KTZ8850

Features

• Wide input range: 3.0V~5.5V
• High efficiency step-up LED driver with dual output regulator for LCD bias power
• Drive up to 10 series LEDs or 2 parallel strings of 8 series LEDs
• Backlight efficiency: up to 86%
• Highly integrated 40V Power MOSFET
• Flexible dimming control
  • 256-step I²C Controlled or
  • High resolution PWM from 5kHz to 100kHz
• High accuracy across full load range
• Programmable LED open-circuit (OVP)/Short protection
• Low 200mV feedback voltage
• 1MHz High switching frequency
• Internal over voltage protection (default 36V)
• Programmable dual Bias output regulator based on single inductor solution
• Charge pump PFM mode at light load
• LCD Bias efficiency up to 90%
• Wide dual output voltage range: +/-4.0V to +/-6.3V (100mV/step)
• Typ. 2% output voltage accuracy
• Maximum peak output current up to 80mA
• Active output discharge function
• Low quiescent current
• Cycle-by-cycle inductor current limit
• 1 µA shutdown current
• Pb-free Packages: WLCSP-18
• -40°C to +85°C Temperature Range

• Smartphone
• Tablet Backlight
• Netbook/Notebook Backlight
• PDA/GPS Backlight; Portable Media Player