BA9755S
| Model | BA9755S |
| Description | High voltage controller for CRT displays |
| PDF file | Total 10 pages (File size: 137K) |
| Chip Manufacturer | ROHM |
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 ±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.
•
Applicationsand HDTV products
CRT displays
•
Featureschopper voltage controller.
1) Internal
2) Two internal high-precision power supplies, each
with an output voltage precision of ±1%.
3) Internal output voltage error detector.
4) Internal buffer circuit that directly drives power MOS-
FET for output drive.
•
Absolute maximum ratings (Ta = 25°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
∗
1
20
∗
2
600
∗
1
– 25 ~ + 75
– 55 ~ + 125
Unit
V
V
mW
°C
°C
∗
1
∗
3
18pin
∗
2
3pin
Reduced by 6.0mW for each increase in Ta of 1°C over 25°C.
•
Recommended operating voltage (Ta = 25°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
∗
Used with condition
1
