General Description

The iML8673 is a two step LED current controller with line regulation compensation for operating over a wide alternative current (AC) voltage source range. It can drive an external N-channel power MOSFET to regulate the current flowing through a high voltage (HV) LED string.

The iML8673 works as a constant current sink with linear type over voltage protection (OVP), linear type over temperature protection (OTP), and line regulation compensation. It is suitable for applications with a rectified AC voltage source.

The PCB design can be very compact to meet various shape requirements. It is especially suitable for replacing incandescent light bulb and linear type fluorescent lamps.

Features

Device

- Two current step control from single device.

- Excellent system power regulation over AC line variation range.

- 6V to 78V chip supply voltage range.

- Over temperature protection.

- Over voltage protection.

- DFN-2x2-6L package.

System

- Single board LED lighting solution available.

- All solid state components.

- No electrolytic capacitor or MOV required.

- Scalable architecture allows optimization of performance vs. cost.

- Driver-on-board and chip-on-board design solution available which minimize process flow and assembly cost.

- High PF and Low THD performance.

- Flexible PCB layout options.

- TRIAC dimmable.

Applications

A series LED bulbs

Candelabra LED bulbs

LED down lights

LED ceiling lamps

AC LED lighting engines

Ordering Information