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AN8472SA - Spindle motor driver

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General Description

s Pin No.

1 2 3 4 5 6 7 8 9 10 11 12 Symbol VH H3L H3H H2L H2H H1L H1H EC ECR FG Start VPUMP Description Hall bias pin Hall element-3 negative input pin Hall element-3 positive input pin Hall element-2 negative input pin Hall element-2 positive input pin Hall element-1 negative input pin Hall element-1 positive input pin Torque command input pin Torque command reference input pin FG signal output pin Start/stop changeover pin Booster pin Pin No.

13 14 15 16 17 18 19 20 21 22 23 24 Symbol BC1 BC2 BC3 BC4 GND VDD VM2 N.C.

Overview

ICs for Compact Disc/CD-ROM Player AN8472SA Spindle motor driver IC for optical disk s Overview The AN8472SA is a high performance IC suited for driving a spindle motor of an optical disk such as CD-ROM, DVD etc.

Small outline package can be used due to reduced power consumption by adopting the direct PWM drive system.

32 11.0±0.3 17 Unit: mm 6.1±0.

Key Features

  • 3-phase full-wave 120° duty factor system.
  • Low power consumption due to a direct PWM system.
  • D-MOS transistor with low ON resistance (0.6 Ω typ. ) on the output stage.
  • With start and stop pins.
  • Thermal shut-down function built-in.
  • With FG output pin.
  • Reverse breaking by EC/ECR voltage.
  • With Hall bias pin.
  • Surface-mount small package 0.65±0.10 8.1±0.3 1 16 0.2.
  • 0.05 1.5±0.2 +0.10 (0.625) 0.65 0.3.

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