —| s| mv OP Amp Input Offset Voltage [Vor] PVea=PVen=sVe=sv | sf —J] ss] av Input Bias Current PVoci= PVoer=SVeo=8V__ | — | 150] soo] na High-Level Output Voltage | Vor | PVca=PVea=8Ve=av | 60f — | — |v Low-Level Output Voltage PVoci= PVon=SVeo=8V_ [| — [| — [ast iv Output Drive Current Sink PVcci=PVee=SVec=8v_ | 20[ — | — | ma Output Drive Current Source PVcai=PVca=SVec=8v | 20[ — | — | ma Heat Protection Circuit Operation Temperature Bgiitrium Value“ [Tom [CT 8 [ Operation ‘Temperature Hysteresis With“ [DT [oT ) c Note 1) Characteristic value in parentheses is a reference value for design but not a guaranteed value. Panasonic

AN8812SC, AN8812SCR ICs for CD/CD-ROM Player @ Characteristic Curve Vec— Maximum Output Amplitude Characteristics Pp-Ta TTT TT f= =F FH “CETTE TT TT aoe a hs a a Sd a ar eer Pt TT tT yt ee Se a ey = of LEE A a am dT AA ASH es a a 2 (DP YTT TTT Fd ae a » HEA HH per fof Att tt pia NSE Pry Trrrrr er 2 ooh a sof JZ EEE 0 Hameo Nk} —J 450000085 oof SEW Pe aE ee i Vex (V) Ambient Temperature Ta (°C) @ Description for Use (Pin No. in the following text are for the AN8812SC. For the AN8812SCR, refer to the block diagram.) « Driver Portion Calculate the driver gain by using the following formula for setting. ~ 60kQ. C=—Re 100)? ‘The power supply for Ch.1 and 2 is supplied from Pin27 and the power supply for Ch.3 and 4 is supplied from Pinl6 independently. Output amplitude is increased by increasing the supply voltage. Set the power supply voltage as necessary. However, always set Pin 14 of Voc to the maximum electric potential. Pins15 and 28 may require a capacitor for ripple removal. As protection functions, Vcc reset circuit, Veer detector and heat protection circuit are incorporated. ‘The Vcc reset circuit operates at approx. 3V and is released at 3.2V, when the supply (Pin14) decreases. For the Vazr detector, the protection function works at approx. 1V (max. 2V). Also, the set temperature for operation of the heat protection circuit is approx. 180°C. In Ch.1 and 2, independently controllable PC (Power Cut) functions are incorporated respectively. + 5V Supply By adding the external PNP transistor, 5V regulator can be constructed. Attach an external capacitor for loop filter to Output PinlO. In Pin9, the base current limiting circuit (typ. 1OmA) is incorporated. When 5V supply is used, the external PNP ‘Tr emitter must be connected to Pinl4 (Vcc pin). * Operational Amplifier When the operational amplifier is not used, make connection as follows : Panasonic

ICs for CD/CD-ROM Player AN8812SC, AN8812SCR m Pin Description Pin No. Symbol | VO Pin Description Equivalent Circuit ANSSI2SC 1 sGND -| SGND pin for driver control Oo circuit Power Vcc pin supplying the 27 2 PVecl current flowing in output power transistors, 22, 23, 24 and 25 Power Voc pin supplying the 16 13 PVec2 current flowing in output power transistors, 18, 19, 20 and 21 ~~ GND pin for output transistors, * 5 PONDI = 22, 23, 24 and 25 @ . GND pin for output transistors, u PGND? = 18, 19, 20 and 21 1 1

28 ZPVecl | O | + PVcc output pin 1

8¥ee 1 1 15 14 | FPVec2 | 0 | F PVec output pin 2 Note) Pin No. shown in the equivalent circuit diagram are only for the AN8812SC. For the AN8812SCR, they must be replaced. Panasonic

AN8812SC, AN8812SCR ICs for CD/CD-ROM Player @ Pin Description Pin No. - - . Symbol | VO Pin Description Equivalent Circuit SVee 2 27 Var ‘Veer input pin @ | fe | |e forename Q ™ ’ lz [»|[:| taper pinof Dever ® | : 4 25 Pcl Power cut input pin of Driver 1 @ ffm fs eememcs 18 vo4- Reverse rotation output pin of Driver + Note) Pin No. shown in the equivalent circuit diagram are only for the AN8812SC. For the AN8812SCR, they must be replaced. Panasonic

