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LCD Bias Supply ICs

LCD Bias Supply ICs are multi-channel voltage converter ICs used to power the positive and negative bias supplies needed by LCD TFT panels.  Discrete LCD Bias Supplies are used in Smartphones and Tablets with Full HD (FHD) or higher resolution panels. Utilizing a single boost converter and charge-pump technology, they provide multiple outputs with a single inductor; these products provide an extremely small and highly efficient programmable solution. 

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Featured Products for LCD Bias Supplies

Part Number Description
KTD2150 2-Channel LCD Panel Bias Supply with Single Inductor
KTD2151 2-Channel LCD Panel Bias Supply with Single Inductor

Application Notes

Document Description PDF File

+ Search Parameters


  • 2.7


  • 5.5

LED Channels

Brightness Control

Switching Frequency(MHz)

Safty Timer Max(ms)

Max. Current per Channel (mA)

Total Max LED Current(mA)


  • WLCSP-15 2.2x1.45-15


Number of LEDs/Channel

Total Number of LEDs


  • I2C
  • Resistor programmable

Max. Current per Channel(mA)

  • 80


  • 4.0~6.3V, -4.0~-6.3V, 100mV-steps
  • 4.8~5.5V, -4.8~-5.5V, 100mV-steps


  • 1.50%
  • 1.00%

IQ shutdown(SDA=SCL=1.8V)(µA)

  • 6uA
  • 100nA
  • 1uA

Output OVP

Output Auto-Discharge


ON Resistance (mΩ)

Max Current (A)

OVP Trip Point (V)

Max Output Power (W)

PoE PD Support

HW Mode Control

SW Mode I2C Control


Number of Output Rails

High Voltage Isolation

CISPR22 and FCC Part 15

IEC 61000-4-3 requirements for Radiated and Conducted Immunity

IEC 61000-4-2 ESD (Air Discharge)

IEC 61000-4-2 ESD (Contact Discharge)

Cable Discharge Event (CDE)

Package Alt.

Package Alt. 1

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