WT7712
| 【 General Description 】 | |
| The WT7712 is a primary-side-control offline LED lighting controller that achieves high power factor and accurate LED current for isolated single-power-stage lighting applications. The proprietary real current control method accurately controls LED current from primary-side information. Eliminating the secondary-side feedback components and the opto-coupler significantly simplifies the LED lighting system design. | |
| WT7712 integrates power factor correction and works in boundary conduction mode to reduce the MOSFET switching losses. The low start-up current and quiescent current reduces the total power consumption and provides a high-efficiency solution for lighting applications. The multi-protection features of WT7712 greatly enhance system reliability and safety. It also provides a quick way to generate the necessary primary bias supply at start-up. | |
| 【 Features 】 | |
| ● | Real current control without secondary-feedback circuit |
| ● | High power factor>=0.9 over universal input voltage |
| ● | Boundary conduction mode improves efficiency |
| ● | Input UVLO |
| ● | Cycle-by-cycle current limit |
| ● | Over-voltage protection |
| ● | Over-temperature protection |
| ● | Short circuit protection |
| ● | Fast start-up (MSOP10) |
| ● | Package |
| MSOP 10-pin、SOP 8-pin | |
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