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LN2114 - High Efficiency 1.5X Fractional Charge Pumps

This page provides the datasheet information for the LN2114, a member of the LN2113 High Efficiency 1.5X Fractional Charge Pumps family.

Datasheet Summary

Description

The LN2113 and LN2114 are low noise, constant frequency charge pump DC/DC converters that use fractional (1.5X) conversion to increase efficiency in white LED applications.

The devices can be used to produce current levels up to 20mA for each output from a 2.7V to 5.5V input.

Features

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  • LN2113: four outputs.
  • LN2114: six outputs.
  • 20mA full-scale current.
  • 32-position logarithmic scale with digital control.
  • Low noise constant frequency operation.
  • 33% less input current than doubler charge pump.
  • High accuracy brightness matching.
  • Vin range: 2.7v to 5.5v.
  • IQ.

📥 Download Datasheet

Datasheet preview – LN2114

Datasheet Details

Part number LN2114
Manufacturer natLinear
File Size 327.82 KB
Description High Efficiency 1.5X Fractional Charge Pumps
Datasheet download datasheet LN2114 Datasheet
Additional preview pages of the LN2114 datasheet.

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Full PDF Text Transcription

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LN2113/4 High Efficiency 1.5X Fractional Charge Pumps For White LED Applications ■ General Description The LN2113 and LN2114 are low noise, constant frequency charge pump DC/DC converters that use fractional (1.5X) conversion to increase efficiency in white LED applications. The devices can be used to produce current levels up to 20mA for each output from a 2.7V to 5.5V input. A low external parts count (two 1μF flying capacitors and two small bypass capacitors at VIN and OUT) makes the LN2113/LN2114 ideally suited for small battery-powered applications. Simple Serial Interface is used to enable, disable, and set the LED drive current for 32-level logarithmic scale LED brightness control.
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