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 |