TPS65193
www.ti.com SLVS964A – JULY 2009 – REVISED JULY 2010 Dual High-Voltage Scan Driver for TFT-LCD
Check for Samples: TPS65193 FEATURES 1 APPLICATIONS 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 Г— 4-mm QFN package TFT LCD Using Amorphous Silicon Gate (ASG)
Technology DESCRIPTION CKV1 to ASG 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. RBCS1 19 VON 20 NC 21 AGND 22 CKV1 23 DISH CKVCS2 AGND 17 CVOFF Vlogic 16
15 CDISH 14
13 12 STV from T-CON 7 18 DLY NC EN CKV2 11 6 CKVBCS2 STV CKV2 to ASG NC EN 5 RCS2 CKVB2 NC 4 10 RBCS2 NC CPV2 3 STVP CPV2 from T-CON 9 CKVB2 to ASG VOFF CPV1 2 VOFF CKVB1 CPV1 from T-CON 8 STVP to ASG CKVCS1 24
1 CVON RCS1 CKVBCS1 CKVB1 to ASG VON CDLY S0418-01 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
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 В© 2009–2010, Texas Instruments Incorporated TPS65193 …
