Power Driver. BD7998EFS Datasheet

BD7998EFS Driver. Datasheet pdf. Equivalent

Part BD7998EFS
Description 6ch Power Driver
Feature Structure Silicon Monolithic Integrated Circuit 1/3 Product series Type 6ch Power Driver for CD-.
Manufacture Rohm
Datasheet
Download BD7998EFS Datasheet




BD7998EFS
Structure
Silicon Monolithic Integrated Circuit
1/3
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
Vcc=SLVDD,AVM
15
V
PWM control block power supply voltage
DVcc
7V
Power dissipation
Pd
2.0 2
W
Operating temperature range
Topr
-4085
Storage temperature
Tstg
-55150
Joint part temperature
Tjmax
150
#1 POWER MOS output terminals (1720, 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
SLVDD=Vcc
AVM
AVM
4.3
12
5.0
14
Vcc
V
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



BD7998EFS
2/3
Electrical characteristics
Circuit current
Sled driver
block
Spindle driver
block
Actuator driver
block
Loading driver
block
Others
Parameter
Quiescent current1
Quiescent current2
Quiescent current3
Standby-on current1
Standby-on current2
Input dead zone (one side)
Input output gain
Output On resistortop and bottom
Output limit current
PWM frequency
Input dead zone (one side)
Input output gain
Output On resistortop and bottom
Output limit current
PWM frequency
Output offset voltage
Output saturation voltage
Voltage gain
Output offset voltage
Output saturation voltage
Voltage gain
VC drop-muting
Vcc drop-muting
(Unless otherwise noted, Ta=25, Vcc=SPVM=SLVM=12V, DVcc=AVM=5V,
SPRNF=0.33Ω, SLRNF=0.5Ω, VC=1.65V, RL=8Ω, RLSP=2Ω)
Symbol
MIN. TYP. MAX. Unit
Condition
IQ1
IQ2
IQ3
IST1
IST2
12 20 mA VccLoading OFF
7 12 mA VccLoading ON
2.2 4.4 mA DVcc
0.18 0.4 mA Vcc
0.18 0.4 mA DVcc
VDZSL
gmSL
RONSL
ILIMSL
fosc
15 40 65 mV
0.8 1.0 1.2 A/V SLRNF=0.5Ω
2.65 3.8 Ω IL=500mA
0.91 1.05 1.19
A SLRNF=0.5Ω
100 kHz
VDZSP
gmSP
RONSP
ILIMSP
fosc
20 50 90 mV
2.4 3.0 3.6 A/V SPRNF=0.33Ω
0.9 1.7 Ω IL=500mA
1.30 1.51 1.73
A SPRNF=0.33Ω
100 kHz
VOFFT
VOFT
-50 0 50 mV
0.95 1.75 V IL=500mA
GVFT
16.0 17.5 19.0 dB
VOFLD
VOLD
-50 0 50 mV
2.45 3.5 V IL=500mA
GVLD
16.0 17.5 19.0 dB
VMVC
0.4 0.7 1.0 V
VMVcc
3.4 3.8 4.2 V
Package outlines
BD7998EFS
Lot No.
REV. A
(UNIT : mm)
Drawing No. : EX195-5002







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