MAX8930 WLED Charge Pump, RGB, OLED Boost, LDOs with ALC and CAI 0 pages

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MAX8930
WLED Charge Pump, RGB, OLED Boost,
LDOs with ALC and CAI
19-4921; Rev 0; 3/10
Typical Operating Circuit appears at end of data sheet.
General Description
The MAX8930 integrates a charge pump for white LED
display backlighting with ambient light control (ALC)
feature. The high-efficiency, adaptive-mode 1x/-0.5x
charge pump drives up to 11 LEDs (8 WLEDs + RGB
LED) with constant current for uniform brightness. The
LED current is adjustable from 0.1mA to 25.6mA in 256
linear steps through I2C. High accuracy and LED-to-LED
current matching are maintained throughout the adjustment
range. The MAX8930 includes soft-start, thermal
shutdown, open-circuit, and short-circuit protection.
Three 200mA LDOs are provided with programmable
output voltages to provide power to external circuitry.
These three LDOs can also be configured for a GPO
function through the I2C. A step-up converter is also
available on the MAX8930 for biasing a PMOLED subpanel.
The MAX8930 is available in the 49-bump, 3.17mm x
3.17mm WLP package.
Features
S White LED Charge Pump
S Adaptive 1x or -0.5x Negative Modes
S 11 Low-Dropout LED Current Sinks with 25.6mA
to 0.1mA in 256 Dimming Steps
S Ramp-Up/Down Control for Main White LED
S Ramp-Up/Down Control for RGB LED
S Individual Brightness Control for Each White,
RGB LED
S Low 240ìA (typ) Quiescent Current
S Ambient Light Control (ALC) for Any Type of Light
Sensor
S Content Adaptive Interface
S I2C-Compatible Control Interface
S Three Programmable LDOs Up to 200mA
S Step-Up DC-DC Converter with Programmable
Output for PMOLED Application
S Low 0.1ìA Shutdown Current
S 2.7V to 5.5V Supply Voltage Range
S Thermal Shutdown
S Open and Short-Circuit Protection
Applications
Cell Phones and Smartphones
PDAs, Digital Cameras, Camcorders, and Other
Portable Equipment
Ordering Information
+Denotes a lead(Pb)-free/RoHS-compliant package.
Simplified Application Circuit
PART TEMP RANGE PIN-PACKAGE
MAX8930EWJ+ -40NC to +85NC
49 WLP
0.4mm pitch
ìP
INPUT 1.7V TO 5.5V
INPUT 2.7V TO 5.5V
PV4
PV5
PV1
PV2
PV3
WLED1
INPUT
WLED2
WLED3
WLED4
WLED5
WLED6
WLED7
WLED8
SCL
SDA
EN
CAI
PLAYR
PLAYG
PLAYB
REFBP VDD FILT
SENSE
LIGHT
SENSOR
BIAS
RLED
GLED
BLED
CHG
LDO1 2.3V TO 3.1V, 200mA
2.3V TO 3.1V, 200mA
1.2V, 1.5V, 1.8V, 2.5V, 200mA
13V TO 16.5V
LDO2
LDO3
OUT
KEY
INPUT
MAX8930