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AS3658 Power Management Unit

3 buck DC-DC


  • OTP programmable boot sequence
  • 3 DC-DCs and 7 LDOs
  • Integrated audio codec


  • Flexible and fast adaptation to different processors/applications
  • Multiple independent voltage rails
  • Small PCB area

Product parameters

DC-DC Step Up Converters 2x general purpose (voltage or current output)
DC-DC Step Down Converters 3x0.5A or 1.6A + 2x0.5A or 1.6A + 1A
Special LDOs [mA] 1x400 \ 2x150
Universal LDOs [mA] 4x200
Current Sinks [mA] 4x40, 3x40 (HV)
Charge Pump [V/mA] 5 / 100
Audio DAC [dB SNR] 96
Audio ADC [dB SNR] 84
Audio Features 2x headphone \ 1x line out \ 1x line in \ Microphone input \ Audio mixer \ Equalizer
General Purpose ADC [bit] 10
Charger Step-down \ Linear + linear
Customizable Startup Sequences 8x and programmable
Package BGA-124 (8x8)

General Description

The AS3658 is a fully integrated programmable audio and power management unit containing buck converters, boost converters, low noise LDOs, battery chargers, audio codec, headphone amp, RTC, touch screen interface, general purpose ADC and current sinks.

This product suits for the following applications:

  • PDA, PMP, GPS navigation system
  • 1 cell Li+ or 3 cell NiMH powered devices


Name Type Description Language
AS3658_SW000142_1-00.rar Software English Software Setup English
AS3658_SW000140_1-00.pdf Software v3.2 Boot ROM mapping table English
AS3658_SW000139_1-00.pdf Software E v3.5 Boot ROM mapping table (Mango) English
AS3658_SW000137_1-00.pdf Software F v3.5 Boot ROM mapping table English
AS3658_SW000136_1-00.pdf Software E v3.5 Boot ROM mapping table (Marvell) English
AS3658_SW000135_1-00.pdf Software D v3.3 Boot ROM mapping table English
AS3658_SW000134_1-00.pdf Software C v3.3 Boot ROM mapping table English

Technical Documents

Name Type Description Version Language
AS3658_AN000126_1-00.pdf Application Note MOS FET selection 1-00 English
AS3658_AN000125_1-00.pdf Application Note Audio ground concepts 1-00 English
AS3658_AN000124_1-00.pdf Application Note Switch I2S input 1-00 English
AS3658_BD000292_1-00.png Block Diagram AS3658 Block Diagram 1-00 English
AS3658_DS000233_1-00.pdf Datasheet Document version 1v13 1-00 English
AS3658_UG000182_1-00.pdf User Guide Demo board 1-00 English

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