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LM3532 - High-Efficiency White LED Driver

Description

The LM3532 is a 500-kHz fixed frequency asynchronous boost converter which provides the power for 3 high-voltage, low-side current sinks.

The device is programmable over an I2C-compatible interface and has independent current control for all three channels.

Features

  • 1 Drives up to 3 Parallel High-Voltage LED Strings at 40 V Each With up to 90% Efficiency.
  • 0.4% Typical Current Matching Between Strings.
  • 256 Level Logarithmic and Linear Brightness Control With 14-Bit Equivalent Dimming.
  • I2C-Compatible Interface.
  • Direct Read Back of Ambient Light Sensor Via 8-bit ADC.
  • Programmable Dual Ambient Light Sensor Inputs With Internal Sensor Gain Selection.
  • Dual External PWM Inputs for LED Brightness Adjust.

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Other Datasheets by Texas Instruments

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LM3530 High-Efficiency White-LED Driver
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Full PDF Text Transcription

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Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM3532 SNVS653E – JULY 2011 – REVISED AUGUST 2015 LM3532 High-Efficiency White LED Driver With Programmable Ambient Light Sensing Capability and I2C-Compatible Interface 1 Features •1 Drives up to 3 Parallel High-Voltage LED Strings at 40 V Each With up to 90% Efficiency • 0.
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