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PDF WS9931 Data sheet ( Hoja de datos )

Número de pieza WS9931
Descripción LED Ripple Current Elimination Controller
Fabricantes Winsemi 
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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
0319

1 page




WS9931 pdf
WS9931 Product Description
Package Information
ESOP8 Package Outline Dimensions
Symbol
A
A1
A2
b
c
D
D1
E
E1
E2
e
L
θ
Dimensions in Millimeters
Min Max
1.350
1.750
0.050
0.150
1.350
1.550
0.330
0.510
0.170
0.250
4.700
5.100
3.202
3.402
3.800
4.000
5.800
6.200
2.313
2.513
1.270(BSC)
0.400
1.270
0° 8°
Winsemi
Dimensions in Inches
Min Max
0.053
0.069
0.004
0.010
0.053
0.061
0.013
0.020
0.006
0.010
0.185
0.200
0.126
0.134
0.150
0.157
0.228
0.244
0.091
0.099
0.050(BSC)
0.016
0.050
0° 8°
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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