W49 Datasheet, PDF (1/11 Pages) Ceramate Technical – 3-Phase Motor Driver for CD-ROMs

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 reverse-
rotation 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.
5) Built-in rotation direction detector.
6) Built-in reverse rotation prevention circuit.
7) Built-in short brake pin.
FAbsolute maximum ratings (Ta = 25_C)
Parameter
Applied Voltage
(with 5V power supply)
Applied Voltage
(motor power supply1)
Applied Voltage
(motor power supply2)
Power
dissipation
W49
Operating temperature
Symbol
Limits
Unit
Vcc
7
V
VM1
13.5
V
VM2
13.5
V
Pd
1700*2
mW
Topr
-20~+75
Storage temperature
Tstg
-55~+150*5
Output current
Iout
1100
mA
1 Reduced by 17.6mW for each increase in Ta of 1 over 25 .
2 When mounted on a 70mmX70mmX1.6mm glass epoxy board.
Reduced by 13.6mW for each increase in Ta of 1 over 25 .
3 Reduced by 11.6mW for each increase in Ta of 1 over 25 .
4 Reduced by 8.0mW for each increase in Ta of 1 over 25 .
5 Tj should not exceed 150 .
6 Should not exceed Pd or ASO values.
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Tel:[phone]
Fax:[phone]
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Http: www.ceramate.com.tw
Rev 1.1 May.9, 2002