Description
This COMBO Driver for HDD application consists of Sensorless Spindle Driver and BTL type VCM Driver.
Bipolar Process is applied and a “Soft Switching Circuit” for less commutation noise and a “Booster Circuit for smaller Saturation Voltage of Output Transistor are also implemented.

Features
• Soft Switching Driver
    Small Surface Mount Package: FP-80E (QFP80 Pin)
    Low thermal resistance: 35°C/W with 6 layer multi glass-epoxy board
• Low output saturation voltage
    - Spindle 0.8 V Typ (@1.0 A)
    - VCM 0.8 V Typ (@0.8 A)

Functions
• 1.8 A Max/3-phase motor driver
• 1.2 A Max BTL VCM Driver
• Auto retract
• Soft Switching Matrix
• Start up circuit
• Booster
• Speed Discriminator
• Internal Protector (OTSD, LVI)
• POR
• Power monitor