The ICNE2531 is an LED current regulator with line regulation compensation for operating over a wide altermative current (AC) voltage source range and with active load controller for phase cut dimmable function. It can 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 ICNE2531 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 performance, which will be disabled when the lamp is not connected to a dimmer. The PCB layout is also very flexible to meet various shape requirements. 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.

- Built-in 700V HV NMOS for active load current

regulator and 500V HV NMOS for LED current

regulator.

- Over temperature protection.

- Over voltage protection.

- Single board LED lighting solution available.

· System

- Scalable architecture allows optimization of

performanoe vs. cost.

- Driver-on-board and chip-on-board design

solution avallable which minimize process flow

and assembly cost.

- High PF and Low THD performance.

- Flexible PCB layout options.

- Active load for phase-cut dimming operation