LED Current Controller
with Line Regulation Compensation
XR46110 Product Brief
1/2
FEATURES
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
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
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
+
–
V
AC
BD
R2
R3
RG
R1
R
IN2
R
IN1
R
A2
R
B
R
A1
LEDS1
LEDS2
LEDS3
CS
NC
A
U1
XR46084
MS1
MS2
K
XR46110
U2
XR46084
Q1
XR46000
C
LR
VIN
VL
GND
GATE
NC
CS
U3
CS
NC
A
MS1
MS2
K
2
1
3
5
6
4
VIN
GND
GATE
CS
VL NC
Pin Configuration
2mm x 2mm TDFN-6
