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-OSRAM 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 | ||
EoL Notification | AS3729B-BWLx EoL Notification (issued Nov-22-2021) | English |
Other information
Type | Description | Language | ||
---|---|---|---|---|
Block Diagram | AS3729B Block Diagram | English |