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ZXLD381 - Single or Multi Cell LED Driver Solution

Datasheet Summary

Description

The ZXLD381 is a simple PFM, DC-DC controller combined with a high performance internal switching transistor, enabling the production of a high efficiency boost converter for use in single cell applications.

A block diagram is shown for the ZXLD381 in Fig 1.

Pulse Cont rol 1.

Features

  • 85% Efficiency User adjustable output current Single cell operation (0.9V minimum) Low saturation transistor SOT23-3 package Available also in Die form Simple.

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Datasheet preview – ZXLD381

Datasheet Details

Part number ZXLD381
Manufacturer Zetex
File Size 138.67 KB
Description Single or Multi Cell LED Driver Solution
Datasheet download datasheet ZXLD381 Datasheet
Additional preview pages of the ZXLD381 datasheet.

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Full PDF Text Transcription

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www.DataSheet4U.com ZXLD381 Single or Multi Cell LED Driver Solution Summary The ZXLD381 is a single cell LED driver designed for applications where step-up voltage conversion from a very low input voltage is required. These applications mainly operate from 1.5V or 1.2V cells. The IC generates constant current pulses that are ideal for driving single or multiple LEDs over a wide range of operating voltages. The ZXLD381 uses a PFM control technique to drive an internal switching transistor which exhibits a low saturation resistance. This ensures high efficiency, even for input voltages as low as 1V. The IC can start up under full load and operates down to an input voltage of only 0.9V.
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