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.
| Type | Title | 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 DAC38RF80EVM is the circuit board for evaluating DAC38RF80/84/90 digital-to-analog converters (DACs). The EVM can be used to evaluate the performance of the DAC up to 9-GSPS sampling rate. It is designed to work with the FPGA-based pattern generator card TSW14J56EVM (Rev B and up). The (...)
The DAC38RF89 evaluation module (EVM) is the circuit board for evaluating DAC38RF89 digital-to-analog converters (DACs). The DAC38RFEVM can be used to evaluate the performance of the DAC up to 9-GSPS sampling rate and is designed to work with the TSW14J56EVM (Rev B and up). The available FMC (...)
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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