LED Current Controller

with Line Regulation Compensation

XR

1/2

FEATURES

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Device

6V to 78V chip supply voltage range

Excellent system power regulation in

±10% AC mains fluctuation

Over temperature protection

Overvoltage protection

Single board LED lighting solution

available

2mm x 2mm TDFN-6L package

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System

All solid state components

No electrolytic capacitor 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

APPLICATIONS

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LED Lighting Applications

Downlight

High bay

Specialty

Architectural

Description

The XR46110 is an 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 application of the XR46110 is configured in series with an LED

string, working as a constant current sink with linear type overvoltage

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.

Typical Application

+

VAC

BD

R2

R3

RG

R1

RIN2

RIN1

RA2

RB

RA1

LEDS1

LEDS2

LEDS3

U1

XR46084

XR46110

U2

XR46084

Q1

XR46000

CLR

VIN

VL

GND

GATE

NC

CS

U3

2

1

3

5

6

4

VIN

GND

GATE

CS

VL

NC

Pin Configuration

2mm x 2mm TDFN-6