Overview
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
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)
Comparison
Applications
- Wearables – Wristwear, hearables, pet wearables
- Smart devices - Thermostats and door locks
- Smoke detectors
- Portable medical devices
- Remote sensors
- High efficiency, low power applications
Documentation
Featured Documentation
Log in required to subscribe
|
|
|
|
|---|---|---|
| Type | Title | Date |
| Datasheet | PDF 2.17 MB | |
| Application Note | PDF 267 KB | |
| Manual - Development Tools | PDF 2.94 MB | |
| Manual - Development Tools | PDF 1.23 MB | |
| Product Brief | PDF 129 KB | |
5 items
|
||
Design & Development
Software & Tools
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Processing table
| 12-WLCSP | Tape & Reel | 1 | |||
| 12-WLCSP | Tape & Reel | 1 | |||
| 12-WLCSP | Tape & Reel | 1 | |||
| 12-WLCSP | Tape & Reel | 1 |
Tips for Using This Parametric Table:
- Hide Filters button in header: Collapse or expands filters
- Column sort buttons in header: Sort Column alphabetically / numerically descending or ascending
- Reset button in header: Reset all filters to the page default
- Full Screen button in header: Expand the table to full screen view (user must close out of full screen before they can interact with rest of page)
- Export button in header: Export the filtered results of the table to an Excel document
- Filter parts search bar in header: Type to filter table results by part number
- Hide column button in column headers: Select to hide columns in table
- AND / OR toggle switches in header: Toggles the logic of this particular filter to be “AND” or “OR” logic for filtering results
- Multiselect checkboxes at beginning of each row in table: Select these checkboxes to compare products against each other
- Document icon next to product name in row: View the featured document for this product
- Chip icon next to the right of the document icon in row: View the block diagram for this product
- Cart icon to the right of the chip icon: Indicates that samples are available for this product