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Nanopower PMIC for low power connected devices


Smallest PMIC for the most efficient solution

DA9231 is an ultra-low quiescent current high efficiency buck regulator and an ultra-low quiescent current LDO in a compact I2C configurable WLCSP package targeting battery powered applications needing highly efficient power supplies.

The buck regulator extends high light-load efficiency down to 10 μA further extending battery life. Dynamic Voltage Control (DVC) in the buck regulator facilitates optimization across the system power modes enabling further improvement in system efficiency and battery life.

The low quiescent current LDO can be configured as a load switch and provides the second supply output. The LDO’s uncommitted inputs can be connected to either the battery or the buck output. Connecting the input to the buck output provides the flexibility to improve the PSRR at the LDO output as needed. It provides multiple protection features and comes with the ability to monitor the events and indicators in the GPO pin.

Lifecycle status

● Active


300 mA buck converter

  • 750 nA total input current (buck enabled no load, LDO disabled) 
  • Up to 81% efficiency at 1.8 V output, 10 μA load current
  • Input voltage 2.5 V to 5.5 V
  • Output voltage 0.6 V to 1.9 V
  • Dynamic Voltage Control (DVC) 

100 mA LDO/Load Switch

  • 1.35 uA total input current (buck and LDO enabled, no load)
  • Input voltage 1.8 V to 5.5 V
  • Output voltage 0.7 V to 3.3 V

I2C interface for device configuration and control 

Protection features and system monitors 


Longer battery life

Design flexibility through configurability

Small solution size

Future proofing for new technology MCUs with 0.6V min buck output voltage

Future proofing for new technology batteries with 2.5V min input voltage


Wearables – wrist wear, hearables, pet wearables

Smart devices - thermostats and door locks

Smoke detectors

Portable medical devices 

Remote sensors

High efficiency, low power applications 


12-pin WLCSP (1.65 x 1.25 mm)

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Product Briefs and Summaries
Name Date Version
DA9231 Product Brief (569.23 KB) 01/01/2017 1.0
Name Date Version
DA9231 datasheet (2.52 MB)
Application notes
Name Date Version
Shared IRQ Line Considerations AN-PM-059 (329.06 KB) 24/06/2016 1.2
Software Resources
Name Date Version
DA923x GUI (78.22 MB) (Registered users only) 05/09/2020 17
User guides and manuals
Name Date Version
UM-PM-039 Fuel Gauge Development Kit (2.15 MB) 28/10/2018 2.1
User Guide for DA9230/31 Evaluation Guide (1.16 MB)
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The smallest PMIC for the most efficient solution