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
Part Number Battery Input Regulation Topology Max. No. of LEDs LED Channels LED Configuration ILED per Channel
(A)
Dimming Ratio Dimming Control POUT
(W)
VIN
(V)
VIN
(V)
ICC
(mA)
LED String Volt.
(V)
Oper. Freq.
(kHz)
max max min max max max
MAX8830  1-Cell Li+ Inductor Based 5 5 Parallel 0.2 32 I2C Serial 1.5 2.7 5.5 7.5 5.2 1000
See All LED Drivers (75)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Quality and Environmental Data

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

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