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WS3240

Applications
LED lighting

Features
Built-in 650V UHV Power MOS
LED Constant Current: ±5%
Fixed Primary Peak Current: 185mA
Without the Secondary winding
Start up time less than 100ms
High precision constant current regulation due to patented CC control
Built-in line compensation
Ultra low operation current
Maximum power 4W
LED open/short protection
Floating pin protection
Excellent EMI performance with PFM control
Cycle-by-cycle current limit
Built-in leading Edge Blanking
VDD Under Voltage Lockout(UVLO)
Built-in over temperature protection

Structure Type

Part NO.

MOS

Package

App. Watt

OVP

PDF

176-264Vac

90-264Vac

Isolation

PF0.5

WS3240

0.6A/650V

TO-92

4W

3W

In-built

WS3240.pdf 

Description
WS3240 is a high precision primary side feedback constant current LED driver, suitable for flyback isolated LED in sub 4W power range at universal AC input. It operates in discontinuous current mode.
WS3240 integrates 650V power MOS. It operates in primary side sensing and regulation, without a secondary feedback circuit, also need not the auxiliary transformer winding detection and power supply, only need few peripheral components can realize constant current,greatly saves the cost and size of the system.
The start time of WS3240 is less than 100ms at universal AC input with the high voltage start technology,realizing instant bright of the LED lamp.
The current precision is less than ± 5% with high precision current sampling circuit and line compensation. With patented constant current controlling mode, excellent linear regulation is achieved.
WS3240 provides a variety of comprehensive protection mode, including: cycle by cycle current limit protection(OCP), LED open/short circuit protection, under voltage protection and clamping, over temperature protection, pin floating protection etc..
WS3240 is offered in TO-92 package.

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Money Return

100% Guarentee

Return Policy

30 Days Service

Solution & Support

Call +86-755-8418 2951