TDA5147CH

INTEGRATED CIRCUITS DATA SHEET TDA5147CH 12 V Voice Coil Motor (VCM) driver and spindle motor drive combination chip Preliminary specification File under Integrated Circuits, IC11 1997 Jul 09 Philips Semiconductors Preliminary specification 12 V Voice Coil Motor (VCM) driver and spindle motor drive combination chip FEATURES Spindle motor driver Internal 2 A peak current power drivers Low Rds(on) (1 Ω maximum total) for high, low and isolation drivers Induction sense start-up option External current sense resistor Soft switching on both upper and lower drivers Programmable linear or Pulse Width Modulation (PWM) spindle mode Provide spindle active dynamic braking mode. Voice coil motor driver 1.2 A VCM power driver Maximum of 1 V drop across the power driver at 0.8 A External current sense resistor, with sense amplifier External current control loop compensation 15 kHz (typ.) VCM current control loop bandwidth Three modes of operation: – Enable VCM – Retract – Disable Brake after park circuitry. Power monitor and retract circuit +5 V and +12 V power monitor threshold accuracy ±2% Hysteresis on both power monitor comparators Internal voltage reference: precision 2% Buffered reference voltage output pin ORDERING INFORMATION TYPE NUMBER TDA5147CH PACKAGE NAME QFP64 DESCRIPTION plastic quad flat package; 64 leads (lead length 1.6 mm); body 14 × 14 × 2.7 mm TDA5147CH Retract circuit operates down to 2 V Internal thermal sense circuitry wit...