WT7234
| 【 General Description 】 | |
| The WT7234 is a high efficiency DC-DC controller capable of driving up to 8 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 an 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 7V to 28V |
| ● | Auto setting the step-up controller regulates output just above the highest LED string voltage |
| ● | ±1.5％ regulates string current accuracy and ±3％ between ICs |
| ● | Output current set by an external resistor (range: 15 to 65mA per channel) |
| ● | Soft start eliminates inrush current |
| ● | LED open/short protection |
| ● | Over-Temperature protection |
| ● | Over-Voltage protection |
| ● | Under-Voltage protection |
| ● | Low Standby Current |
| 【 Package type 】 | |
| ● | 24-pin TSSOP with exposed pad, Green package |
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