KTZ8866

Features

Backlight LED Driver

• Wide input range: 2.7V~5.5V
• High efficiency step-up LED driver with 6-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
    • 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~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) and output current up to 200mA at V_IN ≥ 2.9 V
• Active output discharge function
• Current limitation and short protection

Others

• System level input UVLO
• Thermal shutdown protection
• Low shutdown current <1μA
• Flexible I²C interface
• Pb-free Packages: WLCSP-28
• RoHS and Green Compliant
• -40°C to +85°C Temperature Range

• Tablet Backlight and Bias

VIN (Min)	VIN (Max)	Number of LEDs/Channel	Channels	Control Type	Package
2.7V	5.5V	10	6	I2C	WLCSP47-28