Multimedia ICs
High voltage controller for CRT
displays
BA9755S
The BA9755S is an LSI chip with a chopper voltage controller designed to control the anode voltage of multiscan
monitors and other CRTs. There are two internal high-precision power supplies, each with an output voltage preci-
sion of 鹵1%. Using a high-precision voltage detection resistor makes it possible to set anode voltage without adjust-
ment. Other internal components include an output voltage error detector and an overcurrent detector, which detects
overcurrent when the power is turned on.
鈥?/div>
Applicationsand HDTV products
CRT displays
鈥?/div>
Featureschopper voltage controller.
1) Internal
2) Two internal high-precision power supplies, each
with an output voltage precision of 鹵1%.
3) Internal output voltage error detector.
4) Internal buffer circuit that directly drives power MOS-
FET for output drive.
鈥?/div>
Absolute maximum ratings (Ta = 25擄C)
Parameter
Applied voltage 1
Applied voltage 2
Power dissipation
Operating temperature
Storage temperature
Symbol
V
CC
1
V
CC
2
Pd
Topr
Tstg
Limits
18
鈭?/div>
1
20
鈭?/div>
2
600
鈭?/div>
1
鈥?25 ~ + 75
鈥?55 ~ + 125
Unit
V
V
mW
擄C
擄C
鈭?/div>
1
鈭?/div>
3
18pin
鈭?/div>
2
3pin
Reduced by 6.0mW for each increase in Ta of 1擄C over 25擄C.
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Recommended operating voltage (Ta = 25擄C)
Parameter
Applied voltage 1
Applied voltage 2
Symbol
V
CC
1
V
CC
2
V
CC
2
V
CC
1
Limits
11 ~ 13
11 ~ 16
Unit
V
V
鈭?/div>
Used with condition
1
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BA9755相關(guān)型號PDF文件下載
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