The LM27761 low-noise regulated switched-capacitor voltage inverter delivers a very low-noise adjustable output for an input voltage in the range of 2.7V to 5.5V. Four low-cost capacitors are used in the application design to provide up to 250mA of output current. The regulated output for the device is adjustable between −1.5V and −5V. The LM27761 operates at 2MHz (typical) switching frequency to reduce output resistance and voltage ripple. With an operating current of only 370µA (charge-pump power efficiency greater than 80% with most loads) and 7µA typical shutdown current, the LM27761 provides excellent performance when driving power amplifiers, DAC bias rails, and other high-current, low-noise voltage applications.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | LM27761 Low-Noise, Regulated, Switched-Capacitor Voltage Inverter datasheet (Rev. D) | PDF | HTML | 16 Oct 2025 |
| Application note | Generate Negative Power Supply from Positive Power Supply | PDF | HTML | 29 Jul 2025 | |
| Application note | Quick Reference Guide To TI Buck Switching DC/DC Application Notes (Rev. B) | PDF | HTML | 23 May 2022 | |
| Technical article | Low-noise charge pumps make it easy to create negative voltages | PDF | HTML | 30 Aug 2017 | |
| Technical article | The top three ways to split a voltage rail to a bipolar supply | PDF | HTML | 27 Dec 2016 | |
| Technical article | Pump it up quietly | PDF | HTML | 19 Feb 2016 | |
| White paper | The Forgotten Converter | 15 Jun 2015 |
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The LM27761EVM aids in evaluation of the LM27761 Regulated Charge Pump Inverter. The 2MHz switched capacitor boost provides up to 250 mA of output current utilizing few external components. With a low current PFM or ECO mode, the LM27761 draws a minimal load from the power supply when (...)
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| WSON (DSG) | 8 | Ultra Librarian |
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