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The ISL97649B is an integrated power management IC (PMIC) for TFT-LCDs used in notebooks, tablet PCs, and monitors. The device integrates a boost converter for generating AVDD. VON and VOFF are generated by a charge pump driven by the switching node of the boost. The ISL97649B also includes a VON slice circuit, reset function, and a high performance VCOM amplifier with DCP (Digitally Controlled Potentiometer) that is used as a VCOM calibrator. The AVDD boost converter features a 1. 5A /0. 18Ω boost FET with 600/1200kHz switching frequency. The gate pulse modulator can control gate voltage up to 30V, and both the rate and slew delay time are selectable. The supply monitor generates a reset signal when the system is powered down. The ISL97649B provides a programmable VCOM with I2C interface. One VCOM amplifier is also integrated in the chip. The output of VCOM is power-up with voltage at the last programmed 8-bit EEPROM setting.


  • 2.5V to 5.5V input
  • 1.5A, 0.18Ω integrated boost FET
  • VON /VOFF supplies generated by charge pumps driven by boost switch node
  • 600/1200kHz selectable switching frequency
  • Integrated gate pulse modulator
  • Reset signal generated by supply monitor
  • Integrated VCOM amplifier
  • DCP
  • I2C serial interface, address:100111, msb left
  • Wiper position stored in 8-bit nonvolatile memory and recalled on power-up
  • Endurance, 1,000 data changes per bit
  • UVLO, UVP, OVP, OCP, and OTP protection
  • Pb-free (RoHS compliant)
  • 28 Ld 4x5 QFN




  • LCD notebook, tablet, and monitor


Type Title Date
Datasheet PDF 1.31 MB
End Of Life Notice PDF 200 KB
Product Change Notice PDF 183 KB
Product Change Notice PDF 173 KB
Manual - Development Tools PDF 860 KB
5 items

Design & Development

Software & Tools

Software Downloads

Type Title Date
Library EXE 509 KB
1 item