t KTZ8866 For full datasheet, click HERE. High Efficiency 6-CH LED Backlight Driver with Dual LCD Bias Power Features Brief Description Backlight LED Driver KTZ8866 is the ideal power solution for LED backlighting and LCD bias power of medium size panels. It integrates a Wide input range: 2.7V~5.5V step-up converter for LED backlighting, a step-up converter High efficiency step-up LED driver with 6-Ch with LDO and inverting charge pump for LCD bias power, current sinks, up to 40V boost voltage. resulting in a simpler and smaller solution with fewer Up to 30mA/Ch in backlight mode external components. High switching frequency allows the 0.7% current matching at 20mA use of a smaller inductor and capacitor. Its input operating 2.2% current accuracy at 20mA range is from 2.7V to 5.5V, accommodating 1-cell lithium 2 I C/PWM dual dimming control scheme ion batteries or 5V supply. 2 High resolution I C 11-bit linear or exponential dimming The LED drivers six regulated current sinks can regulate Wide range PWM dimming up to 30mA with its maximum boost output voltage up to 100Hz to 100kHz frequency 40V. 11-bit linear or exponential I resolution can be LED 2 0.2% to 100% duty cycle at 20kHz obtained over I C or PWM dimming. For additional flexibility, PWM dimming offers wide range frequency and Programmable current sink turn on/off ramp duty cycle to support Content Adaptive Brightness Control time/shape and transition ramp up/down time (CABC). 1.0MHz typical boost switching frequency Programmable input PWM hysteresis to The LCD bias power section includes a step-up converter, minimize jitter at low PWM duty cycle LDO and an inverting charge pump to generate dual Programmable OVP and current limitation outputs, OUTP and OUTN, whose voltages can be 2 LED open/short protection programmed via an I C interface. By integrating LCD Panel Bias synchronous rectification MOSFETs for the step-up Wide input range: 2.7V~5.5V converter and charge pump, the KTZ8866 maximizes Programmable dual output Bias regulator using conversion efficiency up to 85%. a single inductor Various protection features are built into KTZ8866, Programmable ramp time for OUTP and OUTN including inductor current limit protection, output short Charge pump PFM mode at light load circuit protection, output over-voltage protection, LED fault LCD Bias efficiency: up to 85% (open or short) protection and thermal shutdown Wide dual output voltage range 4.0V to 6.3V protection. (50mV/step) and output current up to 200mA at 2 KTZ8866 is equipped with I C interface for various controls V 2.9 V IN and status monitor. Active output discharge function Current limitation and short protection KTZ8866 is available in a RoHS and Green compliant 28- Others ball 1.73mm x 2.92mm x 0.62mm WLCSP package. System level input UVLO Thermal shutdown protection Low shutdown current <1A 2 Flexible I C interface Pb-free Packages: WLCSP-28 RoHS and Green Compliant -40C to +85C Temperature Range Applications Tablet Backlight and Bias August 2021 - Revision 04a Page 1 Company Confidential t KTZ8866 Typical Application Ordering Information Operating 1 Part Number Marking Package Temperature KTZ8866EKAA-TR PRXXYYZZZZ -40C to +85C WLCSP-28 1. PR = Device ID Code, XX = Date Code, YY = Assembly Code, ZZZZ = Serial Number. Kinetic Technologies cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Kinetic Technologies product. No intellectual property or circuit patent licenses are implied. Kinetic Technologies reserves the right to change the circuitry and specifications without notice at any time. August 2021 - Revision 04a Page 2 Company Confidential