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TPS65191RHBR
7-Channel Level Shifter for LCD Displays聽(Triple Channel Scan Driver)
CKVB2
CKV3
CKVCS3
CKVBCS3
VOFF
DISH
DLY
VON
CKVB2 to ASG
RCS2
RBCS1 RCS1
RCS3
RBCS3
VON
VOFF
Vlogic
CDISHVON
CVOFF
CKVCS2
CKV2
CKVB1
CKVBCS1
CKV1
CKVCS1
GND
STV CPV1 CPV2NC NC
CPV2 from
-CON
CPV1 from
-CON
STV from
-CON 31 30 29 28 2627 2510 14
CKV2 to
ASG
CKVB1 to
ASG
CKV1 to
ASG
CKVBCS2
RBCS2
GND CPV3
CPV3 from
-CON 16
TPS65191
www.ti.com SLVS963A –JULY 2009–REVISED AUGUST 2010
Triple High-Voltage Scan Driver for TFT-LCD
Checkfor Samples: TPS65191
1FEATURES • 32-pin 5-mm× 5-mm QFN Package Triple High-Voltage Scan Driver APPLICATIONS• Scan Driver Output Charge Share • TFT LCD Using ASG (Amorphous Silicon Gate)• High Output-Voltage Level: Upto35V Technology• Low Output-Voltage Level: Downto –28V Logic-Level Inputs
DESCRIPTIONThe TPS65191isa triple high-voltage scan driverto drivean ASG (amorphous silicon gate) circuiton TFT glass.
Each single high-voltage scan driver receives logic-level inputsof CPVx and generates two high-voltage outputs CKVx, CKVBx. The device receivesa logic-level inputof STV and generatesa high-voltage outputof STVP.
These outputs are swings from Voff (–28 V)to Von (35 V) and are usedto drive the ASG circuit and
charge/discharge the capacitive loadsof the TFT LCD.In orderto reduce the power dissipationof device,a
charge-share functionis implemented. The device features discharge function, which shorts Voffto GNDin order shut down the panel faster when the LCDis turned off.
