GENERAL DESCRIPTION
The ADD5203 is a white LED driver for backlight applications based on high efficiency, current-mode, step-up converter technology. It is designed with a 0.15 Ω, 2.9 A internal switch and a pin-adjustable operating frequency between 350 kHz and 1 MHz.

FEATURES
   White LED driver based on inductive boost converter
      Integrated 50 V MOSFET with 2.9 A peak current limit
      Input voltage range: 6 V to 21 V
      Maximum output adjustable up to 45 V
      350 kHz to 1 MHz adjustable operating frequency
      Overvoltage protection (OVP) up to typical 47.5 V
      Built-in soft start for boost converter
   Drives up to eight LED current strings
      LED current adjustable up to 30 mA for each channel
      Headroom control to maximize efficiency
      Adjustable dimming frequency: 200 Hz to 10 kHz
      LED open and short fault protection
   Selectable dimming control interface methods
      PWM input
      SMBus serial input
   Selectable dimming modes
      Fixed delay PWM dimming control with 8-bit resolution
      No delay PWM dimming control with 8-bit resolution
      Direct PWM dimming control
      DC current dimming control with 8-bit resolution
   General
      Thermal shutdown
      Undervoltage lockout
      28-lead, 4 mm × 4 mm × 0.75 mm LFCSP_WQ
 
APPLICATIONS
   Notebook PCs, UMPCs, and monitor displays