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 |
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| Package | Pins | Download |
|---|---|---|
| CFP (NAC) | 16 | View options |
| DIESALE (Y) | — | |
| WAFERSALE (YS) | — |
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