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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.

Not Recommended for New Designs
ams AG is discontinuing production of this device. Final lifetime buy order must be placed by June 30, 2021. Please contact your local sales representative for further information.

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

Technical Documents

Type Description Language
Datasheet Document version 1-01 English
Other Product Document OTP specification -08 English
Other Product Document OTP specification -09 English
Other Product Document OTP specification -10 English
Other Product Document OTP specification -11 English
Other Product Document OTP specification -13 English

Environmental Documents

Type Description Language
Material Declaration Form MDF_193600023_AS3722-BCTT-13 English
Material Declaration Form MDF_193600019_AS3722-BCTT-11 English
Material Declaration Form MDF_193600013_AS3722-BCTT-10 English
Material Declaration Form MDF_193600009_AS3722-BCTT-00 English
Material Declaration Form MDF_193600006_AS3722-BCTT-09 English
Material Declaration Form MDF_193600003_AS3722-BCTT-08 English
RoHS Certificate RoHS Certificate_AS3722 English


Type Description Language
EoL Notification AS1xxx, AS25xx, AS3xxx, AS73211, AS89020, SL900A, TMD4704 (issued 2020-Dec) English

Other Information

Type Description Language
Block Diagram AS3722 Block Diagram English
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