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TDA5149 Datasheet(PDF) 4 Page - NXP Semiconductors |
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TDA5149 Datasheet(HTML) 4 Page - NXP Semiconductors |
4 / 28 page 1996 May 06 4 Philips Semiconductors Product specification 12 V Voice Coil Motor (VCM) driver and spindle motor pre-driver combination chip TDA5149G Fig.2 Block diagram of the VCM and RESET circuits. handbook, full pagewidth MGE656 M FOLLOWER FOLLOWER PREAMP PREAMP PARK CIRCUITRY SENSE BUFFER REFERENCE CURRENT GENERATOR REFERENCE VOLTAGE GENERATOR LATCH CIRCUITRY LACTIVE LHOLD from the serial port TEMPERATURE SENSOR POWER- ON RESET GENERATOR OPAMP to the PARK circuit COMP COMP +5 V +12 V +12 v from the serial port from the POR circuit Ccomp R comp VCMIN2 VCMIN1 Rfb VCMSENSOUT VCMref Vref(o) Iref POR12ADJ POR5ADJ VCM_CONT1 VCM_CONT2 AMPIN − AMPIN + AMPOUT CLAMP PGND1 VDDV VCM+ VCM− PGND2 VCMSENSEL VCMSENSEH latch LATCHACTIV LATCHHOLD TEMPMON RESETP RESETA PORDELAY 26 35 34 37 52 53 42 48 43 44 39 36 32 38 33 31 30 40 41 50 46 49 17 29 28 100 nF R8 from the spindel 27 Ω 100 nF 27 Ω Rin2 Rin1 VCM input VCM reference input TDA5149G disable park brake VGAINSEL VCMref R R * 20 k Ω 23 k Ω 50 k Ω 10 k Ω 10 k Ω 50 k Ω − + − + − + + − − + − + +5 V +12 V |
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