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LN9305 - 5 Channel Low Dropout Current Source

General Description

The LN9305 low-dropout bias supply for white LEDs is a high-performance alternative to the simple ballast resistors used in conventional white LED designs.

The LN9305 uses a internal resistor to set the bias current for five LEDs, which are matched to 3%.

Key Features

  • a low 60mV dropout at 20mA.
  • 3% high accuracy current matching.
  • 20mA full scale current.
  • PWM brightness control.
  • 2.5V to 5.5V supply voltage range.
  • Thermal shutdown protection.
  • Under-voltage protection.
  • Package.
  • SOT-23-8.
  • DFN2×2-8 Function Denotes Package Type: SOT-23-8 Denotes Package Type: DFN2×2-8 Embossed Tape :Standard Feed Embossed Tape :Reverse Feed Normal package Pb Free package Green package VIN C 0.1uF LED1 LED2 LED3 LED4 LED5 PWM Rev.1.0.

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Datasheet Details

Part number LN9305
Manufacturer natlinear
File Size 275.23 KB
Description 5 Channel Low Dropout Current Source
Datasheet download datasheet LN9305 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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5 Channel Low Dropout Current Source LN9305 ■ General Description The LN9305 low-dropout bias supply for white LEDs is a high-performance alternative to the simple ballast resistors used in conventional white LED designs. The LN9305 uses a internal resistor to set the bias current for five LEDs, which are matched to 3%. The LN9305's advantages over ballast resistors include much lower bias variation with supply voltage variation, significantly lower dropout voltage, and in some applications, significantly improved efficiency. The LN9305 requires a 60mV dropout at a 20mA load on each output to match the LED brightness. The LN9305 is suitable for single cell Li-ion battery power device that using low forward voltage white LEDs.