BCD AM5668M28-E1 5-channel motor driver for dvd player Datasheet

Data Sheet
5-CHANNEL MOTOR DRIVER FOR DVD PLAYER
General Description
Features
The AM5668 is a five-channel BTL driver IC, in
which four channels are voltage-type BTL drivers for
tracking and focus actuators, sled and spindle motors,
the other one channel is DC motor driver for tray
which supports forward/reverse control. This IC also
contains two general-purpose independent precise
voltage comparators.
·
·
·
·
·
·
·
The AM5668 is available in standard HSOP-28 package.
AM5668
4-Channel DC Motor BTL Driver
1-Channel Forward/Reverse Control DC Motor
BTL Driver
Two Built-in Comparators
Built-in Level Shift Circuit
Built-in Mute Mode
Built-in Thermal Shutdown Circuit
Operating Voltage: 4.3V to 13.2V
Application
·
DVD Player
HSOP-28
Figure 1. Package Type of AM5668
Mar. 2007 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
1
Data Sheet
5-CHANNEL MOTOR DRIVER FOR DVD PLAYER
AM5668
Pin Configuration
M28 Package
(HSOP-28)
VINFC
1
28
MUTE
OP2IN-
2
27
BIAS
OP2IN+
3
26
VINTK
VINSL
4
25
OP1IN+
5
24
OP1IN-
FWD
6
23
VINSP
REV
7
22
GND
OP2OUT
(PGND)
(PGND)
VCC1
8
21
VCTL
VOTR-
9
20
OP1OUT
VOTR+
10
19
VCC2
VOSL+
11
18
VOSP-
VOSL-
12
17
VOSP+
VOFC-
13
16
VOTK-
VOFC+
14
15
VOTK+
Figure 2. Pin Configuration of AM5668 (Top View)
Mar. 2007 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
2
Data Sheet
5-CHANNEL MOTOR DRIVER FOR DVD PLAYER
AM5668
Pin Description (Note 1)
Pin Number
Pin Name
Function
1
VINFC
Input for focus driver
2
OP2IN-
Comparator 2 input (-)
3
OP2IN+
Comparator 2 input (+)
4
VINSL
Input for the sled driver
5
OP2OUT
6
FWD
Tray driver forward input
7
REV
Tray driver reverse input
8
VCC1
VCC for pre-driver block and power block of sled and tray
9
VOTR-
Tray driver output (-)
10
VOTR+
Tray driver output (+)
11
VOSL+
Sled driver output (+)
12
VOSL-
Sled driver output (-)
13
VOFC-
Focus driver output (-)
14
VOFC+
Focus driver output (+)
15
VOTK+
Tracking driver output (+)
16
VOTK-
Tracking driver output (-)
17
VOSP+
Spindle driver output (+)
18
VOSP-
Spindle driver output (-)
19
VCC2
20
OP1OUT
21
VCTL
Speed control input of tray driver
22
GND
Ground
23
VINSP
Input for spindle driver
24
OP1IN-
Comparator 1 input (-)
25
OP1IN+
Comparator 1 input (+)
26
VINTK
Input for tracking driver
27
BIAS
Input for reference voltage
28
MUTE
Input for mute control
Comparator 2 output
VCC for power block of spindle, tracking and focus
Comparator 1 output
Note 1: Symbols of + and - (output of drivers) mean polarity with respect to input pin.
(For example, if voltage of pin 1 is high, pin 14 is high and pin 13 is low.)
Mar. 2007 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
3
Data Sheet
5-CHANNEL MOTOR DRIVER FOR DVD PLAYER
AM5668
Functional Block Diagram
MUTE
THERMAL
SHUT DOWN
1
28
MUTE
VINFC
17K
2
27
42.5K
BIAS
OP2IN-
26
3
VINTK
OP2IN+
42.5k
17k
25
4
OP1IN+
VINSL
24
5
OP1IN-
OP2OUT
17K
23
6
FWD
VINSP
22
7
REV
GND
42.5K
PGND
VCC1
VOTR-
PGND
17K
Pre-DRV
8
21
VCTL
VCC1
20
9
OP1OUT
10
TRAY
DRIVER
25.5K
19
VOTR+
VCC2
VCC2
18
11
VOSL+
12
VOSL-
SLED
DRIVER
(4X)
SPINDLE
DRIVER
(4X)
14
VOFC+
17
VOSP+
16
13
VOFC-
VOSP-
ACTUATOR
DRIVER
(6X)
ACTUATOR
DRIVER
(6X)
VCC1
VCC2
VOTK-
15
VOTK+
VCC2
Figure 3. Functional Block Diagram of AM5668
Mar. 2007 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
4
Data Sheet
5-CHANNEL MOTOR DRIVER FOR DVD PLAYER
AM5668
Ordering Information
AM5668
E1: Lead Free
Blank: Tin Lead
Circuit Type
Package
M28: HSOP-28
Package
Part Number
Marking ID
Temperature
Range
Tin Lead
Lead Free
Tin Lead
Lead Free
Packing
Type
0 to 70 ℃
AM5668M28
AM5668M28-E1
AM5668M28
AM5668M28-E1
Tube
HSOP-28
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
Absolute Maximum Ratings (TA=25oC) (Note 2)
Parameter
Symbol
Value
Unit
Supply Voltage
VCC1, 2
13.5
V
Power Dissipation
PD
1.7 (Note 3, 4)
W
Operating Junction Temperature
TJ
150
oC
Storage Temperature
TSTG
-55 to 150
oC
ESD (Human Body Model)
ESD
2000
V
ESD (Machine Model)
ESD
200
V
Note 2: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to
the device. These are stress ratings only, and functional operation of the device at these or any other conditions
beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability.
