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PT16751 - Multi-Topology Automotive Headlight LED Driver

Description

The PT16751 is a Headlight LED controller for automotive with high accuracy peak current mode.

The device implements a fixed-frequency peak current mode control technique with programmable switching frequency, slope compensation, and soft-start timing.

Features

  • Automotive AEC-Q100, Grade 1 (-40℃~+125℃) Qualified.
  • Input Voltage: 4.5 V to 65 V.
  • Output Voltage Range: 3 V to 65 V.
  • Low Input Offset Rail-to-Rail Current Sense Amplifier.
  • Better than ±4% LED Current Accuracy over 25°C to 140°C Junction Temperature Range.
  • High-Side Current Sense Implementations.
  • High-Impedance Analog LED Current Adjust Input (IADJ) With over 15:1 Contrast Ratio.
  • Additional Analog LED Current Dimming 2 (IADJ2) for LED Lights over.

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Datasheet preview – PT16751

Datasheet Details

Part number PT16751
Manufacturer PTC
File Size 2.33 MB
Description Multi-Topology Automotive Headlight LED Driver
Datasheet download datasheet PT16751 Datasheet
Additional preview pages of the PT16751 datasheet.

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Full PDF Text Transcription

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PT16751 Multi-Topology Automotive Headlight LED Driver DESCRIPTION The PT16751 is a Headlight LED controller for automotive with high accuracy peak current mode. The device implements a fixed-frequency peak current mode control technique with programmable switching frequency, slope compensation, and soft-start timing. The controller is designed to support a range of step-up or step-down driver topologies. It incorporates a high voltage (65V) rail-to-rail current sense amplifier that can directly measure LED current using a high-side series sense resistor. The amplifier is designed to achieve low input offset voltage and attain better than ±4% LED current accuracy over junction temperature range of 25°C to 140°C and output common-mode voltage range of 3V to 60V.
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