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The ISL24111 is a nine output channel high voltage TFT-LCD logic level shifter. The ISL24111 converts low power logic-level input timing signals, generated by the TFT-LCD timing controller (TCON), to high power level-shifted output signals used to drive a Gate-In-Panel (GIP) TFT-LCD. The high voltage level shifters can swing up to +60V, with peak output current of +460mA (source) and -730mA (sink).

The output channels are organized in two separate groups. Level shifter output channels OUT1 through OUT7 are powered from V_ON1 and V_OFF (positive and negative supply voltage rails, respectively), while OUT8 and OUT9 output channels are powered from V_ON2 and V_OFF. Each output features a low impedance output stage and achieves fast rise and fall times with minimal propagation delays. These features make the device ideal for driving highly capacitive loads in TFT-LCD applications.

The device features a gate shaping function that can be utilized to reduce overall LCD system power and improve image quality by reducing flicker. Outputs 1 through 6 can support gate shaping, while outputs 7 through 9 precisely track their respective input signal.

The ISL24111 is available in a thermally enhanced 24 Ld 4x4mm TQFN package. It is specified for operation over the -40°C to +85°C extended ambient temperature range.

Key Features

• 9-Channel Logic Level Shifter
• 60V Operating Range (VONx - VOFF)
• VON1 [OUT1-OUT7] and VON2 [OUT8, OUT9] Positive Power Supplies, VOFF Negative Supply
• Gate Shaping Function with FCLK Input for Control
• +460mA and -730mA Peak Output Current for [OUT1-OUT7]
• 50ns Propagation Delay (Typical Low to High)
• 300ns Rise, 200ns Fall Time for [OUT1-OUT7]
• 520ns Rise, 350ns Fall Time for [OUT8-OUT9]
• Pb-Free (RoHS Compliant)
• -40°C to +85°C Ambient Operating Range

Applications

• Logic Level Shifter
• TFT-LCD TV, Monitor, Notebook, and Tablet
  • Gate-In-Panel (GIP)
  • Gate-On-Array (GOA)
  • Amorphous Silicon Gate (ASG)