LM3532 Datasheet High-Efficiency White LED Driver

Manufacturer: Texas Instruments

LM3532 high-efficiency white led driver by Texas Instruments - Datasheet Preview

Datasheet Details

Part number	LM3532
Manufacturer	Texas Instruments
File Size	1.10 MB
Description	High-Efficiency White LED Driver
Download	LM3532 Download (PDF)

General 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.

The adaptive current regulation method allows for different LED currents in each current sink thus allowing for a wide variety of backlight and keypad applications.

Overview

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.

Key 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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