Kinetic Technologies Announces KTZ8868 New 80-LED Backlight Driver and LCD Bias Power for up to 12” Display Panels

PublishTime： 2024-01-12 Article Source：Kinetic Technologies News

KTZ8868 80-LED Backlight Driver: Delivers big performance in a tiny package by integrating an 8-Channel 40V Backlight with LCD Bias in a protection-rich solution

San Jose, Calif. – January 9, 2024 – Power management and video/audio interface leader, Kinetic Technologies, is expanding its display power solutions portfolio with the introduction of KTZ8868. This device is a highly efficient 8-channel LED backlight driver with current sinks, up to a 40V boost voltage, while its 250mA bias output current can drive high resolution and high refresh-rated LCDs.

The high switching frequency of the KTZ8868 allows the use of a smaller inductor and capacitor, resulting in a simpler and smaller solution with fewer external components. The input operating range is from 2.7V to 5.5V, accommodating 1-cell lithium-ion batteries or a 5V supply.

Vice President of Marketing at Kinetic Technologies, Jeff Gray, stated, “With design engineers looking for ways to reduce footprint space for their next-generation tablets, POS terminals, and other mid-sized displays, our leading-edge KTZ8868 driver provides a worry-free solution that integrates what is used to be three ICs into one small chip. This device is like no other on the market, powering 80 LEDs with its protection-rich, robust features wrapped in a tiny package.”

These built-in protection features of the KTZ8868 include inductor current limit protection, output short circuit protection, output over-voltage protection, LED fault (open or short) protection, and thermal shutdown protection.

The very small KTZ8868 is available in a RoHS and green compliant WQFN55-32L (5mm x 5mm, 32 Lead) package that integrates an 8-channel backlight driver and 250mA LCD bias into one chip.

Product Features Include:

Backlight LED Driver

Wide input range: 2.7V to 5.5V

High-efficiency step-up LED driver with 8-Ch current sinks, up to 40V boost voltage

Up to 30mA/Ch in backlight mode

±0.7% current matching at 20mA

±2.2% current accuracy at 20mA

I²C/PWM dual dimming control scheme

100Hz to 100kHz frequency range

0.2% to 100% duty cycle at 20kHz

High-resolution I²C 11-bit linear or exponential dimming

Wide-range PWM dimming

Programmable current sink turn on/off ramp time/shape and transition ramp up/down time

1.0MHz typical boost switching frequency

Programmable input PWM hysteresis to minimize jitter at low PWM duty cycle

Programmable OVP and current limitation

LED open/short protection

LCD Panel Bias

Wide input range: 2.7V to 5.5V

Programmable dual output Bias regulator using a single inductor

Programmable ramp time for OUTP and OUTN

Charge pump PFM mode at light load

LCD Bias efficiency: up to 85%

Wide dual output voltage range ±4.0V to ±6.3V (50mV/step) & output current up to 250mA at V_IN ≥ 2.9V

Active output discharge function

Current limitations and short protection

Other Features

System level input UVLO

Thermal shutdown protection

Low shutdown current <1μA

Flexible I²C interface

Pb-free package: WQFN55-32L (5mm x 5mm, 32 Lead)

RoHS and green-compliant

-40℃ to +85℃ temperature range

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