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DA9121

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Configurable, 10A Dual-Phase Sub-PMIC for High-Performance Mobile Processors and Memory

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DA9121 Datasheet

Overview

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
DA9121 Block Diagram
DA9121 Block Diagram
  • 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)

Documentation

Featured Documentation
Type Title Date
Datasheet
DA9121 Datasheet
PDF 1.36 MB
Application Note
AN-PM-140: DA9217/DA9220/DA9121/DA9122 - Adjusting VOUT above 1.9 V
PDF 460 KB
Manual - Development Tools
UM-PM-041 DA9217/DA9121 and DA9220/DA9122 EVB Kits
PDF 1.21 MB
Product Brief
DA9121 / DA9122 Product Brief
PDF 782 KB
4 items

Design & Development

Software Downloads
Type Title Date
Software & Tools - Software
SmartCanvas GUI for DA9217/DA9220/DA9121/DA9122
Log in to Download ZIP 85.25 MB
Software & Tools - Other
DA9130-A ,DA9131-A, DA9121, DA9217, DA9122, DA9220 Linux Driver
Log in to Download ZIP 438 KB
2 items
IEEE 1588 Solution Reference Design Board

CN268-IEEE1588POCZ

Development
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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...

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IEEE 1588 Solution User's Manual
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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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