National Semiconductor LM2660 LM2661 Switching Capacitor Voltage Converter User Guide and Specifications
Summary
This highly efficient CMOS charge-pump voltage converter provides essential functionality to invert or double positive input voltages using a compact, inductor-less design. Ideal for powering battery-operated devices, such as cell phones, laptops, and portable medical instruments, it features high conversion efficiency and extremely low standby currents. This documentation details the electrical specifications, application circuits (inverter/doubler), and operational guidelines needed for professional engineers designing robust power solutions.
Manual Details
| Brand | National |
|---|---|
| Pages | 13 |
| File Size | 290.63 KB |
| Published | July 22, 2026 |
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Frequently Asked Questions
What distinguishes the LM2661 from the LM2660 model?
The LM2661 includes a low current shutdown mode using the SD pin, which reduces the quiescent current to 0.5 µA.
How can the oscillator frequency be modified externally?
The oscillator frequency can be lowered by adding an external capacitor to the OSC pin.
What is the maximum continuous output current available?
The device can provide a maximum continuous output current of 120 mA.