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Product Features

  • Three Step-Down DC/DC Converters
  • Four Low-Dropout Linear Regulators
  • Integrated ActivePath™ Charger
  • I2C™ Serial Interface
  • Advanced Enable/Disable Sequencing
  • Minimal External Components
  • Tiny 5x5mm
  • TQFN55-40 Package
  • 0.75mm Package Height
  • Pb-Free and RoHS Compliant

The ACT8931A is a complete, cost effective, highlyefficient ActivePMUTM power management solution, optimized for the unique power, voltage sequencing, and control requirements of the Rockchip RK2928/RK2926 processors.

The ACT8931A features three step-down DC/DC converters and four low-noise, low-dropout linear regulators, along with a complete battery charging solution featuring the advanced ActivePathTMsystem-power selection function. The three DC/DC converters utilize a high efficiency, fixed-frequency (2MHz), current-mode PWM control architecture that requires a minimum number of external components. Two DC/DCs are capable of supplying up to 1100mA of output current, while the third supports up to 1200mA. All four low-dropout linear regulators are high performance, low-noise regulators that supply up to 320mA of output current.

The ACT8931A is available in a compact, Pb-Free and RoHS-compliant TQFN55-40 package.
 

Advantages of our Modular Power PMU

Features Benefits
Space Saving With fully integrated power stages with high switching frequency
of 2.25MHz (1.125Mhz) to reduce external component size
Integrated sequencing Easy system level design with programmable Reset and Power
Good functions allows for flexible sequencing options
Seamless sequencing With external supplies via integrated GPIOs and Power Good signals
Highly configurable Via a I2C uP interface for status reporting and controlling

  • Rockchip
    • RK2928
    • RK2926
  • Other PMU
  • Tablets
  • Pad Devices

  • EA8931A