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AS3728 Power Management Unit

8A HV dual-phase power stage (2 x 4A)

Features

  • 2 phases with separate control input
  • Separate low side and high side power NMOS for 4A per phase
  • Stand-alone zero-crossing operation
  • Integrated temperature monitoring
  • 12V operating range
  • WL-CSP24: 2.415mm x 1.615mm, 0.4mm pitch

Benefits

  • Support for single or dual-phase operation
  • 2 x 4A output stages are running on 3MHz
  • Overtemperature protection
  • Direct conversion from standard 12V rails
  • Cost effective, small package

Product parameters

DC-DC Step Up Converters
DC-DC Step Down Converters 2-phase power stage with 2x4A
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]
Charger
Customizable Startup Sequences
Package WL-CSP24 (2.415x 1.615)

General Description

The AS3728 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 32A drive capability.

This product suits for the following applications:

  • Mobile phones
  • Tablets
  • Notebooks

Tools

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

Technical Documents

Name Type Description Version Language
AS3728_BD000341_1-00.png Block Diagram AS3728 Block Diagram 1-00 English
AS3728_DS000350_1-00.pdf Datasheet Document version 1-03 1-00 English
AS3722_28_PD000297_1-00.png Other Product Document AS3722/28EvalKit Image 1-00 English

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