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Электронный компонент: FAN8024BD

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2002 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Rev. 1.0.1
Features
2-Channel BTL driver with current feedback
2-Channel BTL DC motor driver
Built-in thermal shutdown circuit
Built-in mute circuit
Operating supply voltage: 4.5~13.2V
Description
The FAN8024BD is a monolithic IC, suitable for 2-ch BTL
DC motor drivers and 2-ch motor drivers with current
feedback which drive the focus and tracking actuators of a
CD- media system.
28-SSOPH-375
Typical Applications
Compact disk ROM (CD-ROM)
Compact disk RW (CD-RW)
Digital video disk ROM (DVD-ROM)
Digital video disk RAM (DVD-RAM)
Digital video disk player (DVDP)
Other compact disk media
Ordering Information
Device
Package
Operating Temp.
FAN8024BD
28-SSOPH-375
-25
C ~ 85
C
FAN8024BDTF 28-SSOPH-375
-25
C ~ 85
C
FAN8024BD
4-Channel Motor Driver
FAN8024BD
2
Pin Assignments
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
STB
Y
RE
F
IN
4
C
AP4
.1
C
AP4
.2
IN
3
V
CCGND
P
V
CC2
FB4
P
G
ND2
DO3
-
DO3
+
DO4
-
DO4
+
IN
1
C
AP1
.1
CA
P
1
.
2
IN
2
.
1
IN
2
.
2
OUT
2
FB1
VC
C
P
V
CC1
P
G
ND1
DO2
-
DO2
+
DO
1
-
DO1
+
FAN8024BD
(GND)
FIN
FIN
(GND)
FAN8024BD
3
Pin Definitions
Pin Number
Pin Name
I/O
Pin Function Description
1
IN1
I
CH1 input
2
CAP1.1
-
Connection with capacitor
3
CAP1.2
-
for CH1
4
IN2.1
I
OP-AMP CH2 input(+)
5
IN2.2
I
OP-AMP CH2 input(-)
6
OUT2
O
OP-AMP CH2 output
7
FB1
I
Feedback for CH1
8
VCC
-
Signal Vcc
9
PVCC1
-
Power Supply 1
10
PGND1
-
Power Ground 1
11
DO2
-
O
Drive2 Output (-)
12
DO2+
O
Drive2 Output (+)
13
DO1
-
O
Drive1 Output (-)
14
DO1+
O
Drive1 Output (+)
15
DO4+
O
Drive4 Output (+)
16
DO4
-
O
Drive4 Output (-)
17
DO3+
O
Drive3 Output (+)
18
DO3
-
O
Drive3 Output (-)
19
PGND2
-
Power Ground 2
20
FB4
-
Feedback for CH4
21
PVCC2
-
Power Supply 2
22
VCCGND
-
Vcc ground
23
IN3
I
CH3 input
24
CAP4.2
-
Connection with capacitor
25
CAP4.1
-
for CH4
26
IN4
I
CH4 input
27
REF
I
Bias voltage input
28
STBY
I
Stand-by input
FAN8024BD
4
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
ST
BY
RE
F
IN
4
CA
P
4
.
1
CA
P
4
.
2
IN
3
V
CCGND
P
V
CC2
FB
4
P
G
ND2
DO3
-
DO3
+
DO4
-
DO4
+
IN
1
C
AP1
.1
C
AP1
.2
IN
2
.
1
IN
2
.
2
OUT
2
FB1
VC
C
P
G
ND1
DO2
-
DO2
+
DO1
-
DO1
+
P
V
CC1
-
+
-
+
1
0
K
2
0
K
7
.
5
K
X2
7.5K
Loading
Driver
Actuator
Driver

-
+
10K
15K
-
+
-
+
2
0
K
1
0
K
7
.
5
K
7.5K
-
+
X2

-
+
10K
25K
Sled
Driver
Actuator
Driver
PVCC2
VCC PVCC1
VCC
PVCC1
PVCC2
TSD
GND
GND
FAN8024BD
5
Equivalent Circuits
ERROR AMP INPUT
STAND-BY INPUT
ERROR AMP OUTPUT
SIGNAL REFERENCE INPUT
POWER AMP OUTPUT
3K
3K
5
4
1K
1K
2K
2K
28
50
6
50
27
50
11
12
13
14
16
17
18
15