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FAN8423D3

Fairchild Semiconductor
Part Number FAN8423D3
Manufacturer Fairchild Semiconductor
Description 3-Phase BLDC Motor Driver
Published Mar 30, 2005
Detailed Description www.fairchildsemi.com FAN8423D3 3-Phase BLDC Motor Driver Features • • • • • • • • • • 3-phase, full-wave, linear BLDC...
Datasheet PDF File FAN8423D3 PDF File

FAN8423D3
FAN8423D3

Overview
www.
fairchildsemi.
com FAN8423D3 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 5 V DSP Description The FAN8423D3 is a monolithic IC, suitable for a 3-phase spindle motor driver of a CD-media system.
28-SSOPH-375SG2 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 FAN8423D3 Package 28-SSOPH-375SG2 Operating Temp.
−25°C ~ +75°C −25°C ~ +75°C FAN8423D3TF 28-SSOPH-375SG2 Rev.
1.
0.
1 Oct.
2000.
©2000 Fairchild Semiconductor International FAN8423D3 Pin Assignments FG1X FG3X VCC ECR CS1 NC EC NC 16 13 H3+ SB VH 15 14 H3FIN(GND) PC1 17 12 H2S/S DIR 20 VM 27 28 26 25 24 23 22 21 19 18 FAN8423D3 1 NC 2 A3 3 NC 4 A2 5 NC 6 NC 7 A1 FIN(GND) 8 GND 9 H1+ 10 H1- 11 H2+ Pin Definitions Pine Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 2 Pin Name NC A3 NC A2 NC NC A1 GND H1+ H1H2+ H2H3+ H3VH NC PC1 SB FG3X DIR ECR EC S/S FG1X VCC NC VM CS1 I/O O O O I I I I I I I I O O I I I O No connection Output (A3) No connection Output (A2) No connection No connection Output (A1) Ground Hall signal (H1+) Hall signal (H1-) Hall signal (H2+) Hall signal (H2-) Hall signal (H3+) Hall signal (H3-) Hall bias No connection Phase compensation capacitor Short brake FG waveform (3X) Rotational direction output Output current control reference Output current control voltage Power save (Start/Stop switch) FG waveform (1X) Supply voltage (S...


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