BA5956FM_11 [ROHM]
Silicon Monolithic Integrated Circuit; 硅单片集成电路
| 型号： | BA5956FM_11 |
| 厂家： | 
ROHM |
| 描述： | Silicon Monolithic Integrated Circuit |
| 文件： | 总12页 (文件大小：333K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
1/11
STRUCTURE
PRODUCT SERIES
TYPE
PACKAGE OUTLINES
POWER DISSIPATION
BLOCK DIAGRAM
APPLICATION
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Silicon Monolithic Integrated Circuit
Power driver for CD/DVD player
BA5956FM
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
TEST CIRCUIT
◎Features
○2 channel current feedback type driver, 3 channel BTL driver.
○Employs the HSOP-M36 power package for compaction.
○Has a wide dynamic range.
○The thermal shutdown circuit is built.
○Mute circuit is built in. ( except for loading driver )
○Apower supply is divided into 4 systems.
【PreVcc, PowVcc1=actuator, PowVcc2=loading motor, PowVcc3=sled motor, spindle motor】
◎Absolute Maximum Rating (Ta=25℃)
Item
Supply voltage
Power dissipation
Symbol
PreVcc,PowVcc
Pd
Rating
18
Unit
Ｖ
2.2*1
Ｗ
1*2
-35～85
-55～150
Ａ
Maximum output current
Operating temperature range
Storage temperature range
Iomax
Topr
Tstg
℃
℃
*1 Rating for 70 ㎜×70 ㎜(size), 1.6 ㎜(thickness), copper foil occupation ratio less than 3％,
And use of glass-epoxy substrate.
When this IC is used above Ta=25℃, note that this rating decreases 17.6mW each time
the temperature increases 1℃.
*2 This rating of permissible dissipation must not exceedASO.
◎Operating Supply Range
PreVcc
4.5 ～ 14 （Ｖ）
PowVcc
4.5 ～PreVcc（Ｖ）
REV. B
2/11
●ELECTRICAL CHARACTERISTICS
（Unless otherwise noted, Ta=25℃, PreVcc=PowVcc3=12V, PowVcc1=PowVcc2=5V, BIAS=1.65V, RL=8Ω,
Rd=0.5Ω,C=100pF）
Test circuit
Parameter
Quiescent current
symbol
IQ
MIN
－
TYP
34
MAX
44
Unit
mA
V
Condition
Figure.5
Figure.5
Figure.5
Voltage for mute ON
Voltage for mute OFF
<Actuator driver >
VMON
VMOFF
－
0
0.5
－
－
V
2.0
Output offset current
Maximum output voltage
Trans conductance
IOOF
VOM
Gvc
mA
V
Figure.5
Figure.5
Figure.5
-6
0
6
－
VIN=±1.65V
3.6
1.5
4.0
1.8
VIN=BIAS±0.2V
A/V
2.1
< Sled motor driver pre OPAMP & OPAMP>
Common mode input range
Input offset voltage
VICM
VIOFOP
IBOP
VOLOP
ISO
－
0
V
Figure.5
Figure.5
Figure.5
Figure.5
Figure.5
Figure.5
0.4
-6
10.5
6
mV
nA
V
Input bias current
－
－
－
0.2
－
－
300
0.5
－
Low level output voltage
Output source current
Output sink current
mA
mA
0.5
0.5
ISI
－
< Sled motor driver >
Output offset voltage
Maximum output voltage
Closed loop voltage gain
< Loading motor driver >
Output offset voltage
Maximum output voltage
Gain error by polarity
< Spindle motor driver >
Output offset voltage
Maximum output voltage
Gain error by polarity
VOOFSL
VOMSL
GVSL
mV
V
Figure.5
Figure.5
Figure.5
-50
8.0
0
50
－
VIN=±1.65V
VIN=±0.2V
9.5
dB
17.6
19.6
21.6
VOOFLD
VOMLD
GVLD
mV
V
Figure.5
Figure.5
Figure.5
-50
3.5
0
50
－
VIN=±1.65V
4.0
VIN=BIAS±0.2V
dB
15.7
17.7
19.7
VOOFSP
VOMS
GVSP
mV
V
Figure.5
Figure.5
Figure.5
-50
8.0
0
50
－
VIN=±1.65V
9.5
VIN=BIAS±0.2V
dB
15.7
17.7
19.7
○ This product is not designed for protection against radioactive rays.
REV. B
3/11
REV. B
4/11
Electrical characteristic curves
3
2
1
0
0
25
50
75
100
125
150
AMBIENT TEMPERATURE, Ta /℃
Pd；Power Dissipation
Rating for 70mm×70mm(size), 1.6mm(thickness), copper foil occupation ratio less than 3%, and use of
glass-epoxy substrate.
