The MP3324 is an 8-channel white LED (WLED) driver that operates from a wide 4V to 16V input voltage (V_IN) range. The MP3324 applies eight internal current sources in each LED string terminal. The LED current (I_LED) of each channel is set by an external current-setting resistor. Each channel has a 100mA maximum current (while V_IN ≥ 4.5V).

The device integrates an I²C interface. There are ten different I²C addresses that can be configured via an external resistor. This means the MP3324 can support up to ten ICs that have been cascaded to drive an LED array. Each channel can be enabled or disabled via the I²C.

The MP3324 employs both separated pulse-width modulation (PWM) dimming and analog dimming for each LED channel, with a 12-bit PWM dimming resolution and 6-bit analog dimming per channel. The I_LED ramping rate and phase shift can be configured to reduce EMI and EMC.

The MP3324 can output a refresh signal from the RFSH/FLT pin. The refresh signal frequency (f_REFRESH) can be set via the I²C.

Full protections features include LED open-load protection (OLP), LED short-load protection (SLP), and over-temperature protection (OTP). The device also features fault indication. If a protection function is triggered, then the RFSH/FLT pin is pulled low, and the corresponding fault register is set.

The MP3324 is available in a QFN-24 (4mmx4mm) package.