FAN8420D3

www.fairchildsemi.com FAN8420D3 3-Phase BLDC Motor Driver Features 3-phase, full-wave, linear BLDC motor driver Power save at stop mode Built-in current limiter Built-in TSD (Thermal shutdown) circuit Built-in 3X and 1X hall FG output Built-in hall bias circuit Built-in rotational direction detector Built-in reverse rotation preventer Built-in short braker Corresponds to 3.3V DSP Description The FAN8420D3 is a monolithic IC, suitable for a 3-phase spindle motor driver of a CD-media system. 28-SSOPH-375SG2 28-SSOPH-375 Typical Applications Compact disk ROM (CD-ROM) spindle motor Compact disk RW (CD-RW) spindle motor Digital video disk ROM (DVD-ROM) spindle motor Digital video disk RAM (DVD-RAM) spindle motor Digital video disk Player (DVDP) spindle motor Other compact disk media spindle motor Other 3-phase BLDC motor Ordering Information Device Package Operating Temp. −25°C ~ +75°C −25°C ~ +75°C FAN8420D3 28-SSOPH-375SG2 FAN8420D3TF 28-SSOPH-375SG2 Rev. 1.0.1 Oct. 2000. ©2000 Fairchild Semiconductor International FAN8420D3 Pin Assignments FG1X FG3X VCC ECR CS1 VM NC EC NC 16 13 H3+ 28 27 26 25 24 23 22 21 20 19 18 17 15 FAN8420D3 1 NC 2 A3 3 NC 4 A2 5 NC 6 NC 7 A1 FIN(GND) 8 GND 9 H1+ 10 H1− 11 H2+ 12 H2− 14 H3− Pin Definitions Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Pin Name NC A3 NC A2 NC NC A1 GND H1+ H1− H2+ H2− H3+ H3− VH NC PC1 SB FG3X DIR ECR EC I/O O O O I I I I ...