The LM2991 is a low dropout adjustable negative regulator with a output voltage range between −2V to −25V. The LM2991 provides up to 1A of load current and features a ^On /Off pin for remote shutdown capability.
The LM2991 uses new circuit design techniques to provide a low dropout voltage, low quiescent current and low temperature coefficient precision reference. The dropout voltage at 1A load current is typically 0.6V and a guaranteed worst-case maximum of 1V over the entire operating temperature range. The quiescent current is typically 1 mA with a 1A load current and an input-output voltage differential greater than 3V. A unique circuit design of the internal bias supply limits the quiescent current to only 9 mA (typical) when the regulator is in the dropout mode (VO − VI
The LM2991 is short-circuit proof, and thermal shutdown includes hysteresis to enhance the reliability of the device when inadvertently overloaded for extended periods.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | LM2991QML Negative Low Dropout Adjustable Regulator datasheet (Rev. A) | 05 Oct 2011 | |
| * | SMD | LM2991QML SMD 5962-96505 | 21 Jun 2016 | |
| More literature | Die D/S LM2991 MD8 Negative Low Dropout Adj Regulator | 20 Sep 2012 |
For additional terms or required resources, click any title below to view the detail page where available.
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| CFP (NAC) | 16 | Ultra Librarian |
| DIESALE (Y) | — | |
| WAFERSALE (YS) | — |
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.