Datasheet4U Logo Datasheet4U.com

LM3509 - High Efficiency Boost

Datasheet Summary

Description

The LM3509 current mode boost converter offers two separate outputs.

The first output (MAIN) is a constant current sink for driving series white LED’s.

Features

  • 1.
  • 2 Integrated OLED Display Power Supply and LED Driver.
  • Drives up to 10 LED’s at 30mA.
  • Drives up to 5 LED’s at 20mA and Delivers up to 21V at 40mA.
  • Over 90% Efficient.
  • 32 Exponential Dimming Steps.
  • 0.15% Accurate Current Matching Between Strings.
  • Internal Soft-Start Limits Inrush Current.
  • True Shutdown Isolation for LED’s.
  • Wide 2.7V to 5.5V Input Voltage Range.
  • 21V Over-Voltage Protection.
  • 1.27MHz.

📥 Download Datasheet

Datasheet preview – LM3509

Datasheet Details

Part number LM3509
Manufacturer Texas Instruments
File Size 2.65 MB
Description High Efficiency Boost
Datasheet download datasheet LM3509 Datasheet
Additional preview pages of the LM3509 datasheet.

📁 Similar Datasheet

  • LM350 - Three-terminal Positive Voltage Regulator (Motorola)
  • LM350 - 3-Amp Adjustable Regulators (National Semiconductor)
  • LM350 - 3 Amp Positive Adjustable Regulator (Linear Technology)
  • LM350 - 3A Positive Voltage Regulator (onsemi)
  • LM350 - Three-terminal 3A adjustable voltage regulators (STMicroelectronics)
  • LM350 - 3-Terminal 3A Positive Adjustable Regulator (Fairchild Semiconductor)
  • LM3501 - Synchronous Step-up DC/DC Converter (National Semiconductor)
  • LM3502 - Step-Up Converter (National Semiconductor)
  • LM3503 - Dual-Display Constant Current LED Driver (National Semiconductor)
  • LM350A - 3-Amp Adjustable Regulators (National Semiconductor)
Other Datasheets by Texas Instruments
  • LM350 - 3-Amp Adjustable Regulator
  • LM350-N - 3-Amp Adjustable Regulator
  • LM3500 - Synchronous Step-up DC/DC Converter
  • LM3501 - Synchronous Step-up DC/DC Converter
  • LM3502 - Step-Up Converter
  • LM3503 - Dual-Display Constant Current LED Driver
  • LM3508 - Synchronous Magnetic Constant Current White LED Driver
  • LM350A - 3-Amp Adjustable Regulator

Full PDF Text Transcription

Click to expand full text
LM3509 www.ti.com SNVS495D – FEBRUARY 2007 – REVISED MAY 2013 LM3509 High Efficiency Boost for White LED's and/or OLED Displays with Dual Current Sinks and I2C Compatible Brightness Control Check for Samples: LM3509 FEATURES 1 •2 Integrated OLED Display Power Supply and LED Driver • Drives up to 10 LED’s at 30mA • Drives up to 5 LED’s at 20mA and Delivers up to 21V at 40mA • Over 90% Efficient • 32 Exponential Dimming Steps • 0.15% Accurate Current Matching Between Strings • Internal Soft-Start Limits Inrush Current • True Shutdown Isolation for LED’s • Wide 2.7V to 5.5V Input Voltage Range • 21V Over-Voltage Protection • 1.27MHz Fixed Frequency Operation • Low Profile 10-Pin WSON Package (3mm x 3mm x 0.
Published: |