FAN8732G [FAIRCHILD]
Spindle motor and 5-CH actuator driver [Spindle(PWM), Sled 2-CH(PWM) 3-CH(Linear)]; 主轴电机和5 -CH致动器驱动器[主轴（PWM） ，雪橇2 -CH（ PWM） -3-CH （线性） ]
| 型号： | FAN8732G |
| 厂家： | 
FAIRCHILD SEMICONDUCTOR |
| 描述： | Spindle motor and 5-CH actuator driver [Spindle(PWM), Sled 2-CH(PWM) 3-CH(Linear)] |
| 文件： | 总20页 (文件大小：309K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
www.fairchildsemi.com
FAN8732G/FAN8732BG/FAN8732CG
Features
Description
The FAN8732G/BG/CG is a monolithic IC suitable for a
PWM 3-phase BLDC spindle motor driver, 2-CH PWM
motor drivers for sled motor and 3-CH linear drivers which
drive the focus actuator, tracking actuator and loading motor
of the optical media applications.
Common
• Built-in thermal shutdown circuit (TSD)
• Built-in power save circuit
• 4 Independent voltage sources
• Corresponds to 3.3V or 5V DSP
42-SSOP-EP
Spindle
• Output PWM mode control
BTL(Sled 2-channels)
• Output PWM mode control
BTL(Other 3-channels)
• Output LINEAR mode control
Typical Applications
Ordering Information
• 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
Device
Package
Operating Temp.
−20°C ~ +75°C
−20°C ~ +75°C
−20°C ~ +75°C
−20°C ~ +75°C
−20°C ~ +75°C
−20°C ~ +75°C
FAN8732G
42-SSOP-EP
42-SSOP-EP
42-SSOP-EP
42-SSOP-EP
42-SSOP-EP
42-SSOP-EP
FAN8732GX
FAN8732BG
FAN8732BGX
FAN8732CG
FAN8732CGX
X:Tape & Reel type
FAN8732G:FG1X
FAN8732BG:FG3X
FAN8732CG:FG3X,Pull down resistor at SB pin
Rev. 1.0.1
©2003 Fairchild Semiconductor Corporation
FAN8732G/FAN8732BG/FAN8732CG
Pin Assignments
42
41
40
39
38
37
OSC
IN4
1
2
3
4
5
6
MUTE
IN3
IN5
PVCC3
CS2
PVCC1
SB
DO5+
DO5-
DO3-
36
35
34
33
32
PGND3
CS1
DO3+
DO1-
7
8
DO4+
DO1+
PGND1
SVCC
9
DO4-
10
11
12
PGND2
W
FAN8732G/
FAN8732BG/
FAN8732CG
31
30
DO2+
DO2-
13
14
V
U
29
28
27
26
SGND
IN2
CS3
HW-
HW+
HV-
15
16
17
18
19
20
21
IN1
SPIN
25
24
23
22
VREF
FG
HV+
HU-
VH
HU+
PVCC2
2
FAN8732G/FAN8732BG/FAN8732CG
Pin Definitions
Pin Number
Pin Name
IN4
I/O
I
Pin Function Description
CH4 input (typically sled1 input)
1
2
IN5
I
CH5 input (typically sled2 input)
Power supply for CH4 and CH5
Current sense for CH5
3
PVCC3
CS2
-
4
-
5
DO5 +
DO5 -
PGND3
CS1
O
O
-
CH5 + drive output (typically sled2 output +)
CH5 - drive output (typically sled2 output -)
Power ground 3
6
7
8
-
Current sense for CH4
9
DO4 +
DO4 -
PGND2
W
O
O
-
CH4 + drive output (typically sled1 output +)
CH4 - drive output (typically sled1 output -)
Power ground 2
10
11
12
13
14
15
16
17
18
19
20
21
22
23
O
O
O
-
3-phase output W for spindle
3-phase output V for spindle
3-phase output U for spindle
Current sense for spindle driver
Hall W(-) input
V
U
CS3
HW -
HW +
HV -
I
I
Hall W(+) input
I
Hall V(-) input
HV +
HU -
I
Hall V(+) input
I
Hall U(-) input
HU +
PVCC2
VH
I
Hall U(+) input
-
Power supply for spindle driver
Hall bias
I
Frequency generator
