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Data Sheet 5-CHANNEL MOTOR DRIVER FOR DVD PLAYER General Description
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
Features
* * * * * * * 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 1
BCD Semiconductor Manufacturing Limited
Data Sheet 5-CHANNEL MOTOR DRIVER FOR DVD PLAYER Pin Configuration
M28 Package HSOP-28
AM5668
VINFC OP2INOP2IN+ VINSL OP2OUT FWD REV
1 2 3 4 5 6 7
28 27 26 25 24 23 22
MUTE BIAS VINTK OP1IN+ OP1INVINSP GND
(PGND)
(PGND)
VCC1 VOTRVOTR+ VOSL+ VOSLVOFCVOFC+
8 9 10 11 12 13 14
21 20 19 18 17 16 15
VCTL OP1OUT VCC2 VOSPVOSP+ VOTKVOTK+
Figure 2. Pin Configuration of AM5668 (Top View)
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BCD Semiconductor Manufacturing Limited
Data Sheet 5-CHANNEL MOTOR DRIVER FOR DVD PLAYER Pin Description (Note 1)
Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Pin Name VINFC OP2INOP2IN+ VINSL OP2OUT FWD REV VCC1 VOTRVOTR+ VOSL+ VOSLVOFCVOFC+ VOTK+ VOTKVOSP+ VOSPVCC2 OP1OUT VCTL GND VINSP OP1INOP1IN+ VINTK BIAS MUTE Input for focus driver Comparator 2 input (-) Comparator 2 input (+) Input for the sled driver Comparator 2 output Tray driver forward input Tray driver reverse input VCC for pre-driver block and power block of sled and tray Tray driver output (-) Tray driver output (+) Sled driver output (+) Sled driver output (-) Focus driver output (-) Focus driver output (+) Tracking driver output (+) Tracking driver output (-) Spindle driver output (+) Spindle driver output (-) VCC for power block of spindle, tracking and focus Comparator 1 output Speed control input of tray driver Ground Input for spindle driver Comparator 1 input (-) Comparator 1 input (+) Input for tracking driver Input for reference voltage Input for mute control Function
AM5668
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.)
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BCD Semiconductor Manufacturing Limited
Data Sheet 5-CHANNEL MOTOR DRIVER FOR DVD PLAYER Functional Block Diagram AM5668
1
VINFC
17K
THERMAL SHUT DOWN
MUTE
28
MUTE
2
OP2IN-
42.5K
27
BIAS
3
OP2IN+
42.5k 17k
26
VINTK
4
VINSL
25
OP1IN+
5
OP2OUT
17K
24
OP1IN-
6
FWD
23
VINSP
7
REV
42.5K
22
GND
PGND
17K
PGND
VCC1 VOTR-
8
VCC1
Pre-DRV
21
VCTL
9 10
TRAY DRIVER
25.5K
20
OP1OUT
19
VCC2
VOTR+
VCC2
11
VOSL+
18
SLED DRIVER (4X) SPINDLE DRIVER (4X)
VOSP-
12
VOSL-
17
VOSP+
13
VOFC-
16
ACTUATOR DRIVER (6X) ACTUATOR DRIVER (6X)
VOTK-
14
VOFC+
15
VOTK+
VCC1
VCC2
VCC2
Figure 3. Functional Block Diagram of AM5668
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BCD Semiconductor Manufacturing Limited
Data Sheet 5-CHANNEL MOTOR DRIVER FOR DVD PLAYER Ordering Information
AM5668 Circuit Type Package M28: HSOP-28
Temperature Range 0 to 70 Part Number Tin Lead AM5668M28 Lead Free AM5668M28-E1 Marking ID Tin Lead AM5668M28 Lead Free AM5668M28-E1 Packing Type Tube
AM5668
E1: Lead Free Blank: Tin Lead
Package 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 Supply Voltage Power Dissipation Operating Junction Temperature Storage Temperature ESD (Human Body Model) ESD (Machine Model) Symbol VCC1, 2 PD TJ TSTG ESD ESD Value 13.5 1.7 (Note 3, 4) 150 -55 to 150 2000 200 Unit V W
oC oC
V 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 Operating Temperature Symbol VCC1 VCC2 TA 0 Min 4.3 4.3 to VCC1 70 Max 13.2 Unit V V
oC
Mar. 2007 Rev. 1. 4 5
BCD Semiconductor Manufacturing Limited
Data Sheet 5-CHANNEL MOTOR DRIVER FOR DVD PLAYER Electrical Characteristics
(TA=25oC, VCC1=VCC2=5V, VBIAS=2.5V, CVCC1=CVCC2=0.1F, unless otherwise specified.)
