The FAN8006D3 is a monolithic integrated circuit, suitable
for 4-CH motor driver which drives focus actuator, tracking
actuator, sled motor and loading motor of a CD-media system.
Quiescent current1I
Quiescent current2I
Quiescent current3I
Quiescent current4I
Quiescent current5I
Mute on voltageV
Mute off voltageV
STBY1 on voltageV
STBY1 off voltageV
STBY2 on voltageV
STBY2 off voltageV
CC1
CC2
CC3
CC4
CC5
MON
MOFF
STON1
STOFF1
STON2
STOFF2
BTL DRIVE CIRCUIT
Channel 1,3,4(RL=8Ω)
Output offset voltage 1,3,4V
Maximum output voltage 1,3,4V
Closed loop voltage gain 1,3,4G
Ripple rejection ratio 1,3,4RR
Slew rate 1,3,4SR
OF1,3,4
OM1,3,4
VC1,3,4
1,3,4
1,3,4
Channel 2(RL=24Ω)
Output offset voltage 2V
Maximum output voltage 2V
Closed loop voltage gain 2G
OF2
OM2
VC2
Ripple rejection ratio 2RR
Slew rate 2SR
INPUT OP-AMP
Input offset voltageV
Input bias currentI
High level output voltageV
Low level output voltageV
Output sink currentI
Output source currentI
Open loop voltage gainG
OFOP
BOP
OHOP
OLOP
SINK
SOURCE
VO
Ripple rejection ratioRR
Slew rateSR
Common mode rejection ratioCMRRV
Common mode input rangeCMIRPreVcc=5V-0.3-4V
FAN8006D3 have 2 independent standby inputs that is , pin #7(STBY2) and pin #20(STBY1), and 1 independent mute
input(pin #7) . Th e digital logics of the se functions are as below.
STBY1=>LowSTBY1=>HighSTBY2
Mute=>LowMute=>HighMute=>LowMute=>HighHighLow
CH 1
CH3/4operate--
standbyoperate
CH2----operate standby
2. Mute Timing Chart
If the mute input( pin #6) voltage rises above 2.0V, the output(CH1) current can be muted under normal operating conditions,
make sure to open pin #7 or pull it down below 0.5V. Below figure is high impedanc e mu te timing chart.
high impedance--
Mute(pin #6)
Vout
(pin#13,14)
Voltage
2[V]
Voltage
V
om
0.5[mV]
PreVcc = 12V
PowVcc CH1= 5V
BIAS = 1.65 V
RL = 8Ω
≤ 125µsec
T
0
T
m
0
time
time
m
9
Page 10
FAN8006D3
3. CH2 Drive Output Schematic
PowVccCH2
−
11
DO
M
DO+
12
Inside IC
10K
10
R
−
+
R
PowVccCH2
1
Bias
+
−
10K
Power amp
Current Conveyor Type 2
−
+
10K
5
20K
+
10K
−
10K
• The reference voltage BIAS is given externally through pin 1.
• The input signal is ampl ified by (20K/10K) times and the n fed to the current conveyor type 2 ci rcuit and the power amp
circuit.
• The power amp circuit produces the diffe r ential output vol tages and drives two output power amplifier circu its.
• Since the differential gain of the power amplifier is equal to 2 × (1+10K / 10K) , the output signal of the input OP-amp is
amplified totally 8.
• If the total gain is insufficient or large, external resistor can be used to adjust the gain.
10
Page 11
4. CH1/3/4 Drive Output Schematic
FAN8006D3
19
9
PowVccCH1
(PowVccCH3/4)
Inside IC
R
13 16 18
−
+
R
PowVccCH1
(PowVccCH3/4)
10K
1
Bias
DO
−
+
−
10K
Current Conveyor Type 2
224
M
Power amp
+
+
27
−
10K
14 15 17
DO+
+
20K
−
23
3
26
10K
−
10K
4
25
22
• The reference voltage BIAS is given externally through pin 1.
• The input OP-amp output sign al is amplified by (20K/ 10K) ti mes and then fed to t he current conv eyor type 2 circu it and the
power amp circuit.
• The power amp circuit produces the diffe r ential output vol tages and drives two output power amplifier circu its.
• Since the differential gain of the power amplifier is equal to 2 × (1+10K / 10K) , the output signal of the input OP-amp is
amplified totally 8.
• If the total gain is insufficient or large, the input OP-amp and the external re sistors can be used to adjus t the gain.
11
Page 12
FAN8006D3
Application Circuits
(Voltage control mode)
VOLTAGE
BIAS
SERVO AMP
FOCUS
SLED
TRACKING
LOADING
MUTE
STBY2
LOADING
MOTOR
1
1
BIAS
2
OPIN1(+)
3
OPIN1(
4
OPOUT1
5
IN2
6
MUTE
7
STBY
8
GND
9
PowVcc CH1
10
PowVcc CH2
11
VO2(
12
VO2(+)
−)
FAN8006D3
PowVcc CH3/4
−)
PreVcc
OPIN4(+)
OPIN4(
OPOUT4
OPIN3(+)
OPIN3(−)
OPOUT3
GND
STBY1
VO3(
VO3(+)
28
12V
27
26
−)
25
24
23
22
21
20
19
18
−)
17
STBY1
SLED MOTOR
TRACKING
ACTUATOR
13
14
VO1(
VO1(+)
−)
VO4(
VO4(+)
16
−)
15
FOCUS
ACTUATOR
12
Page 13
FAN8006D3
13
Page 14
FAN8006D3
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:
user.
1. Life support devices or systems are devices or systems
which, (a) are inte nded for surgical implant into the body,
or (b) support or sustain life, and (c) whose fail ure to
perform when proper ly used in accordance with
2. A critical component in any component of a life support
device or system whose failure to perform can be
reasonably exp ected to c ause t he failure of the l ife suppo rt
device or system, or to aff ect its safety or effectiveness.
instruct ions for use provided in the labeling, can be
reasonably expected to result in a signi ficant injury of the
www.fairchildsemi.com
6/24/02 0.0m 001
2002 Fairchild Semiconductor Corporation
Stock#DSxxxxxxxx
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