Note 3:
a. When mounted on a 70mmx70mmx1.6mm glass epoxy board.
b. Reduced by 13.6mW for each increase in TA of 1oC over 25oC.
Note 4: Do not exceed PD and SOA and TJ=150oC values.
Recommended Operating Conditions (TA=25oC)
Parameter
Supply Voltage
Symbol
Min
Max
Unit
VCC1
4.3
13.2
V
70
oC
4.3 to VCC1
VCC2
Operating Temperature
0
TA
Mar. 2007 Rev. 1. 4
V
BCD Semiconductor Manufacturing Limited
5
Data Sheet
5-CHANNEL MOTOR DRIVER FOR DVD PLAYER
AM5668
Electrical Characteristics
(TA=25oC, VCC1=VCC2=5V, VBIAS=2.5V, CVCC1=CVCC2=0.1µF, unless otherwise specified.)
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Quiescent Current
IQC
Mute ON Voltage
VSTON
0
0.5
V
Mute OFF Voltage
VSTOFF
2.0
VCC1
V
Output Offset Voltage
VOOFFC
-50
50
mV
Maximum Output Voltage
VOMFC
Closed-Loop Voltage Gain
GVFC
No load
20
mA
Focus Driver
at 10Ω load
3.1
VIN=VBIAS ± 0.2V
3.4
V
23.5
dB
Tracking Driver
Output Offset Voltage
VOOFTK
Maximum Output Voltage
VOMTK
Closed-Loop Voltage Gain
GVTK
-50
at 10Ω load
3.1
VIN=VBIAS ± 0.2V
50
mV
3.4
V
23.5
dB
Spindle Motor Driver
Output Offset Voltage
VOOFSP
Maximum Output Voltage
VOMSP
Closed-Loop Voltage Gain
Gain Error by Polarity
-50
50
mV
at 8Ω load
3.1
3.3
V
GVSP
VIN=VBIAS ± 0.2V
13.3
15.5
17.5
dB
∆GVSP
VIN=VBIAS ± 0.2V
0
1
2
dB
100
mV
Sled Motor Driver
Output Offset Voltage
VOOFSL
Maximum Output Voltage
VOMSL
Closed-Loop Voltage Gain
GVSL
-100
at 8Ω load
3.1
3.3
V
VIN=VBIAS ± 0.2V
18.0
20.0
22.0
dB
1.4
1.6
V
Tray Motor Driver
Output Saturation Voltage 1
VSAT1TR
Upper + Lower saturation,
IL=200mA
Mar. 2007 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
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Data Sheet
5-CHANNEL MOTOR DRIVER FOR DVD PLAYER
AM5668
Electrical Characteristics (Continued)
Parameter
Symbol
Conditions
Output Saturation Voltage
between FWD and REV
∆VSAT1TR
Output Saturation Voltage 1
between FWD and REV
Output Saturation Voltage 2
VSAT2TR
Upper + Lower saturation,
IL=500mA
Output Adjustable Gain on
"H" Side Voltage
GVTRH
"H" side output for input
(VCTL=1V)
Min
7.4
Typ
Max
Unit
0.1
V
2.3
2.5
V
9.2
11
dB
Tray Motor Driver Input Logic
High Level Input Voltage
VIH
2.0
VCC1
V
Low Level Input Voltage
VIL
0
0.8
V
High Level Input Current
IIH
270
µA
VFWD=VREV=5V
180
Comparator
Input Offset Voltage
VIO
Input Common-Mode Voltage Range
VCM
Voltage Gain
GV
3
VCC1
−1.5
0
RL ≥ 15kΩ
80
V
dB
Output Sink Current
ISINK
VOUT < 1.5V
6.0
Saturation Voltage
VSAT
ISINK ≤ 2mA
250
Mar. 2007 Rev. 1. 4
mV
mA
500
mV
BCD Semiconductor Manufacturing Limited
7
Data Sheet
5-CHANNEL MOTOR DRIVER FOR DVD PLAYER
AM5668
Test Circuit
V28
1
28
2
27
3
26
4
25
5
24
6
23
7
22
V1
V27
V2
V26
V3
V25
V4
V24
V
V5
V23
V6
AM5668
V7
CVCC1
V21
8
21
9
20
10
19
11
18
12
17
13
16
14
15
V8
V20
45
V
RL5
V19
CVCC2
8
10
RL1
RL3
RL2
8
RL4
10
Figure 4. Test Circuit of AM5668
Mar. 2007 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
8
Data Sheet
5-CHANNEL MOTOR DRIVER FOR DVD PLAYER
AM5668
Typical Performance Characteristics
4
4
Output Voltage: VO (V)
Output Voltage: VO (V)
2
1
0
-1
-2
2
1
0
-1
-2
-3
-3
-4
-0.3
-0.2
-0.1
0.0
0.1
0.2
-4
-0.3
0.3
-0.2
-0.1
0.0
0.1
0.2
0.3
Input Voltage: VIN (V)
Input Voltage: VIN (V)
Figure 5. Focus Driver Characteristics (Note 5)
Figure 6. Tracking Driver Characteristics (Note 5)
4
4
3
3
VCC1=VCC2=5V
VBIAS=2.5V
RL=8Ω
2
Output Voltage: VO (V)
Output Voltage: VO (V)
VCC1=VCC2=5V
