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WS9221 Datasheet(PDF) 4 Page - List of Unclassifed Manufacturers

Part # WS9221
Description  High Precision PSR Constant Current LED Driver
PDF  8 Pages
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Manufacturer  ETC2 [List of Unclassifed Manufacturers]
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WS9221 Datasheet(HTML) 4 Page - List of Unclassifed Manufacturers

  WS9221 Datasheet HTML 1Page - List of Unclassifed Manufacturers WS9221 Datasheet HTML 2Page - List of Unclassifed Manufacturers WS9221 Datasheet HTML 3Page - List of Unclassifed Manufacturers WS9221 Datasheet HTML 4Page - List of Unclassifed Manufacturers WS9221 Datasheet HTML 5Page - List of Unclassifed Manufacturers WS9221 Datasheet HTML 6Page - List of Unclassifed Manufacturers WS9221 Datasheet HTML 7Page - List of Unclassifed Manufacturers WS9221 Datasheet HTML 8Page - List of Unclassifed Manufacturers  
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www.winsemi.com Tel : +86-755-8250 6288
Fax : +86-755-8250 6299
3/9
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
WS9221ProductDescription
Electrical Characteristics (Unless otherwise specified, VCC=8V and TA =25 ℃)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Supply Voltage Section
VCC_Clamp
VCC clamp voltage
1mA
7.3
7.9
8.5
V
VCC_ON
Turn on threshold voltage
VCC rising
6.7
7.4
8.0
V
V CC_UVLO
Turn off threshold voltage
VCC falling
5.1
V
IST
VCC startup current
VCC= VCC_ON - 1V
45
100
uA
IOP
VCCoperating current
Fop=50kHz
105
250
uA
Current Sense Section
VCS_TH
Threshold voltage for peak
current limit
485
500
515
mV
TLEB
Leading edge blanking time
for current sense
500
ns
TDELAY
Switch off delay time
100
ns
Switching Frequency
Fmax
Maximum working frequency
100
kHz
Max duty
Maximum duty cycle
42
%
Fmin
Minimum working frequency
3
kHz
Tons_mi
n
Mininum OFF time
4
us
Tons_O
VP
Output OVP Threshold Time
5.1
us
MOSFET Section
RDS_ON
Static drain-source
on-resistance
Vgs=14V/Ids=0.5A
13
16
Ω
BVDSS
Drain-source breakdown
voltage
Vgs=0V/Ids=250uA
650
V
IDSS
Drain-source leakage current
Vgs=0V/Vds=650V
10
uA
Over Temperature Protection
T_comp
Thermal Regulation
Temperature
140
℃



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