(FAN8732G:FG1X, FAN8732BG:FG3X)
24
FG
O
25
26
27
28
29
30
31
32
33
VREF
SPIN
IN1
I
I
Reference voltage input
Spindle torque control
I
Channel 1 input (typically focus input)
Channel 2 input (typically tracking input)
Signal ground
IN2
I
SGND
DO2 -
DO2 +
SVCC
PGND1
-
O
O
-
CH2 - drive output (typically tracking output +)
CH2 + drive output (typically tracking output -)
Power supply for signal block and CH1, CH2
Power ground 1
-
3
FAN8732G/FAN8732BG/FAN8732CG
Pin Definitions (Continued)
Pin Number
Pin Name
DO1 +
DO1 -
DO3 +
DO3 -
SB
I/O
O
O
O
O
I
Pin Function Description
CH1 + drive output ((typically focus output +)
CH1 - drive output (typically focus output -)
CH3 + drive output (typically loading output +)
CH3 - drive output (typically loading output -)
Short Brake mode selection
34
35
36
37
38
39
40
41
42
PVCC1
IN3
-
Power supply for CH3
I
Channel 3 input (typically loading input)
All channel mute
MUTE
OSC
I
I
PWM carrier frequency set
4
FAN8732G/FAN8732BG/FAN8732CG
Internal Block Diagram
1
IN4
Oscillator
All mute
42
OSC
OSC
2
IN5
MUTE
IN3
41
40
3
PVCC3
Short Brake Mode
4
LPF
CS2
39
38
PVCC1
SB
IN3
+
-
4
4
Drive
Logic
37
DO3-
DO3+
DO1-
5
6
DO5+
DO5-
Q
R
S
Gm
36
35
34
33
32
IOMAX
OSC
+
-
6
6
7
8
PGND3
CS1
PWM Control
LPF
H bridge
PVCC3
DO1+
PGND1
9
SVCC
DO2+
DO4+
DO4-
H
bridge
PWM Control
10
6
6
31
+
-
OSC
Spindle
power
30
29
DO2-
11
PGND2
TSD
SGND
OSC
28
27
IN2
IN1
12
W
V
PWM Control
13
14
U
CS3
15
LPF
SPIN
26
25
Reverse
detector
VREF
Frequency
generator
16
17
18
19
20
21
HW-
HW+
24
FG
HV-
HV+
HU-
HU+
Hall
bias
Focus, Tracking,
Loading block
Bootstrap
Regulator
23
22
VH
PVCC2
Spindle
power
5
FAN8732G/FAN8732BG/FAN8732CG
Equivalent Circuits
Sled & Spindle Input
Actuator & Loading Input
SVCC
SVCC
2KΩ
2KΩ
27 28 40
1
2
26
Hall Input
Current Sense Input
SVCC
4
8
15
2KΩ
16 17 18
19 20 21
Hall Bias Input
FG Output
SVCC
SVCC
24
23
Vref Input
Drive Output
SVCC
2KΩ
5
6
12
14
2KΩ
2KΩ
34 35
30 31
36
25
37
6
FAN8732G/FAN8732BG/FAN8732CG
Equivalent Circuits (Continued)
Mute/SB Input(FAN8732G/BG)
Oscillation Input
SVCC
2KΩ
8KΩ
12KΩ
30KΩ
2KΩ
2KΩ
41
38
42
SB Input(FAN8732CG)
8KΩ
12KΩ
30KΩ
38
10KΩ
7
FAN8732G/FAN8732BG/FAN8732CG
Absolute Maximum Ratings (Ta = 25°C)
Parameter
Symbol
Value
7
Unit
V
Supply Voltage (Signal block & CH1,2)
Supply Voltage (Power for CH3)
Supply Voltage (Spindle driver)
Supply Voltage (Power for CH4 & 5)
Power dissipation
SV
CCmax
CC1max
CC2max
CC3max
PV
PV
PV
15
V
15
V
15
V
NOTE
P
1.9 / 3.3
-20 ~ +75
-40 ~ +150
1.5
W
°C
°C
A
D
Operating Temperature Range
Storage temperature Range
Maximum Output Current (Spindle)
T
OPR
T
STG
I
I
I
Omax1
Omax2
Omax3
Maximum Output Current
(Focus, Tracking, Loading)
1.0
0.5
A
A
Maximum Output Current (Sled)
Note:
Case 1
Case 2
Remark
Pd is measured
base on the JE-
DEC/STD(JESD
51-2)
Power
plane(Cu)
PCB(glass-epoxy)
GND plane(Cu)
