LM2797 - 120mA High Efficiency Step-Down Switched Capacitor Voltage Converter

Product Overview

National Semiconductor

Part number	LM2797
Manufacturer	National Semiconductor
File Size	388.09 KB
Description	120mA High Efficiency Step-Down Switched Capacitor Voltage Converter
Datasheet	LM2797 Datasheet
Note	This datasheet PDF includes multiple part numbers: LM2797, LM2. Please refer to the document for exact specifications by model.
Additional preview pages of the LM2797 datasheet.

The LM2797/98 switched capacitor step-down DC/DC converters efficiently produce a 120mA regulated low-voltage rail from a 2.6V to 5.5V input.

of the LM2797/98 include input voltage and output voltage monitoring. Pin BATOK provides battery monitoring by indicating when the input voltage is above 2.85V (typ. ). Pin POK verifies that the output voltage is not more than 5% (typ. ) below the nominal output voltage of the part. The optimal external component requirements of the LM2797/98 solution minimize size and cost, making the part ideal for Li-Ion and other battery powered designs. Two 1µF flying capacitors and two 10µF bypass capacitors.

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Published: Mar 22, 2005 |