Configurable, High-Efficiency Buck Regulator for GPS Sub-Systems in Wearable Devices Requiring Ultra-Low Voltage Ripple
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Overview
Description
The DA9232 is a high-efficiency, ultra-low quiescent current and ultra-low output ripple buck regulator in a compact I2C configurable WLCSP package targeting battery-powered applications needing low ripple and highly efficient power supplies.
The battery life of these devices is significantly improved due to the low quiescent current delivered by DA9232 during operation and shutdown. Dynamic voltage control (DVC) in the buck regulator facilitates optimization across the system power modes enabling further improvement in system efficiency and battery life.
Benefits
- <10mV output ripple exceeds requirements for powering GPS chipsets in wearable devices
- Low quiescent current buck regulator extends battery life
- Dynamically programmable output voltage optimizes performance in operating modes and extends battery life in storage modes
Features
- 2.5V to 5.5V operating range
- 750nA total input current (buck enabled, no load)
- Up to 81% efficiency at 1.8V output, 10μA load currents
- Output voltage 0.6V to 1.9V
- Dynamic voltage control (DVC)
- I2C interface for device configuration and control
- Protection features and system monitors
- Package: WLCSP 12 (1.65mm x 1.25mm x 0.5mm)
Comparison
Applications
Applications
- Fitness trackers
- Smartwatches
- Wireless headphones
- Portable medical
- Personal health monitors
- Portable gaming
- Wireless earbud cradles
- Home automation
Documentation
= Featured Documentation
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| Type | Title | Date |
| Datasheet | PDF 1.25 MB | |
| Brochure | PDF 8.73 MB | |
| Application Note | PDF 267 KB | |
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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 |
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