Murata and Peregrine have been quick on their feet with integrating products from the recent acquisition of Arctic Sand (see Murata acquires Arctic Sand for new power tech. Within days of announcing the acquisition, Peregrine has launched the first of Arctic Sand's products: the ARC3C family of LED driver ICs.

Claiming the product line uses a disruptive — definitely patented — technology, the product line is targeting the ultra-high-definition (UHD) LCD displays market for notebook computers, Ultrabooks and 2-in-1 convertibles.

Tech advantages courtesy Arctic Sand

The company said the product line delivers dramatic improvements in power conversion efficiency, while achieving the lowest height profile and smallest footprint in the industry. Rated at up to 10W output power, the ARC3C products can save up to 1W of power in the LED boost circuit.

Peregrine went so far as to claim that this could improve battery runtime for a notebook computer by typically 1 hr.

Arctic Sand ICs feature a patented “staged-pipeline” architecture that reduces dependence on inductance, inherently lowers EMI and ripple and uniquely enables ultra-low profile solutions with industry-leading power conversion efficiency – all music to anyone designing mobile devices.

Arctic Sand’s boost architecture delivers LED efficiency levels of >94% peak at up to 45V output and with an input voltage range up to 15V.

Stephen Allen, director of strategic marketing at Peregrine Semiconductor, claimed, "Major OEMs have confirmed that Arctic Sand’s LED boost is the key to achieving these goals. In many customer benchmark tests, the ARC3C products have demonstrated a typical halving of losses compared with best-in-class competition. With Arctic Sand’s patented architecture, our efficiency advantage increases as platform profiles reduce."

More specs

The ARC3C LED drivers have up to 8 integrated programmable current sinks, integrate all MOSFETs, control and driver circuitry and feature dimming options within a 4x4mm QFN package. The product family is designed for 2-cell or 3-cell input voltages, with product variants suited up to 8-string LED arrays sinking current up to more than 40mA per string.

The dimming capability includes linear, logarithmic, analog, PWM, mixed-mode dimming or direct PWM dimming with up to 15bit dimming resolution.

The ICs feature extensive fault protection including over-current, output over-voltage and under-voltage protection, LED open and uniquely short circuit protection. An I²C 6.0-compatible serial interface operating at up to 1MHz is included with settings stored in on-board non-volatile memory.

The first three products in the family — the ARC3C0845, ARC3C0640 and ARC3C0445 LED drivers — will sample in May 2017.