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Kinetic Technologies
2024/02/19
Kinetic Technologies Announces New 80-LED Backlight Driver and LCD Bias Power for up to 12” Display Panels
KTZ8868: Delivers big performance in a tiny package by integrating an 8-Channel 40V Backlight with LCD Bias in a protection-rich solution
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 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
- High resolution I2C 11-bit linear or exponential dimming
- Wide range PWM dimming
- 100Hz to 100kHz frequency range
- 0.2% to 100% duty cycle at 20kHz
- 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 VIN ≥ 2.9V
- Active output discharge function
- Current limitation 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°C to +85°C temperature range
Source: Kinetic
