TA8499F

The TA8499F is a kind of 3-phase, full-wave, brushless DC motor driver IC which has been developed for use in CD/DVD-ROM drive spindle motors and it also contains 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.

The features of TA8499F can be summarized as (1)multi-chip structure (3 2SJ465 chips built-in); (2)direct PWM control system; (3)built-in current limiter: ILIM =0.8A (at RF: = 0.33); (4)built-in reversing brake/short brake functions; (5)FG signal output (using hall element output signal); (6)built-in hall bias; (7)built-in thermal shutdown circuit; (8)package: MFP-30.

The absolute maximum ratings of TA8499F are (1)power supply voltage VCC/VM: 7/16V; (2)output current IO: 1.5A; (3)hall bias terminal input current HB: 30mA; (4)power dissipation PD (Note 1: unmounted): 1.0W; (5)junction temperature Tj: 150°C; (6)operating temperature Topr: -20~75°C; (7)storage temperature Tstg: -55~ 150°C.