General Description
The MAX8830 light management IC integrates a 400mA (guaranteed) PWM DC-DC step-up converter, a 320mA white LED camera flash current sink, and four programmable LED current sinks. The internal 1MHz step-up converter features an internal switching MOSFET and synchronous rectifier to improve efficiency and minimize external component count. The camera flash output current and maximum timer is programmable through I2C. Each LED current is individually regulated to a programmable level (from off to 10mA in 32 steps) and is completely independent of each other.

Features
♦ Step-Up DC-DC Converter
   400mA Guaranteed Output Current
   Over 90% Efficiency
   On-Chip FET and Synchronous Rectifier
   Fixed 1MHz PWM Switching
   Small 2.2µH to 10µH Inductor
   I2C-Programmable VOUT (3.8V to 5.2V and Off in
      16 Steps)
♦ Flash LED Current Sink
   I2C-Programmable Flash Output Current (Off to
      320mA in 32 Steps)
   I2C-Programmable Flash Maximum Timer (0.5s,
      1.0s, 1.5s, or 2.0s)
   I2C-Programmable Movie Output Current (Off to
      160mA in 16 Steps)
   Movie Enabled by I2C or Logic Input
   Flash Enabled by Logic Input
   Low Dropout (75mV typ)
♦ Four LED Current Sinks
   Individually I2C-Programmable Output Current
      Off to 10mA in 32 Steps
   Low LED Sink Current Dropout Voltage (30mV typ)
♦ I2C Interface
   Write Address (0x94), Read Address (0x95)
   Individual On/Off and LED Current Settings
   Simple Register Mapping
♦ < 1µA Shutdown Current
♦ Open/Short LED Detection
♦ Thermal-Shutdown Protection
♦ 16-Bump, 2.5mm x 2.5mm UCSP Package

Applications
   Cell Phones and Smartphones
   PDAs and MP3 Players