Top

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

Product Details

Key Features

Simplified Block Diagram

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.

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

Applications/Uses

  • Cell Phones and Smartphones
  • PDAs, Digital Cameras, Camcorders, and Other Portable Equipment

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.

Simplified Block Diagram

MAX8930: Typical Operating Circuit MAX8930: 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.