XC9401_15 Datasheet, PDF (1/19 Pages) Torex Semiconductor – Off-line Controllers for LED Lighting

XC9401 Series
Off-line Controllers for LED Lighting
ETR3201-006
■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. Two product series differing by function type are available, the XC9401A
type and the XC9401B 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). In this circuit configuration, a high-capacity, high-withstand voltage electrolytic
capacitor is not necessary after the bridge rectifier circuit from the AC input. The input filter removes high frequency switching
noise from the AC line, allowing a small-capacity ceramic capacitor to be used.
Type B holds the peak current due to switching that flows to the external power MOSFET constant, enabling the LED
current to be kept constant. By keeping the LED current constant, this circuit configuration makes it possible to achieve a
stable light source with high efficiency.
■APPLICATIONS
■TYPICAL APPLICATION CIRCUITS
●LED lights ( <=10W )
●LED lamps
●LED tube lights
●LED spot lights
●LED stands
(XC9401B605MR-G 100VAC Non-isolation buck Type)
100VAC
/110VAC
L1
1mH
BR1
B4S
R5
33kΩ
■FEATURES
Operating Voltage :
V_DD Input Voltage Range :
Fixed Off-time
:
Protection Circuits _:
Dimming
:
85VAC ~ 270VAC
9V ~ 15V
6.0μs
Thermal Shutdown 150^oC (TYP.)
V_DD Over voltage protection, V_DD=18V (TYP.)
UVLO, V_DD=6.5V (TYP.)
Over current protection
V_ISEN=0.7V (TYP.)
PWM Dimming
C1
0.1μF/250V
+ C2
10μF/250V
NF
EN/DIM
R6
33kΩ
C3
10μF/25V
ZD1
12V
D1
RF071M2S
C4
1uF/100V
VDD
GATE
ISEN
GND
R7
20Ω
L2
3.3mH
Q1
IPD60R3K3C6
R3
R4
2.2Ω
JP
Package
: SOT-26
Operating
: -40^oC ~ +85^oC
Ambient Temperature
Environmentally Friendly : EU RoHS Compliant, Pb Free
LED
20Series/110mA
■SOLUTION EXAMPLES
Input Voltage
Product Type Isolation / Non-Isolation
100VAC / 110VAC XC9401B605MR
Non-Isolation
XC9401B605MR
220VAC / 240VAC
XC9401A605MR
Isolation
220VAC / 240VAC XC9401B605MR
Non-Isolation
Topology
Buck
Flyback
Buck
Efficiency
91%
83%
82%
87%
Power Factor
0.6
0.6
0.9
0.6
XC9401B605MR
-
DC / 12VAC
XC9401B605MR
-
Buck
88%
-
Buck-Boost
86%
-
*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.
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