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LP3380 - Constant Current Switching Regulator

Description

The LP3380 is a 1MHz PWM boost switching regulator designed for constant-current white LED driver applications.

The LP3380 can drive a string of up to 8 white LEDs in series, ensuring uniform brightness and eliminating several ballast resistors.

Features

  • High Efficiency: 92%.
  • 1MHzFixed-Frequency PWM Operation.
  • Maximum Output Voltage up to 29V.
  • Operating Range : 2.2V to 5.5V.
  • Shutdown Supply Current:.

📥 Download Datasheet

Datasheet Details

Part number LP3380
Manufacturer Lowpowersemi
File Size 969.35 KB
Description Constant Current Switching Regulator
Datasheet download datasheet LP3380 Datasheet

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Full PDF Text Transcription

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Preliminary Datasheet LP3380 High Performance, Constant Current Switching Regulator For 8PCS White LED In Series General Description The LP3380 is a 1MHz PWM boost switching regulator designed for constant-current white LED driver applications. The LP3380 can drive a string of up to 8 white LEDs in series, ensuring uniform brightness and eliminating several ballast resistors. The LP3380 implements a constant frequency 1MHz 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 200 mV, 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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