BA6780 데이터 시트보기 (PDF) - ROHM Semiconductor
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BA6780 Datasheet PDF : 14 Pages
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Optical disc ICs
BA6780FP-Y
VIN2
FIN2 RIN2 Cτ2
25
24
23
22
21
20
VIN
1/2
GOVERNOR DRIVER
FWD/REV CONTROLLER
THERMAL
SHUT DOWN
VEE
REVERSIBLE DRIVER
FWD/REV CONTROLLER
VIN
IOUT
1
2
3
4
5
6
VIN1
FIN1 RIN1 Iout
BA6780 / BA6780FP-Y
VEE
FBIN− FBIN+ OUT2+
OUT2−
19
18
17
16
15
14
VEE
VEE
10k
10k
DRIVE BUFFER
10k
10k
10k
10k
10k 3.2k
10k
Vref
Vref
10k 10k
Vref
10k
Vref
Vref
VCC
VEE
40k 40k
20k
VEE
Vref
17.1k
VEE
VCC
Vconst
7
8
9
10
Vref
Vreg
VCC
DRIVE BUFFER
11
12
OUT1+
13
OUT1−
Pin No.
Pin name
1
N.C.
2
VIN1
3
N.C
4
FIN1
5
RIN1
6
Iout
7
Vref
8
Vreg
9
VCC
10
N.C.
11
OUT1+
12
N.C.
13
OUT1−
14
OUT2−
15
N.C.
16
OUT2+
17
FB IN +
18
FB IN −
19
VEE
20
Cτ 2
21
R IN 2
22
F IN 2
23
N.C.
24
VIN2
25
N.C.
∗1 Refer to operating notes.
I/O
Function
−
I
Input pin for setting high output voltage for the reversible driver
−
I
Input pin for forward control signal for the reversible driver
I
Input pin for reverse control signal for the reversible driver
O
Governor load current detector output (open collector∗1 )
O
Internal reference voltage pin
O
4.6V constant voltage output
I
Power supply (+)
−
O
Reversible driver output (+)
−
O
Reversible driver output (−)
O
Governor output (−)
−
O
Governor output (+)
I
Governor load current detector amplifier input (+)
I
Governor load current detector amplifier input (−)
I
Power supply (−) (connection within substrate)
I
For connection of capacitor for the governor PWM filter
I
Governor reverse control signal input
I
Governor forward control signal input
−
I
Input pin for setting high output voltage for the governor
−
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