LA6556
No.6493 - 2 / 8
/ Ta25
unit
VCC
5.6 13
V
/ Ta25 ,VCC1VCC28 V, VREF2.5V
[]
min
typ
max
unit
ON
ICC-ON
BTL-AMP : ON,
30
50
mA
LODING : OFF (1)
OFF
ICC-OFF
OFF (1)
10
15
mA
T-TSD
150
175
200
[VREF - AMP]
VREF - AMP VREF OFFSET
-10
10
mV
VREF
VREF IN
1
VCC-1.5
V
VREF -OUT
I-VREF OUT
CH1
2
5
mA
[BTL AMP] (CH1CH4)
VOFF
BTL AMP,
-50
50
mV
(2)
VIN
0
VCC-1.5
V
VO
RL8VO
, VO
-
(3) 5.7
6.2
V
VG
,
3.6
4.0
4.4
: BUFFER
SR
2
0.5
V / s
VMUTE -ON
ON, (4)
2
V
VMUTE -OFF OFF, (4)
0.5
V
[AMP] (CH1CH4)
VIN-OP
0
VCC-1.5
V
()
IOsink
2
mA
()
IOsource
(5)
300
500
A
VOFF -OP
-10
10
mV
CH11
VSW -OP1
CH1 (B) ,
2
V
VREF (6)
CH12
VSW -OP2
CH1 (A) ,
0.5
V
VREF (6)
[] (CH5, H)
VO-LOAD
/ , RL8
5.7
6.5
V
VCE -BREK
(8)
0.3
A
L
VIN-L
1
V
H
VIN-H
2
V
[] (PNP : 2SB632K )
5V
VOUT
IO200mA
4.8
5.0
5.2
V
REG -IN
REGINsink
PNP
5
10
mA
(9)
VOLN
6VVCC12V, IO200mA
10
100
mV
VOLD
5mAIO200mA
10
100
mV
(1) VCC1, VCC2
(2) AMPBUFFER AMP
(3) (8)
(4) :HON, :LOFF(High )
(5) 11k
(6) VIN1-SW :LAMPAMP-A, VREFVREF (2.5V)
LA6556
No.6493 - 3 / 8
(6) VIN1-SW :LAMP-A, VREFVREF (2.5V)
VIN1-SW :HAMP-B, VREFVREF (VREFIN)
(7) ()() / VCC
(8) (GND)ON
(9) IO200mA (/) (VCE)
(10) 5VREG10mA (typ)
:
.
1
FWD
CH5 (VLO) (FWD),
2
REV
CH5 (VLO) (REV),
3
VCC2
CH3, 4, 5, VCC1(VCC1)
4
VLO
-
(-)
5
VLO
()
6
VO4
CH4 ()
7
VO4
-
CH4 (-)
8
VO3
CH3 ()
9
VO3
-
CH3 (-)
10
VO2
CH2 ()
11
VO2
-
CH2 (-)
12
VO1
CH1 ()
13
VO1
-
CH1 (-)
14
VCC1
CH1, 2 (BTL) , VCC2(VCC2)
15
VIN1
CH1
16
VIN1
-
A
OP
-
AMP
-
A (-)
17
VIN1
A
OP
-
AMP
-
A ()
18
VIN1
-
B
CH1 AMP
-
B (-)
19
VIN1
B
CH1 AMP
-
B ()
20
VIN2
CH2
21
VIN2
-
CH2 (-)
22
VIN2
CH2 ()
23
VIN3
CH3
24
VIN3
-
CH3 (-)
25
VIN3
CH3 ()
26
REG
-
IN
PNP
27
REG
-
OUT
5VPNP
28
VREF
-
OUT
CH1VREF (2.5V : typ) VREF
29
VIN1(VREF)
-
SW AMP
-
A VREF (typ 2.5V) AMP
-
BVREF
30
VREF
-
IN
31
VIN4
CH4 ()
32
VIN4
-
CH4 (-)
33
VIN4
CH4
34
MUTE1
CH1 (BTL AMP) ON / OFF
35
MUTE2
CH2CH4 (BTL AMP) ON / OFF
36
S
-
GND
GND
1 (FR) GND (P-GND)S
-
GND ()
LA6556
No.6496- 4 / 7
LA6556
No.6493 - 5 / 8
-
-
-
-
MUTE1
CH2CH4
ON/OFF
CH1CH4
ON/OFF
-
