Key facts
- Brand
- STMicroelectronics
- Model
- PM6675AS
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-08-10
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STMicroelectronics PM6675AS High Efficiency Step-Down Controller Datasheet
The PM6675AS is a high-efficiency step-down controller integrated with an independent low-drop-out (LDO) linear regulator. It utilizes a constant-on-time (COT) architecture to ensure fast transient response and supports both electrolytic and ceramic output capacitors. The device includes selectable low-consumption modes and a low-noise option with a minimum switching frequency of 33 kHz for audio-sensitive applications.
The controller features an embedded integrator control loop to compensate for DC voltage error due to output ripple. It offers selectable current limits for the LDO section (+1 A or +2 A) and includes dedicated power-good signals for both the switching and LDO regulators. The device is designed for industrial applications on 24 V, graphic cards, and embedded computer systems.
STMicroelectronics PM6675AS specifications
| Input voltage range | 4.5 V to 36 V |
|---|---|
| Output voltage range (Switching) | 0.6 V to 3.3 V |
| Output voltage (Fixed) | 1.5 V |
| LDO Output voltage range | 0.6 V to 3.3 V |
| LDO Current limit | +1 A or +2 A |
| Switching frequency (Low-noise mode) | 33 kHz |
| Soft-start time | 3 ms |
| Operating ambient temperature | -40 to 85 °C |
| Package | VFQFPN-24 4x4 |
Source: STMicroelectronics PM6675AS High Efficiency Step-Down Controller Datasheet
All STMicroelectronics PM6675AS documents by type
Ratings, dimensions and ordering codes, for selection and design work.
How to use the product for one specific task, with worked examples.
Questions answered in these manuals
What is the input voltage range for the PM6675AS?
The input voltage range is 4.5 V to 36 V.
From: STMicroelectronics PM6675AS High Efficiency Step-Down Controller Datasheet
Can the PM6675AS support ceramic output capacitors?
Yes, it supports both electrolytic and ceramic output capacitors.
From: STMicroelectronics PM6675AS High Efficiency Step-Down Controller Datasheet
What is the input voltage range for this evaluation board?
The board accepts an input voltage ranging from 4.5 V to 36 V.
What is the fixed output voltage of this evaluation board?
The board provides a fixed output voltage of 1.5 V.
What is the switching frequency in non-audible pulse-skip mode?
The minimum switching frequency is set to 33 kHz for audio-sensitive applications.
From: STMicroelectronics AN2815 Application Note PM6675AS High-Efficiency Step-Down Controller
Does the PM6675AS support ceramic output capacitors?
Yes, it supports all ceramic output capacitor applications.
From: STMicroelectronics AN2815 Application Note PM6675AS High-Efficiency Step-Down Controller