LED DRVR 4Segment 1.8V/2.5V/3.3V 16-Pin UCSP T/R

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. An I²C interface controls individual on/off of all outputs, step-up output voltage setting, movie/flash current, flash timer duration settings, and individual LED current sink settings. The MAX8830 is available in a 16-bump UCSP package (2.5mm x 2.5mm).

• 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 V_OUT (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