Weltrend | Products

LED drivers

WT7238

The WT7238 is a capable of driving up to four high constant current outputs. The controller can be via I2C interface control the LED dimming function. The IC provides the user with over temperature protection and LED open/short function. The IC has high accurate current drivers with a minimized current mismatch among LED strings.

Features

- Supports I²C protocol dimming control
- Supports I²C Brightness control mode 256 step dimming control
- Output voltage from Input voltage to 60V
- 4-channel constant current output
- Auto setting the step-up controller regulates output just above the highest LED string voltage
- ±3％ regulates string current accuracy and ±6％ between ICs
- Output current set by an external resistor (range: 150 to 350mA per channel)
- LED open/short protection
- Over-Temperature protection
- Under-Voltage protection
- Low Standby Current
- Package type :16-pin SOP with exposed pad, Green package

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