Fairchild FAN8005D2 3-ch motor driver Datasheet

www.fairchildsemi.com
FAN8005D2
3-CH Motor Driver
Features
Description
•
•
•
•
•
•
•
The FAN8005D2 is a monolithic integrated circuit, suitable
for a 3-ch motor driver which drives focus actuator, tracking
actuator, and sled motor of a CD-media system.
3-Channel BTL (Balanced transformer-less) driver
Built-in variable regulator with reset (Series-REG)
Built-in thermal shutdown circuit
Built-in power save circuit
Built-in general OP-amp
Operating supply voltage: 4.5V ~ 5.5V
Corresponds to 3.3V or 5V DSP
Typical Applications
• Compact disk player
• Digital video disk player
• Compact disk ROM
28-SSOPH-300
Ordering Information
Device
Package
Operating Temp.
FAN8005D2
28-SSOPH-300
−35°C ~ +85°C
FAN8005D2TF 28-SSOPH-300
−35°C ~ +85°C
Rev. 1.0.2
©2001 Fairchild Semiconductor Corporation
2
3
4
IN.1
IN.2
OUT1
6
OUT2
5
IN2.2
2
IN2.1
1
REF
22
7
FIN(GND)
8
9
10
11
12
13
14
DO1−
OPIN−
23
DO1+
OPIN+
24
DO2−
OPOUT
25
DO2+
OUT3
26
PS
IN3.2
27
VM12
IN3.1
28
REGOX
VM3
VREGX
RESX
DO3+
DO3−
PGND
FIN(GND)
SGND
VCC
FAN8005D2
Pin Assignments
21
20
19
18
17
16
15
FAN8005D2
FAN8005D2
Pin Definitions
Pin Number
Pin Name
I/O
Pin Function Descrition
1
REF
I
Bias voltage input
2
IN1.1
I
Op-amp CH1 input (+)
3
IN1.2
I
Op-amp CH1 input (−)
4
OUT1
O
Op-amp CH1 output
5
IN2.1
I
Op-amp CH2 input (+)
6
IN2.2
I
Op-amp CH2 input (−)
7
OUT2
O
Op-amp CH2 output
8
SGND
-
Signal ground
9
VM12
-
BTL CH1, 2 supply voltage
10
PS
I
Power save
11
DO2+
O
Drive2 output (+)
12
DO2−
O
Drive2 output (−)
13
DO1+
O
Drive1 output (+)
14
DO1−
O
Drive1 output (−)
15
PGND
-
Power ground
16
DO3−
O
Drive3 output (−)
17
DO3+
O
Drive3 output (+)
18
RESX
I
Regulator reset
19
VREGX
O
Op-amp output
20
VM3
-
BTL CH3 supply voltage
21
REGOX
I
Op-amp input(+)
22
OPIN−
I
Op-amp input (−)
23
OPIN+
I
Op-amp input (+)
24
OPOUT
O
Op-amp output
25
OUT3
O
Op-amp CH3 output
26
IN3.2
I
Op-amp CH3 input (−)
27
IN3.1
I
Op-amp CH3 input (+)
28
VCC
-
Supply voltage
3
FAN8005D2
PGND
20
19
18
17
16
15
+ −−
+
REGULATOR
−
+
+
−-
10k
+
++ −−
−
+
VM3
TSD
20k
10k
10k
21
10k
22
DO3(−)
OPIN−
23
DO3(+)
OPIN+
24
10k
OPOUT
25
RESX
OUT3
26
VREGX
IN3.2
27
VM3
IN3.1
28
FIN
(GND)
REGOX
VCC
Internal Block Diagram
+
−- +
10k
VM12
+
IN1.2
OUT1
IN2.1
IN2.2
OUT2
10k
10k
10k
8
9
10
11
12
13
14
DO1(−)
IN1.1
(GND)
FIN
+
DO1(+)
7
−
DO2(−)
6
+
DO2(+)
5
10k
10k
4
−
+
PS
3
−
VM12
2
LEVEL
SHIFT
SGND
1
REF
50k
+
VM12
+
−
−
+
10k
−
50k
4
LEVEL
SHIFT
++ -−
++ -−
−-
10k
10k
+ −
10k
+
10k
−
10k
FAN8005D2
Equivalent Circuits
Error amp input
Power save input
2
3
5
6
27
50Ω
50Ω
50Ω
50kΩ
10
26
50kΩ
Error amp output
Signal reference input
4
6
50Ω
1
50Ω
0.2kΩ
25
Power output
Regulator reset
11
12
13
14
50Ω
50kΩ
18
16
17
30kΩ
5
FAN8005D2
Equivalent Circuits (Continued)
Regulator
Regulator output
50Ω
21
19
50Ω
General op amp input
General op amp output
24
22
23
50Ω
6
50Ω
FAN8005D2
Absolute Maximum Ratings ( Ta=25°°C)
Parameter
Maximum supply voltage
Symbol
Value
Unit
VCCmax
7
V
PD
@1.4
W
Operating temperature range
TOPR
−35 ~ +85
°C
Storage temperature range
TSTG
−55 ~ +150
°C
Power dissipation
Notes:
