TPS65193 Datasheet, PDF (1/25 Pages) Texas Instruments – Dual High-Voltage Scan Driver for TFT-LCD

TPS65193
www.ti.com ....................................................................................................................................................................................................... SLVS964 – JULY 2009
Dual High-Voltage Scan Driver for TFT-LCD
FEATURES
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• Dual High-Voltage Scan Driver
• Scan Driver Output Charge Share
• High Output-Voltage Level: Up to 35 V
• Low Output-Voltage Level: Down to –28 V
• Logic-Level Inputs
• 24-Pin 4-mm × 4-mm QFN package
APPLICATIONS
• TFT LCD Using Amorphous Silicon Gate (ASG)
Technology
DESCRIPTION
The TPS65193 is dual high-voltage scan driver to drive an amorphous-silicon-gate (ASG) circuit on TFT glass.
Each single high-voltage scan driver receives logic-level inputs of CPVx and generates two high-voltage outputs
of CKVx and CKVBx. The device receives a logic-level input of STV and generates a high-voltage output of
STVP. These outputs are swings from Voff (–28 V) to Von (35 V) and are used to drive the ASG circuit and
charge/discharge the capacitive loads of the TFT LCD. In order to reduce the power dissipation of the device, a
charge-share function is implemented. The device features a discharge function, which shorts Voff to GND in
order to shut down the panel faster when the LCD is turned off.
R_BCS1
R_CS1
CKVB1 to ASG
STVP to ASG
CKVB2 to ASG
CKV2 to ASG
R_BCS2
R_CS2
1 _CKVB1
2 _STVP
3 _CKVB2
4 _CKVBCS2
5 _CKVCS2
6 _CKV2
VON _CVON
VOFF ¹⁸
NC ¹⁷
NC ¹⁶
DISH ¹⁵
AGND ¹⁴
NC ¹³
VOFF
C_VOFF
Vlogic
C_DISH
C_DLY
S0418-01
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2009, Texas Instruments Incorporated