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參數(shù)資料
| 型號(hào)： | BD7961FM |
| 廠商： | Rohm CO.,LTD. |
| 英文描述： | Power driver IC for CD changer |
| 中文描述： | 功率換光盤(pán)驅(qū)動(dòng)器IC |
| 文件頁(yè)數(shù)： | 8/10頁(yè) |
| 文件大?。?/td> | 175K |
| 代理商： | BD7961FM |
BD7961FM
Optical disc ICs
8/9
(6) The loading drivers operate according to the following logic.
FWD
INPUT
OUTPUT
OUT
+
Function
High impedance
REV mode
FWD mode
Brake mode
REV
OUT
L
H
L
H
L
L
H
H
Hi Z
L
H
L
Hi Z
H
L
L
The output voltage can be changed by adjusting the voltage input to the LDCONT terminal (gain of 6dB Typ.).
However, even if the input voltage is increased excessively, the output voltage will not exceed the max. output voltage that
depends on the supply voltage.
(7) Supply the same voltage to V
CC
1 (pin25), V
CC
2 (pin28) and V
CC
3 (pin26).
Insert by the pass capacitor (approx. 0.1
μ
F) between V
CC
pin and GND pin of IC as near as possible.
(8) Connect the radiating fin with external GND.
(9) Output pin is to avoid short-circuit with V
CC
, GND and other output pins.
An integrated circuit is damaged, and smoke may come out by the case.
!
Electrical characteristic curves
0
5
10
15
0
10
5
15
20
25
30
C
C
SUPPLY VOLTAGE : V
CC
(V)
Fig.5 Circuit current characteristic
MUTE
=
H
MUTE
=
L
RegV
CC
=
POW V
CC
BIAS
=
V
CC
1.5
0
0.5
1.0
0.5
1.0
1.5
0
5
5
O
O
INPUT VOLTAGE : V
IN
(V)
Fig.6 Input-output characteristic
R
=
20
R
=
8
V
CC
=
8V, BIAS
=
2.5V
0
500 600 700
900
800
200 300 400
100
1000
0
1.5
1.0
0.5
0.5
1.0
1.5
2.0
2.0
L
L
LOAD CURRENT : I
L
(mA)
Fig.7 Output load current regulation
V
CC
=
=
2.5V
V
IN
=
8V, BIAS
CC
0
5
5
0
5
5
O
O
LDCONT VOLTAGE : V
LD
(V)
Fig.8 Input-output characteristic
20
+
47
μ
H
8
+
47
μ
H
(FWD)
(REV)
V
CC
=
8V,
LDCONT=Sweep
0
500 600 700
900
800
200 300 400
100
1000
0
0.3
0.2
0.1
0.1
0.2
0.3
0.4
0.7
0.6
0.5
0.4
L
L
LOAD CURRENT : I
L
(mA)
Fig.9 Output load current regulation
V
CC
=
8V, LDCONT
=
8V
FWD
=
H (8V)
REV
=
L (0V)
0
5
6
7
9
8
2
3
4
1
10
0
1.5
1.0
0.5
3.5
2.5
3.0
2.0
R
R
SUPPLY VOLTAGE : V
CC
(V)
Fig.10 Reg1 power supply characteristic
I
O
=
500mA
I
O
=
200mA
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