AS3721 Power Management Unit
4 buck DC-DC, 24A DC-DC controller, 12 LDOs, general purpose ADC
Features
- 4 DC-DC step-down regulators (3-4MHz)
- 3 DC-DC step-down controller
- 11 universal LDOs
- Low power real time clock (<1uA)
- Programmable stand-by sequence
Benefits
- Compact design due to small coils for IO and memory voltage generation
- High current generation with external power stages to minimize PMIC power dissipation
- Multiple independent voltage rails for general purpose IO supplies
Product parameters
| DC-DC Step Up Converters | |
|---|---|
| DC-DC Step Down Converters | 8-phase + 2-phase + 2-phase + 4A +2A + 2x1.5A |
| Special LDOs [mA] | |
| Universal LDOs [mA] | 12x300 |
| Current Sinks [mA] | |
| Charge Pump [V/mA] | |
| Audio DAC [dB SNR] | |
| Audio ADC [dB SNR] | |
| Audio Features | |
| General Purpose ADC [bit] | 10, 12-channel |
| Charger | |
| Customizable Startup Sequences | Programmable |
| Package | BGA-124 (8x8mm) |
General description
The programmable power management unit AS3721 features 4x DC-DC buck converters, 3x buck converter (6A to 24A) and 12 low noise LDOs. The high level of integration and the 4MHz switching frequencies ensure small system footprint.
This product suits for the following applications:
- Tablet PCs
- Netbooks
- Portable media players
- Solid state disk drives
- Embedded systems
Tools
| Title | Category | Headline | Buy |
|---|---|---|---|
| AS3721/29EvalKit | Application Board | Evaluation Kit for AS3721/29 |
Environmental documents
| Type | Description | Language | ||
|---|---|---|---|---|
| Material Declaration Form | MDF_190120013_AS3721-BCTT-00 | English | ||
| Material Declaration Form | MDF_190120013_AS3721-BCTT-00 | English |
Other information
| Type | Description | Language | ||
|---|---|---|---|---|
| Block Diagram | AS3721 Block Diagram | 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.