1. When mounted on a 76.2mm × 114mm × 1.57mm PCB (Phenolic resin material).
2. Power dissipation reduces 11.2mW / °C for using above Ta = 25°C
3. Do not exceed PD and SOA (Safe operating area).
PD (Temporary)
Pd (mW)
2,000
1,200
SOA
400
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
VCC
4.5
-
5.5
V
7
FAN8005D2
Electrical Characteristics
(Unless otherwise specified, Ta=25°C, VCC=VM12=VM3=5V)
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Quiescent current
ICC
VIN=0V
-
13
-
mA
Power save on current
IPS
PS pin=GND
-
-
1
mA
Power save on voltage
VPSon
-
-
-
0.5
V
Power save off voltage
VPSoff
-
2
-
-
V
BTL DRIVE CIRCUIT
Output offset voltage 1
VOO1
VIN=2.5V (CH1,2)
−50
-
+50
mV
Output offset voltage 2
VOO2
VIN=2.5V (CH3)
−60
-
+60
mV
Maximum output voltage 1
VOM1
VCC=5V, RL=8Ω (CH1, 2)
2.7
3.5
-
V
Maximum output voltage 2
VOM2
VCC=5V, RL=24Ω (CH3)
3
3.8
-
V
Closed loop voltage gain 1
GVC1
f=1kHz, VIN=0.1VRMS (CH1, 2)
10.5
12
13.5
dB
Closed loop voltage gain 2
GVC2
f=1kHz, VIN=0.1VRMS (CH3)
16
18
20
dB
Ripple rejection ratio
RR
VIN=0.1VRMS, f=120Hz
-
60
-
dB
Slew rate
SR
VO=2Vp-p, f=120kHz
-
1
-
V/µs
ERROR AMP CIRCUIT
Input offset voltage
VOFOP
-
−20
-
+20
mV
IBOP
-
-
-
300
nA
4.5
4.8
-
V
Input bias current
High level output voltage
VOHOP
VCC=5V, RL=10kΩ
Low level output voltage
VOLOP
VCC=5V, RL =10kΩ
-
0.2
0.5
V
ISINK
VCC=5V, RL= 1kΩ
1
3
-
mA
ISOURCE
VCC=5V, RL=1kΩ
1
3
-
mA
SROP
f=120kHz, 2Vp-p
-
1
-
V/µs
Output sink current
Output source current
Slew rate
GENERAL OP AMP CIRCUIT
Input offset voltage
VOFOP
-
−20
-
+20
mV
IBOP
-
-
-
300
nA
Input bias current
High level output voltage
VOHOP
VCC=5V, RL=1kΩ
3
4
-
V
Low level output voltage
VOLOP
VCC=5V, RL =1kΩ
-
1
1.3
V
ISINK
VCC=5V, RL= 50Ω
2
5
-
mA
ISOURCE
VCC=5V, RL=50Ω
2
5
-
mA
VIN=−75dB, f=1kHz
-
75
-
dB
Output sink current
Output source current
Open loop voltage gain
GVO
Ripple rejection ratio
RROP
VIN=−20dB, f =120Hz
-
65
-
dB
Slew rate
SROP
f=120kHz, 2Vp-p
-
1
-
V/µs
Common mode rejection ratio
CMRR
VIN=−20dB, f=1kHz
-
80
-
dB
VARIABLE REGULATOR CIRCUIT
8
Regulator output voltage
VREG
IL=100mA
3.0
-
4.5
V
Load regulation
∆VR1
IL=0→200mA
−40
-
10
mV
Line regulation
∆VCC
IL=200mA, VCC=5→8V
−20
-
30
mV
FAN8005D2
Application Information
1. Reference Input & Power Save Function
Pin 1 (REF) is a reference input pin.
