LP3385 Datasheet PDF (Constant Current Switching Regulator)

LP3385 - Constant Current Switching Regulator

Description

The LP3385 is a 1.2MHz PWM boost switching regulator designed for constant- current white LED driver applications.

The LP3385 can drive a string of up to 10 white LEDs in series, ensuring uniform brightness and eliminating several ballast resistors.

Features

High Efficiency: 92% 　 1.2MHzFixed-Frequency PWM Operation Maximum Output Voltage up to 36V Operating Range : 2.7V to 6V Shutdown Supply Current:.

Datasheet Details

Part number	LP3385
Manufacturer	Lowpowersemi
File Size	525.21 KB
Description	Constant Current Switching Regulator
Datasheet	LP3385 Datasheet

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Full PDF Text Transcription

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Preliminary Datasheet LP3385 High Performance, Constant Current Switching Regulator For 39PCS White LED Driver General Description The LP3385 is a 1.2MHz PWM boost switching regulator designed for constant- current white LED driver applications. The LP3385 can drive a string of up to 10 white LEDs in series, ensuring uniform brightness and eliminating several ballast resistors. The LP3385 implements a constant frequency 1.2MHz PWM control scheme. The high frequency PWM operation also saves board space by reducing external component sizes. To improve efficiency, the feedback voltage is set to 300 mV, which reduces the power dissipation in the current setting resistor. Highly integration and internal compensation network minimizes as 5 external component counts.

Published: Jan 30, 2016 |