TA8493F Datasheet, PDF (1/25 Pages) Toshiba Semiconductor – 3-PHASE FULL WAVE BRUSHLESS DC MOTOR DRIVER IC FOR CD-ROM DRIVES

TA8493F/AF/BF
Toshiba Bipolar Linear Integrated Circuit Multi-Chip
TA8493F, TA8493AF, TA8493BF
3-Phase Full Wave Brushless DC Motor Driver IC for CD-ROM Drives
These 3-phase, full-wave, brushless DC motor driver ICs have
been developed for use in CD-ROM drive spindle motors. The
TA8493F/ AF/ BF contain in its upper stage a discrete power
transistor (P-ch-MOS) and uses direct PWM control system,
which enables the IC to provide superior thermal efficiency.
Furthermore, the multi-chip structure of this device facilitates
dispersion of the heat generated inside the package, making it
possible to suppress heat concentration.
Features
· Multi-chip structure (3 × 2SJ465 chips built-in)
· Direct PWM control system
· Drive system: 120°drive system (TA8493F/BF)
: 180°drive system (TA8493AF)
· Built-in current limiter: ILIM = 0.7 A (typ.) (at RF = 0.33 Ω)
· Built-in reversing brake/short brake functions
· FG signal output (using hall element output signal)
· Built-in hall bias
· Built-in thermal shutdown circuit
· Package: MFP-30
Weight: 0.63 g (typ.)
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2002-01-31