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LM2623 - DC/DC Boost Converter

This page provides the datasheet information for the LM2623, a member of the LM2 DC/DC Boost Converter family.

Datasheet Summary

Description

The LM2623 is a high efficiency, general purpose, step-up DC-DC switching regulator for battery-powered and low input voltage systems.

It accepts an input voltage between .8 and 14 volts and converts it into a regulated output voltage between 1.24 and 14 volts.

Features

  • n Good Efficiency Over a Very Wide Load Range n Very Low Output Voltage Ripple n Small, Mini-SO-8 Package (Half the Footprint of Standard 8 pin SO Package) n 1.09 mm Package Height n Up to 2 MHz Switching Frequency n .8V to 14V Operating Voltage n 1.1V Start-up Voltage n 1.24V - 14V Adjustable Output Voltage n Up to 2A Load Current at low Output Voltages n 0.17Ω Internal MOSFET n Up to 90% Regulator Efficiency n 80 µA Typical Operating Current (into VDD pin of supply) n < 2.5µA Guaranteed Supply.

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Datasheet preview – LM2623

Datasheet Details

Part number LM2623
Manufacturer National Semiconductor
File Size 216.12 KB
Description DC/DC Boost Converter
Datasheet download datasheet LM2623 Datasheet
Additional preview pages of the LM2623 datasheet.

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Full PDF Text Transcription

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LM2623 General Purpose, Gated Oscillator Based, DC/DC Boost Converter July 2003 LM2623 General Purpose, Gated Oscillator Based, DC/DC Boost Converter General Description The LM2623 is a high efficiency, general purpose, step-up DC-DC switching regulator for battery-powered and low input voltage systems. It accepts an input voltage between .8 and 14 volts and converts it into a regulated output voltage between 1.24 and 14 volts. Efficiencies up to 90% are achievable with the LM2623. In order to adapt to a number of applications, the LM2623 allows the designer to vary the output voltage, the operating frequency (300kHz to 2 MHz) and duty cycle (17% to 90%) to optimize the part’s performance. The selected values can be fixed or can vary with battery voltage or input to output voltage ratio.
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