The EV3309-QG-00A is designed for the MP3309, a WLED driver. The device has a 2.7V to 5.5V input voltage range and uses peak current mode control to regulate the LED current sensed through an external, low-side resistor. Synchronous rectification and the 200mV feedback voltage reduce power loss and PCB size. To save driver losses, select non-synchronous mode by using an internal register to disable the rectifier MOSFET.

The MP3309 features a configurable switching frequency to optimize efficiency. It supports both analog and PWM dimming. In addition, the MP3309 has LED open protection, cycle-by-cycle current limit protection, under-voltage protection (UVP), and thermal shutdown protection.

The I2C interface can set the protection indication bits and the over-voltage protection (OVP) threshold.

The MP3309 is available in a QFN-10 (1.4mmx1.8mm) package