This demonstration board is based on the ST1S12 family of synchronous step-down DC-DC converters optimized for powering low-voltage digital cores in HDD (hard disk drive) applications and is generally used to replace high-current linear solutions when power dissipation may cause high heating of the application environment.
It provides up to 0.7 A over an input voltage range of 2.5 V to 5.5 V. A high switching frequency of 1.7 MHz allows the use of tiny surface-mount components. For the adjustable version, a resistor divider to set the output voltage value, an inductor, and two capacitors are required. Only an inductor and 2 capacitors are needed for the 1.2 V and 1.8 V fixed version. A low output ripple is guaranteed by the current mode PWM topology and by the use of low ESR surface-mount ceramic capacitors.
The ST1S12 device is thermal protected and current limited to prevent damage due to accidental short-circuit. This family of products is available in the TSOT23-5L package.
|DB0691: 0.7 A / 1.2 V synchronous buck converter with enable function based on the ST1S12XX||1.2||72 KB|
|Gerber files for STEVAL-ISA055V1 board||1.0||185 KB|
|BOM for STEVAL-ISA055V1 board||1.0||44 KB|
|Board schematics for STEVAL-ISA055V1 board||1.0||35 KB|
|Evaluation products license agreement||1.4||128 KB|
|Part Number||Core Product||Marketing Status||Unit Price (US$) *||Quantity||ECCN (EU)||ECCN (US)||Country of Origin||More info||Order from ST||Order from Distributors|
|STEVAL-ISA055V1||ST1S12GR||Active : Product is in volume production||30.63||1||NEC||EAR99||ITALY||MORE INFO||Buy Direct Add to cart||DISTRIBUTOR AVAILABILITY|
|Part Number||Marketing Status||Package||Grade||RoHS Compliance Grade||Material Declaration**|
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.