BA9756 Datasheet PDF - ROHM Semiconductor
| Part Number | BA9756 | |
| Description | High-voltage control circuit for CRT displays | |
| Manufacturers | ROHM Semiconductor | |
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Multimedia ICs
BA9756FS
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 19 18 17 16 15 14 13 12 11
VCC1
VCC2
!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
SAW GEN.
M/M
9.0V
REF
GND
1 2 3 4 5 6 7 8 9 10
!Absolute maximum ratings (Ta=25°C)
Parameter
Symbol
Limits
Power supply voltage 1
VCC1
18
Power supply voltage 2
Power dissipation
VCC2
Pd
20
750*1
Operating temperature
Topr
- 25~+80
Storage temperature
Tstg
- 55~+125
*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.
Unit
V
V
mW
˚C
˚C
!Recommended operating conditions (Ta=25°C)
Parameter
Power supply voltage 1
Power supply voltage 2
Symbol
VCC1
VCC2
Min.
11
11
Typ.
-
-
Max.
17
17
Unit
V
V
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Multimedia ICs
BA9756FS
!Electrical characteristics (unless otherwise noted, Ta=25°C, Vcc=15V)
Parameter
Symbol
<Hd input pin>
Input high level voltage
VIH
Input low level voltage
VIL
Input high level current
IIH
Input low level current
IIL
<Monostable multivibrator>
Delay time
Tdl
<SAW GEN>
Output high level
HOS
Output low level
LOS
Output level f characteristic fSAW
<Reference voltage supply>
Output voltage
VREF9
Max. output current
Irmax9
Output voltage thermal
characteristics
TREF9
Thermal shutdown
Tdow
Min. Typ.
3.0 -
--
- 360
-0
1.80 2.15
8.0 9.0
0 0.15
150 200
8.937
10
9.0
-
- ± 0.1
100 -
Max.
VCC
1.5
530
-1
2.50
10.0
0.35
-
9.063
-
± 0.3
-
Unit
Conditions
Test Circuit
V-
V-
µA VIN = 15V
µA -
Fig.10
Fig.10
Fig.10
Fig.10
µs R = 10kΩ,C = 220pF
Fig.10
V-
V-
kHz -1dB drop from 30kHz
Fig.10
Fig.10
V-
mA -
Guaranteed design pa—rameter
%
at Ta = 25→0°C, 25→75°C
deg Guaranteed design parameter
Fig.10
Fig.10
Fig.10
Fig.10
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for BA9756 electronic component. |
| Information | Total 9 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ BA9756.PDF Datasheet ] | |
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