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LT3932 - 2A Synchronous Step-Down LED Driver

Description

The LT®3932 is a monolithic, synchronous, step-down DC/DC converter that utilizes fixed-frequency, peak current control and provides PWM dimming for a string of LEDs.

The LED current is programmed by an analog voltage or the duty cycle of pulses at the CTRL pin.

Features

  • nn ±1.5% LED Current Regulation nn ±1.2% Output Voltage Regulation nn 5000:1 PWM Dimming at 100Hz nn 128:1 Internal PWM Dimming nn Spread-Spectrum Frequency Modulation nn Silent Switcher® Architecture for Low EMI nn 3.6V to 36V Input Voltage Range nn 0V to 36V LED String Voltage nn 2A, 36V Internal Switches nn 200kHz to 2MHz with SYNC Function nn 99.9% Maximum Duty Cycle nn Analog or Duty Cycle LED Current Control nn Open/Short LED Protection and Fault Indication nn Accurate LED Current Sense wi.

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Full PDF Text Transcription

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FEATURES nn ±1.5% LED Current Regulation nn ±1.2% Output Voltage Regulation nn 5000:1 PWM Dimming at 100Hz nn 128:1 Internal PWM Dimming nn Spread-Spectrum Frequency Modulation nn Silent Switcher® Architecture for Low EMI nn 3.6V to 36V Input Voltage Range nn 0V to 36V LED String Voltage nn 2A, 36V Internal Switches nn 200kHz to 2MHz with SYNC Function nn 99.
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