Datasheet
System Motor Driver Series for CD・DVD・BD Players
3ch System Motor Driver
For Car Audio
BD8271EFV
General Description
BD8271EFV is 3ch power driver developed for driving
stepper motor and DC motor (or actuator coil). Blu-ray’s
motor & coil can be driven, when used along with 6ch
DVD power driver.
Key Specifications
■
Power Supply Voltage
■
Operating Temperature Range
■
■
Output On Resistance (SLED)
Output Saturation Voltage (Actuator)
4.5V to 14V
-40°C to +85°C
2.2
Ω
(Typ)
0.9 V (Typ)
Features
■
Each driver of SLED (2ch) and Actuator (1ch) are
installed in a single-chip.
■
ON/OFF and the standby mode of 3ch can be
selected using two control terminals.
■
Built-in triangular wave generator circuit.
■
Adopts HTSSOP-B24 package that has high
power dissipation.
■
Built-in thermal shutdown function.
■
Highly effective SLED driver with PWM drive
system.
■
Built-in 2ch SLED driver that corresponds to the
stepper motor drive.
■
The actuator driver is linear BTL type.
Package
HTSSOP-B24
W(Typ)
D(Typ)
H(Max)
7.80mm x 7.60mm x 1.00mm
Applications
Car Audio
HTSSOP-B24
Typical Application Circuit
Figure 1. Application Circuit
○Product
structure：Silicon monolithic integrated circuit
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© 2013 ROHM Co., Ltd. All rights reserved.
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○This
product has no designed protection against radioactive rays.
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BD8271EFV
Pin Configuration
Pin Description
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Symbol
VMFC
PGND2
FCO-
FCO+
SAO1-
SAO1+
SAO2-
SAO2+
PGND1
N.C.
SARNF1
SARNF2
SA2INO
SA2INN
SA1INO
SA1INN
VCC
FINN
FINO
CTL2
CTL1
VC2
VC1
PREGND
Datasheet
(TOP VIEW)
VMFC
PGND2
FCO-
FCO+
SAO1-
SAO1+
SAO2-
SAO2+
PGND1
N.C.
SARNF1
SARNF2
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
PREGND
VC1
VC2
CTL1
CTL2
FINO
FINN
VCC
SA1INN
SA1INO
SA2INN
SA2INO
Figure 2. Pin Configuration
Function
Power supply for BTL
Power ground 2
Focus driver negative output
Focus driver positive output
Stepper driver 1 negative output
Stepper driver 1 positive output
Stepper driver 2 negative output
Stepper driver 2 positive output
Power ground 1
-
Stepper driver 1 current detection
Stepper driver 2 current detection
Output for stepper driver 2 pre-opamp
Inverting input for stepper driver 2 pre-opamp
Output for stepper driver 1 pre-opamp
Inverting input for stepper driver 1 pre-opamp
Pre-block power supply
Inverting input for focus driver pre-opamp
Output for focus driver pre-opamp
Driver logic control input 2
Driver logic control input 1
Control standard voltage input 2
Control standard voltage input 1
Pre-block ground
Block Diagram
Figure 3. Block Diagram
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BD8271EFV
Absolute Maximum Ratings
(Ta=25°C)
Parameter
MOS Output Power Supply Voltage
BTL Output Power Supply Voltage
Pre-Block Power Supply Voltage
Input Terminal Voltage 1
Input Terminal Voltage 2
Power Dissipation
Operating Temperature Range
Storage Temperature
Junction Temperature
Symbol
V
SAVM
,V
SARNF
V
VMFC
V
VCC
V
in1 (Note 2)
V
in2 (Note 3)
Pd
Topr
Tstg
Tjmax
Rating
15
(Note 1)
Datasheet
Unit
V
V
V
V
V
W
°C
°C
°C
15
15
V
VCC
V
SAVM
(Note 4)
1.1
4.0
(Note 5)
-40 to +85
-55 to +150
+150
(Note 1) Power MOS output terminals are contained.
(Note 2) Vin1 supplies the following terminals：CTL1, CTL2, Vc1, Vc2, FINN
(Note 3) Vin2 supplies the following terminals：SA1INN, SA2INN
(Note 4) Rated for 70mm×70mm×1.6mm, one layer substrate (back copper foil 0mm×0mm), Derated by 8.8mW/°C when operating above Ta=25°C.
(Note 5) Rated for 70mm×70mm×1.6mm, four layer substrate (back copper foil 70mm×70mm), Derated by 32.0mW/°C when operating above Ta=25°C.
Caution:
Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit
between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is operated over
the absolute maximum ratings.
