LED Driver
WT7232
【 General Description 】 | |
The WT7232 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 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 】 | |
● | Input voltage from 4.2V to 28V |
● | Build in Internal Power MOSFET |
● | 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 60mA per channel) |
● | Soft start eliminates inrush current |
● | LED open/short protection |
● | Over-Temperature protection |
● | Over-Voltage protection |
● | Over Current protection |
● | Under-Voltage protection |
● | Low Standby Current |
【 Package type 】 | |
● | 24-pin QFN with exposed pad, Green package |
● | 24-pin TSSOP with exposed pad, Green package |