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LP3320 - Constant Current Switching Regulator

Datasheet Summary

Description

The LP3320 is a 1.0MHz PWM boost switching regulator designed for constant-current white LED driver applications.

The LP3320 can drive a string of up to 11 white LEDs in series, ensuring uniform brightness and eliminating several ballast resistors.

Features

  • Up to 94% efficiency.
  • Shut-down current:.

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Datasheet preview – LP3320

Datasheet Details

Part number LP3320
Manufacturer Lowpowersemi
File Size 379.21 KB
Description Constant Current Switching Regulator
Datasheet download datasheet LP3320 Datasheet
Additional preview pages of the LP3320 datasheet.

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Full PDF Text Transcription

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Preliminary Datasheet LP3320 High Performance, Constant Current Switching Regulator For 11PCS White LED In Series General Description The LP3320 is a 1.0MHz PWM boost switching regulator designed for constant-current white LED driver applications. The LP3320 can drive a string of up to 11 white LEDs in series, ensuring uniform brightness and eliminating several ballast resistors. The LP3320 implements a constant frequency 1.0MHz 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 250mV, which reduces the power dissipation in the current setting resistor. Highly integration and internal compensation network minimizes as 5 external component counts.
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