WS9442 PDF даташит
Спецификация WS9442 изготовлена «Winsemi» и имеет функцию, называемую «Non-isolated Buck Offline LED Driver». |
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Детали детали
Номер произв | WS9442 |
Описание | Non-isolated Buck Offline LED Driver |
Производители | Winsemi |
логотип |
9 Pages
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WS9442 Product Description
Features
Critical Conduction Mode Operation
Internal 500V Power MOSFET
Gate Drive and No Auxiliary Winding
±3% LED Current Accuracy
Efficiency up to 93%
LED Short Circuit Protection
LED Open Circuit Protection
Current Sense Resistor Short Protection
Thermal Regulation Function
Applications
LED Bulb Lights
LED Panel Lights
LED Strings
Typical Application Circuit
Non-isolated Buck Offline LED Driver
Description
The WS9442 is a high precision buck constant current
LED driver and is applied to non-isolated buck LED power
system with AC input voltage of 85VAC-265VAC. The
WS9442 integrates a 500V power MOSFET, and can
achieve excellent constant current performance with very
few external components, so the system cost and size are
minimized. The driver operates in critical conduction mode,
and the output current does not change with the inductance
and LED output voltage. The operating current of the IC is
200uA, so it doesn’t need the auxiliary winding for supplying
the chip, thus simplifying design and reducing cost.
The WS9442 adopts intelligent temperature control and
thoroughly solves the problem of light flashing at high
temperatures. The WS9442P offers full protection functions
to improve the system reliability, including LED open circuit
protection, LED short circuit protection, CS resistor short
circuit protection and thermal regulation function.
The WS9442 is available in DIP-7 Package.
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
Copyright@Winsemi Microelectronics Co., Ltd., All right reserved.
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
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WS9442 Product Description
Pin Configuration and Marking Information
The WS9442 is available in DIP-7 Package. The top marking is shown as below:
WS9442D7P:Product Code
A:Product Code
X:Internal Code
BCY:Internal Code For QC
YMX:D/C
Pin Definition
Pin No.
1
2
3
4
5,6
7
Block Diagram
Name
GND
ROVP
NC
VCC
DRAIN
CS
Ground
Description
Over Voltage Protection Setting Pin. Connect a resistor to GND
No Connection.Should be hanged out.
Power Supply Pin
Internal HV Power MOSFET Drain
Current Sense Pin. Connect a sense resistor between this pin and GND
pin.
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
www.winsemi.com Tel : +86-755-8250 6288 Fax : +86-755-8250 6299
WINSEMI MICROELECTRONICS
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WS9442 Product Description
Ordering Information
Package
7-Pin DIP-7, Pb-free
Recommended Operation Conditions
Part Number
Package
WS9442D7P
DIP7
Marking
WS9442D7P
Input voltage
175VAC-264VAC
90VAC-264VAC
Part Number
WS9442D7P
Maximum output power
120V/280mA
160V/220mA
80V/300mA
Absolute Maximum Ratings
Symbol
Parameter
Range
Unit
VDS
Internal HV MOSFET drain voltage
-0.3~500
V
ICC_MAX
VCC pin maximum sink current
10 mA
VROVP
LED open circuit protection voltage regulation
-0.3~7
V
VCS
Current sense pin input voltage
-0.3~7
V
PDMAX
Power dissipation DIP7
0.9 W
TJ
Maximum operating junction temperature
150
℃
TSTG
Minimum/Maximum Storage temperature
-55~150
℃
Note:Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
www.winsemi.com Tel : +86-755-8250 6288 Fax : +86-755-8250 6299
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
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Номер в каталоге | Описание | Производители |
WS9441 | Non-isolated Buck Offline LED Driver | Winsemi |
WS9441P | Non-isolated Buck Offline LED Driver | Winsemi |
WS9442 | Non-isolated Buck Offline LED Driver | Winsemi |
WS9442P | Non-isolated Buck Offline LED Driver | Winsemi |
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