Recommended Operating Conditions
(Ta=-40°C to +85°C)
Parameter
Pre-Block Power Supply Voltage
Actuator Driver Power Supply Voltage
(Note 1)
SLED Driver Power Supply Voltage
(Note 1)
(Note 1)
Symbol
V
VCC
V
VMFC
V
SARNF
Min
4.5
4.5
4.5
Typ
8.0
8.0
8.0
Max
14
V
VCC
V
VCC
Unit
V
V
V
(Note 1) Consider power consumption when deciding power supply voltage.
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BD8271EFV
Datasheet
Electrical Characteristics
(Unless otherwise noted, Ta=25°C, V
VCC
=V
SAVM
=8V, V
VMFC
=5V, V
VC1
=V
VC2
=1.65V, R
SARNF1
=R
SARNF2
=0.5Ω)
Parameter
<Circuit Current>
Standby Current
Quiescent Current
<SLED Motor Driver>
Input Dead Zone (one side)
Input-Output Gain
Input Offset Voltage
Input Bias Current
Output ON-Resistance
(TOTAL)
Output Limit Current
PWM Frequency
<BTL Driver>
Output Offset Voltage
Output Saturation Voltage
(TOTAL)
Voltage Gain
<CTL1, CTL2>
L Input Voltage
H Input Voltage
High Level Input Current
<Pre-opamp>
Input Offset Voltage
Input Bias Current
<Function>
VC1 Drop Mute Voltage
VC2 Drop Mute Voltage
VCC Drop Mute Voltage
VC1 Input Current
VC2 Input Current
V
MVC1
V
MVC2
V
MVCC
I
VC1
I
VC2
0.4
0.4
3.4
-
-
0.7
0.7
3.8
4
4
1
1
4.2
8
8
V
V
V
μA
μA
V
IOACT
I
BIASACT
-5
-300
0
-50
+5
-10
mV
nA
V
IL
V
IH
I
CTH
GND
2
-
-
-
50
0.8
VCC
100
V
V
μA
V
CTL1
, V
CTL2
=3.3V
V
OFFT
V
OFT
G
VFT
-50
-
10.5
0
0.9
12
+50
1.6
13.5
mV
V
dB
I
L
=500mA
V
DZSA
gm
SA
V
IOSA
I
BIASSA
R
ONSA
I
LIMSA
f
OSC
5
425
-5
-300
-
672
-
15
500
-
-50
2.2
800
113
30
575
+5
-10
3.7
928
-
mV
mA/V
mV
nA
Ω
mA
kHz
I
L
=500mA
I
ST
I
Q
-
-
0.6
11.2
0.9
17.0
mA
mA
At no load
Symbol
Limit
Min
Typ
Max
Unit
Conditions
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BD8271EFV
Application Information
Datasheet
1. Driver Control (CTL1, CTL2, VC1, VC2)
All driver output conditions are controlled by switching the CTL1 and CTL2 terminals to High and Low levels.
The table below shows the logic.
(1) High and Low levels
Terminal
Pin No
CTL1
Pin21
CTL2
Pin20
VC1
Pin23
VC2
Pin22
(2) Driver output conditions
CTL1 [Pin21]
CTL2 [Pin20]
L
Less than 0.8V
Less than 0.4V
H
More than 2V
More than 1V
L
L
H
H
L
H
L
H
SLED
(Note 1)
STBY
SB
ACTIVE
ACTIVE
(Note 1) Refer to
BTL
STBY
ACTIVE
MUTE
ACTIVE
the table No.(3).
(a) At VC1=L, stepper outputs become MUTE (VC1 Drop MUTE).
(b) At VC2=L, BTL outputs become MUTE (VC2 Drop MUTE).
(c) At STBY, pre-opamp, internal amplifier, and all outputs are OFF. Outputs become Hi-Z.
At MUTE, all outputs are OFF. Outputs become Hi-Z.
(d) The states of each terminal at STBY and MUTE
At STBY, input terminals (Pin13, 14, 15, 16, 18, 19) become Hi-Z and can not accept any input.
In this case, each VC1 and VC2 terminal (Pin23, 22) is pulled-down to GND with an internal resistance of
360kΩ (Typ).
At MUTE, BTL outputs are pulled-up to the voltage of VMFC/2 by an internal resistance of 20kΩ (Typ).
At VCC Drop MUTE, VC1, 2 Drop MUTE and Thermal Shut Down, outputs become Hi-Z same as MUTE.
(3)Mode table for SLED
Mode
Operation
Active
Normal operation
SB
Compulsion short brake
(Note 2)
(Note 2) In this mode, both outputs (positive and negative) of SLED driver become Low regardless of SAIN input.
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