Key facts
- Brand
- STMicroelectronics
- Model
- ST1S03
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-08-10
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STMicroelectronics ST1S03 Datasheet
The ST1S03 is a step-down current mode PWM DC-DC converter optimized for powering low-voltage digital cores in HDD applications. It features an internal 1.5A power switch and operates at a fixed 1.5MHz switching frequency, allowing the use of small surface-mount components like tiny inductors and capacitors. The device is available in a 3x3mm DFN6D exposed pad package.
Read onlineSTMicroelectronics ST1S03 specifications
| Output current | 1.5 A |
|---|---|
| Switching frequency | 1.5 MHz |
| Package type | DFN6D (3x3 mm) |
| Quiescent current | 2.5 mA |
All STMicroelectronics ST1S03 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 switching frequency of the ST1S03?
The ST1S03 operates at a fixed switching frequency of 1.5 MHz.
What is the maximum output current?
The device provides up to 1.5 A of output current.
What is the minimum inductor value for ST1S03?
The device can work with a minimum of 1µH inductor.
From: STMicroelectronics AN2093 Application Note for ST1S03 Buck Converter
What diode does STMicroelectronics suggest for the application?
They suggest using the STPS2L30A Schottky diode.
From: STMicroelectronics AN2093 Application Note for ST1S03 Buck Converter
Does the device require external compensation components?
No, it is a complete regulator with internal compensation eliminating additional components.
What is the maximum output current capability of this regulator?
The device provides up to 1.5A over an input voltage range of 3V to 16V.