General Description

The ICNE2531 is an LED current regulator 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 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.

Features

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 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.

-  Active load for phase-cut dimming operation

Applications

A series LED bulbs

Candelabra LED bulbs

LED light tube

AC LED lighting engines

Ordering Information