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AS3729 Power Management Unit

6A dual-phase power stage (2 x 3A)


  • 2 phases with separate control input
  • Separate power NMOS and PMOS for 3A per phase
  • Stand-alone zero-crossing operation
  • Integrated temperature monitoring
  • WL-CSP16: 1.615mm x 1.615mm, 0.4mm pitch


  • Support for single or dual-phase operation
  • 2 x 3A output stages are running on 3MHz
  • Overtemperature protection
  • Cost effective, small package

Product parameters

DC-DC Step Up Converters
DC-DC Step Down Converters 2-phase power stage with 2x3A
Special LDOs [mA]
Universal LDOs [mA]
Current Sinks [mA]
Charge Pump [V/mA]
Audio DAC [dB SNR]
Audio ADC [dB SNR]
Audio Features
General Purpose ADC [bit]
Customizable Startup Sequences
Package WL-CSP16 (1.615x 1.615)

General Description

The AS3729 is a companion chip for the AS3715/21/22 PMICs containing control circuitry and power FETs for 2 phases. Up to 4 ICs can be used in parallel to achieve 24A drive capability.

This product suits for the following applications:

  • Mobile phones
  • Tablets
  • Notebooks


Title Category Headline Buy
AS3721/29EvalKit Application Board Evaluation Kit for AS3721/29

Technical Documents

Name Type Description Version Language
AS3729_BD000342_1-00.png Block Diagram AS3729 Block Diagram 1-00 English
AS3729_DS000348_1-00.pdf Datasheet Document version 1-24 1-00 English
AS3721_29_PD000295_1-00.png Other Product Document AS3721/29EvalKit Image 1-00 English

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