19-0782; Rev 1; 6/08
LED Light Management IC in
2.5mm x 2.5mm UCSP
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 program-
mable 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 cur-
rent and maximum timer is programmable through I2C.
Each LED current is individually regulated to a program-
mable level (from off to 10mA in 32 steps) and is com-
pletely 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
The MAX8830 is available in a 16-bump UCSP™ pack-
age (2.5mm x 2.5mm).
Cell Phones and Smartphones
PDAs and MP3 Players
Typical Operating Circuit
2.7V TO 5.5V
3.8V TO 5.2V
UP TO 400mA*
*GUARANTEED OUTPUT CURRENT FOR EXTERNAL CIRCUITRY IS 400mA
MINUS THE SUM OF ALL LED CURRENTS.
♦ 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
♦ 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
+Denotes a lead-free package.
16 UCSP (2.5mm x 2.5mm)
Pin Configuration appears at the end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.