Document
XC9401 Series is Discontinued.
XC9401 Series
Off-line Controllers for LED Lighting
ETR32009-001a
■GENERAL DESCRIPTION
The XC9401 series are off-line controller ICs for LED lighting. Through optimization of the external components, these ICs can be made to operate in a range from 85VAC to 270VAC, as well as by DC input, and a diversity of specifications can be achieved by selecting components appropriate for the circuit configuration. Fixed off-time control is used for the basic control method, and by detecting the current that flows to the external power MOSFET, the current that flows to the LED is monitored to provide a stable power supply for LED lighting. Three product series differing by function type are available, the XC9401A type, XC9401B type and the XC9401C type.
The circuit configuration of type A is designed for the power factor, achieving a high power factor by synchronizing the LED current to the input current (sine wave).
Type B and C holds the peak current due to switching that flows to the external power MOSFET constant, enabling the LED current to be kept constant.
With the type C, dimming is possible by inputting a PWM signal into the EN/DIM pin to set the LED current within a range of 1% to 100%.
■APPLICATIONS
●LED bulb (GU-10, MR-16, Other) ●LED tube lights ●LED down lights ●LED spot lights ●LED stands
■TYPICAL APPLICATION CIRCUITS
(XC9401C60CSR-G Non-isolation buck Type)
L1
100VAC /220VAC
C1
BR1
■FEATURES
Operating Voltage
: 85VAC ~ 270VAC
DC Input
RVDD
+C2
D1
CLED
LED
CVDD
ZD1
ISEN Voltage Fixed Off-time Protection Circuits
: 0.34V ±2.5% (Type C) : 6.0μs : Thermal Shutdown 150oC (TYP.)
VDD GATE
RGATE
L2 Q1
Dimming
VDD Over voltage protection, VDD=18V (TYP.) UVLO, VDD=6.5V (TYP.) Over current protection, VISEN=0.7V (TYP.) : PWM Dimming (LED Current:1%~100%@1kHz, Type C)
EN/DIM
ISEN
GND
RSEN
◆PaCcMkaOgeSs
: SOT-26 (Type A, Type B) SOT-25 (Type C)
Operating Ambient Temperature
◆EnHviriognhmel ntally Friendly
: -40oC ~ +85oC : EU RoHS Compliant, Pb Free
■SOLUTION EXAMPLES
Input Voltage
Product
Isolation/ Non-Isolation
Topology
Output Power
Reference designs
LED Voltage/
Efficiency/
LED Current
Power Factor
100VAC/110VAC
XC9401C60CSR-G
Non-Isolation
Buck
7.2W
60V/120mA
91%/0.5~0.65
220VAC/240VAC
XC9401C60CSR-G XC9401C60CSR-G XC9401A605MR-G
Non-Isolation Isolation Isolation
Buck Flyback Flyback
7.2W 7.0W 7.2W
60V/120mA 19.2V/360mA 20V/360mA
85%/0.5~0.65 83%/0.5~0.65
82%/0.9~
400VDC
XC9401C60CSR-G
Non-Isolation
Buck
104W
200V/520mA
97%
15VDC
XC9401C60CSR-G
-
Buck
3.5W
9.6V/350mA
92%
12VAC
XC9401C60CSR-G
-
Buck
2.7W
9V/300mA
87%
*Due to dispersion of constant values of external components, the above values may be deviated. Please understand that the above are typical values. For details, refer to the XC9401 Series Application Notes.
Option -
With PFC circuit -
For MR16
1/24
XC9401Series
■BLOCK DIAGRAM
1) XC9401 Series, Type A
EN/DIM VSINE
GND
VREF (B.