1 Features
1• 3-V to 6-V Input Voltage Range
• Boost Converter With 4-A Switch Current Limit
• Boost Converter Output Voltages up to 18 V
• Boost Converter Overvoltage Protection
• Selectable Switching Frequency (640 kHz or 1.2
MHz)
• Programmable Boost Converter Soft-Start
• Temperature-Compensated Positive Charge
Pump Controller
• Negative Charge Pump Controller
• 4 + 2 Channels of Level Shifters
• XAO Reset Signal
• Thermal Shutdown
• 40-Pin 5×5 mm QFN Package

2 Applications
• LCD Monitors or Notebook Panels

3 Description
The TPS65155 provides an integrated bias and level
shifter solution for LCD monitors .
The device integrates a boost converter to generate
the source driver supply voltage (VAVDD), positive and
negative charge pump controllers to generate gate
driver ON (VGH) and OFF (VGL) voltages, and an 6-
channel level shifter in a single IC. The positive
charge pump controller supports temperature
compensation to reduce VGH at high temperatures.
In addition to the above functions, the TPS65155
generates an additional active-low XAO reset output.
Supply sequencing during power-up can be controlled
by an externally generated enable signal.
To request a full data sheet or other design
resources: request TPS65155