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
Weight: 0.63 g (typ.)
1
2003-10-07