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AS3722 Power Management Unit

4 buck DC-DC, 24A DC-DC controller, 12 LDOs, general purpose ADC


  • 4 DC-DC step-down regulators (3-4MHz)
  • 3 DC-DC step-down controller with automatic phase shedding
  • 11 universal LDOs (one with DC-DC tracking feature)
  • Low power real time clock (<1uA)
  • Programmable stand-by sequence


  • Compact design due to small coils for IO and memory voltage generation
  • High current generation with external power stages to minimize PMIC power dissipation
  • Multiple independent voltage rails for general purpose IO supplies

Product parameters

DC-DC Step Up Converters
DC-DC Step Down Converters 8-phase + 2-phase + 2-phase + 4A +2A + 2x1.5A
Special LDOs [mA]
Universal LDOs [mA] 12x300
Current Sinks [mA]
Charge Pump [V/mA]
Audio DAC [dB SNR]
Audio ADC [dB SNR]
Audio Features
General Purpose ADC [bit] 10, 12-channel
Customizable Startup Sequences Programmable
Package BGA-124 (8x8mm)

General Description

The programmable power management unit AS3722 features 4x DC-DC buck converters, 3x buck converter (6A to 24A) and 11 low noise LDOs. The high level of integration and the 4MHz switching frequencies ensure small system footprint.

This product suits for the following applications:

  • Tablet PCs
  • Netbooks
  • Portable media players
  • Solid state disk drives
  • Embedded systems


Title Category Headline Buy
AS3722/28EvalKit Application Board Evaluation Kit for AS3722/28


Name Type Description Language Software Eval SW 1-1-0-0 English

Technical Documents

Name Type Description Version Language
AS3722_BD000371_1-00.png Block Diagram AS3722 Block Diagram 1-00 English
AS3722_DS000358_1-00.pdf Datasheet Document version 1-01 1-00 English
AS3722_28_PD000297_1-00.png Other Product Document AS3722/28EvalKit Image 1-00 English
AS3722_UG000258_1-00.pdf User Guide Standard board EK 1-00 English

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