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Constant Current Controller For Non-isolated Buck LED Driver Features � Inductor Current Critical Mode, No Need to Compensate the Inductance Variation � Source Driver Structure, Not Need the Auxiliary Winding for VCC � ±3% LED Current Accuracy � Up to 93% System Efficiency � LED Short Circuit Protection � Current Sense Resistor Short Circuit Protection � O.
� Inductor Current Critical Mode, No Need to Compensate the Inductance Variation
� Source Driver Structure, Not Need the Auxiliary Winding for VCC
� ±3% LED Current Accuracy
� Up to 93% System Efficiency
� LED Short Circuit Protection
� Current Sense Resistor Short Circuit Protection
� Over Temperature Protection
� Programmable LED open protection
Applications
� LED Bulb
� LED Candle light
� LED Spot light
� Decorative LED lighting
General Description
The WS3440 is a high precision constant current controller， designed for non-isolated buck LED driver. suitable for AC input voltage range (84V.
| No. | Partie # | Fabricant | Description | Fiche Technique |
|---|---|---|---|---|
| 1 | WS3441 |
WINSEMI |
Non-isolated Buck Offline LED Driver |
|
| 2 | WS3441A |
WINSEMI |
Non-isolated Buck Offline LED Driver |
|
| 3 | WS3442 |
WINSEMI |
Non-isolated Buck APFC Offline LED Driver |
|
| 4 | WS3442A |
WINSEMI |
Non-isolated Buck Offline LED Driver |
|
| 5 | WS3443 |
WINSEMI |
Non-isolated Buck Offline LED Driver |
|
| 6 | WS34063AD |
Wing Shing Computer Components |
DC TO DC CONVERTOR CONTROLLER |
|
| 7 | WS34063AP |
Wing Shing Computer Components |
DC TO DC CONVERTOR CONTROLLER |
|
| 8 | WS3410 |
WINSEMI |
Active PFC Non-isolated Buck LED Driver |
|
| 9 | WS3411 |
WINSEMI |
Active PFC Non-isolated Buck LED Driver |
|
| 10 | WS3411H |
WINSEMI |
Non-isolated Buck APFC Offline LED Driver |
|
| 11 | WS3412 |
WINSEMI |
Active PFC Non-isolated Buck LED Driver |
|
| 12 | WS3412AH |
WINSEMI |
Non-isolated Buck APFC Offline LED Driver |
|