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W49

器件名称: W49
功能描述: 3-Phase Motor Driver for CD-ROMs
文件大小: 174.13KB    共11页
生产厂商: CERAMATE
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简　　介:WAFER WIN W49 3-Phase Motor Driver for CD-ROMs The W49 series are ICs developed for CD-ROM spindle motor drives. These ICs possess a short brake and reverserotation brake for two types of brake functions, and also contain FG output and rotation direction detection (FR) circuits, making them high-functionality and high-performance ICs. FApplications CD-ROM, CD-R, CD-RW, DVD-ROM, and DVD-RAM FFeatures 1) Three-phase, full-wave, pseudo-linear drive system. 2) Built-in power save and thermal shutdown functions. 3) Built-in current limiter and Hall bias circuits. 4) Built-in FG output. FAbsolute maximum ratings (Ta = 25_C) 5) Built-in rotation direction detector. 6) Built-in reverse rotation prevention circuit. 7) Built-in short brake pin. Parameter Applied Voltage (with 5V power supply) Applied Voltage (motor power supply1) Applied Voltage (motor power supply2) Power W49 dissipation Operating temperature Storage temperature Output current Symbol Vcc VM1 VM2 Pd Topr Tstg Iout Limits 7 13.5 13.5 1700*2 -20~+75 -55~+150*5 1100 Unit V V V mW J J mA 1 Reduced by 17.6mW for each increase in Ta of 1J over 25J. 2 When mounted on a 70mmX70mmX1.6mm glass epoxy board. Reduced by 13.6mW for each increase in Ta of 1J over 25J. 3 Reduced by 11.6mW for each increase in Ta of 1J over 25J. 4 Reduced by 8.0mW for each increase in Ta of 1J over 25J. 5 Tj should not exceed 150J. 6 Should not exceed Pd or ASO values. * All specs and applications shown above subject to change without pr……
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