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| YOUDA INTEGRATED CIRCUIT YD5954 ACTUATOR DRIVER WITH CURRENT FEEDBACK FOR CD - ROM/DVD DESCRIPTION The YD5954 is a four-channel BTL driver IC for driving the motors and actuators in products such as CD-ROM/DVD drivers. Two of the channels use current feedback to minimize the current phase shift caused by the influence of load inductance. YD5954 FEATURES *Wide dynamic range(4.0V(typ.) when Vcc=12V, PVCC=5V, and RL=8| *Level shift circuit on chip. *Thermal shutdown circuit on chip. ). BLOCK DIAGRAM 28 27 26 10k STAND -BY THERMAL SHUT DOWN +20k +7.5k X2 DET.AMP 25 7.5k 24 23 22 PreGND 10k 21 PVcc2 15K SLED DRIVER +ACTUATIO DRIVER PVcc1 PVcc2 7.5k DET.AMP X2 10k -+ 7.5k 10k 1 2 3 4 + 20 19 PGND 18 17 16 15 YD5954 25k LOADING DRIVER - Vcc ACTUATIO DRIVER 20k Add: No.5 Xijin Road, National Hi-Tech Industrial Development Zone, Wuxi Jiangsu China Tel: 86-510-5205117 86-510-5205108 Fax: 86-510-5205110 Website: www.e-youda.com SHENZHEN OFFICE Tel 86-755-83740369 13823533350 Fax 86-755-83741418 Ver 3.1 1 of 4 2004-9-20 +-+ Vcc 5 6 7 8 PVcc1 PGND 9 10 11 12 13 14 WuXi YouDa Electronics Co., Ltd YOUDA INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS PARAMETER Power Supply Voltage Power Dissipation Operating Temperature Storage Temperature (Tamb=25ae ) VALUE 13.5 1.7 -34 to +85 YD5954 SYMBOL VCC, PVCC1/2 PD Topr Tstg UNIT V W ae ae -55 to +150 ELECTRICAL CHARACTERISTICS (Unless other specified, Tamb=25ae PARAMETER Quiescent Current Actuator Driver Output Offset Current Maximum Output Amplitude Transmission Gain Loading Driver Input op-amp Same Phase Input Range Input Bias Current (outflow current) Output High Level Voltage Output Low Level Voltage Output Offset Voltage Maximum Output Amplitude Closed-circuit Voltage Gain Sled Driver Offset Voltage VOOFSL -50 0 50 mV VICM IBOP VOHOP VOLOP VOOFLD VOMLD GVLD VIN=BIAS A 0.2V No load No load -100 7.5 18.0 10.8 -0.3 30 11.1 0.8 0 9.0 20.0 22.0 1.1 100 11.0 300 V nA V V mV V dB IOOF VOM GM VIN=BIAS A 0.2V -6 3.6 1.3 4.0 1.5 1.7 6 mA V A/V , Vcc=12V, Pvcc1=Pvcc2=5V, BIAS=2.5V, RL=8., Rd=0.5, C= 100pF) TEST CONDITIONS MIN TYP 18 MAX 27 UNIT mA SYMBOL Icc WuXi YouDa Electronics Co., Ltd 2 of 4 Website: www.e-youda.com YOUDA INTEGRATED CIRCUIT Maximum Output Amplitude Voltage Gain F/R Gain Differential STBY Logic STBY On Voltage STBY Off Voltage VSTBY1 VSTBY2 All Channels Off All Channels On 0 2.0 VOMSL GVSL GVSL VIN=BIAS A 0.2V VIN=BIAS A 0.2V 3.6 13.5 0 YD5954 4.0 15.5 1 17.5 2 V dB dB 0.5 V V APPLICATION CIRCUIT TRACKING VCENTER DSP STAND-BY LOADING |I -COM FOCUS SLED TRACKING COIL 5V or 12V 28 27 26 25 24 23 22 21 20 SLED MOTOR 19 18 M 17 Rd 16 15 YD5954 1 2 3 4 5 6 7 8 9 10 LOADING MOTOR 11 M FOCUS COIL 12 13 Rd 14 12V 5V or 12V WuXi YouDa Electronics Co., Ltd 3 of 4 Website: www.e-youda.com YOUDA INTEGRATED CIRCUIT OUTLINE DRAWING YD5954 WuXi YouDa Electronics Co., Ltd 4 of 4 Website: www.e-youda.com |
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