The PM6641 demonstration board is a monolithic voltage regulator (VR) module with internal power MOSFETs, specifically designed to supply DDR2/3 memory and chipset in ultramobile PC and real estate constrained portable systems.
It integrates three independent, adjustable, constant frequency buck converters, a ±2 Apk low dropout (LDO) linear regulator, and a ±15 mA low-noise buffered reference.
Each regulator is provided with basic undervoltage (UV) and overvoltage (OV) protections, programmable soft-start and current limit, active soft-end, and pulse skipping at light loads.
| Manufacturer | STMicroelectronics |
|---|---|
| Category | AC/DC and DC/DC Conversion |
| Sub-Category | DC/DC SMPS - Multi Output |
| Eval Board Part Number | 497-8425-ND |
| Eval Board Supplier | STMicroelectronics |
| Eval Board |
Board not Stocked
|
| Topology |
Step Down
|
| Outputs and Type |
4 Non-Isolated
|
| Voltage Out: Highest Current First |
1.8V, 1.05V, 1.5V, 0.9V
|
| Current Out |
4A, 3.5A, 2.5A, 2A
|
| Voltage In |
2.7 ~ 3.6 V
|
| Efficiency @ Conditions |
>85%, 3.3V in, 1.8V @ 2 A, 1.5V @ 1.2 A, 1.05V @ 1.1 A
|
| Voltage Out Range |
- Not Given
|
| Features |
Current Limit (Adj. or Fixed)
Light Load Mode Over Voltage Protection Power Good Output Shutdown, Enable, Standby Soft Start Thermal Protection Under Voltage Protection, Brown-Out |
| Switching Frequency |
750 kHz
|
| Standby Current [Typical] |
- Not Given
|
| Quiescent Current [Typical] |
- Not Given
|
| Component Count + Extras |
51 + 26
|
| Internal Switch |
Yes
|
| Design Author |
STMicroelectronics
|
| Application / Target Market |
Computers
|
| Standby Current [Maximum] |
10 µA
|
| Quiescent Current [Maximum] |
3 mA
|
| Main I.C. Base Part |
PM6641
|
| Date Created By Author | |
| Date Added To Library | 2011-03 |
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