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PDF BA6665FM Data sheet ( Hoja de datos )
| Número de pieza | BA6665FM | |
| Descripción | Motor driver for CD-ROMs | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Optical disc ICs
Motor driver for CD-ROMs
BA6665FM
BA6665FM
The BA6665FM is a CD-ROM spindle motor driver supporting reverse-rotation preventing circuit. It incorporates power
save circuit, thermal shut down circuit, FG output, hall bias, etc. The 3-phasefall-wave pseudo linear driving system
achieves high-performance and multi-function.
zApplications
CD-ROM / RW, DVD-ROM
zFeatures
1) 3-phase, full-wave pseudo linear driving system
2) Built in power save
3) Built in thermal shut down circuit
4) Built in current limit circuit
5) Built in Hall Bias circuit
6) Built in FG-output ( 3 phase parallel output )
7) With switching function of regular / reverse rotations
zAbsolute maximum ratings (Ta=25°C)
Parameter
Symbol
Limits
Supply voltage
Supply voltage
Power dissipation
Operate.temp.range
VCC
VM
Pd
Topr
7
15
2200∗1
−20~+75
Strage.temp.range
Juncition temp.
Maximum o.current
Tstg
Tjmax
IOUT
−55~+150
150
1300∗2
70mm×70mm×1.6mm glass epoxy board.
∗1 Derating in done at 17.6mW / ˚C for operating above Ta=25˚C.
∗2 Do not, however exceed Pd, ASO and Tj=150˚C.
Unit
V
V
mW
˚C
˚C
˚C
mA
zRecommended operating conditions (Ta=25°C)
Parameter
Symbol Min. Typ.
Operating supply voltage
VCC
4.5
−
range
VM 3.0 −
Max.
5.5
14.0
Unit
V
1 page  
Optical disc ICs
zMeasurement circuit
5V
5V
V2 IHB
12V A1
RNF A2
1.65V
RL
H1+ H2+ H3+
H1− H2− H3−
)Fig.1
Circuit current
Hall bias voltage
Test Circuit
BA6665FM
ICC1 : Value of 'A1'
VPS=0 [V]
H1+~H3+=(1/2)×VCC+0.1 [V]
H1−~H3−=(1/2)×VCC [V]
ICC2 : Value of 'A1'
VPS=5 [V]
H1+~H3+=(1/2)×VCC+0.1 [V]
H1−~H3−=(1/2)×VCC [V]
VHB : Value of 'V2'
VPS=5 [V]
IHB=10 [mA]
12V
V1
RNF
5V
VPS
VREV EC
1.65V
RL
H1+ H2+ H3+
H1− H2− H3−
)PS ON/OFF range
Fig.2 REV ON/OFF range Test Circuit
Torque limit current
VPSON : Range of 'VPS' that output pins
become input-output table.
(Input condition 1~6)
VPSOFF : Range of 'VPS' that output pins
become open.
(Input condition 1~6)
VRSON : Range of 'VREV' that output pins
become input-output table.
(Input condition 1~6)
VPS=5 [V] EC=0 [V]
VRSOFF : Range of 'VREV' that output pins
become open.
(Input condition 1~6)
VPS=5 [V] EC=0 [V]
ITL : (Value of 'V1') / 0.5
VPS=5 [V] EC=0 [V]
(Input condition 1~6)
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet BA6665FM.PDF ] | |
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