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LM3537 - 8-Channel WLED Driver

General Description

The LM3537 is a highly integrated LED driver capable of driving 8 LEDs in parallel for single display backlighting applications.

Independent LED control allows for a subset of the main display LEDs to be selected for partial illumination applications.

Key Features

  • 1 2Lighting:.
  • 8-channel Backlight Capability.
  • Internal ALS Engine; PWM Input to Support CABC.
  • Built-In Power Supply and Gain Control for Ambient Light Sensor.
  • Up to 90% Efficiency.
  • Adaptive Charge Pump with 1x and 1.5x Ggains for Maximum Efficiency.
  • 128 Dimming Steps for Group A, Exponential or Linear Dimming Selectable by Register Setup.
  • 8 Linear Dimming States for Group B LDOs:.
  • 4 Programmable LDOs (300 mA/150 mA Output Cu.

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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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LM3537 www.ti.com SNVS634B – JUNE 2011 – REVISED MAY 2013 LM3537 8-Channel WLED Driver with Four Integrated LDOs Check for Samples: LM3537 FEATURES 1 2Lighting: • 8-channel Backlight Capability • Internal ALS Engine; PWM Input to Support CABC • Built-In Power Supply and Gain Control for Ambient Light Sensor • Up to 90% Efficiency • Adaptive Charge Pump with 1x and 1.5x Ggains for Maximum Efficiency • 128 Dimming Steps for Group A, Exponential or Linear Dimming Selectable by Register Setup • 8 Linear Dimming States for Group B LDOs: • 4 Programmable LDOs (300 mA/150 mA Output Currents) • Default Startup Voltage States • Low Dropout Voltage: 100 mV typ. at 150 mA Load Current • LDO Input Voltage = 1.