The LMS3655 synchronous buck regulators are optimized for high performance applications, providing an adjustable output of 1 V to 20 V. Seamless transition between PWM and PFM modes, along with a low quiescent current, ensures high efficiency and superior transient responses at all loads.
Advanced high-speed circuitry allows the LMS3655 to regulate an input of 24 V to an output of 3.3 V at a fixed frequency of 400 kHz while also enabling a continuous load current of 5.5 A. An innovative frequency foldback architecture allows this device to regulate a 3.3-V output from an input voltage of only 3.5 V. The input voltage can range up to 36 V, with transient tolerance up to 42 V, easing input surge protection design.
An open-drain reset output, with built-in filtering and delay, provides a true indication of system status. This feature negates the requirement for an additional supervisory component, saving cost and board space.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | LMS3655 5.5-A, 36-V Synchronous, 400-kHz DC-DC Step-Down Converter datasheet (Rev. B) | PDF | HTML | 01 Mar 2018 |
| Selection guide | Buck Converter Quick Reference Guide (Rev. B) | 08 Apr 2021 | ||
| EVM User's guide | LMS36x5-Q1 EVM User's Guide (Rev. A) | 13 Apr 2018 | ||
| Technical article | Powering up the performance of sensitive test and measurement systems | PDF | HTML | 17 Oct 2017 | |
| Application note | Designing High Performance, Low-EMI, Automotive Power Supplies | 30 Sep 2017 |
For additional terms or required resources, click any title below to view the detail page where available.
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFN-HR (RNL) | 22 | Ultra Librarian |
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