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PDF BD7776ARFS Data sheet ( Hoja de datos )

Número de pieza BD7776ARFS
Descripción 7-Channel Power Driver
Fabricantes ROHM Semiconductor 
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No Preview Available ! BD7776ARFS Hoja de datos, Descripción, Manual

Structure
Silicon Monolithic Integrated Circuit
Product series
Type
7ch Power Driver for CD,DVD±RW,DVD-RAM
BD7776ARFS
Characteristic
特長
3-phase-sensor-less system, therefore don’t need three hall sensors.
Output current detection resister is not necessary with internally
equipped detection circuit.
Absolute maximum ratings
Parameter
Symbol
Limits
Unit
POWER MOS Power supply voltage
SPVM,SLVM
15 #1
V
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Preblock/BTL powerblock Power supply voltage
PWM control block Power supply voltage
Vcc, AVM,LDVM
DVcc
15
7
V
V
Power dissipation
Pd
1.5 2
W
Operating temperature range
Topr
-2070
Storage temperature
Tstg
-55150
Junction temperature
Tjmax
150
#1 POWER MOS output terminals (2932, 3537pin) is contained.
#2 PCB (70mm×70mm×1.6mm,occupied copper foil is less than 3%,glass epoxy standard board) mounting.
Reduce power by 12mW for each degree above 25.
Recommended operating conditions (Ta=-20+70)
(Set the power supply voltage taking allowable dissipation into considering)
Parameter
Spindle driver powerblock power supply voltage
Sled motor driver powerblock power supply voltage
Preblock power supply voltage
Loading driver power block power supply voltage
Actuator driver powerblock power supply voltage
PWM control block power supply voltage
Spindle driver output current
Symbol
SPVM
SLVM
Vcc
LDVM
AVM
DVcc
Iosp
MIN
10.8
4.3
4.3
4.3
TYP
Vcc#3
Vcc#3
12
5.0
5.0
5.0
1.0
MAX
13.2
Vcc#3
5.5
5.5
2.5#4
Unit
V
V
V
V
V
V
A
Actuator/sled motor/loading motor driver output current
Ioo
0.5 0.8
A
#3 Set the same supply voltage to SPVM,SLVM and Vcc
#4 The current is guaranteed 3.5A in case of the Short-circuit braking mode and the current which is turned on/off
in a duty-ratio of less than 1/10 with a maximum on-time of 5msec.
1/3
This product isn’t designed for protection against radioactive rays.
Status of this document
The Japanese version of this document is the formal specification.
A customer may use this translation version only for a reference to help reading the formal version.
If there are any differences in translation version of this document , formal version takes priority.
REV. A

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