Pd=1.9W
Pd=3.3W
1. Case 1: Single layer PCB with 1 signal plane only. PCB size is 76mm × 114mm × 1.6mm.
2. Case 2: Multi layer PCB with 1 signal, 1 power and 1 ground planes. PCB size is 76mm × 114mm × 1.6mm. Cu planes size for
power and ground is 74mm × 62mm × 0.035mm.
3. These are experimental datum.
4. Power dissipation reduce rate of the case 1: -15.2mW/°C(Ta≥25°C)
5. Power dissipation reduce rate of the case 2: -26.4mW/°C(Ta≥25°C)
6. Should not exceed P and SOA (Safe Operating Area)
D
Power Dissipation Curve
Pd [mW]
3,000
case2
2,000
case1
1,000
SOA
0
0
25
50
75
100
125
150
175
Ambient Temperature, Ta [°C]
8
FAN8732G/FAN8732BG/FAN8732CG
Recommended Operating Conditions (Ta = 25°C)
Parameter
Symbol
SVCC
Min.
4.5
4.5
6
Typ.
5
Max.
7
Unit
V
Operating Supply Voltage (Signal block & CH1,2)
Operating Supply Voltage (Power for CH3)
Operating Supply Voltage (Spindle driver)
Operating Supply Voltage (Power for CH4,5)
Output current(Spindle)
PVCC1
PVCC2
PVCC3
12
12
12
0.5
0.5
0.25
-
13.2
13.2
13.2
1.0
V
V
4.5
-
V
I
I
I
A
O1
O2
O3
Output current(Focus, Tracking, Loading)
Output current(Sled)
-
0.8
A
-
0.4
A
PWM carrier frequency
F
30
120
KHz
osc
9
FAN8732G/FAN8732BG/FAN8732CG
Electrical Characteristics (Ta = 25°C)
(Ta=25°C, SVCC=PVCC1=5V, PVCC2=PVCC3=12V unless otherwise noted)
Parameter
Symbol
Condition
Min.
Typ.
Max.
Unit
COMMON PART
Quiescent Circuit Current
Mute On Current
ICC
−
−
−
50
0
70
30
0.8
−
mA
µA
V
IMUTE
VMON
VMOFF
IMUTEIN
MUTE=0V
Mute On Voltage
MUTE=variation
MUTE=variation
MUTE=5V
−
−
Mute Off Voltage
2.5
−
−
V
Mute Input Current
−
500
−
µA
KHz
V
PWM Carrier Frequency
REF input voltage range
REF input current range
SB Low Voltage
FOSC
VREFIN
IREFIN
VSBL
VSBH
ISB1
COSC=330pF
−
−
65
−
1.0
-10
−
3.3
+10
0.8
−
VREF=1.65V
−
µV
V
SB=variation
SB=variation
SB=5V(FAN8732G/BG)
SB=5V(FAN8732CG)
−
SB High Voltage
2.5
−
−
V
SB Input Current1
−
500
1.2
µA
mA
SB Input Current2
ISB2
−
−
SPINDLE DRIVE PART
Maximum Output Voltage1
Control Voltage Deadzone11
Control Voltage Deadzone12
Control Voltage Input Range1
Voltage Gain1
VOM1
VDEAD11
VDEAD12
VIN1
IO=0.5A
10.6
-80
0
11.1
-40
40
−
0
V
mA
mA
V
SPIN<VREF
SPIN>VREF
80
−
0
−
5
GVO1
GIO1=GVO1/Rcs[A/V]
ILIMIT1F=VLIMIT1F/Rcs[A]
ILIMIT1R=VLIMIT1R/Rcs[A]
0.85
0.4
0.22
1.0
0.5
0.28
1.15
0.6
0.34
V/V
V
Control Voltage Limit 1F
Control Voltage Limit 1R
VLIMIT1F
VLIMIT1R
V