VIN1 / VREF-SW
VIN1(VREF)-SW
5VREG(PNPTr)
L H
-
-
AMP-A
VIN1(VREF)SW
L : AMP-A
H : AMP-B
1
2
3
4
5
15
16
10
11
12
13
14
FR
6
7
8
9
17
18
VCC1
VO1
-
VO1
+
VO2
+
VO2-
VO3
-
P-GND
VO4
-
VO4+
REV
VO3
+
FWD
VIN1
-B
VIN1
+A
VIN1
-A
VIN1
VLO
+
VLO
-
VCC2
35
34
33
32
31
30
29
27
26
22
21
20
19
FR
23
24
25
36
28
VIN4
-
VIN4
+
MUTE2
VIN1
+B
VIN2
VIN3
VIN3
-
VIN3+
VIN2
-
VIN2
+
VIN4
VREF-IN
MUTE1
S-GND
REG-OUT
P-GND
REG-IN
MUTE2
-
-
-
-
-
AMP-B
VREF-OUT(CH1)
22k
11k
22k
11k
22k
11k
GND
22k
11k
GND
VIN1(VREF)-SW
L : VREF (2.5V)
H : VREF
GND
HM1027
Top view
LA6556
No.6493 - 6 / 8
1
FR
FR
VCC1
VO1
-
VO1
+
VO2
+
VO2
-
VO3
-
VIN4
-
VIN4
+
VO4
-
VO4
+
REV
VO3
+
FWD
VIN1
+A
MUTE2
VIN1
-B
VIN1
+B
VIN2
VIN1
-A
VIN1
VIN3
VIN3
-
VIN3
+
VIN2
-
VIN2
+
VLO
+
VLO
-
VIN4
VCC2
VREF-IN
MUTE1
S-GND
VCC
5VREG
VCC
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
TRACKING
FOCUS
SPINDLE
SLED
VREF
SW
MUTE1
MUTE2
LOADING
ELEVETOR
0.1F
0.1F
2.2
2.2
2.2
0.1F
2.2
2.2
0.1F
0.1F
LA6556
VIN1(VREF)-SW
VREF-OUT(CH1)
REG-IN
REG-OUT
P-GND
P-GND
HM2005
Top view
17
VIN1
A
19
VIN1
B
16
VIN1
-
A
18
VIN1
-
B
15
VIN1
22
VIN2
21
VIN2
-
20
VIN2
25
VIN3
24
VIN3
-
23
VIN3
32
VIN4
-
31
VIN4
33
VIN4
1
FWD
2
REV
12
VO1
13
VO1
-
10
VO2
11
VO2
-
8
VO3
9
VO3
-
6
VO4
7
VO4
-
34
MUTE1
35
MUTE2
LA6556
No.6493 - 7 / 8
(CH1CH4)
High
Low
/ / /
4
CH1CH4
BTL AMP CH1CH4
ON / OFF
MUTE : High
ON
MUTE : Low
OFF
S-GND
VIN
VIN
-
VIN
VCC 3
(14)
17
36
(19,22,25,31)
15
16
(20,23,33)
(18,21,24,32)
FWD
REV
S-GND
50k
50k
50k
50k
2
1
36
VO
VCC
P-GND
FR
3
(14)
6
(7,8,9,10,11,12,13)
MUTE
S-GND
100k
100k
VCC1 14
34
36
(35)
HM0028
HM0029
HM0030
HM0031
H
1 High
2 ON
VLO
, VLO
-
GND
MUTE (VCC)
VCC1, VCC2
VIN1(VREF)-SWCH1 / VREF
CH1VREF
LA6556
PS No.6493 - 8 / 8
FWD
REV
L
H
L
H
VLO+
OFF
H
L
L
VLO-
OFF
1
()
2
OFF
L
H
L
L
H
CH1 (BTL)
CH2 (BTL)
CH3 (BTL)
CH4 (BTL)
CH5 (H)
MUTE2
MUTE1
VCC1
VCC2
VIN1-SW
VREF
(CH1)
L
H
VREF
VIN1-A(AMP-A)
VREF(2.5Vtyp)
VIN1-B(AMP-B)
0.5V
2V
(2.5V : typ)
VIN1-A
VIN1-B
VIN1-B(VREF)-SW
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