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PDF BD7961FM Data sheet ( Hoja de datos )
| Número de pieza | BD7961FM | |
| Descripción | Power driver IC for CD changer | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de BD7961FM (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
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Optical disc ICs
Power driver IC for CD changer
BD7961FM
BD7961FM
BD7961FM is a 6-channel driver IC developed for CD changer. In addition to the 4-channel BTL driver and the 2-channel
loading driver, the 3.3V regulator and 5.0V regulator used in the peripheral circuit are also incorporated. The size
reduction of the set is achieved by integrating functions that were used in two chips into a single chip.
!Applications
CD changer
!Features
1) This circuit is a 6-channel driver IC consisting of four BTL drivers and two loading drivers.
2) Two wide dynamic range loading drivers of MOS output (RON=1.0Ω).
3) The circuit is provided with loading driver voltage setting terminals.
4) A 5.0V regulator and a 3.3V regulator are built in.
(Each regulator has an external PNP transistor and an ON/OFF switch)
5) The circuit has a mute switch.
6) A thermal shutdown circuit is built in.
7) Since HSOP-M36 power package is used, the set requires a reduced space.
!Absolute maximum ratings (Ta=25°C)
Parameter
Symbol
Limits
Supply voltage
Power dissipation
VCC 15
Pd 2200∗
Operating temperature range
Topr
−35 to +85
Storage temperature range
Tstg
−55 to +150
∗ Reduced by 17.6mW for each increase in Ta of 1°C over 25°C, on less than 3%
(percentage occupied by copper foil), 70mm×70mm, t=1.6mm, glass epoxy mounting.
Unit
V
mW
°C
°C
!Recommended operating conditions (Ta=25°C)
Parameter
Symbol
Min.
Typ.
Max.
Supply voltage 1 VCC1 4.5 8.0 14.0
Supply voltage 2 VCC2 4.5 8.0 14.0
Supply voltage 3∗
VCC3
6.0
8.0 14.0
∗ When REG2 (5.0-V regulator) is not used, the supply voltage3 (VCC3) is 4.5 to 14.0V.
Unit
V
V
V
1/9
1 page  
Optical disc ICs
!Measurement circuits
BD7961FM
VB
A
IQB
36
3
47µF
21
SW2
12
SW2
3
47µF
OUT_LD
(CH6)
35 34
2SB1182 2SB1182
VCC3
VMUTE
IQREG2
IQREG1
A
IMUTE
AA
A
IQ3
33 32 31 30 29 28
CH6
BIAS
MUTE
(CH1~CH4)
+ − −+
(POW VCC
CH5/6)
REG2
REG1
(POW GND
CH5/6)
CH5
123
+−
Control
logic
FR
REG2 SW
−+
Control
logic
RF
REG1 SW
456789
(CH5)
OUT_LD
AA AAAA
IQ5F IQ5R IQ6R IQ6F IQREGSW2 IQREGSW1
LDINF LDINR LDINR LDINF REGSW REGSW
LDCONT LDCONT
VCC2 VCC1
A
IQ2
27 26
IQ1 ILDC2
AAA
ILDC1
25 24 23
OUT_A
(CH4)
22 21
CH4
OUT_A
(CH3)
20 19
CH3
(REG GND)
(PRE VCC (POW VCC
REG VCC) CH1~4)
LD
CONT1
LD
CONT2
−+
Level shift
−+
Level shift
47k
+−
47k
+−
23.5k
23.5k
47k
+−
47k
+−
Level shift
−+
Level shift
−+
23.5k
23.5k
CH2
CH1
10 11 12 13 14 15 16 17 18
VIN VIN VIN VIN
(CH2)
OUT_A
(CH1)
OUT_A
The resistance values
are indicated in [Ω]
OUT_A
Fig.1
OUT_LD
+ V VO
RL=8Ω
RL
Fig.2
V
VOLF
VOLD
V
SW1
21
SW1 V
VOLR
12
IDF IDR
Fig.3
5/9
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet BD7961FM.PDF ] | |
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