ICs for CD/CD-ROM Player AN8812SC, AN8812SCR @ Pin Description Pin No. . Symbol | VO Pin Description Equivalent Circuit ANRIRSC Output pin for controlling the 9 20 © | power transistor base of SV regulator Monitor input pin for SV 10 - Vovox T | fegulator output ul -|-]- ‘Output pin of operational amplifier a PD ” IN 1 _ | Inventing input pin of operational amplifier . Non-inverting input pin of opera- 13 - IN+ T | tional amplifier SVcc pin for driver control 4 1s SVce circuit, not connected with power |_ (Gs Vee pin Note) Pin No. for the AN8812SC are only shown in the equivalent circuit diagram. For the AN8812SCR, they must be replaced. Panasonic

AN8812SC, AN8812SCR ICs for CD/CD-ROM Player @ Cautions for use + AN8812SC R Ru Re Ru ® 7 6 oS mM 2 2 A 0 19 18 17 16 15 AN8812SC 1203 6 5s 6 7 ok 8 tt ©) 2) ©) © ver When the AN8812SC is used, take into account the following cautions and follow the power dissipation characteristic curve, (1) Load current, In: flowing in loads Re and Riz is supplied through Pin27 Ie Weal | Wa Val eR Rar (2) Load current, Irs flowing in loads Ris and Ria is supplied through Pin16, Tew LYneVaol | IVi-Viel eR Ra (3) Dissipation increase (AP,) inside the IC (power output stage) caused by loads Rei, Riz, Res and Ri is as follows : 1V2s-Vasl IVay-Vaal AP3= (PVcci—!Ves-Voal) X —S—* + (PVoc1—1Vas—Veel) x —S Ru Ra IVa Veo! IVip-Visl + (PVec2~V21-Vool) x 2 + (PVce2=1Vip-Visl) x 2 Ra Ru (4) Dissipation increase (AP,) inside the IC (signal block supplied from Pin14) caused by loads Ria, Ri2, Ris and Ria is almost a follows : vi Ve APa= 34> (28Vect|Vas-Vail) + [= (28Vce+1V2s-Verl) 1 2 Vs Va + BR ASVee# Vai -Vaol) + =e 2SVec+ |Vie-Vis) : 4 (5) Dissipation increase inside the IC during driver running is APs-+APs (6) Inside loss under no load (Py1) is almost as follows : Par= SVcex U(SVec) + PVoci X MPVeet) + PVoca I(PVce2) (7) Entire IC inside loss (AP,) is almost as follows : Py= Pai + APs + APS Panasonic

ICs for CD/CD-ROM Player AN8812SC, AN8812SCR @ Cautions for use + AN8812SCR £ Oo © OO a $s : i 7 6 8 MB 2 a 0 9 17 16 15 AN8812SCR [ee Ru Ru Ro Ru When the AN8812SCR is used, take into account the following cautions and follow the power dissipation characteristic curve. (1) Load current, Ip; flowing in loads Ru, and Ri. is supplied through Pin2. 1 1Va—Vsl 1Ve—Vol 8 RR (2) Load current, Ip: flowing in loads Ris and Ris is supplied through Pin13. n= IVs—Vol + WVio-Vul ee Re Ru (3) Dissipation increase (AP,) inside the IC (power output stage) caused by loads Ri, Riz, Rus and Ruy is as follows : 1V4—Vsl 1Ve~— Val APs = (PVoci—!V4-Ws!) x = +(PVcci—!Ve-Wrl) x = IVs—Vol [Vio-Viil + (PVce2—1Vg—Vol) x SR + (PVce21Vio-Viil) x A Ro Rus (4) Dissipation increase (APs) inside the IC (signal block supplied from Pin15) caused by loads Rui, Ria, Ris and Ris is almost as follows : Vi Vo APs =3 FR, 2SVoc+ WVs-Vs!) + Be SVect !Ve-Va!) q 2 Vs oe Va 5g + z (28Vec+1Vs—Vol) + a (28Voc+!Vio-Vuil) (5) Dissipation increase inside the IC during driver running is APa-+ APs. (6) Inside loss under no load (P,)) is almost as follows : Pat = SVccex Isveo+ PVoct X Ievect + PVcceX levees (7) Entire IC inside loss (P,) is almost as follows : Pa = Pai + APa+ APs Panasonic