SI9993CS

Si9993CS Vishay Siliconix Si9993 12-V VCM/Spindle Motor Driver for Large Capacity HDD FEATURES 12-V Motor Supply Blocking Schottky Diode Replaced by External Synchronous Rectifier Spindle Motor Driver Features: – External LITTLE FOOT® Drivers for High Current/Power Application – Constant Off-Time PWM Current Drive Minimizing Power Dissipation – Sensorless Motor Commutation Immune to PWM Noise – Externally Controlled Start-Up/Run Function – Low-Jitter Commutation Output for External Speed Control – Level Shifting Buffer Amplifier for PWM DAC – Adjustable Output Slew Rate Control – Unique Commutation Driver Minimizing Audible Noise – Programmable Phase Advance for High Speed Motor – Speed Triggered Motor Brake for Enhanced Reliability Voice Coil Motor Driver Features: – External LITTLE FOOT Drivers for High Current/Power Application – Low Crossover Distortion in Linear Mode (Class AB) – Selectable Constant Frequency PWM or Linear Operation – Programmable Retract Voltage Clamp – Level Shifting Buffer Amplifier for PWM DAC – Direct VCM Retract Control Input – Current Sense Output for Enhanced Servo Control – Fixed PWM Output Slew Rate Limit System Manager Features: – Power-On Reset Generator – Adjustable System Voltage Monitor – 2.3/5.0-V±5%, 150 ppm/°C Reference Output for External PWM DAC – Programmable Timer for Head Retract and Spindle Brake Delay – Built-In Test Ability 3-Wire Synchronous Serial Data Interface Internal Registers and Address Decoding with Full ...