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WS9256 Datasheet(PDF) 4 Page - Shenzhen Winsemi Microelectronics Co., Ltd

Part # WS9256
Description  High Precision PSR Constant Current LED Driver
PDF  8 Pages
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Manufacturer  WINSEMI [Shenzhen Winsemi Microelectronics Co., Ltd]
Direct Link  http://www.winsemi.com
Logo WINSEMI - Shenzhen Winsemi Microelectronics Co., Ltd

WS9256 Datasheet(HTML) 4 Page - Shenzhen Winsemi Microelectronics Co., Ltd

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WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
WS9256ProductDescription
www.winsemi.com Tel : +86-755-8250 6288
Fax : +86-755-8250 6299
4/8
Electrical Characteristics (Unless otherwise specified, VCC=8V and TA =25 ℃)
Symbol
Parameter
Test condition
Min
Typ
Max
Units
Supply Voltage Section
VDD_CLAMP
VDD Clamping Voltage
4mA
17.4
18.3
19.4
V
UVLO_on
VDD Power Supply
16.1
17.1
18.1
V
UVLO_off
VDD Under Voltage
Lockout
8.5
9
9 .5
V
VCC_OVP
VCCover voltage
protection level
17.9
18.9
19.9
V
Ist
Start up current
35
uA
Iop
Operating current
152
uA
Current Sense Section
Ipp
Primary Peak Current
484
508
531
mV
TLEB
Lead Edge Blanking
500
ns
TDELAY
Shutdown Delay
200
ns
D_max
Maximum Duty Cycle
42
%
FeedbackInputSection
Toff_max
MaximumDemagnetization
time
420
us
Toff_min
MinimumDemagnetizationt
ime
4
us
Ton_max
MaxmiumON time
100
us
Vfb
FB voltage sense level
1
V
Power MOSFET
Idss
Drain-source leakage
current
Vgs=0V,Vds=650V
10
uA
BVdss
Drain-source breakdown
voltage
650
V
Ron
Static drain-source
on-resistance
2.8
3.5
Ω
Over TemperatureProtection
T_comp
Thermal Regulation
Temperature
147
℃



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