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PT4103 - White LED Step-Up Converter

Datasheet Summary

Description

The PT4103 is a step-up DC/DC converter designed for driving up to 8 white LEDs in series from a single cell Lithium Ion battery with constant current.

Features

  • z z z z z z z z Drives Up to 5 Series White LEDs from 2.5V Drives Up to 8 Series White LEDs from 3.6V Up to 87% Efficiency 1.2MHz Fixed Switching Frequency Low 104mV Feedback Voltage Open Load Shutdown Soft Start/PWM Dimming SOT23-6 Packages.

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Datasheet preview – PT4103

Datasheet Details

Part number PT4103
Manufacturer Powtech
File Size 376.74 KB
Description White LED Step-Up Converter
Datasheet download datasheet PT4103 Datasheet
Additional preview pages of the PT4103 datasheet.

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Full PDF Text Transcription

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PT4103 White LED Step-Up Converter GENERAL DESCRIPTION The PT4103 is a step-up DC/DC converter designed for driving up to 8 white LEDs in series from a single cell Lithium Ion battery with constant current. Because it directly regulates output current, the PT4103 is ideal for driving light emitting diodes (LEDs) whose light intensity is proportional to the current passing through them, not the voltage across their terminals. A single external resistor sets LED current between 5mA and 20mA, which can then be easily adjusted using either a DC voltage or a pulse width modulated (PWM) signal. Its low 104mV feedback voltage reduces power loss and improves efficiency.
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