Parameter Quiescent Current Mute ON Voltage Mute OFF Voltage Focus Driver Output Offset Voltage Maximum Output Voltage Closed-Loop Voltage Gain Tracking Driver Output Offset Voltage Maximum Output Voltage Closed-Loop Voltage Gain Spindle Motor Driver Output Offset Voltage Maximum Output Voltage Closed-Loop Voltage Gain Gain Error by Polarity Sled Motor Driver Output Offset Voltage Maximum Output Voltage Closed-Loop Voltage Gain Tray Motor Driver Output Saturation Voltage 1 VSAT1TR Upper + Lower saturation, IL=200mA 1.4 1.6 V VOOFSL VOMSL GVSL at 8 load VIN=VBIAS 0.2V -100 3.1 18.0 3.3 20.0 22.0 100 mV V dB VOOFSP VOMSP GVSP GVSP at 8 load VIN=VBIAS 0.2V VIN=VBIAS 0.2V -50 3.1 13.3 0 3.3 15.5 1 17.5 2 50 mV V dB dB VOOFTK VOMTK GVTK at 10 load VIN=VBIAS 0.2V -50 3.1 3.4 23.5 50 mV V dB VOOFFC VOMFC GVFC at 10 load VIN=VBIAS 0.2V -50 3.1 3.4 23.5 50 mV V dB Symbol IQC VSTON VSTOFF No load 0 2.0 Conditions Min Typ 20 0.5 VCC1 Max Unit mA V V
AM5668
Mar. 2007 Rev. 1. 4 6
BCD Semiconductor Manufacturing Limited
Data Sheet 5-CHANNEL MOTOR DRIVER FOR DVD PLAYER Electrical Characteristics (Continued)
Parameter Output Saturation Voltage between FWD and REV Output Saturation Voltage 2 Output Adjustable Gain on "H" Side Voltage Tray Motor Driver Input Logic High Level Input Voltage Low Level Input Voltage High Level Input Current Comparator Input Offset Voltage Input Common-Mode Voltage Range Voltage Gain Output Sink Current Saturation Voltage VIO VCM GV ISINK VSAT RL 15k VOUT < 1.5V ISINK 2mA 0 80 6.0 250 500 3 VCC1 -1.5 mV V dB mA mV VIH VIL IIH VFWD=VREV=5V 2.0 0 180 VCC1 0.8 270 V V A Symbol VSAT1TR VSAT2TR GVTRH Conditions Output Saturation Voltage 1 between FWD and REV Upper + Lower saturation, IL=500mA "H" side output for input (VCTL=1V) 7.4 2.3 Min Typ Max 0.1 Unit V
AM5668
2.5
V
9.2
11
dB
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BCD Semiconductor Manufacturing Limited
Data Sheet 5-CHANNEL MOTOR DRIVER FOR DVD PLAYER Test Circuit AM5668
V28 1 V1 V27 2 V2 V26 3 V3 V25 4 V4 V24 V V5 V23 6 V6 7 V7 22 23 5 24 25 26 27 28
AM5668
CVCC1
V21 8 V8 V20 9 45 RL5 10 19 20 V V19 21
CVCC2 11 8 RL1 12 17 18 RL2 8
13 10 RL3 14
16 RL4 15 10
Figure 4. Test Circuit of AM5668
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BCD Semiconductor Manufacturing Limited
Data Sheet 5-CHANNEL MOTOR DRIVER FOR DVD PLAYER Typical Performance Characteristics AM5668
4 3 2 1 0 -1 -2 -3 -4 -0.3
4
Output Voltage: VO (V)
Output Voltage: VO (V)
VCC1=VCC2=5V VBIAS=2.5V RL=10
3 2 1 0 -1 -2 -3 -4 -0.3
VCC1=VCC2=5V VBIAS=2.5V RL=10
-0.2
-0.1
0.0
0.1
0.2
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 3 2 1 0 -1 -2 -3 -4 -0.4
4
Output Voltage: VO (V)
Output Voltage: VO (V)
VCC1=VCC2=5V VBIAS=2.5V RL=8
3 2 1 0 -1 -2 -3 -4
VCC1=VCC2=5V VBIAS=2.5V RL=8
-0.2
0.0
0.2
0.4
-0.6
-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.
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BCD Semiconductor Manufacturing Limited
Data Sheet 5-CHANNEL MOTOR DRIVER FOR DVD PLAYER Typical Performance Characteristics (Continued) AM5668
2.0
1.6
Power Dissipation: PD (W)
1.2
0.8
0.4
0.0 0 50 100
O
150
Ambient Temperature: TA ( C)
Figure 9. Power Dissipation Curve (Note 3)
Mar. 2007 Rev. 1. 4 10
BCD Semiconductor Manufacturing Limited
Data Sheet 5-CHANNEL MOTOR DRIVER FOR DVD PLAYER Typical Application
-COM
SPINDLE MUTE
AM5668
SERVO TRACKING FOCUS Tray Voltage Control
SLED
FWD
VREF
REV
SERVO
SPIN+
SPIN-
5V
M
19 18 17
TRACKING COIL
28
27
26
25
24
23
22
21
20
16
15
AM5668
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Figure 10. Typical Application of AM5668 in DVD Player
Mar. 2007 Rev. 1. 4 11
SERVO
SPIN-
SPIN+
5V
M
M
FOCUS COIL
BCD Semiconductor Manufacturing Limited
Data Sheet 5-CHANNEL MOTOR DRIVER FOR DVD PLAYER Application Information
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). 6. Tray driver logic input:
FWD (pin6) L L H H REV (pin7) L H L H VOTR+ (pin10) OPEN L H L VOTR(pin9) OPEN H L L Function Open mode Reverse mode Forward mode Brake mode
AM5668
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.
4. Insert the bypass capacitor (about 0.1F) between VCC pin and GND pin as close as possible to this chip.
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. "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.
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BCD Semiconductor Manufacturing Limited
Data Sheet 5-CHANNEL MOTOR DRIVER FOR DVD PLAYER Mechanical Dimensions HSOP-28 Unit: mm(inch) AM5668
17.890(0.704) 18.190(0.716)
0.204(0.008) 0.360(0.014)
10.000(0.394) 10.650(0.419) 7.400(0.291) 7.600(0.300)
0.400(0.016) 1.270(0.050)
0o
8o
5.050(0.199) 5.250(0.207)
0.800(0.031) TYP
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 13
BCD Semiconductor Manufacturing Limited
http://www.bcdsemi.com
IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifications herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or other rights nor the rights of others.
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