DATASHEET
ISL78419 FN8292
Rev 3.00
June 27, 2014 Integrated Automotive TFT-LCD Power Supply Regulator Features The ISL78419 is an integrated power management IC (PMIC) for
TFT-LCDs used in central display, rear seat entertainment and
virtual dashboards. The device integrates a boost converter for
generating AVDD, an LDO regulator for VLOGIC. VON and VOFF are
generated by a charge pump driven by the switch node of the
boost converter. The ISL78419 also includes a VON slice circuit,
reset function, and a high performance VCOM amplifier with a
Digitally Controlled Potentiometer (DCP) that is used as a VCOM
calibrator. 2.5V to 5.5V input 1.5A, 0.18О© integrated boost FET VON/VOFF supplies generated by charge pumps driven by the
boost switch node LDO for VLOGIC channel 600kHz/1200kHz selectable switching frequency The AVDD boost converter features a 1.5A/0.18О©пЂ boost FET with
600kHz/1200kHz switching frequency. Integrated gate pulse modulator The integrated logic LDO includes a 350mA FET for driving the low
voltage needed by external digital circuitry. Integrated VCOM amplifier Reset signal generated by supply monitor DCP
-I2C serial interface, address: 0101000, MSB left
-Wiper position stored in 8-bit nonvolatile memory and
recalled on power-up
-Endurance, 1,000 data changes per bit The gate pulse modulator can control the gate voltage up to 30V,
and both the rate and slew delay times are selectable.
The supply monitor generates a reset signal when the system is
powered down based on a user selected threshold level
(programming resistor). UVLO, UVP, OVP, OCP, and OTP protection The ISL78419 provides a digitally controlled VCOM output using …