Figure 2 POWER DISSIPATION
REV. B
5/11
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
PVcc3
PVcc2
PGND
-
+
PreVcc
-
+
10K
10K
10K
20K
Spindle
Driver
Sled
Driver
Loading
Driver
25K
15K
Thermal
shut down
PVcc2
PVcc3
PVcc1
+
-
×2
7.5K
20K
10K
Det. Amp.
+
-
+
-
20K
10K
7.5K
Actuator
Driver
Actuator
Driver
×2
MUTE
7.5K
7.5K
+
-
PreGND
PVcc1
PGND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Unit of resistance:
Figure 3 BLOCK DIAGRAM
● Pin description
No
1
2
3
4
5
6
7
Pin name
LDBIAS
BIAS
Pin description
Input for bias voltage (Loading driver)
Input for bias: voltage
Input for focus driver
Connection with capacitor for error amplifier 1
Connection with capacitor for error amplifier 2
Input for mute control
No
19
20
21
22
23
24
25
Pin name
VOLD (－)
VOLD (+)
VOSL (－)
VOSL (+)
VOSP (－)
VOSP (+)
PGND2
Pin descrition
Inverted output of loading
Non inverted output of loading
Inverted output of sled
Non inverted output of sled
Inverted output of spindle
Non inverted output of spindle
FCIN
CFCerr1
CFCerr2
MUTE
TKIN
Input for tacking driver
GND for power block of loading, sled and
spindle driver
8
9
CTKerr1
CTKerr2
PreGND
PVcc1
VNFFC
PGND1
VNFTK
VOTK(－)
Connection with capacitor for error amplifier 1
Connection with capacitor for error amplifier 2
GND for pre-drive block
Vcc for power block of actuator
Feedback for focus driver
GND for power block of actuator
Feedback for tracking driver
26
27
28
29
30
31
32
33
34
35
36
PVcc2
PVcc3
PreVcc
SPIN
OPOUTSL
OPINSL(－)
Vcc for power block of loading driver
Vcc for power block of sled and spindle driver
Vcc for pre-drive block
Input for spindle driver
Sled Pre OP amplifier output
Sled Pre OP amplifier invert input
10
11
12
13
14
15
16
17
18
OPINSL (+) Sled Pre OP amplifier non invert input
LDIN
OPOUT
OPIN(－)
OPIN (+)
Inverted output of tracking
Input for loading driver
OP amplifier output
OP amplifier invert input
OP amplifier non invert input
VOTK (+) Non inverted output of tracking
VOFC(－)
VOFC (+)
Inverted output of focus
Non inverted output of focus
notes) Symbol of + and ‐(output of drivers) means polarity to input pin.
(For example if voltage of pin3 is high , pin18 is high.)
REV. B
6/11
-
+
- +
-
+
Loading BIAS
k
01k
01
m
1
.0
-com
SERVO
Figure 4 APPLICATION
REV. B
7/11
8
8
8
OPAMP
OPAMP
5V
12V
IQ
12V
VIN3
VIN5
Vo5
Vo4
Vo3
35 34 33 32 31 30 29
21
36
28
27 26 25 24 23 22
20 19
PGND
PreVcc
PVcc3 PVcc2
10K
Spindle
Driver
Sled
Driver
Loading
Driver
20K
Thermal
shut down
PVcc2
PVcc3
25K
15K
10K
10K
PVcc1
7.5K
7.5K
×2
×2
7.5K
7.5K
20K
10K
20K
10K
Actuator
Driver
Actuator
Driver
Det. Amp.
