FAN8620B Datasheet, PDF (3/35 Pages) Fairchild Semiconductor – 12V Spindle Motor and Voice Coil Motor Driver

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
29
30
31
32
Pin Name
PWMSF
CFSF
ADJ
SENSE5
VDD
FG
VREF
MCLK
HALFVCC
POR
CDLY
GAINSEL
PWMH
PWML
CFVCM
CRET
VCC
FILOUT
SENSE
CRET2
PVCC2
VCM(-)
SUBGND
RRET
SENSEOUT
PGND
VCM(+)
ERRIN
VDD
ERROUT
SUBGND
W
FAN8620B
I/O
Pin Function Description
I
PWM input for spindle soft commutation
-
Capacitor for spindle PWM soft commutation filter
-
Reference voltage adjustable
-
Adjustable threshold voltage to 5V
-
5V power supply
O
Frequency generation to spindle speed
O
Voltage reference output for ASIC power
I
Clock from ASIC for commutation
O
1/2 VCC pin
O
Fault output(Power On Reset & Thermal Shut Down)
-
Delay capacitor for power on reset
I
VCM current Amplifier gain selection
I
PWM signal input (MSB)
I
PWM signal input (LSB)
-
Filter capacitor for VCM PWM control
-
Delay capacitor for retract
-
12V power line
O
VCM PWM output
I
VCM current sense Amplifier input
-
Power for VCM retract
-
12V power line for VCM output
O
VCM negative output
-
Ground
-
Adjustable maximum retract current
O
VCM current sense Amplifier output
-
Ground
O
VCM positive output
I
VCM error Amplifier negative input
-
5V power supply
O
VCM error Amplifier output
-
Ground
O
Spindle motor W phase output
3