la6502 Sanyo Semiconductor Corporation, la6502 Datasheet
la6502
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la6502 Summary of contents
Page 1
... CD and DVD Spindle driver : LA6502 3-phase linear sensor-less drive BTL 4ch Overview This LA6502 is a 5ch driver for CD and DVD Spindle driver : 3-phase linear sensor-less drive BTL 4ch. Features • Spindle driver block 1) 3-phase sensor-less motor driver 2) Soft switching drive ...
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... Thread driver (AMP3) Output saturation voltage V O SAT_3 Input voltage range CTL pin input current Current gain GVCO_3 Output offset voltage V O OFF_3 LA6502 Conditions SPINDLE output SLED output FOCUS, TRACKING output LOADING output Topr Tstg Conditions SPINDLE, SLED, LOADING power supply ...
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... Note) The pre-OPAMP in the previous stage is used as buffer. MUTE function MUTE1 : H SPINDLE : ON MUTE2 : H FOCUS, TRACKING, SLED : ON MUTE3 : H LOADENG : ON Package Dimensions unit : mm (typ) 3278 17.8 (6. 0.65 1.3 0.2 (0.45) 1.5 LA6502 Conditions 0.6A, Source+Sink VREF = 1.65V Note 0.2A, Source+Sink VREF = 1.65V Note 1mA, Sink Mode 2.5 2.0 1.7 1.5 1.0 0.2 0.8 0.5 0 -20 ...
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... AMP2OUT OUT2R OUT2F OUT1R OUT1F OUT3R MGND MGND OUT3F OUT4R OUT4F WOUT UOUT MCOM LA6502 LA6502 GND VOUT SPRF Top view 48 MUTE1 47 MUTE2 46 MUTE3 45 NC AMP1IN + 44 ...
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... SPC1 SPC2 0.015μF PLL VCO 0.47μF SPVCOIN 560kΩ SPCX 0.01μF 200Ω + SPCTL -- V REF 200Ω FR 0.1μF FC LA6502 VF) Rotor position detection circuit Timing Soft switching drive circuit REF AMP3IN - - - AMP3IN + + AMP3OUT OUT3F - - + ...
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... Sample Application Circuit 0.1μF 0.1μF 0.1μF Note) The external constant is for reference only and the optimum constant may differ from one motor to another. LA6502 (Spindle Block) AMP2IN + 1 MUTE1 48 AMP2IN - 2 MUTE2 47 3 AMP2OUT MUTE3 AMP1IN + AMP1IN - OUT2R ...
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... OP-AMP inverted input pin. 3 AMP2OUT OP-AMP output pin. 8 OUT2F BTL-AMP Forward output pin 7 OUT2R BTAL-AMP Reverse output pin AMP1IN + 44 OP-AMP non-inverted input pin. AMP1IN - 43 OP-AMP inverted input pin. LA6502 Pin voltage Equivalent circuit 4.5 to 13.8 4 300Ω 300Ω ...
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... BTL-AMP Forward output pin. 11 OUT3R BTL-AMP Reverse output pin. AMP4IN + 30 non-inverted input pin. AMP4IN - 29 BTL-4ch reference voltage pin 16 OUT4F BTL-AMP Forward output pin. 15 OUT4R BTL-AMP Reverse output pin. LA6502 Pin voltage Equivalent circuit 300Ω 0. 300Ω ...
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... Detects the coil voltage waveform with reference to this voltage. 39 SPC1 Spindle triangular wave generating capacitor connection pin With this triangular wave, the coil output waveform is soft switched. 40 SPC2 LA6502 Pin voltage Equivalent circuit 300Ω 200Ω ...
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... BTLAMP internal VREF buffer input pin. 41 SPFGO Spindle motor counter electromotive voltage detection FG output pin (synthesis of three phases) 37 SPVCOIN Drum block VCO circuit voltage input pin PCOUT pin voltage is filtered with CR for input. LA6502 Pin voltage Equivalent circuit 38 1kΩ 300Ω 3.3V 300Ω 1kΩ ...
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... This catalog provides information as of June, 2007. Specifications and information herein are subject This catalog provides information as of January, 2007. Specifications and information herein are subject to change without notice. to change without notice. LA6502 Pin voltage Equivalent circuit 40kΩ ...