Hall Amp Common Mode
Input Range
VHCOM
−
1.3
−
3.7
V
Hall Bias Output Voltage
VH pin Sink Current
VVH
IVH
IVH=10mA
MUTE-5V
0.6
0.85
1.2
30
V
−
−
mA
CH4/CH5 DRIVE PART (TYPICALLY SLED DRIVER)
Maximum Output Voltage21
Maximum Output Voltage22
Control Voltage Deadzone21
Control Voltage Deadzone22
Control Voltage Input Range2
Voltage Gain2
VOM21
VOM22
VDEAD21
VDEAD22
VIN2
IO=0.5A, PVCC3=5V
IO=0.5A, PVCC3=12V
IN4,5<VREF
3.4
10.3
-80
0
3.8
10.8
-40
40
−
−
V
V
0
mV
mV
V
IN4,5>VREF
80
5
−
0
−
GVO2
GIO2=GVO2/Rcs[A/V]
ILIMIT2=VLIMIT2/Rcs[A]
MUTE=5V
0.85
0.43
-100
1.0
0.5
−
1.15
0.58
100
V/V
V
Control Voltage Limit 2
VLIMIT2
ILEAK
Output Leak Current
µA
10
FAN8732G/FAN8732BG/FAN8732CG
Electrical Characteristics (Ta = 25°C) (Continued)
(Ta=25°C, SVCC=PVCC1=5V, PVCC2=PVCC3=12V unless otherwise noted)
Parameter
Symbol
Condition
Min.
Typ.
Max.
Unit
CH1,CH2 DRIVE PART (TYPICALLY ACTUATOR DRIVER)
Maximum Output Voltage 31
Control Voltage Input Range3
Closed Loop Voltage Gain
Output Offset Voltage
VOM31
VIN3
IO=0.5A, PVCC2=12V
3.8
0
4.2
−
−
5
V
V
−
GVO3
VOO1
−
20.2
-45
21.6
−
22.8
45
dB
mV
VREF=IN1=IN2=1.65V
CH3 DRIVE PART (TYPICALLY LOADING DRIVER)
IO=0.5A, PVCC1=5V,
PVCC2=12V
Maximum Output Voltage 41
VOM41
3.95
4.2
−
V
Maximum Output Voltage 42
Control Voltage Input Range4
Closed Loop Voltage Gain
Output Offset Voltage
VOM42
VIN4
IO=0.5A, PVCC1=PVCC2=12V
6.2
0
6.7
−
−
5
V
V
−
−
GVO4
VOO2
16.7
-50
18.1
−
19.3
50
dB
mV
VREF=IN3=1.65V
11
FAN8732G/FAN8732BG/FAN8732CG
Application Information
1. Torque Control & Output Current Control Of 3-phase Bldc Motor
PVCC2
+
Inside IC
Vcs
Rcs
-
LPF
+
Io
VAMP
Torque AMP
-
REXT1
R
S
Q
Commutator
SPIN
Driver
+
M
6
-
REXT2
IOMAX
Clock
Generator
Hall sensor
V
REF
1) By amplifying the voltage difference between V
and SPIN from Servo IC(or DSP), the Torque AMP produces the
REF
) which is input current command.
input voltage(V
AMP
2) The output current (I ) is converted into the voltage (V ) through the sense resistor (R ) and compared with the V
.
O
CS CS AMP
3) The clock generator has the RS latch set periodically, this makes output driver on state and when the V and the V
is
CS AMP
equal the state becomes off.
4) By the negative feedback loop, the sensed output voltage V equals to the V
.
CS AMP
5) Commutating sequence is selected by hall sensor inputs, and the minimum hall input voltage is 60mV.
