BA9756FS
| Model | BA9756FS |
| Description | High-voltage control circuit for CRT displays |
| PDF file | Total 9 pages (File size: 123K) |
| Chip Manufacturer | ROHM |
BA9756FS
Multimedia ICs
High-voltage control circuit for CRT
displays
BA9756FS
The BA9756FS is LSIs that control CRT anode voltage in multi-scan monitors and similar devices, using
a chopper-type voltage control circuit. The internal sawtooth wave generator circuit uses automatic gain control
(AGC) to enable coverage of a wide range from 30kHz to over 150kHz. The BA9756FS is equipped with an internal
high-precision voltage source featuring an output voltage precision of ± 0.7%.
!Applications
CRT displays, HDTVs, others
!Block
diagram
20
V
CC
1
19
18
17
16
15
V
CC
2
14
13
12
11
1
2
!Absolute
maximum ratings
(Ta=25°C)
Parameter
Power supply voltage 1
Power supply voltage 2
Power dissipation
Operating temperature
Storage temperature
Symbol
V
CC
1
V
CC
2
Pd
Topr
Tstg
Limits
18
20
750
*
1
- 25~+80
- 55~+125
Unit
V
V
mW
˚C
˚C
*
1
When mounted on a 70mm
×
70mm
×
1.6mm glass epoxy board.
Reduced by 7.5mW for each increase in Ta of 1˚C over 25˚C.
!Recommended
operating conditions
(Ta=25°C)
Parameter
Power supply voltage 1
Power supply voltage 2
Symbol
V
CC
1
V
CC
2
Min.
11
11
Typ.
-
-
Max.
17
17
Unit
V
V
+
SAW GEN.
3
4
5
–
!Features
1) Internal chopper-type voltage
control circuit.
2) Internal buffer circuit enables direct
drive of Power MOSFET for output
drive.
3) Internal high-precision voltage
source offers output voltage
precision of ± 0.7%.
Buffer
+
+
–
M/M
9.0V
REF
GND
6
7
8
9
10
