Driver. BD7776ARFS Datasheet

BD7776ARFS Datasheet PDF


Part

BD7776ARFS

Description

7-Channel Power Driver

Manufacture

Rohm

Page 4 Pages
Datasheet
Download BD7776ARFS Datasheet


BD7776ARFS Datasheet
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

BD7776ARFS Datasheet
Electrical characteristics
(Unless otherwise noted, Ta=25, Vcc=SPVM=SLVM=12V, DVcc=AVM=LDVM=5V, VC=1.65V, RL=8Ω, RLSP=2Ω)
Parameter
Symbol MIN. TYP. MAX. Unit
Condition
Circuit
current
Sled motor
driver block
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Spindle
driver block
Focus
driver block
Tracking
driver block
Tilt
driver block
Loading
driver block
Others
Quiescent current 1
Quiescent current 2
Quiescent current 3
Standby-on current1
Standby-on current 2
Input dead zone (one side)
Input output gain
Output ON resistor
Output limit current
PWM frequency
Input dead zone (one side)1
Input dead zone (one side)2
Input output gain H
Input output gain L
Output ON resistor
Output limit current
PWM frequency
Output offset voltage
Output saturation Voltage
Voltage gain H
Voltage gain L
Output offset voltage
Output saturation Voltage
Voltage gain
Output offset voltage
Output saturation Voltage
Voltage gain
Output offset voltage
Output saturation Voltage 1
Output saturation Voltage 2
Voltage gain
VC drop-muting
Vcc drop-muting
IQ1 14 25
IQ2 7 12
IQ3 6.5 11
IST1 0 100
IST2 0 100
VDZSL
0
20 80
gmSL 0.75 1.0 1.25
RONSL
2.2
3.0
ILIMSL
0.85
1.0
1.15
fsl 100
VDZSP1
20
55
90
VDZSP2
20
220 450
gmSPH
2.3
3.0
3.7
gmSPL
0.46
0.6
0.74
RONSP
1.1
1.7
ILIMSP 1.3 1.55 1.8
fsp 167
VOFF
-20
0
20
VOHF 0.7 1.6
GVFH
19.6 21.6
23.6
GVFL
13.6 15.6 17.6
VOFT
-20
0
20
VOHT 0.7 1.6
GVT
19.6 21.6 23.6
VOFTL
-50
0
50
VOHTL
0.7
1.6
GVTL
19.6 21.6 23.6
VOFLD
-50
0
50
VOLD1
0.6
1.6
VOLD2
1.9
3.5
GVLD
15.5 17.5 19.5
VMVC
0.4
0.7
1.0
VMVcc 3.45 3.85 4.25
mA VccWhen Loading OFF
mA VccWhen Loading ON
mA DVcc
μA Vcc
μA DVcc
mV
A/V RSLLIM=3kΩ
Ω IL=500mA
A RSLLIM=3kΩ
kHz
mV VLRPM=L
mV VLRPM=H
A/V RSPLIM=1.3kΩ, VLRPM=L
A/V RSPLIM=1.3kΩ, VLRPM=H
Ω IL=500mA
A RSPLIM=1.3kΩ
kHz
mV
V IL=500mA
dB VLRPM=L
dB VLRPM=H
mV
V IL=500mA
dB
mV
V IL=500mA
dB
mV
V IL=500mALDVM=5V
V IL=500mALDVM=12V
dB
V
V
2/3
Package outlines
PRODUCT NUMBER
LOT NO.
HTSSOP-A44R (UNIT : mm)
REV. A


Features Datasheet pdf 1/3 Structure Product series Type Charac teristic Silicon Monolithic Integrate d Circuit 7ch Power Driver for CD,DVD± RW,DVD-RAM BD7776ARFS ・ 3-phase-sens or-less system, therefore don’t need three hall sensors. ・ Output current detection resister is not necessary wit h internally equipped detection circuit . ○ Absolute maximum ratings Paramet er POWER MOS Power supply voltage Prebl ock/BTL powerblock Power supply voltage PWM control block Power supply voltage Power dissipation Operating temperatur e range Storage temperature Junction te mperature Symbol SPVM,SLVM Vcc, AVM,LD VM DVcc Pd Topr Tstg Tjmax Limits 15 # 1 Unit V V V www.DataSheet4U.com 15 7 1.5 #2 W ℃ ℃ ℃ -20~ 70 -5 5~ 150 150 #1 POWER MOS output termi nals (29~32, 35~37pin) is contained . #2 PCB (70mm×70mm×1.6mm,occupied co pper foil is less than 3%,glass epoxy s tandard board) mounting. Reduce power b y 12mW for each degree above 25℃. Recommended operating conditions (Ta=-20~ +70℃ ) (Set the power supply voltage taking allowa.
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