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BD6670FM Datasheet(PDF) 1 Page - Rohm

Part No. BD6670FM
Description  3Phase spindle motor driver for CD-RW
Download  17 Pages
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Manufacturer  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

BD6670FM Datasheet(HTML) 1 Page - Rohm

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BD6670FM
Motor driver ICs
1/17
3Phase spindle motor driver for CD-RW
BD6670FM
BD6670FM is a 3-phase spindle motor driver adopting 180
° PWM direct driving system. Noise occurred from the motor
driver when the disc is driver can be reduced. Low power consumption and low heat operation are achieved by using
DMOS FET in output and driving directly.
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!
!
!
Applications
CD-RW
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!
!
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Features
1) 180 degree Direct-PWM driving system.
2) Built in power save circuit.
3) Built in current limit circuit.
4) Built in FG-output.
5) Built in 3phase synthesized FG-output.
6) Built in hall bias circuit.
7) Built in reverse protection circuit.
8) Built in short brake circuit.
9) Low consumption by MOS-FET.
10) Built in capacitor for oscillator.
11) Built in gain switch and current limit switch.
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!
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Absolute maximum ratings (Ta=25
°C)
Power supply voltage
Supply voltage for motor
VG pin voltage
Operating temperature range
Junction temperature
Power dissipation
Output current
Storage temperature range
Debating in done at 17.6mW /
°C for operating above Ta=25°C.
The current is guaranteed 3.0A in case of the current is turn on / off
in a duty-ratio of less than 1/10 with a maximum on-time of 5msec.
∗2 70mm×70mm×1.6mm glass epoxy board.
∗1 However, do not exceed Pd, ASO and Tj=150°C.
Parameter
Symbol
Limits
Unit
VCC
TJMAX
7V
V
VM
15
20
V
VG
IOMAX
Topr
2500
mW
°C
°C
150
°C
Pd
Tstg
2200
−20~+75
−55~+150
mA
∗1
∗2
!
!
!
!
Recommended operating conditions
Supply voltage for motor
VG pin voltage
Power supply voltage
Parameter
VCC
4.5
5.5
VM
4.0
13.2
V
V
V
VG
8.5
19
Symbol
Min.
Typ.
Max.
Unit


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