NCP1606ADR2G

The NCP1606ADR2G is an active power factor controller from On Semiconductor, specifically designed for use as a pre-converter in electronic ballasts, AC-DC adapters, and other medium-power off-line converters up to 300 W. It utilizes a Critical Conduction Mode (CRM) scheme to achieve unity power factor across a wide range of input voltages and power levels.

Key features include a high precision voltage reference (±1.6% over temperature ranges), very low startup current consumption (≤ 40 µA), and low typical operating current (2.1 mA). It also incorporates a -500 mA / +800 mA totem pole gate driver and undervoltage lockout with hysteresis. The device operates within a voltage range of 10.3V to 20V and has an operating temperature range of -40°C to 125°C.

This controller is housed in a standard 8-SOIC package, requiring surface mount technology. Its integration of comprehensive safety protection features, such as programmable overvoltage protection, protection against open loop, accurate and programmable on-time limitation, and overcurrent limitation, makes it suitable for rugged PFC stages. The NCP1606ADR2G is pin-to-pin compatible with industry standards, minimizing external component count and simplifying design.

Typical applications include electronic light ballasts, AC adapters, TVs, monitors, and all off-line appliances requiring power factor correction.