Features
- 300mA buck converter
- 750nA total input current (buck enabled no load, LDO disabled)
- Up to 81% efficiency at 1.8V output, 10μA load current
- Input voltage 2.5V to 5.5V
- Output voltage 0.6V to 1.9V
- Dynamic Voltage Control (DVC)
- 100mA LDO/load switch
- 1.35μA total input current (buck and LDO enabled, no load)
- Input voltage 1.8V to 5.5V
- Output voltage 0.7V to 3.3V
- I2C interface for device configuration and control
- Protection features and system monitors
- Package: 12-pin WLCSP (1.65mm x 1.25mm)
Description
The 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 10μA 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.
Benefits
- 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
Parameters
| Attributes | Value |
|---|---|
| Qualification Level | Standard |
| Total step-down DC/DC converter channels (#) | 1 |
| Step-up DC/DC converter Channels (#) | 0 |
| Input Voltage (Min) (V) | 2.5 |
| Input Voltage (Max) (V) | 5.5 |
| Bus Voltage (Max) (V) | 5.5 |
| Output Current Max (A) | 0.3 |
| Outputs (#) | 2 |
| Function | 2-ch PMIC |
| Battery Interface | No |
| GPIOs (#) | 1 |
| Integrated Battery Charger | No |
| Switching Frequency (MHz) | 3 - 3 |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| WLCSP | 1.65 mm x 1.25 mm, 12-pin WLCSP | 12 | 0.4 |
Applications
- Wearables – Wristwear, hearables, pet wearables
- Smart devices - Thermostats and door locks
- Smoke detectors
- Portable medical devices
- Remote sensors
- High efficiency, low power applications
Support Communities
-
DA9231 more information
Helo, Where can I found more technical information about DA9231? https://www.dialog-semiconductor.com/sites/default/files/da9231_product… is very general. Thanks
Jun 20, 2018 -
DA9230 and DA9231, Dialog Semiconductor’s First Nanopower PMICs
Dialog Semiconductor’s first nanopower PMICs extend battery life for always-on connected applications. The ultra-compact DA9230 and DA9231 nanopower PMICs provide high efficiency and flexibility for wearables, smart door locks, portable medical devices and more. Click here for more information
Dec 13, 2017 -
Battery Management System for the entire circuit
Hi, I was looking at DA14695 for my wearable application and came across the integrated power management system. I want to know if this can be used as a battery management system for the entire circuit, meaning, can I use the power rails to power my other sensors (running at ...
Dec 6, 2019
Support Communities
