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AT5668
Preliminary Product Information 5-Channel Motor Driver for DVD/VCD Features
4 channels of DC motor BTL driver 1 channels forward/reverse control DC motor driver Built-in suspension function. Built-in 1-channel OPA. Built-in 1-Channel Comparator. Built-in thermal shutdown circuit. Operating voltage: 4.5V~13.2V
Description
The AT5668 is a 5-channel BTL driver IC. Two of them can drive DC motors and two can drive coils, such as the focus and tracking actuators of a CD-ROM/DVD-ROM/DVD-Player system, with current feedback. It also built-in one channel bi-direction DC motor driver for Tray.
Applications
CD-ROM/DVD-ROM/CD-RW drives DVD player.
Block Diagram
Aimtron reserves the right without notice to change this circuitry and specifications.
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw 1
AT5668
Preliminary Product Information 5-Channel Motor Driver for DVD/VCD Pin Descriptions
Pin No. 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 IN1 CP1N CP1P IN2 CP1O FWD REV VCC1 OUT5OUT5+ OUT2+ OUT2OUT1OUT1+ OUT4+ OUT4OUT3+ OUT3VCC2 OP2O VCTL GND IN3 OP2N OP2P IN4VBIAS MUTE_1_2_3_4 Function CH1(Focus coil) input Comparator negative input Comparator positive input CH2(Sled driver) input Comparator Output CH5 forward input CH5 reverse input Power Supply 1 CH5(Tray driver) output(-) CH5(Tray driver) output(+) CH2(Sled driver) output (+) CH2(Sled driver) output (-) CH1(Focus coil) output (-) CH1(Focus coil) output (+) CH4(Tracking coil) output (+) CH4(Tracking coil) output (-) CH3(Loader) output (+) CH3(Loader) output (-) Power Supply 2 Error amplifier output CH5 Speed control input Ground CH3(Loader) input Error amplifier negative input Error amplifier positive input CH4 (Tracking driver) input VREF input pin Mute control for CH1,CH2,CH3,CH4
Pin Out
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw 2
AT5668
Preliminary Product Information 5-Channel Motor Driver for DVD/VCD
Ordering Information Part number
AT5668H
Package
28-pin HSOP
Marking
AT5668H
Power Dissipation (Ta = 25oC)
Condition: mount on 50x50 mm2
t=1.0mm paper phenol PCB
Absolute maximum ratings (Ta = 25oC)
Parameter Power supply voltage Power dissipation Operating temperature Storage temperature
NOTE:* 1. Power dissipation reduces 13.6mW / C for using above Ta=25C 2. Do not exceed Pd and SOA.
Symbol VCC1,2 Pd Topr Tstg
Limits 13.5 1.7 -30~+80 -55~+150
unit V W o C o C
Recommended operating conditions (Ta = 25oC)
Parameter Power supply voltage Symbol VCC1 VCC2 Limits 4.0~13.2 4.0~Vcc1 unit V V
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw 3
AT5668
Preliminary Product Information 5-Channel Motor Driver for DVD/VCD Electrical characteristics (unless otherwise noted, Ta = 25oC,VCC1 =12V, VCC2 =5V, VBIAS=2.5V, RL1= RL4=8, RL2= RL3=12)
Parameter Quiescent current Mute quiescent current Mute ON voltage Mute OFF voltage Output voltage offset Maximum output voltage Closed loop gain Output voltage offset Maximum output voltage Closed loop gain Output voltage offset Maximum output voltage Closed loop gain Output voltage offset Maximum output voltage Maximum output voltage Closed loop gain Gain error Maximum output voltage Output voltage offset Input high level voltage Input low level voltage Input Dynamic Range Output Dynamic Range Voltage Gain Saturation Voltage Input Offset Input Offset Input Dynamic Range Output Dynamic Range Saturation Voltage Symbol Min. IQC IQSB VSBON 0 VSBOFF 2.0 VOFFSL VO3MAX GVSL VOFFSL VO3MAX GVSL VOFFSL VO3MAX GVSL VOFFLD VO4max1 VO4max2 GVLD GVLD VO5max1 VOFFTR VIH VIL -100 3.6 18.0 -100 3.6 18.0 -100 7.5 18.0 -100 7.5 3.6 13.5 0 3.8 -100 2.0 0 VO GVC VS VOffset VOffset VO VS 1 70 0 0.25 Typ. 18 0 4.0 20.0 0 4.0 20.0 0 9.0 20.0 0 9.0 4.0 15.5 1 0 0.25 0.25 Max. 30 5 0.5 100 22.0 100 22.0 100 22.0 100 17.5 2 4.2 100 0.8 VCC11.5V VCC11.0V 90 0.4 10 10 VCC11.5V VCC11.0V 0.4 Unit Conditions mA No Load mA CH5 ,OPA,COMP. active V V mV V dB mV V dB mV V dB mV V V dB dB V mV V V V V dB V mV mV V V V IO =-0.25mA~3mA IO =4mA IO =-0.25mA~3mA IO =3mA VIN = VBIAS 1.5V VIN = VBIAS 0.2V VIN = VBIAS 1.5V VIN = VBIAS 0.2V
VIN = VBIAS 1.5V VIN = VBIAS 0.2V
VIN = VBIAS2.0V VIN = VBIAS 1.5V VCC1=5V VIN = VBIAS 0.2V VIN = VBIAS0.2V RL5=45, RVCTL=0, VCC1=VCC2=5V
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw 4
AT5668
Preliminary Product Information 5-Channel Motor Driver for DVD/VCD
Tray Motor Driver
Fig1.
Input FWD High High Low Low REV High Low High Low OUT5+ Low High Low Open
Ouput OUT5Low Low High Open Status Break Forward Reverse Standby
Tray Motor Speed Control
The amplitude of the output voltage is controlled by VCTL(pin21). If you want to control differential output voltage of the tray, insert external resistor RVCTL as shown in figure 1.
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw 5
AT5668
Preliminary Product Information 5-Channel Motor Driver for DVD/VCD
Test Circuit
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw 6
AT5668
Preliminary Product Information 5-Channel Motor Driver for DVD/VCD
Typical Curve
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw 7
AT5668
Preliminary Product Information 5-Channel Motor Driver for DVD/VCD
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw 8
AT5668
Preliminary Product Information 5-Channel Motor Driver for DVD/VCD
Tray Speed Control(RL=45 ohm ) 11
10
Maximum Output Voltage(V)
9
8
7
6
5
4
5
6
7
8 VCTL
9
10
11
12
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw 9
AT5668
Preliminary Product Information 5-Channel Motor Driver for DVD/VCD Application circuit
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw 10
AT5668
Preliminary Product Information 5-Channel Motor Driver for DVD/VCD
Package Outlines (units:mm): HSOP-28
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw 11

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