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NCP1421 - Boost Converter

Datasheet Summary

Description

1 FB Output Voltage Feedback Input.

Battery Detector Input and IC Enable.

enters the shutdown mode.

Drain Low

Battery Detector Output.

Features

  • for various battery.
  • operated.

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Datasheet preview – NCP1421

Datasheet Details

Part number NCP1421
Manufacturer ON
File Size 181.79 KB
Description Boost Converter
Datasheet download datasheet NCP1421 Datasheet
Additional preview pages of the NCP1421 datasheet.

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Full PDF Text Transcription

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NCP1421 Boost Converter - Sync-Rect, PFM, DC-DC, True-Cutoff, Ring-Killer 600 mA NCP1421 is a monolithic micropower high−frequency step−up switching converter IC specially designed for battery−operated hand−held electronic products up to 600 mA loading. It integrates Sync−Rect to improve efficiency and to eliminate the external Schottky Diode. High switching frequency (up to 1.2 MHz) allows for a low profile, small−sized inductor and output capacitor to be used. When the device is disabled, the internal conduction path from LX or BAT to OUT is fully blocked and the OUT pin is isolated from the battery. This True−Cutoff function reduces the shutdown current to typically only 50 nA. Ring−Killer is also integrated to eliminate the high−frequency ringing in discontinuous conduction mode.
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