WT7239
| 【 General Description 】 | |
| The WT7239 is a high efficiency DC-DC controller capable of driving up to 4 constant current outputs. A built-in step-up converter automatically adjusts the supply voltage level for LED strings. The controller can receive either an analog signal or a Pulse Width Modulation (PWM) signal for the dimming control function. | |
| The IC provides the user with over/under voltage protection, over temperature protection and over current protection features. The IC has high accurate current drivers with a minimized current mismatch among LED strings. | |
| 【 Features 】 | |
| ● | Supply voltage from 4.5V to 32V |
| ● | Auto setting the step-up controller regulates output just above the highest LED string voltage |
| ● | ±1.5％ typical regulates string current accuracy. |
| ● | Output current set by an external resistor (range: 50 to 240mA per channel) |
| ● | Programmable Switching Frequency |
| ● | Soft start eliminates inrush current |
| ● | LED open/short protection |
| ● | Over-Temperature protection |
| ● | Over-Voltage protection |
| ● | Under-Voltage protection |
| ● | Over Current protection |
| ● | Low Standby Current |
| ● | Package type : |
| 16-pin SOP, Green package | |
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