• Reference input
The applied voltage at the reference input pin must be between 1.5V and 3.5V, when VCC=5V.
• Power save input
The following input conditions must be satisfied for the power save function.
Power save on voltage
Below 0.5V
Power save function operation
Power save off voltage
Above 2V
Normal operation
2. Protection Function
Thermal shutdown (TSD)
• If 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.
3. Regulator & Reset Function
The regulator configuration with the external components is illustrated in figure 1.
• The external circuit is composed of the KSB772 PNP transistor and a capacitor about 33µF, and two feedback resistors R1,
R2.
The capacitor operates both as a ripple eliminator and as a compensator of the feedback loop.
• The output voltage (REG OUT) is
R1
Vout =  1 + -------- × 2.5

R2
• When the voltage of pin18 (Vreset) is 0V, the regulator reset function is activated, and the output voltage (REG OUT)
becomes 0V. Otherwise, if the voltage of pin 18 is 5V, the regulator operates properly.
VCC
REG OUT
KSB772
+
Vreset
R1
R2
19
21
+
FAN8005D2
18
−
2.5V
Figure 1. Regulator circuit
9
FAN8005D2
4. Focus / Tracking Actuator Sled Motor Drive Part
R2
R1
OPin+
2
5
27
OPin-
3
6
26
OPout
4
7
25
Vref
Vin
+
−
R1
Vp
R2
1
R1
−
DOP
+
R2
11
13 17
12
14 16
M
R2
+
DON
−
R2
VM12
Dp
60k
+
−
62k
Vp
Qp
• The voltage, Vref is the reference voltage given by the external bias voltage of the pin 1.
• The input signal (Vin) through pins 3,6 and 26 are amplified one time and then fed to the output stage.
(assume that input opamp was used as a buffer)
• The total closed loop voltage gain is as follows (assume that R2=2R1)
Vin = Vref + ∆V
DOP = Vp + 2 ∆V
DON = Vp – 2 ∆V
Vout = DOP – DON = 4 ∆V
Vout
Gain = 20 log ------------- = 20 log 4 = 12dB
∆V
• To change the total closed loop voltage gain, Use the input opamp as an amplifier
• The output stage is the balanced transformerless (BTL) driver.
• The bias voltage Vp is expressed as ;
62k
Vp = ( PVCC1 – VDp – VcesatQp ) × -------------------------- + VcesatQp
60k + 62k
PVCC1 – VDp + VcesatQp
= --------------------------------------------------------------------------- + VcesatQp
1.97
10
----------
(1)
FAN8005D2
Typical Performance Characteristics
< VCC & ICC >
ICC (mA)
< VCC & VOM >
VOM (V)
14
10
9
CH1
CH2
CH3
12
8
10
7
6
8
5
6
4
3
4
Ta= 25 ℃
VCC= VM12= VM3
8Ω
Ω (CH1,2)
RL1= 8
24Ω
Ω (CH3)
RL2= 24
2
Ta=25℃
℃
VCC=VM12=VM3
1
2
0
0
3
6
9
12
15
2
5
8
11
14
VCC (V)
VCC (V)
< IOM & VOUT >
VOUT (V)
< VCC & GVC >
GVC (dB)
20
4.5
18
4
16
CH1 Upp.
CH1 Low
CH2 Upp.
CH2 Low
CH3 Upp.
