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WS9931 Datasheet Preview

WS9931 Datasheet

LED Ripple Current Elimination Controller

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WS9931 Product Description
Features
Eliminate ripple current for single stage LED driver
Without external COMP capacitor
Built-in soft-start
Max Output current is up to 300mA
Internal intelligent over temperature protection
Operating temperature range from -40to135
Applications
LED Tube Lights
LED Bulb Lights
LED Ripple Current Elimination Controller
Description
The WS9931 is an adaptive linear current regulator to
eliminate LED low frequency ripple current. It adopts an
adaptive control solution without additional circuit design.
It can realize the function of LED light non-filtering with
very few external components, so the system cost and
size are minimized. The WS9931 is mainly applied in bulb
lights and tube lights, especially suitable for COB (chip on
board) mode.
The operating temperature range of the WS9931 is
from -40to135.
The WS9931 is available in ESOP8 Package.
Typical Application Circuit
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
Copyright@Winsemi Microelectronics Co., Ltd., All right reserved.
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
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Winsemi

WS9931 Datasheet Preview

WS9931 Datasheet

LED Ripple Current Elimination Controller

No Preview Available !

WS9931 Product Description
Pin Configuration and Marking Information
The WS9931 is available in ESOP-8 Package. The top marking is shown as below:
WS9931EPProduct Code
AProduct Code
XInternal Code
BCYInternal Code for QC
YMXD/C
Pin DefinitionNote: the heat sink at the bottom is connected to Pin 5.
Name
Pin No.
Description
VCC
1
Power Supply
NC 2/3/4/6
NA
LEDN
5
The negative pin of LED series
GND
7/8
Ground Pin
Internal Block Diagram
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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Part Number WS9931
Description LED Ripple Current Elimination Controller
Maker Winsemi
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