MP3384LGQ-Z

The MP3384L is a step-up converter to control up to 4 white LED strings for LCD backlighting. The MP3384L employs a fixed-switching frequency that can be selected from either 625kHz or 1.25MHz. It takes a 3V-to-25V input supply: The low-end input voltage allows the MP3384L to power a tablet display from a single battery. The MP3384L has 4 internal current sources to independently regulate the current in each LED string to a value set by an external, current-setting resistor. It achieves current balance within 2.5% regulation accuracy between strings. Its low 600mV regulation voltage for the LED current sources reduces power loss and improves efficiency. The MP3384L features multiple protections, including under-voltage lockout, MOSFET current limiting, over-voltage protection, open/short LED protection, and thermal shut-down. The MP3384L is available in a 3mm×3mm QFN16 package.

Highly Efficient 3V-to-25V Input Voltage Range 50V Maximum Step-Up Voltage Balanced Driver for 4 WLED Strings 2.5% Current Matching Accuracy Between Strings Selectable Switching Frequency: 625kHz or 1.25MHz PWM Dimming Programmable Over-Voltage Protection Under-Voltage Lockout Open and Short LED Protection Thermal Shutdown 3mm×3mm 16-pin QFN Package