BD7998EFS_1 Datasheet, PDF (1/4 Pages) Rohm – Silicon Monolithic Integrated Circuit

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Structure
Silicon Monolithic Integrated Circuit
Product series
Type
6ch Power Driver for CD-ROM,DVD-ROM
BD7998EFS
Function
特長
・The spindle driver and the SLED driver can highly effective drive with PWM
drive system.
・The actuator driver and the loading driver are liner BTL drive system and are
achieving a low noise power.
○Absolute maximum ratings
Parameter
Symbol
Limits
Unit
POWER MOS power supply voltage
SPVM1,2
SLRNF1,2
15 ^#1
V
Preblock/BTL powerblock power supply voltage
PWM control block power supply voltage
Power dissipation
Vcc=SLV_DD,AVM
15
V
DVcc
7
V
Pd
2.0 ^＃2
W
Operating temperature range
Topr
-40～85
℃
Storage temperature
Tstg
-55～150
℃
Joint part temperature
Tjmax
150
℃
#1 POWER MOS output terminals (17～20, 30, 33, 35pin) is contained.
#2 PCB (70mm×70mm×1.6mm,occupied copper foil is less than 3%,glass epoxy standard board) mounting.
Reduce power by 16mW for each degree above 25℃.
○Recommended operating conditions (Ta=-40～+85℃)
〔Set the power supply voltage taking allowable dissipation into considering〕
Parameter
Spindle driver powerblock Power supply voltage
Sled motor driver powerblock Power supply voltage
Symbol
SPVM
SLVM
MIN
－
－
TYP
Vcc ^#3
Vcc ^#3
MAX
－
－
Unit
V
V
Preblock / Loading driver powerblock Power supply voltage
Actuator driver powerblock Power supply voltage
SLV_DD=Vcc
AVM
AVM
12
14
V
4.3
5.0
Vcc
V
PWM control block power supply voltage
Spindle driver output current
DVcc
Iosp
4.3
5.0
6.0
V
－
1.2
2.5 ^#4
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 3.0A in case of the current is turned on/off in a duty-ratio of less than 1/10 with a maximum
on-time of 5msec
This product isn’t designed for protection against radioactive rays.
REV. A