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

Negative Charge Pump Delivers High Efficiency, OLED Boost and LDO Save Space, and ALC, CAI, and I²C Add Flexibility

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.

Key Features
  • White LED Charge Pump
  • Adaptive 1x or -0.5x Negative Modes
  • 11 Low-Dropout LED Current Sinks with 25.6mA to 0.1mA in 256 Dimming Steps
  • Ramp-Up/Down Control for Main White LED
  • Ramp-Up/Down Control for RGB LED
  • Individual Brightness Control for Each White, RGB LED
  • Low 240µA (typ) Quiescent Current
  • Ambient Light Control (ALC) for Any Types of Light Sensor
  • Content Adaptive Interface
  • I²C-Compatible Control Interface
  • Three Programmable LDOs Up to 200mA
  • Step-Up DC/DC Converter with Programmable Output for PMOLED Application
  • Low 0.1µA Shutdown Current
  • 2.7V to 5.5V Supply Voltage Range
  • Thermal Shutdown
  • Open and Short-Circuit Protection
MAX8930: Typical Operating Circuit
MAX8930: Typical Operating Circuit
  • Cell Phones and Smartphones
  • PDAs, Digital Cameras, Camcorders, and Other Portable Equipment
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MAX8930 Data SheetMAX8930.pdf
Part NumberBattery InputRegulation TopologyMax. No. of LEDsLED ChannelsLED ConfigurationILED per Channel
PWM Dimming Freq.
Dimming ControlPOUT
LED String Volt.
Oper. Freq.
MAX89301-Cell Li+Charge Pump
1212Parallel0.02515I2C Serial
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX8930EVKIT+ActiveEVKIT;-40°C to +85°CSee data sheet
MAX8930EWJ+ActiveWLP,;49 pin;WLP;-40°C to +85°CLead Free
MAX8930EWJ+TNo Longer AvailableWLP,;49 pin;WLP;-40°C to +85°CLead Free
MAX8930.pdf MAX8930
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MAX8930.pdf MAX8930