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The LM2833 regulator is a monolithic, high frequency, PWM step-down DC/DC converter available in a 10-pin WSON or MSOP-PowerPAD package. It contains all the active functions to provide local DC/DC conversion with fast transient response and accurate regulation in the smallest possible PCB area. With a minimum of external components, the LM2833 is easy to use. The ability to drive 3.0A loads with an internal 56 mΩ PMOS switch using state-of-the-art 0.5µm BiCMOS technology results in the best power density available. The world-class control circuitry allows on-times as low as 30ns, thus supporting exceptionally high frequency conversion over the entire 3V to 5.5V input operating range down to the minimum output voltage of 0.6V. Switching frequency is internally set to 1.5MHz or 3.0MHz, allowing the use of extremely small surface mount inductors and capacitors. Even though the operating frequency is high, efficiencies up to 93% are easy to achieve. External shutdown is included, featuring an ultra-low stand-by current of 300nA. The LM2833 utilizes peak current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce inrush current, cycle-by-cycle current limit, frequency foldback, thermal shutdown, and output over-voltage protection.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | LM2833 1.5MHz/3MHz 3.0A Step-Down DC-DC Switching Regulator datasheet (Rev. E) | 03 Apr 2013 | |
| EVM User's guide | AN-1843 LM2833X LLP Demo Board (Rev. B) | 26 May 2013 | ||
| EVM User's guide | AN-1717 LM2833X eMSOP Demo Board (Rev. C) | 29 Apr 2013 | ||
| EVM User's guide | AN-1844 LM2833Z eMSOP Demo Board (Rev. B) | 25 Apr 2013 | ||
| EVM User's guide | AN-1845 LM2833Z LLP Demo Board (Rev. B) | 25 Apr 2013 | ||
| Application note | AN-1973 Benefits and Challenges of High-Frequency Regulators (Rev. A) | 23 Apr 2013 |
For additional terms or required resources, click any title below to view the detail page where available.
The LM2833X LLP Demo Board is designed to demonstrate the capabilities of the LM2833X 1.5MHz switching regulator in the LLP-10 package.
The demo board is configured to provide an output of 1.2V at up to 3A from an input voltage range of 3V to 5.5V. The board is thermally optimized with the small (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| HVSSOP (DGQ) | 10 | Ultra Librarian |
| WSON (DSC) | 10 | Ultra Librarian |
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