ChipFind - документация

Электронный компонент: FAN8423D3TF

Скачать:  PDF   ZIP
2000 Fairchild Semiconductor International
www.fairchildsemi.com
Rev. 1.0.1
Oct. 2000.
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
Package
Operating Temp.
FAN8423D3
28-SSOPH-375SG2
-
25
C ~ +75
C
FAN8423D3TF 28-SSOPH-375SG2
-
25
C ~ +75
C
FAN8423D3
3-Phase BLDC Motor Driver
FAN8423D3
2
Rev. 1.0.1
Oct. 2000.
Pin Assignments
Pin Definitions
Pine Number
Pin Name
I/O
Pin Function Description
1
NC
-
No connection
2
A3
O
Output (A3)
3
NC
-
No connection
4
A2
O
Output (A2)
5
NC
-
No connection
6
NC
-
No connection
7
A1
O
Output (A1)
8
GND
-
Ground
9
H1+
I
Hall signal (H1+)
10
H1-
I
Hall signal (H1-)
11
H2+
I
Hall signal (H2+)
12
H2-
I
Hall signal (H2-)
13
H3+
I
Hall signal (H3+)
14
H3-
I
Hall signal (H3-)
15
VH
I
Hall bias
16
NC
-
No connection
17
PC1
-
Phase compensation capacitor
18
SB
I
Short brake
19
FG3X
O
FG waveform (3X)
20
DIR
O
Rotational direction output
21
ECR
I
Output current control reference
22
EC
I
Output current control voltage
23
S/S
I
Power save (Start/Stop switch)
24
FG1X
O
FG waveform (1X)
25
VCC
-
Supply voltage (Signal)
26
NC
-
No connection
27
VM
-
Supply voltage (Motor)
28
CS1
-
Output current detection
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
FAN8423D3
NC
A3
NC
A2
NC
A1
NC
GND
H1+
H1-
H2+
H2-
H3+
H3-
CS
1
VM
NC
VC
C
S/
S
EC
FG
1
X
ECR
DI
R
FG3X
SB
PC1
NC
VH
FIN(GND)
FIN(GND)
FAN8423D3
3
Rev. 1.0.1
Oct. 2000.
Internal Block Diagram
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
NC
A3
NC
A2
NC
A1
GND
NC
H1
+
H1
-
H2
+
H2
-
H3
+
H3
-
CS
1
VM
NC
VC
C
FG
1
X
EC
EC
R
S/
S
DI
R
FG
3
X
SB
PC
1
NC
VH
FG1X
Ge
ner
at
o
r
St
ar
t
St
o
p
-
+
Reve
r
s
e Ro
t
a
-
ti
o
n
L
ogi
c
Shor
t
Br
ake
Ha
l
l
C
o
m
m
u
ta
ti
o
n
Sel
e
ct
or
Det
e
c-
to
r
Di
r
e
c
-
tio
n
Upper
Di
st
r
i
b
u
-
Lo
wer
Di
st
ri
bu-
Hall Amp
TSD
Current Sense
Amp
Output
Current Limit
Absolute
Values
F
G
3
X
Gen
e
r
a
t
o
r
GND
GND
FAN8423D3
4
Rev. 1.0.1
Oct. 2000.
Equivalent Circuits
Hall Input
Driver Output
Torque Control Input
Hall Bias Input
Start/stop Input
Short Brake Input
Fg Output
Dir Output
1K
11
9
13
12
14
10
1K
50
50
28
2
27
4
7
+
-
21
22
50
50
15
100K
23
40K
30K
50
18
1K
20K
50
10K
Vcc
24
50
19
30K
Vcc
20
50
FAN8423D3
5
Rev. 1.0.1
Oct. 2000.
Absolute Maximum Ratings (Ta = 25



C)
NOTE:
1. When mounted on a 76.2mm
114mm
1.57mm PCB (Phenolic resin material).
2. Power dissipation reduces 16.6mW/
C for using above Ta = 25
C
3. Do not exceed P
D
and SOA (Safe operating area).
Power Dissipation Curve
Recommended Operating Conditions (Ta = 25



C)
Parameter
Symbol
Value
Unit
Maximum supply voltage (Signal)
V
CCmax
7
V
Maximum supply voltage (Motor)
V
Mmax
15
V
Power dissipation
P
D
2.5
note
W
Maximum output current
I
Omax
1.3
A
Operating temperature range
T
OPR
-25 ~ +75
C
Storage temperature range
T
STG
-55 ~ +150
C
Parameter
Symbol
Min.
Typ.
Max.
Unit
Supply Voltage
V
cc
4.5
5
5.5
V
Motor Supply Voltage
V
M
3.5
12
14
V
3,000
2,000
1,000
0
0
25
50
75
100
125
150
175
Pd (mW)
Ambient temperature, Ta [
C]
SOA