AS3729B Power Management Unit

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

Features

2 phases with separate control input
Separate power NMOS and PMOS for 4A per phase
Stand-alone zero-crossing operation
Integrated temperature monitoring
WL-CSP16: 1.615mm x 1.615mm, 0.4mm pitch

Benefits

Support for single or dual operation
2 x 4A output stages are running on 2.7MHz
Overtemperature protection
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-CSP16 (1.615 x 1.615)

General Description

The AS3729B 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.

Not Recommended for New Designs
ams AG is discontinuing production of this device.

This product suits for the following applications:

Mobile phones
Tablets
Notebooks

Tools

Title	Category	Headline	Buy
AS3715EvalKit	Application Board	Evaluation Kit for AS3715

Technical Documents

	Type	Description	Language
	Datasheet	Document version 1-03	English

Notifications

	Type	Description	Language
	EoL Notification	WITHDRAWAL of EOL for AS3729B-BWLT and AS3729B-BWLM (issued 2020-Jan)	English
	EoL Notification	AS252x, AS36xx, AS37xx_AS3956 (issued 2019-Sep)	English

Other Information

	Type	Description	Language
	Block Diagram	AS3729B Block Diagram	English