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LN9310 - Tiny Package Low Dropout Current Source

General Description

The LN9310 low-dropout bias supply for white LEDs is a high-performance alternative to the simple ballast resistors used in conventional white LED designs.

The LN9310 uses a internal resistor to set the bias current for six 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.
  • DFN3×3-10.
  • QFN3×3-16 Function Denotes Package Type: DFN3×3-10 Denotes Package Type: QFN3×3-16 Embossed Tape :Standard Feed Embossed Tape :Reverse Feed Normal package Pb Free package Green package Rev.1.0.
  • June.14, 2011 1 www. natline.

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Datasheet Details

Part number LN9310
Manufacturer natlinear
File Size 267.70 KB
Description Tiny Package Low Dropout Current Source
Datasheet download datasheet LN9310 Datasheet

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Tiny Package Low Dropout Current Source LN9310 ■ General Description The LN9310 low-dropout bias supply for white LEDs is a high-performance alternative to the simple ballast resistors used in conventional white LED designs. The LN9310 uses a internal resistor to set the bias current for six LEDs, which are matched to 3%. The LN9310'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 LN9310 requires a 60mV dropout at a 20mA load on each output to match the LED brightness. The LN9310 is suitable for single cell Li-ion battery power device that using low forward voltage white LEDs.