3-Phase BLDC Motor Driver
www.fairchildsemi.com
FAN8420D3
3-Phase BLDC Motor Driver
Features
• • • • • • • • • • 3-phase, full-wave, linear BLDC...
Description
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 ...
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