iML8692A Phase-Cut Dimmable LED Current Controller

The iML8892CFA is an LED current controller with line regulation compensation for operating over a wide alternative current (AC) voltage source range and with active load controller for phase cut dimmable function. It can drive an extermal N-channel power MOSFET to regulate the current flowing through a high voltage (HV) LED string and provide the holding current for the phase cut dimmer. The application of the iML8692CFA is configured in series with an LED string. working as a constant current sink with over voltage protection (OVP). over temperature protection (OTP). and line regulation compensation. Active load function is included to improve the phase-cut dimming perfomance. It is suitable for applications with a rectified AC voltage source. The PCB layout is also very flexible to meet various shape requirerments. It is especially suitable for replacing incandescent light bulb and linear type fluorescent lamp.

▪ Device

- Active load current and LED string current control

from single device.

- Excellent system power regulation over AC line

variation range.

- 8V to 78V chip supply voltage range.

- Over temperature protection.

- Over voltage protection.

· System

- All solid state components available.

- 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.

- Active load for phase-cut dimming operation