VBIAS=2.5V
RL=10Ω
3
VCC1=VCC2=5V
VBIAS=2.5V
RL=10Ω
3
1
0
-1
-2
VCC1=VCC2=5V
VBIAS=2.5V
RL=8Ω
2
1
0
-1
-2
-3
-3
-4
-0.4
-4
-0.2
0.0
0.2
-0.6
0.4
-0.4
-0.2
0.0
0.2
0.4
0.6
Input Voltage: VIN (V)
Input Voltage: VIN (V)
Figure 7. Sled Driver Characteristics (Note 5)
Figure 8. Spindle Driver Characteristics (Note 5)
Note 5: Input voltage herein is referenced to Bias pin voltage.
Mar. 2007 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
9
Data Sheet
5-CHANNEL MOTOR DRIVER FOR DVD PLAYER
AM5668
Typical Performance Characteristics (Continued)
2.0
Power Dissipation: PD (W)
1.6
1.2
0.8
0.4
0.0
0
50
100
150
O
Ambient Temperature: TA ( C)
Figure 9. Power Dissipation Curve (Note 3)
Mar. 2007 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
10
Data Sheet
5-CHANNEL MOTOR DRIVER FOR DVD PLAYER
AM5668
Typical Application
µ-COM
SERVO
SPINDLE
MUTE
Tray
Voltage
Control
FWD
REV
SPIN-
VREF
SPIN+
TRACKING
FOCUS
SLED
SERVO
M
5V
28
27
26
25
24
23
22
TRACKING COIL
21
20
19
18
17
16
15
8
9
10
11
12
13
14
AM5668
4
5
6
7
5V
SERVO
3
SPIN+
2
SPIN-
1
M
M
FOCUS COIL
Figure 10. Typical Application of AM5668 in DVD Player
Mar. 2007 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
11
Data Sheet
5-CHANNEL MOTOR DRIVER FOR DVD PLAYER
AM5668
Application Information
6. Tray driver logic input:
1. The built-in thermal shutdown circuit mutes the
output current when the chip temperature reaches
175oC (Typ). The hysteresis is set to 25oC (Typ), so the
circuit will start up again when the chip temperature
falls to 150oC (Typ).
2. In case mute pin voltage is under 0.5V or this pin is
not connected, output current is muted (except for tray
motor driver). Mute pin voltage should be more than
2.0V for normal application.
3. Bias pin (pin 27) should be pulled up to more than
1.2V. In case the bias pin voltage is pulled down below
0.9V (Typ), the output current is muted.
FWD
(pin6)
REV
(pin7)
VOTR+
(pin10)
VOTR(pin9)
Function
L
L
OPEN
OPEN
Open
mode
L
H
L
H
Reverse
mode
H
L
H
L
Forward
mode
H
H
L
L
Brake
mode
Input circuit of pins 6 and 7 is designed to avoid
simultaneous activation of upper and lower output
tray; however, in order to improve reliability, apply
motor forward/reverse input once through open mode.
We recommend time period for open longer than
10msec.
4. Insert the bypass capacitor (about 0.1µF) between
VCC pin and GND pin as close as possible to this chip.
"H" side output voltage on output pins (VOTR+ or
VOTR-) varies depending on output control terminal
for tray (pin 21). "H" side output voltage is set to three
times (9.2dB Typ) the voltage of VCTL (pin 21). And,
"L" side output voltage is equal to output saturation
voltage.
5. Heat dissipation fins are attached to the GND on
the inside of the package. Make sure to connect them
to the external GND.
Mar. 2007 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
12
Data Sheet
5-CHANNEL MOTOR DRIVER FOR DVD PLAYER
AM5668
Mechanical Dimensions
HSOP-28
Unit: mm(inch)
17.890(0.704)
18.190(0.716)
0.204(0.008)
0.360(0.014)
0.400(0.016)
1.270(0.050)
10.000(0.394)
10.650(0.419)
7.400(0.291)
7.600(0.300)
0o ~ 8 o
0.800(0.031) TYP
5.050(0.199)
5.250(0.207)
0.230(0.009)
0.470(0.019)
0.100(0.004)
0.300(0.012)
2.180(0.086)
2.330(0.092)
2.280(0.090)
2.630(0.104)
Mar. 2007 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
13
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