ML9050 Ver la hoja de datos (PDF) - Oki Electric Industry
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ML9050 Datasheet PDF : 71 Pages
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¡ Semiconductor
PEDL9050-02
ML9050/9051
Power supply circuit
This is the low power consumption type power supply circuit for generating the voltages
necessary for driving LCD devices, and consists of voltage multiplier circuits, voltage adjustment
circuits, and voltage follower circuits. In the power supply circuit, it is possible to control the
ON/OFF of each of the circuits of the voltage multiplier, voltage adjustment circuits, and voltage
follower circuits using the power control set command. As a result, it is also possible to use parts
of the functions of both the external power supply and the internal power supply. Table 7 shows
the functions controlled by the 3-bit data of the power control set command and Table 8 shows
a sample combination.
Table 7 Details of functions controlled by the bits of the power control set command
Control bit
D2
D1
D0
Function controlled by the bit
Voltage multiplier circuit control bit
Voltage adjustment circuit (V adjustment circuit) control bit
Voltage follower circuit (V/F circuit) control bit
Table 8 Sample combination for reference
State used
Circuit
Voltage
External
D2 D1 D0 Voltage
V
multiplier
V/F voltage input
multiplier Adjustment
pins *1
Only the internal power
1
1
1
supply is used
VIN
Used
Only V adjustment and
0
1
1
¥
V/F circuits are used
VOUT
OPEN
Only V/F circuits are used 0
0
1
¥
¥
V1
OPEN
Only the external power
0
0
0
¥
¥
¥
V1 to V5
OPEN
supply is used
*1: The voltage multiplier pins are the pins VC1+, VS1-, VC2+, VS2-, VC3+, VC4+, VC5+, and
VC6+.
If combinations other than the above are used, normal operation is not guaranteed.
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