ISL24111
9‐Channel High Voltage TFT‐LCD Logic
Level Shifter with Gate Shaping Function
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
Description
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 VON1 and VOFF (positive and negative supply voltage
rails, respectively), while OUT8 and OUT9 output channels are powered from VON2 and VOFF.
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
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.
Applications
Logic Level Shifter
TFT‐LCD TV, Monitor, Notebook, and Tablet
Gate‐In‐Panel (GIP)
Gate‐On‐Array (GOA)
Amorphous Silicon Gate (ASG)
Parameters
# of Devices/ Channels
VOUT (min) (V)
ISL24111
VOUT (max) (V)
Continuous Output Current
Peak Output Current IPK
60
10 mA
25 A
300 ns
200 ns
50 ns
5000 pF
4.5 mA
‐40 to +85
Rise Time
Fall Time
Propagation Delay
Capacitive Load Driving
IS
Operating Temp Range (°C)
9
‐54
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