FAN8025G3 [FAIRCHILD]
5-Channel Motor Driver; 5通道马达驱动器
| 型号： | FAN8025G3 |
| 厂家： | 
FAIRCHILD SEMICONDUCTOR |
| 描述： | 5-Channel Motor Driver |
| 文件： | 总13页 (文件大小：183K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
www.fairchildsemi.com
FAN8025G3
Features
Description
• 2-Channel BTL drivers with current feedback
• 2-Channel BTL DC motor drivers
• 1-Channel Logic input loading driver
• Built-in thermal shutdown circuit
• Built-in mute circuit
The FAN8025G3 is a monolithic IC, suitable for 2-ch BTL
DC motor drivers, 2-ch motor drivers with current feedback
which drive the focus and the tracking actuator and 1-ch
logic input loading driver.
• Operating supply voltage: 4.5~13.2V
28-SSOPH-375SG2
Typical Applications
Ordering Information
• Compact disk ROM (CD-ROM)
• Digital video disk player (DVDP)
• Video compact disk player(VCDP)
• Other compact disk media
Device
Package
Operating Temp.
28-SSOPH-
375SG2
FAN8025G3
-35 °C ~ 85 °C
28-SSOPH-
375SG2
FAN8025G3X
-35 °C ~ 85 °C
X:Tape & Reel type
Rev. 1.0.0
©2003 Fairchild Semiconductor Corporation
FAN8025G3
Pin Assignments
(GND)
FIN
27
26
25
24
23
22
21
20
19
18
17
16
15
28
FAN8025G3
1
2
3
7
6
4
5
8
9
12
10
11
13
14
FIN
(GND)
2
FAN8025G3
Pin Definitions
Pin Number
Pin Name
I/O
A
A
A
A
A
A
A
P
A
A
I
Pin Function Description
1
IN5
CAP5.1
CAP5.2
FB5
CH5 input
2
Connection with capacitor
for CH5
3
4
Feedback for CH5
Feedback for CH4
Connection with capacitor
for CH4
5
FB4
6
CAP4.1
CAP4.2
SGND
IN4
7
8
Signal ground
9
CH4 input
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
CTL
CH1 speed control input
CH1 forward input
CH1 reverse input
Drive1 Output (+)
Drive1 Output (−)
Drive2 Output (−)
Drive2 Output (+)
Drive3 Output (−)
Drive3 Output (+)
Power for channel 1,2 and 3
CH3 input
FWD
REV
I
DO1+
DO1−
DO2−
DO2+
DO3−
DO3+
VCC1
IN3
O
O
O
O
O
O
P
A
A
A
I
IN2
CH2 input
REF
Bias voltage input
CH2,3,4 and 5 mute signal input
Power for channel 4and 5
Drive4 Output (+)
Drive4 Output (−)
Drive5 Output (+)
Drive5 Output (−)
MUTE
VCC2
DO4+
DO4−
DO5+
DO5−
P
O
O
O
O
3
FAN8025G3
Internal Block Diagram
VCC1
VCC1
24 VCC2
VCC1
20k
10k
9
IN4
25
26
DO4+
DO4-
7.5k
7.5k
6
7
CAP4.1
CAP4.2
X2
5
FB4
VCC1
VCC1
VCC1
20k
10k
1
IN5
27
28
DO5+
DO5-
7.5k
7.5k
2
3
CAP5.1
CAP5.2
X2
4
FB5
TSD
8
SGND
IN3
19
VCC1
VCC1
20k
20k
18 DO3+
10k
10k
20
DO3-
17
VCC1
16 DO2+
21
IN2
DO2-
15
10
11
12
CTL
FWD
REV
13 DO1+
14
DO2-
23
22
MUTE
REF
4
FAN8025G3
Equivalent Circuits
CH2/3/4/5 Inputs
Current Feedback Amp Outputs
VCC1
VCC1
VCC1
VCC1
10K
10K
1K
1K
50
Ref
1
9
7
3
50
20
21
10K
Current Feedback Amp Compensation Inputs
VCC1
VCC1
7.5K
2
6
7.5K
Current Feedback Inputs
VCC1
10K
VCC1
10K
20K
20K
4
5
Drive
output -
5
FAN8025G3
Equivalent Circuits(continued)
CH1 Inputs(FWD/REV)
CH1 Control Input(CTL)
VCC1
VCC1
VCC1
30K
11
40K
10K
12
10
30K
35K
Mute Input
Ref Input
VCC1
100K
VCC1
1K
1K
1K
1K
1K
40K
23
22
40K
CH1/2/3 Drive Outputs
CH4/5 Drive Outputs
VCC1
VCC1 VCC2
13
25
30K
20K
14
30K
26
27
28
15
16
17
18
20K
6
FAN8025G3
Absolute Maximum Ratings (Ta = 25°C)
Parameter
Symbol
VCC1,2max
PD
Value
15
2.5note
Unit
Maximum supply voltage
Power dissipation
V
W
°C
°C
Operating temperature range
Storage temperature range
TOPR
-35 ~ +85
-55 ~ +150
TSTG
NOTE:
