Microchip HV9961NG-G HV9961NG-G LED Driver Buck (Step Down) 8V to 450V Input 1 Output NSOIC-16

The HV9961NG-G is an average current mode control LED Driver IC operating in a constant OFF-time mode. Unlike HV9910B, this control IC does not produce a peak-to-average error and therefore greatly improves accuracy, line and load regulation of the LED current without any need for loop compensation or high-side current sensing. The output LED current accuracy is ±3%. The IC is equipped with a current limit comparator for hiccup-mode output short circuit protection. The HV9961 can be powered from an 8 to 450V supply. A PWM dimming input is provided that accepts an external control TTL compatible signal. The output current can be programmed by an internal 275mV reference or controlled externally through a 0 to 1.5V dimming input. HV9961 is pin-to-pin compatible with HV9910B and it can be used as a drop-in replacement for many applications to improve the LED current accuracy and regulation.

• Fast average current control
• Programmable constant OFF-time switching
• Linear dimming input
• PWM dimming input
• Output short circuit protection with skip mode
• Pin-compatible with the HV9910B

Applications

Communications & Networking, Aerospace, Defence, Military, Sensing & Instrumentation, Test & Measurement, Avionics

Warnings Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

Other details

Brand	MICROCHIP
Part Number	HV9961NG-G
Quantity	Each
Technical Data Sheet EN
Product Change Notice EN

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