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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

Product Details

Key Features

Simplified Block Diagram

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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

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).

Simplified Block Diagram

MAX8830: Typical Operating Circuit MAX8830: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.