1. When mounted on a 50mm × 50mm × 1mm PCB (Phenolic resin material).
2. This is experimental data.
3. Power dissipation decrease rate : -20mW/°C(Ta≥25°C).
4. Should not exceed P and SOA (Safe Operating Area).
D
Power Dissipation Curve
Pd [mW]
3,000
2,000
SOA
1,000
0
0
25
50
75 85 100
125
150
175
Ambient Temperature, Ta [°C]
Recommended Operating Conditions (Ta = 25°C)
Parameter
Supply Voltage
Symbol
Min.
Typ.
Max.
Unit
VCC1,2
4.5
-
13.2
V
7
FAN8025G3
Electrical Characteristics
(Unless otherwise specified, Ta = 25 °C, V
= 12V, V
= 5V & the other conditions & nomenclatures follow the
CC1
CC2
test circuit)
Parameter
Quiescent Current1
Symbol
Conditions
Min.
-
Typ. Max.
Unit
mA
mA
V
I
I
Stand-by off
Stand-by on
18
9
-
27
-
CC1
CC2
Quiescent Current1
-
Mute On Voltage
V
-
-
-
-
0.5
-
MON
Mute Off Voltage
V
2.0
1.0
-10
-
V
MOFF
REFIN
REFIN
REF input voltage range
REF input current range*
ACTUATOR DRIVER(CH4,CH5)
Output Offset Current45
Maximum Output Voltage45
Transconductance
V
-
3.3
10
V
I
V
V
=1.65V
-
uA
REF
I
-
-
-6
3.6
1.2
0
0
4.0
1.4
-
+6
-
mA
V
OO45
V
OM45
G
= 100mVp-p, f=1kHz
-
1.6
5
A/V
V
M45
IN45
IN
IN
Control voltage input range45*
V
SLED/SPINDLE DRIVER(CH2,CH3)
Output Offset Voltage23
Maximum Output Voltage23
Closed loop Voltage Gain23
Control voltage input range23*
LOADING DRIVER(CH1)
Input high level Voltage
Input low level Voltage
Output Offset Voltage1
Transfer Gain
V
-
-100
9.5
16
0
10.0
18.0
-
+100
mV
V
OF23
OM23
VLO23
V
-
-
20
5
G
V
= 100mVp-p, f=1kHz
-
dB
V
V
IN23
0
V
-
-
-
-
2
-
-
-
-
V
V
IH
V
0.5
50
1.4
IL
V
OF1
-50
1.0
0
mV
V/V
G
1.2
V
* : Guaranteed design values
8
FAN8025G3
Application Information
1. Reference Input
• Reference input (PIN 22)
The applied voltage at the reference input pin must be ranged between 1.0V and 3.3V, when V
When the reference input voltage goes below 0.7V, all channels are disabled.
=12V.
CC1
2. Stand-by Function
• MUTE input (PIN 23)
We recommend CH1 as the loading(or tray) motor driver. Detailed logic table is as below.
