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Data Sheet 5-CHANNEL MOTOR DRIVER FOR DVD PLAYER General Description
The AM5680 is a five-channel BTL driver IC for driving motors and actuators used in DVD player. It contains two independent precise voltage regulators with adjustable range from 1.5V to 4V. Furthermore, an under voltage detector is provided for system reset. The AM5680 is available in standard HSOP-28 package.
AM5680
Features
* * * * * * * 4 channels DC Motor BTL Driver 1 channel Forward/Reverse Control DC Motor BTL Driver Built-in Voltage Detector for System Reset Built-in Level Shift Circuit Built-in Mute Mode Built-in Thermal Shutdown Circuit Two Built-in Regulator Controllers
Application
* DVD Player
HSOP-28
Figure 1. Package Type of AM5680
Mar. 2007 Rev. 1. 3 1
BCD Semiconductor Manufacturing Limited
Data Sheet 5-CHANNEL MOTOR DRIVER FOR DVD PLAYER Pin Configuration
M28 Package HSOP-28
AM5680
VINFC TRB_1 REGO2 VINSL REGO1 FWD REV
1 2 3 4 5 6 7
28 27 26 25 24 23 22
MUTE BIAS VINTK TRB_2 RESET VINSP GND
(PGND)
(PGND)
VCC1 VOTRVOTR+ VOSL+ VOSLVOFCVOFC+
8 9 10 11 12 13 14
21 20 19 18 17 16 15
VCTL VCCD VCC2 VOSPVOSP+ VOTKVOTK+
Figure 2. Pin Configuration of AM5680 (Top View)
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BCD Semiconductor Manufacturing Limited
Data Sheet 5-CHANNEL MOTOR DRIVER FOR DVD PLAYER Pin Description
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 TRB_1 REGO2 VINSL REGO1 FWD REV VCC1 VOTRVOTR+ VOSL+ VOSLVOFCVOFC+ VOTK+ VOTKVOSP+ VOSPVCC2 VCCD VCTL GND VINSP RESET TRB_2 VINTK BIAS MUTE Input for focus driver Regulator 1 driver output Regulator 2 feedback input Input for the sled driver Regulator 1 feedback input Tray driver forward input Tray driver reverse input VCC for pre-drive 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 Input for voltage detection Speed control input of tray driver Ground Input for spindle driver Output for system reset Regulator 2 driver output Input for tracking driver Input for reference voltage Input for mute control Function
AM5680
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. 3 3
BCD Semiconductor Manufacturing Limited
Data Sheet 5-CHANNEL MOTOR DRIVER FOR DVD PLAYER Functional Block Diagram AM5680
VINFC
1
17k
THERMAL SHUT DOWN
MUTE
28
MUTE
TRB_1
2 3
42.5k
27 26
42.5k 17k
BIAS
REGO2
VINTK
VINSL
4 5
17k
25 24 23
17k
TRB_2
REGO1
Voltage Detector
RESET
FWD
6 7
42.5k
VINSP
REV
22
GND
PGND
PGND
Pre-DRV
VCC1 VOTR-
8 9 10
21
VCTL
25.5k
VCC1
20
VCCD
TRAY DRIVER
VCC2
VOTR+
19
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 AM5680
Mar. 2007 Rev. 1. 3 4
BCD Semiconductor Manufacturing Limited
Data Sheet 5-CHANNEL MOTOR DRIVER FOR DVD PLAYER Ordering Information
AM5680 Circuit Type Package M28: HSOP-28
Package HSOP-28 Temperature Range 0 to 70oC Part Number AM5680M28-E1 Marking ID AM5680M28-E1 Packing Type Tube
AM5680
E1: Lead Free
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 Range ESD (Human Body Model) ESD (Machine Model) Symbol VCC1, 2 PD TJ TSTG ESD ESD Value 8.8 1.7 (Note 3) 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.
Recommended Operating Conditions (TA=25oC)
Parameter Power Supply Voltage Operating Temperature Symbol VCC1 VCC2 TA 0 Min 4.3 Max 8 Unit V V 70
oC
4.3 to VCC1
Mar. 2007 Rev. 1. 3 5
BCD Semiconductor Manufacturing Limited
Data Sheet 5-CHANNEL MOTOR DRIVER FOR DVD PLAYER Electrical Characteristics (Note 4)
(TA=25oC, VCC1=VCC2=5V, VBIAS=1.65V, RL=10/45, 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 Sled Driver Output Offset Voltage Maximum Output Voltage Closed-loop Voltage Gain Spindle Driver Output Offset Voltage Maximum Output Voltage Closed-loop Voltage Gain Gain Error by Polarity Voltage Detector Detecting Voltage Low Level Output Voltage Hysteresis Voltage Detecting Voltage Temperature Coefficient VCCD VOL 200 0.01 RL=200, VOL<0.4V 2.75 2.9 3.05 0.4 V V mV %/oC VOOFSP VOMSP GVSP GVSP at 10 load VIN=VBIAS0.2V VIN=VBIAS0.2V -50 3.0 13.5 0 3.5 15.5 1 17.5 2 50 mV V dB dB VOOFSL VOMSL GVSL at 10 load VIN=VBIAS0.2V -100 3.0 18.0 3.5 20.0 22.0 100 mV V dB VOOFTK VOMTK GVTK at 10 load VIN=VBIAS0.2V -50 3.0 21.5 3.5 23.5 25.5 50 mV V dB VOOFFC VOMFC GVFC at 10 load VIN=VBIAS0.2V -50 3.0 21.5 3.5 23.5 25.5 50 mV V dB Symbol IQC VSTON VSTOFF 0 2.0 Conditions Min Typ 16 0.5 VCC1 Max Unit mA V V
AM5680
Mar. 2007 Rev. 1. 3 6
BCD Semiconductor Manufacturing Limited
Data Sheet 5-CHANNEL MOTOR DRIVER FOR DVD PLAYER Electrical Characteristics (Continued, Note 4)
(TA=25oC, VCC1=VCC2=5V, VBIAS=1.65V, RL=10/45, unless otherwise specified.)
