Overview
Description
The DA9121 is a sub-PMIC suitable for supplying CPUs, GPUs, and DDR memory rails in smartphones, tablets, RF modules, and other handheld applications.
DA9121 operates as a single-channel dual-phase buck converter, each phase requiring a small external 0.10μH inductor. It is capable of delivering up to 10A of output current at a 0.3V to 1.9V output voltage range. The 2.5V to 5.5V input voltage range is suitable for a wide variety of low-voltage systems, including, but not limited to, all Li-ion battery-supplied applications.
Benefits
- Input voltage range provides flexibility to run from single-cell Li-ion battery or standard 3.3V or 5V system rail
- Differential voltage sensing provides tight regulation accuracy requirements of CPU cores in mobile SoCs
- 4MHz switching frequency reduces the footprint and height of the output inductor and minimizes output capacitance, lowering BOM cost
- Triggered through either an I²C or GPIO interface, output dynamic voltage control can be used to optimize system power consumption
Features
- 2.5V to 5.5V input voltage
- 0.3V to 1.9V output voltage
- 4MHz nominal switching frequency
- ±1% accuracy (static)
- ±5% accuracy (dynamic)
- I²C-compatible interface (FM+)
- Configurable GPIOs
- Programmable soft-start
- Voltage, current, and temperature supervision
- -40 °C to +85 °C ambient temperature range
- Package: 24-WLCSP (2.5mm x 1.7mm, 0.4mm pitch)
Comparison
Applications
Documentation
Featured Documentation
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| Type | Title | Date |
| Datasheet | PDF 1.36 MB | |
| Application Note | PDF 460 KB | |
| Manual - Development Tools | PDF 1.21 MB | |
| Product Brief | PDF 782 KB | |
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Design & Development
Software & Tools
Boards & Kits
Development
CN268-IEEE1588POCZ
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IEEE 1588 Solution Development Kit
This IEEE 1588 Solution development kit demonstrates clock synchronization up to <50nSec between Master and Slave to reconstruct accurate synchronization signals for 5G networks.
IEEE 1588 is a precise time protocol (PTP) system used to synchronize clocks in computer networks. In local area...
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Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.
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