PreGND
PVcc1
PGND
MUTE
6
1
2
3
7
4
5
8
9
10
13
14
15
16
17
18
11
12
VIN1
VIN2
Io
0.5
8
Io
0.5
8
100pF
100pF
1.65V
1.65V
5V
Vo1
MUTE
100H
Vo2
100H
INP
INM
OUT
VOOF
VBOP
4
3
1
1M
2
2
1M
VBOP
10k
1
SW1
10k
SW3
1
1
BIAS
2
2
SW2
SW4
IOP
VINOP
VOOP
OPAMP
Figure5 TEST CIRCUIT
● Measurement circuit switch table
REV. B
8/11
Switch
Input
Measureme
nt point
Symbol
Condition
SW1
SW2
SW3
SW4
VIN1
VIN2
VIN3
VIN5
VINOP
－
MUTE
IQ
VMON
VMOFF
IQ
IQ
IQ
1
1
1
1
1
1
2
2
2
1
1
1
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
2.0V
2.0V
0.5V
－
－
<Actuator driver>
IOOF
VOM
Gvc
－
－
－
IO
VO1,2
IO
1
1
1
1
2
2
2
1
1
1
1.65V
±1.65V
±0.2V
1.65V
±1.65V
±0.2V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
2.0V
2.0V
2.0V
1
VIN1,2=0, 3.3V
VIN=1.45, 1.85V
1
<Sled motor driver pre OPAMP & OPAMP>
IBOP
VIOFOP
VOLOP
ISO
－
－
VBOP
VOOF
VOOP
VOOP
VOOP
2
1
1
1
1
1
1
2
1
1
3
2
1
2
2
1
1
1
2
2
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
2.0V
2.0V
2.0V
2.0V
2.0V
12V
－
ISI
－
<Sled motor driver>
VOOFSL
VOMSL
GVSL
－
VO4
VO4
VO4
1
1
2
2
2
1
1
1
1
1
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
2.0V
2.0V
2.0V
±1.65V
±0.2V
1
VINOP=0, 3.3V
1
VINOP=1.45, 1.85V
<Loading driver>
VOOFLD
VOMLD
GVLD
－
－
－
VO3
VO3
VO3
1
1
1
1
2
2
2
1
1
1
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
±1.65V
±0.2V
1.65V
1.65V
1.65V
2.0V
2.0V
2.0V
1
VIN3=0, 3.3V
1
VIN3=1.45, 1.85V
<Spindle driver>
VOOFSP
VOMS
GVSP
－
－
－
VO5
VO5
VO5
1
1
1
1
2
2
2
1
1
1
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
±1.65V
±0.2V
2.0V
2.0V
2.0V
1
VIN5=0, 3.3V
1
VIN5=1.45, 1.85V
● EQUIVALENT CIRCUIT OF TERMINALS
REV. B
9/11
2k
2k
35,36 PIN
31,32 PIN
（
）
30 PIN
34 PIN
10k
10k
10k
10k
3,7,29,33 PIN
15,17 PIN
10k
VREF
REV. B
10/11
10k
10k
(+)
16,18,20,22,24 PIN
1,2 PIN
25k
75k
(-)
19,21,23PIN
10k
6 PIN
10k
50k
50k
12,14 PIN
20k
15k
7.5k
5,9 PIN
4,8 PIN
7.5k
●Notes on use
REV. B
11/11
1. Thermal-shut- down circuit built-in. In case IC chip temperature rise to 175℃ (typ.) thermal-
shut-down circuit operates and output current is muted. Next time IC chip temperature falls below
150℃(typ.)
2. In case mute-pin voltage under 0.5V or opened, quiescent current is muted. Mute-pin voltage should
be over 2.0V for normal application.
3. In case supply voltage falls below 3.5V (typ.), output current is muted. Next time supply voltage rises
to 3.7V(typ.), the driver blocks start.
4. Bias-pin (pin1 and pin2) should be pulled up more than 1.2V. In case bias-pin voltage is pulled down
under 1.0V (typ.), output current is muted.
5. In case a capacitance load is connected to the OP amplifier output, the amplifier phase margin
decreases, which causes the peak or oscillator.
When connecting such load, insert a resistance in series between the output and the capacitance load
and take a full consideration for frequency characteristics, to prevent problems during practical use.
6. Insert the by-pass capacitor between Vcc-pin and GND-pin of IC as possible as near (approximately
0.1F).
7. Heat dissipation fins are attached to the GND on the inside of the package. Make sure to connect
these to the external GND
8. Avoid the short-circuits between:
Output pin and Vcc
Output pin and GND
Output pins
If this caution is ignored, IC damage may cause smokes.
9. Examine in consideration of operating margin, when each driver output falls below sub-voltage of
IC (GND) due to counter-electromotive-force of load.
< Supplement >
Current feedback driver
Trans conductance (output current/input voltage) is shown as follws.
1
gm
(A／V )
Rd RWIRE
RWIRE: ≒0.075（±0.05）（Typ.）:Au wire
REV. B
Notice
N o t e s
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which can be obtained from ROHM upon request.
Examples of application circuits, circuit constants and any other information contained herein
illustrate the standard usage and operations of the Products. The peripheral conditions must
be taken into account when designing circuits for mass production.
Great care was taken in ensuring the accuracy of the information specified in this document.
However, should you incur any damage arising from any inaccuracy or misprint of such
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The technical information specified herein is intended only to show the typical functions of and
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The Products specified in this document are intended to be used with general-use electronic
equipment or devices (such as audio visual equipment, office-automation equipment, commu-
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