Three Terminal Current Controller
XR46084 Product Brief
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FEATURES
System
All solid state components
No electrolytic capacitor required
Compact size to minimize mechanical
cost
Driver-on-board and chip-on-board
available which minimize process flow
and assembly cost
High PF and low THD performance
High efficiency achieved
Flexible PCB layout style
Wide range of LED forward voltage
selection
Distributed heat to several chips
TRIAC dimmable
Chip
88V input sustaining voltage
< 3V dropout voltage for up to 150mA
regulating current
APPLICATIONS
LED Lighting Applications
Downlight
High bay
Specialty
Architectural
Description
The XR46084 is a Three Terminal Current Controller (TTCC) for
regulating the current flowing through an LED string.
The application of the XR46084 is configured in parallel with an LED
string. The XR46084 can work as voltage controlled current source,
current regulator, or cut-off. It is suitable for the applications adopting
periodical AC voltage source.
The layout is very flexible allowing for PCB designs in any conceivable
shape. Whether high bay, downlights, or unique architectural shapes
the XR46084 can provide an excellent LED lighting solution.
Typical Application
+
–
120VAC
BD
R5
LEDS1
LEDS2
LEDS3
CS
NC
A
U1
XR46084-ADJ
MS1
MS2
K
U2
XR46084-ADJ
CS
NC
A
MS1
MS2
K
U3
XR46084-ADJ
CS
NC
A
MS1
MS2
K
ZD
Q1
XR46000
R4
ILED
U0
XR46084-ADJ
CS
NC
A
MS1
MS2
K
R3
R2
R1
R0
Figure 1. Typical Application Figure 2. Typical Performance
ILED
Rectified
VAC
t
t
XR46084 Product Brief
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© 2016 - 2017 MaxLinear, Inc. All rights reserved
XR46084_PB_100217 2/2
Corporate Headquarters:
5966 La Place Court
Suite 100
Carlsbad, CA 92008
Tel.:+1 (760) 692-0711
Fax: +1 (760) 444-8598
www.maxlinear.com
High Performance Analog:
1060 Rincon Circle
San Jose, CA 95131
Tel.: +1 (669) 265-6100
Fax: +1 (669) 265-6101
Email: LEDtechsupport@exar.com
www.exar.com
Ordering Information(1)
Part Number Regulating Current (mA) Operating
Temperature Range Lead-Free Package Packag Method
XR46084EHTR-C1(3) 40
-40°C ≤ TJ ≤ 150°C Yes(2) TDFN6 2x2 Reel
XR46084EHTR-C2(3) 66
XR46084EHTR-C3(3) 52
XR46084EHTR-D1(3) 80
XR46084EHTR-D2(3) 130
XR46084EHTR-D3(3) 104
XR46084EHTR-ADJ Determined by external
resistor only
XR46084ESFTR-C1(3) 40
-40°C ≤ TJ ≤ 150°C Yes(2) SOT-89-5 Reel
XR46084ESFTR-C2(3) 66
XR46084ESFTR-C3(3) 52
XR46084ESFTR-D1(3) 80
XR46084ESFTR-D2(3) 130
XR46084ESFTR-D3(3) 104
XR46084ESFTR-ADJ Determined by external
resistor only
XR46084ECF-C1(3) 40
-40°C ≤ TJ ≤ 150°C Yes(2) Dice Wafer
XR46084ECF-C2(3) 66
XR46084ECF-C3(3) 52
XR46084ECF-D1(3) 80
XR46084ECF-D2(3) 130
XR46084ECF-D3(3) 104
XR46084ECF-ADJ(3) Determined by
external resistor only
NOTE:
1. Refer to www.exar.com/XR46084 for most up-to-date Ordering Information.
2. Visit www.exar.com for more information.
3. Contact factory for availability.
Please contact LEDtechsupport@exar.com to request a complete datasheet.