Parameter Tray Driver Output Saturation Voltage 1 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 Regulator (Note 5) Output Voltage Output Load Differential Power Supply Voltage Differential VREG VRL VVCC IL=500mA IL=0 to 500mA VCC=4.3 to 8V, IL=500mA 1.5 -50 -25 0 0 4.0 50 25 V mV mV VIH VIL IIH VFWD=VREV=5V 1.5 -0.3 110 VCC1 0.5 270 V V A VSAT1TR VSAT1TR VSAT2TR GVTRH Upper+Lower saturation, IL=200mA Output Saturation Voltage 1 between FWD and REV Upper+Lower saturation, IL=500mA at 45 load, VVCTL=1V 0.7 -0.1 1.3 1.6 0.1 V V Symbol Conditions Min Typ Max Unit
AM5680
1.0
2.1
2.5
V
7.4
9.2
11
dB
Note 4: This device is not designed for protection against radioactive rays. Note 5: It is based on 8550D PNP transistor.
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BCD Semiconductor Manufacturing Limited
Data Sheet 5-CHANNEL MOTOR DRIVER FOR DVD PLAYER Typical Performance Characteristics AM5680
4 3 2
4 3 2
Output Voltage (V)
Output Voltage (V)
1 0 -1 -2 -3 -4 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6
1 0 -1 -2 -3 -4 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6
VCC1=VCC2=5V VBIAS=1.65V RL=10
VCC1=VCC2=5V VBIAS=1.65V RL=10
Input Voltage (V)
Input Voltage (V)
Figure 4. Focus Driver Characteristics (Note 6)
Figure 5. Tracking Driver Characteristics (Note 6)
4
4
3
3
2
Output Voltage (V)
2 1 0 -1 -2 -3 -4 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6
Output Voltage (V)
1 0 -1 -2 -3 -4 -1.0 -0.5 0.0 0.5 1.0
VCC1=VCC2=5V VBIAS=1.65V RL=10
VCC1=VCC2=5V VBIAS=1.65V RL=10
Input Voltage (V)
Input Voltage (V)
Figure 6. Sled Driver Characteristics (Note 6)
Figure 7. Spindle Driver Characteristics (Note 6)
Note 6: Input voltage herein is referenced to Bias pin voltage.
Mar. 2007 Rev. 1. 3 8
BCD Semiconductor Manufacturing Limited
Data Sheet 5-CHANNEL MOTOR DRIVER FOR DVD PLAYER Typical Performance Characteristics (Continued) AM5680
2.0 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0.0 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 0 50 100
O
1.6
Power Dissipation (W)
Output Voltage (V)
1.2
0.8
VCC1=VCC2=5V VBIAS=1.65V RL=45
0.4
150
VCTL Input Voltage (V)
Ambient Temperature ( C)
Figure 8. Tray Channel Output Voltage vs. VCTL Input Voltage
Figure 9. Power Dissipation Curve (Note 3)
Mar. 2007 Rev. 1. 3 9
BCD Semiconductor Manufacturing Limited
Data Sheet 5-CHANNEL MOTOR DRIVER FOR DVD PLAYER Typical Application AM5680
SERVO TRACKING SPINDLE FOCUS Tray Voltage Control RESET
-COM
MUTE
SLED
FWD
VREF
REV
3.3V
VCC=5V
VCC=5V 4.7K 0.1F
3.3V
M
21 20 19 18 17
TRACKING COIL
28
27
26
25
24
23
22
16
15
AM5680
1 4.4K ADJ 1.8V REGOUT
2
3 10K 16.4K
4
5
6
7 0.1F
8
9
10
11
12
13
14
M
47F VCC=5V ADJ 3.3V REGOUT 10K VCC=5V
M
FOCUS COIL
47F
Figure 10. Typical Application of AM5680 in DVD Player
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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 30oC (Typ), so the circuit will start up again when the chip temperature falls to 145oC (Typ). 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. Time period for open is recommended to be 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. 7. For 3.3V I/O system, if voltage applied to VCCD (pin 20) is lower than detector threshold voltage (Typ 2.9V), RESET pin (pin 24) will generate a L level as reset signal. Once the VCCD comes over 3.1V, RESET pin will change to H level immediately.
AM5680
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 VCC1,2 pin and GND pin as close as possible to this chip.
5. Heat dissipation fins are attached to the GND on the inside of the package. Make sure to connect them to the external GND.
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
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BCD Semiconductor Manufacturing Limited
Data Sheet 5-CHANNEL MOTOR DRIVER FOR DVD PLAYER Mechanical Dimensions HSOP-28 Unit: mm(inch) AM5680
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. 3 12
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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