INPUT LOGIC
High
Low or open
CH1
O
CH2
O
CH3
O
CH4
CH5
O
O
X
Stand-by input
O
X
X
X
3. Protection Function
Thermal shutdown (TSD)
When the chip temperature rises above 175°C, the thermal shutdown (TSD) circuit is activated and the output circuit is in the
mute state, that is off state. The TSD circuit has a temperature hysteresis of 25°C
4. Separation Of Power Supply
• VCC2 (PIN 24)
VCC2 is the power supply for CH4 and CH5, which are current feedback drivers.
• VCC1 (PIN 19)
VCC1 is the power supply for CH1, CH2, CH3 and predriver.
VCC1 input voltage must be higher than or same to VCC2. (VCC1≥VCC2)
9
FAN8025G3
4. Current feedback channels(channel 4 & 5)
power amp
current amp
20k
actuator
10k
Command
7.5k
7.5k
Sensing resistor
ref
X2
Rext Cext
• The reference voltage(ref) is given externally through pin 22.
• The input OP-amp output signal is amplified by (20K/10K) times and then fed to the current feedback amplifier.
• The current feedback amplifier compares the output current sensed input and command input then makes the controlled
output to eliminate delay effect of the load. Please refer to the application note for more information about current feedback
theory(http://www.fairchildsemi.com/an/AN/AN-4109.pdf).
• The DC gain of current feedback amplifier and power amplifier is unity, that is 1 [A/V]. Users can change the gain by
adding external resistor at the command input.
5. Channel 2 & 3 schematic
power amp
20k
10k
Command
M
ref
• The reference voltage(ref) is given externally through pin 22.
• The input OP-amp output signal is amplified by (12K/10K) times and then fed to the power amplifier. The gain of power
amplifier is 4 so the total max gain of channel 2 and 3 is 8.
10
FAN8025G3
6. Channel 1 schematic
10
CTL
Vpref
Vpref
DO1+
DO1-
13
14
11
FWD
M
REV
12
• The inputs of channel 1 are FWD, REV which are logic inputs and CTL which is linear input. The CTL input is used to
control the output gain, meanwhile FWD and REV are logic inputs to select output driver’s direction.
• Below table is FWD and REV logic input table.
Input
Output
DO1-
Vpref
L
FWD
REV
H
DO1+
Vpref
H
condition
Brake
H
H
L
L
Forward
Reverse
Brake
H
L
H
L
L
Vpref
Vpref
11
FAN8025G3
Typical Application Circuits
DO5−
IN1
1
2
28
27
FOCUS
R
CS
SERVO
ACTUATOR
FOCUS
SPINDLE
SLED
IC
DO5+
CAP5.1
SPIN COMMAND
SLED COMMAND
3
4
5
6
7
DO4− 26
CAP5.2
FB5
TRACKING
ACTUATOR
R
CS
DO4+
25
FB4
VCC2
24
TRACKING
LOADING
5V
CAP4.1
CAP4.2
MUTE 23
MUTE
REF
22
REF
FAN8025G3
PGND
PGND
SPIN COMMAND
SGND
IN4
8
9
IN2 21
SLED COMMAND
IN3
20
19
18
17
16
15
CTL
10
11
12
13
14
VCC1
DO3+
DO3−
12V
FWD
SLED
MOTOR
REV
DO1+
DO1−
DO2+
LOADING
MOTOR
SPINDLE
MOTOR
DO2−
12
FAN8025G3
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY
LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER
DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, and (c) whose failure to
perform when properly used in accordance with
instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
www.fairchildsemi.com
10/1/03 0.0m 001
Stock#DSxxxxxxxx
2003 Fairchild Semiconductor Corporation
相关型号：
FAN8026G3X_NL
CD Motor Driver, 5 Channel, PDSO28, 0.375 INCH, LEAD FREE, HEAT SINK, SSOP-28
FAIRCHILD
FAN8026G3_NL
CD Motor Driver, 5 Channel, PDSO28, 0.375 INCH, LEAD FREE, HEAT SINK, SSOP-28
FAIRCHILD
©2020 ICPDF网 联系我们和版权申明