Posted in | News | LEDs

New LM3492 LED Driver from National Semiconductor

Provider of power management technology solutions, National Semiconductor has launched the new LM3492 LED driver with headroom control that efficiently and accurately drives the current to two LED dimmable strings. The LM3492 LED driver reduces the expense, decreases system complexity, and maximizes system efficiency in automotive LCD backlighting applications.

The dynamic headroom control (DHC) feature of the LED driver adjusts the LED supply voltage via the boost converter feedback, to offer highest possible system efficiency. The DHC also enables one bill of materials for various LEDs present in a string. This is needed for backlight panels of various sizes. Thus the DHC decreases the overall cost and development time. The three embedded MOSFETs decrease cost and system complexity.

The LM3492 combines a two-channel current regulator and a boost converter, to cost-effectively drive two dimmable LED strings with power of up to 15 W, and a maximum output voltage of 65 V. The integrated current regulators enable high frequency and thin pulse width dimming signals to attain 1000:1 contrast ratio. The LM3492 incorporates a COMM pin that acts as a bi-directional input/output pin interface featuring an external MCU for diagnostic and command functions.

Tell Us What You Think

Do you have a review, update or anything you would like to add to this news story?

Leave your feedback
Your comment type
Submit

While we only use edited and approved content for Azthena answers, it may on occasions provide incorrect responses. Please confirm any data provided with the related suppliers or authors. We do not provide medical advice, if you search for medical information you must always consult a medical professional before acting on any information provided.

Your questions, but not your email details will be shared with OpenAI and retained for 30 days in accordance with their privacy principles.

Please do not ask questions that use sensitive or confidential information.

Read the full Terms & Conditions.