S6A0092 Datasheet, PDF (37/54 Pages) Samsung semiconductor – 80 SEG / 26 COM DRIVER & CONTROLLER FOR STN LCD

80 COM / 26 COM DRIVER & CONTROLLER FOR STN LCD
S6A0092
LCD DRIVING POWER SUPPLY CIRCUIT
The Power Supply circuit produces LCD panel driving voltage at low power consumption. The LCD Driving Power
Supply circuit consists of Voltage converter, Voltage regulator, and Voltage follower. It is controlled by power control
instruction. Table 14 shows how the LCD Driving Power Supply circuit works by power control instruction sets.
Table 14. Power Supply Control Mode Set
Voltage Voltage
VC VR VF
Converter regulator
111
Enable
Enable
011
Disable
Enable
Voltage
follower
Enable
Enable
VOUT pin VR pin
Internal
voltage
output
External
voltage
input
Used for
voltage
adjustment
Used for
voltage
adjustment
001
Disable
Disable
Enable
Open
Open
000
Disable
Disable
Disable
Open
NOTE: Any other case which is not written in this table is prohibited.
Open
V0, V1, V2,
V3, V4 pin
Internal voltage output
Internal voltage output
V1∼V4: internal voltage
output
V0: external voltage input
V0∼V4: external voltage
input
33