6) The gain and limit current are calculated as below table.(Gvo=1[V/V])
Forward limit current
Reverse limit current
Input/Output gain[A/V]
Remark
R
G
R
EXT2
VO
EXT2
0.5
Rcs
0.28
Rcs
----------------------------------------------- -------------
•
-----------------------------------------------
is gain scaler
----------
-----------
R
+ R
R
R
+ R
EXT1
EXT2
CS
EXT1
EXT2
7) The range of the input voltage is as shown below when Rcs=0.5Ω, R
=0 and R
EXT1
=inf.
EXT2
Current
[A]
Rotation
Forward
Reverse
SPIN > V
SPIN < V
Forward rotation
Reverse brake
REF
REF
SB=H
1
Dead
zone-
Dead
zone+
0.56
SB=L,
open
G
=G
IO VO
/ R
CS
−
Short brake
0
40mV
-40mV
SPIN-V
REF
The input range of SPIN is 0 V ~ 5 V
12
FAN8732G/FAN8732BG/FAN8732CG
2. Torque Control & Output Current Control Of Sled Motor(2-phase Step Motor)
PVCC3
+
Inside IC
Vcs
Rcs
-
LPF
+
-
Io
VAMP
Torque AMP
REXT1
REXT2
R
S
Q
Drive Logic
IN4(or IN5)
Driver
+
-
M
4
IOMAX
Clock
Generator
V
REF
1) By amplifying the voltage difference between V
and IN4(or IN5) from Servo IC(or DSP), the Torque AMP produces
REF
) which is input current command.
the input voltage(V
AMP
2) The output current (I ) is converted into the voltage (V ) through the sense resistor (R ) and compared with the V
.
O
CS CS AMP
3) The clock generator has the RS latch set periodically, this makes output driver on state and when the V and the V
is
CS AMP
equal the state becomes off.
4) By the negative feedback loop, the sensed output voltage V equals to the V
.
CS AMP
5) To avoid output upper and lower transistor’s short through, switch trick is needed. Turn on delay time is 1usec, turn off
delay time is 2usec and the phase delay time, when the current direction is changed, is 3usec.
6) The gain and limit current are calculated as below table.(Gvo=1[V/V])
Torque limit current
Input/Output gain[A/V]
Remark
R
R
G
EXT2
EXT2
VO
0.5
Rcs
-----------------------------------------------
is gain scaler
----------------------------------------------- -------------
•
----------
R
+ R
R
+ R
R
EXT1
EXT2
EXT1
EXT2
CS
8) The range of the torque voltage is as shown below when Rcs=0.5Ω, R
=0 and R =inf.
EXT1 EXT2
Current
[A]
Forward
Reverse
I
limit
Dead
zone-
Dead
zone+
G
IO
=G
/ R
VO CS
IN4/IN5-V
REF
0
40mV
-40mV
13
FAN8732G/FAN8732BG/FAN8732CG
3. CH1/CH2/CH3 Drive Part
+
M
36 34 31
DO
37 35 30
DO−
Power amp
Inside IC
6R
(4R)
R
−
−
R
6R
(4R)
R
R
−
Power reference
R
30
+
SVCC
R
27 28 40
25
Vref
IN1
IN2 IN3
R
EXT2
R
EXT1
1) The reference voltage, V
is given externally through pin 25.
REF,
2) The power amp circuit produces the differential output voltages and drives the two output power amplifier circuits.
3) The CH1/CH2 gain of DO- drive part of the power amp block is 6R/R=6 times(and the gain of CH3 is 4R/R=4times). The
DO+ drive part of the power amp block is just inverting circuit of DO- drive part so the total gain of power amp block is 12
times that is 21.58dB(in case of CH3, gain is 8 times that is 18.06dB).
4) Power reference voltage, which is the mid-point of the drive output, is set to the half of the supply voltage.
5) When the total gain is too high, the external resistors(R
& R
)can be used to make the gain proper.
EXT2
EXT1
Power amp gain
Input/Output gain[V/V]
Remark
R
R
EXT2
EXT2
-----------------------------------------------
-----------------------------------------------
• 12
is gain scaler
12(21.58dB)
R
+ R
R
+ R
EXT1
EXT2
EXT1
EXT2
14
FAN8732G/FAN8732BG/FAN8732CG
4. Power Save & Channel Selection
MUTE/SB logic tables are as below.