CH3 Low
3.5
3
2.5
2
14
12
10
8
1.5
6
Ta= 25℃
25 ℃
VCC= VM12= VM3
1
0.5
2
0
Ta= 25℃
25℃
VCC= VM12= VM3
RL1= 8Ω (CH1,2)
RL2= 24 Ω (CH3)
CH1
CH2
CH3
4
0
0
100
200
300
400
500
600
700
3
5
7
9
11
13
15
17
VOUT (V)
19
21
VCC (V)
IOM (mA)
< VCC & VOUT (LINE REGULATION) >
VOUT (V)
4
< IO & VOUT (LOAD REGULATION) >
3.40
3.35
3.30
3
3.25
3.20
2
3.15
3.10
1
Ta= 25℃
25℃
VCC= 5V
3.05
Ta= 25℃
25℃
3.00
0
4
6
8
10
12
14
16
VCC (V)
18
0
200
400
600
800
1000
IO (mA)
11
FAN8005D2
Typical Performance Characteristics (Continued)
Isource (mA)
< VCC & Isource (ERROR OP-AMP) >
< VCC & Isink (ERROR OP-AMP) >
Isink (mA)
16
5
CH1
CH2
CH3
14
12
4
10
3
8
6
2
CH1
CH2
CH3
1
4
Ta= 25℃
25℃
RL= 1KΩ
1KΩ
Ta= 25℃
25℃
RL= 1KΩ
1KΩ
2
0
0
3
6
9
12
3
15
6
9
12
15
VCC (V)
VCC (V)
< VCC & Isource (GENERAL OP-AMP) >
Isource (mA)
120
25
100
20
80
15
60
10
40
Ta= 25℃
25℃
RL= 50Ω
50Ω
5
< VCC & Isink (GENERAL OP-AMP) >
Isink (mA)
30
20
Ta= 25℃
25℃
RL= 50Ω
50Ω
0
0
3
6
9
12
3
15
6
9
12
< TEMP & GVC >
GVC (dB)
15
VCC (V)
VCC (V)
TEMP & LINE REGULATION
Δ VCC (mV)
20
20
18
16
16
14
12
12
10
8
8
6
CH1
CH2
CH3
4
2
VCC= VM12= VM3= 4.5V
RL1= 8Ω
8Ω (CH1,2)
RL2= 24Ω
24 Ω (CH3)
4
0
0
- 40
- 20
0
20
40
60
80
TEMP (℃
℃)
12
VCC= 6V→
6V →9V
IL= 200mA
100
- 40
- 20
0
20
40
60
80
100
TEMP (℃
℃)
FAN8005D2
Application Circuits 1
(Differential PWM control mode)
BIAS
VOLTAGE
SERVO AMP
SLED
PWM2
FOCUS
REF
VCC 28
2
IN1.1
IN3.1 27
3
IN1.2
IN3.2 26
4
OUT1
OUT3 25
5
IN2.1
OPOUT 24
6
IN2.2
OPIN+ 23
7
OUT2
OPIN− 22
VCC
BIAS
BIAS
PWM1
PWM2
TRACKING
1
PWM1
PWM1
PWM2
BIAS
FAN8005D2
VARIABLE
REGULATOR
8
SGND
REGOX 21
9
VM12
VM3 20
5V
5V
PS
10 PS
VREGX 19
11 DO2+
RESX 18
12 DO2−
DO3+ 17
13 DO1+
DO3- 16
14 DO1−
PGND 15
TRACKING
ACTUATOR
VCC
REGULATOR RESET
SLED MOTOR
FOCUS
ACTUATOR
13
FAN8005D2
Application Circuits 2
(Voltage control mode)
BIAS
VOLTAGE
1 REF
VCC 28
SERVO AMP
SLED
2 IN1.1
IN3.1 27
FOCUS
3 IN1.2
IN3.2 26
TRACKING
4 OUT1
OUT3 25
5 IN2.1
OPOUT 24
6 IN2.2
OPIN+ 23
7 OUT2
OPIN- 22
VCC
FAN8005D2
33uF
8 SGND
REGOX 21
9 VM12
VM3 20
VARIABLE
REGULATOR
+
5V
5V
PS
TRACKING
ACTUATOR
10 PS
VREGX 19
11 DO2+
RESX 18
12 DO2-
DO3+ 17
VCC
REGULATOR RESET
SLED MOTOR
13 DO1+
DO3- 16
14 DO1-
PGND 15
FOCUS
ACTUATOR
14
FAN8005D2
15
FAN8005D2
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
3/17/01 0.0m 001
Stock#DSxxxxxxxx
 2001 Fairchild Semiconductor Corporation
Similar pages