AS3729 Power Management Unit
6A dual-phase power stage (2 x 3A)
Features
- 2 phases with separate control input
- Separate power NMOS and PMOS for 3A 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-phase operation
- 2 x 3A output stages are running on 3MHz
- Overtemperature protection
- Cost effective, small package
Product parameters
| DC-DC Step Up Converters | |
|---|---|
| DC-DC Step Down Converters | 2-phase power stage with 2x3A |
| 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 (1.615x 1.615) |
General Description
The AS3729 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 24A 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 |
|---|---|---|---|
| AS3721/29EvalKit | Application Board | Evaluation Kit for AS3721/29 |
Technical Documents
| Type | Description | Language | |
|---|---|---|---|
| Datasheet | Document version 1-24 | English |
Notifications
| Type | Description | Language | |
|---|---|---|---|
| EoL Notification | AS252x, AS36xx, AS37xx_AS3956 (issued 2019-Sep) | English |
Other Information
| Type | Description | Language | |
|---|---|---|---|
| Block Diagram | AS3729 Block Diagram | English | |
| Factsheet | Smart Power | English |
Related Boards
Evaluation Kit for AS3721/29
AS3721/29EvalKit
The AS3721/29 Evaluation Kit allows you to easily evaluate the principle functionality of the AS3721 power management unit. All functions and registers can be controlled via the included PC GUI software. Key Features: - 4 DC-DC step-down regulators (3-4 MHz) - 3 DC-DC step-down controller - 12 universal LDOs - RTC - Supervisor with interrupt generation and selectable warning levels - General purpose IOs - ADC with intern and external sources - OTP programmable boot and power-down sequence - Stand-by function with programmable sequence and voltages - Control interface - Package: 124-pin CTBGA (8x8mm), 0.5mm pitch Applications: The device is suitable for tablet PCs, netbooks, portable media players, portable navigation devices, and mobile internet devices.