MAX8830

LED Light Management IC in 2.5mm x 2.5mm UCSP

White LED and Flash LED management in a small 2.5mm x 2.5mm package


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.

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).
MAX8830: Typical Operating Circuit MAX8830: Typical Operating Circuit Enlarge+

Key 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/Uses

  • Cell Phones and Smartphones
  • PDAs and MP3 Players

Quality and Environmental Data

Request Reliability Report for: MAX8830 
Lead-Free Package Tin (Sn) Whisker Reports

Related Resources