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WS3220A 데이터시트 PDF




WINSEMI에서 제조한 전자 부품 WS3220A은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 WS3220A 자료 제공

부품번호 WS3220A 기능
기능 High Precision PSR Constant Current LED Driver
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WS3220A 데이터시트, 핀배열, 회로
WS3220A Product Description
WS3220A High Precision PSR Constant Current LED Driver
Features
■ Built-in 650V Power MOSFET
■ ±5% LED Current Accuracy
■ Primary-side Sensing and Regulation Without TL431
and Opto-coupler
■ No Auxiliary Winding For Sensing And Supplying
■ Ultra low operating current
■ LED Open/Short Circuit Protection
■ CS Resistor Short Circuit Protection
■ VCC Clamp & under voltage lockout( UVLO)
■ Over Temperature Protection
Applications
■ GU10 LED driver
■ LED spot light
■ Other LED lighting
General Description
WS3220A is a high precision primary-side feedback
and regulation controller for LED lighting, it operates in
constant current control mode and is designed to work in
inductor current discontinuous conduction mode and
especially suitable for flyback convertor under universal
input. The output power of system is recommended to less
than 5W.
WS3220A integrates 650V power MOSFET. Since adopting
primary sense and feedback control technology, the
secondary sense and feedback circuit is eliminated. And it
does not need the auxiliary winding for sensing the output
current and supplying the chip. The low component counts
and small system size are realized.
Since using the high accurate current sense method,
WS3220A realizes ±5% accuracy of LED current along with
excellent line and load regulation.
WS3220A offers comprehensive protection including
Cycle-by-Cycle current limiting (OCP), LED open/short circuit
protection, CS resistor short circuit protection, VCC UVLO and
Clamp, and over temperature protection.
WS3220A is available in SOP8 package.
Typical Application Circuit
NP NS
AC
4 OUT
3 VCC
1 CS
2 GND
NC 8
NC 7
D ra in 6
D ra in 5
WIN SEM I M ICROELECTRON ICS
WIN SEM I M ICROELECTRON ICS
WIN SEM I M ICROELECTRON ICS
Copyright@Winsemi Microelectronics Co., Ltd., All right reserved.
WIN SEM I M ICROELECTRON ICS
W/T-S025-Rev.A/1 May.2014
WIN SEM I M ICROELECTRON ICS
1113




WS3220A pdf, 반도체, 판매, 대치품
WS3220A Product Description
Electrical Characteristics (TA=25VCC=14V, if not otherwise noted)
symbol
parameter
Test condition
Supply Voltage (VCC)
I_VCC_ST
Start up current
VCC=UVLO_ON-1V
I_OP
Operation Current
Fop=50Khz
UVLO_ON
Turn on threshold Voltage
VCC rising
UVLO_OFF
Turn-off threshold Voltage
VCC falling
VCC_Clamp VCC Clamp voltage
Icc=1mA
Current Sense Section
TLEB
Leading edge Blanking Time
VTH_OC
OCP threshold
Tdelay
Switch off delay time
Frequency Section
Fmin
Minimum operation frequency
Fmax
Maximum operation frequency
Maximum Duty Cycle
Dmax
Maximum duty cycle
MOSFET Section
Rds_on
Static drain-source on-resistance Vgs=10V/Ids=0.4A
BVdss
Drain-source breakdown voltage Vgs=0V/Ids=250uA
Idss
Drain-source leakage current
Vgs=0V/Vds=650V
Over Temperature Protection
Tsd Thermal shutdown threshold
Tsd_hys
Thermal shutdown hysteresis
Min Typ Max Unit
- 60
- 150
12.5 13.8
89
- 18.2
100 uA
250 uA
15.5 V
10 V
-V
- 500 - ns
485 500 515 mV
- 100 - ns
- 5 - Khz
- 90 - Khz
- 42 - %
- - 17 Ω
650 -
-V
- - 10 uA
- 150 -
- 25 -
WIN SEM I M ICROELECTRON ICS
WIN SEM I M ICROELECTRON ICS
WIN SEM I M ICROELECTRON ICS
www.winsemi.com Tel : +86-755-8250 6288 Fax : +86-755-8250 6299
WIN SEM I M ICROELECTRON ICS
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WS3220A 전자부품, 판매, 대치품
WS3220A Product Description
system stops switching immediately.
After the system enters into fault latch condition, the VCC
voltage will fall until it reaches UVLO threshold. Then the
system will re-start again. If the fault condition is removed,
the system will recover to normal operation.
The thermal shutdown circuitry in the WS3220A senses the
die temperature after start up, and the thermal protection
threshold is set to 150with a 25hysteresis. When the
temperature on die of WS3220A rises and reaches the
threshold, the power MOSFET will be shut down
immediately and maintained switch off until the temperature
on die falls 25from thermal protection trigger point.
WIN SEM I M ICROELECTRON ICS
WIN SEM I M ICROELECTRON ICS
WIN SEM I M ICROELECTRON ICS
www.winsemi.com Tel : +86-755-8250 6288 Fax : +86-755-8250 6299
WIN SEM I M ICROELECTRON ICS
WIN SEM I M ICROELECTRON ICS
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부품번호상세설명 및 기능제조사
WS3220A

High Precision PSR Constant Current LED Driver

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