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PDF PT4209ESOH Data sheet ( Hoja de datos )
| Número de pieza | PT4209ESOH | |
| Descripción | Primary Side Offline LED Controller | |
| Fabricantes | PowTech | |
| Logotipo |  |
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PT4209
Primary Side Offline
LED Controller with Active PFC
GENERAL DESCRIPTION
The PT4209 is a flicker-free PWM/analog dimmable,
primary side constant current controller which can
achieve high power factor in a single stage converter,
targeted to applications in solid state lighting. It is
designed for the flyback topology, and regulates output
current accurately without the secondary feedback loop.
PT4209 works in quasi-resonant mode to reduce the
MOSFET switching loss. The device uses extremely
low startup and low quiescent current to achieve high
efficiency.
A complete set of integrated protection functions allows
the PT4209 to protect against all fault conditions such
as VCC under-voltage, VCC over-voltage, cycle by
cycle current limit, output open/short circuit, Rcs open
circuit, transformer winding short circuit and over
temperature shut down.
The PT4209 is available in SOP8 package.
FEATURES
Constant Current Control Without Secondary Feed
back
Flicker-free PWM/analog Dimming (10%-100%)
Accurate Constant Current Output
Quasi-Resonant Mode Operation
Ultra-low（10uA）Start Up Current
Low Quiescent Current (1mA)
VCC Under Voltage Protection
Over Voltage Protection by Voltage Holding
Cycle by Cycle Current Limit
Rcs Open Circuit Protection
Transformer Winding Short Circuit Protection
Output Open/Short Circuit Protection
Over Temperature Protection
APPLICATIONS
Solid State Lighting
Industrial and Commercial Lighting
Residential Lighting
ORDERING INFORMATION
PACKAGE
SOP-8
TEMPERATURE
ORDERING PART NUMBER
RANGE
-40℃ to 85℃
PT4209ESOH
TRANSPORT
MEDIA
3000/Tape and Reel
TYPICAL APPLICATION CIRCUIT
MARKING
PT4209
xxxxxX
AC
85~264V
Rst
R11
C1
R12
D1
R3
C3
R4
VCC
VINS
COMP
GND
DET
DIM
DRV
CS
R2 C2
D2
Rcs
D3
C4 R6
China Resources Powtech (shanghai) Co. Ltd
PT4209_DS Rev EN1.0
WWW.CRPOWTECH.COM
Page 1
1 page  
PT4209
Primary Side Offline
LED Controller with Active PFC
Typical Performance Characteristics
0.420
0.415
0.410
0.405
0.400
0.395
0.390
0.385
0.380
-40
-20
Vref vs. Temp
0 20 40 60 80 100 120
Temp(C)
Multiplier linearity
4.5
Vins=1
Vins=2
Vins=3
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
Vcomp(V)
PF vs. Vac Pout=15.4W(38V*0.4A)
1.00
0.99
0.98
0.97
0.96
0.95
60
80 100 120 140 160 180 200 220 240 260 280
Vac(Vrms)
305
304
303
302
301
300
299
-20
Iled vs. Temp Vac=230Vrms
0 20 40 60 80 100
Temp(C)
Iled vs. Vac
0.416
0.414
0.412
0.410
0.408
0.406
60 80 100 120 140 160 180 200 220 240 260 280
Vac(Vrms)
Efficiency vs. Vac Pout=15.4w(38V*0.4A)
90
88
86
84
82
80
78
76
74
72
70
60
80 100 120 140 160 180 200 220 240 260 280
Vac(Vrms)
China Resources Powtech (shanghai) Co. Ltd
PT4209_DS Rev EN1.0
WWW.CRPOWTECH.COM
Page 5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet PT4209ESOH.PDF ] | |
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