Logic Input
Drive Change
Mute(pin41) SB(pin38)
CH1
off
CH2
off
CH3
off
CH4
off
CH5 spindle
L
L
L
H
L
off
off
off
off
off
off
on
off
H
H
on
on
off
on
on
on
H
5. SB(Short Brake Mode Selection)
When SB pin enabled(low), the brake mechanism of 3-phase spindle driver is changed to short brake.
SHORT BRAKE OPERATING SCHEME
MOTOR
OFF
Vcc
12
38
13
1KΩ
OFF
ON
14
ON
20KΩ
When short brake is enabled all lower output transistors are turned on and all upper output transistors are turned off, so the cur-
rent due to the motor back EMF(electro motive force) is freewheeled through lower transistors and lower freewheeling diodes.
It is general that the short brake is safer than the reverse brake in high speed applications. But it is not true in all cases because
the current in the short brake is depend on the amount of the motor back EMF. So in high speed applications we suggest an
optimal brake which is our patent. Please contact sales persons or offices if you need more information about the optimal
brake.
6. TSD(Thermal Shut Down)
o
When the chip temperature rises up to about 160 C(degree), all output drivers are shut down. When the chip temperature falls
o
o
off to about 130 C, then the drivers recover normal operation. TSD has the temperature hysteresis of about 30 C.
15
FAN8732G/FAN8732BG/FAN8732CG
7. FG OUTPUT
FAN8732G generates FG1X, meanwhile FAN8732BG/CG generates FG3X
8. PWM Carrier Frequency
PWM carrier frequency is made from charging and discharging a capacitor which should be connected to osc(#42) pin. You
can get typical pwm carrier frequency from below table.
capacitor[pF]
820
28
680
32
330
65
220
90
180
110
150
143
120
179
Carrier frequency[KHz]
9. Hall Sensor Connection
Vcc
Vcc
HALL 1
HALL 2
HALL 3
HALL 1
HALL 2
HALL 3
23
VH
23
VH
16
FAN8732G/FAN8732BG/FAN8732CG
10. Spindle Part Input-output Timing Chart
H1 +
H2 +
H3 +
A1 output current
(H1 -)+(H2 +)
A1 output voltage
A2 output current
(H2 -)+(H3 +)
A2 output voltage
A3 output current
(H3 -)+(H1 +)
A3 output voltage
The waveforms are different in accordance with motor types.
17
FAN8732G/FAN8732BG/FAN8732CG
Typical Application Circuits
OSC
42
41
Sled1
Sled2
1
IN4
Vref
Vref
Mute
Selection
2
3
4
5
6
IN5
MUTE
Loading
IN3 40
PVCC3
Vref
PVCC3
PVCC1
39
38
CS2
PVCC1
Short Brkae
Selection
SB
DO5+
DO3-
DO3+
37
DO5-
LOADING
MOTOR
M
36
35
PGND3
7
8
SLED
(stepping)
MOTOR
M
DO1-
CS1
FOCUS
ACTUATOR
DO1+
34
33
32
31
DO4+
9
PGND1
10
11
12
DO4-
PGND2
SVCC
DO2+
DO2-
SVCC
W
V
TRACKING
ACTUATOR
30
13
14
SGND
29
28
U
IN2
IN1
15
16
17
CS3
HW-
Tracking
27
26
Focus
HALL-W
SPIN
HW+
Spindle
Vref
18 HV-
VREF
25
(typically 1.65V)
HALL-V
HALL-U
19
20
HV+
HU-
24
23
FG
VH
22
21
PVCC2
HU+
PVCC2
18
FAN8732G/FAN8732BG/FAN8732CG
19
FAN8732G/FAN8732BG/FAN8732CG
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
8/18/03 0.0m 001
Stock#DSxxxxxxxx
2003 Fairchild Semiconductor Corporation
相关型号：
FAN8732GX
Spindle motor and 5-CH actuator driver [Spindle(PWM), Sled 2-CH(PWM) 3-CH(Linear)]
FAIRCHILD
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