The EVQ3359C-LE-00A is an evaluation board designed to demonstrate the capabilities of the MPQ3359C-AEC1 and MP3359C, which are four-channel, step-up converters that drive white LED (WLED) arrays as backlighting for medium-sized LCD panels. 

Peak current control is used as the pulse-width modulation (PWM) control architecture to regulate the boost converter. Four-channel current sources are applied to the LED cathode to adjust LED brightness. This regulates the current in each LED string to the value set by an external current-setting resistor, with a 2.5% current regulation accuracy between strings. 

The MPQ3359C-AEC1 and MP3359C’s low headroom voltage improves efficiency and IC thermal performance. The switching frequency (f_SW) is configurable via a resistor or an external clock. 

The MPQ3359C-AEC1 and MP3359C provide analog and PWM dimming via the EN/ADIM and PDIM pins, respectively. The device also has a fixed delay time between LED current (I_LED) channels to eliminate noise during PWM dimming. 

Protection features include input over-current protection (OCP), over-voltage protection (OVP), over-temperature protection (OTP), LED string short protection, LED string open protection, output voltage (V_OUT) short-to-GND protection, and LEDx pin short-to-GND protection. 

The EVQ3359C-LE-00A is a fully assembled evaluation board. The MP3359C and MPQ3359C-AEC1 are available in a QFN-20 (3mmx4mm) package, and the MPQ3359C-AEC1 is available in AEC-Q100 Grade 1.