WS9822B Product Description
Electrical Characteristics
Conditions： TA=25℃，VCC=14V（Unless otherwise specified）
Symbol
Parameter
Test condition
Min
Typ
Max
Unit
Power Supply Section
VCC_CLAMP
VCC Clamp Voltage
VCC Clamp Current
Chip Startup Voltage
Under voltage
IVCC=1mA
16
5
V
mA
V
ICC_CLAMP
20
UVLO_OFF
VCC Rising
15.8
UVLO_ON _HYS
VCC Falling
3.5
V
Protection Hysteresis
Startup Current
IST
VCC=UVLO_off-0.5V
65
130
120
195
uA
uA
IOP
Operating Current
Current Detection Section
Threshold Voltage for Peak
VCS_TH
400
114
mV
mV
Current Limitation
Threshold Value for
Dimming Test
VCS_DIM
Leading Edge Blanking Time
for Current Sense
TLEB
350
200
ns
ns
TDELAY
Switch Off Delay Time
Switching Frequency Section
TOFF_MIN
TOFF_MAX
Minimum OFF Time
3
us
us
us
V
Maximum OFF Time
Maximum On Time
ROVP PIN Voltage
240
40
TON_MAX
VROVP
0.5
DIM Dimming Section
TRESET
Shutdown Reset Time
5
S
MOSFET Section
Power MOSFET Drain
Leakage Current
IDSS
VGS=0V,VDS=500V
10
uA
Drain-Source Breakdown
Voltage
BVDSS
500
V
Static Drain-source
On-state resistance
RDS_ON
4.8
6
Ω
Thermal section
Thermal Regulation
Temperature
TREG
150
℃
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
WINSEMI MICROELECTRONICS
www.winsemi.com
Tel : +86-755-8250 6288
Fax : +86-755-8250 6299
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