MPQ76400FS-AEC1

The MPQ76400FS-AEC1 is an LED matrix manager with 16 integrated switches in series, which allow for individual LED pixel control in dynamic adaptive lighting applications. The MPQ76400FS-AEC1 provides a highly integrated solution for large arrays of high-power LEDs in automotive headlights.

The device integrates four sub-strings of four series-connected switches to bypass individual LEDs to achieve multiple current sources. A universal asynchronous receiver transmitter (UART) interface supports a communication baud rate up to 2Mbps, allowing for high-density data payload transfers via an external master microcontroller unit (MCU).

An internal charge pump powers the LED bypass switch gate drivers. To minimize EMI, frequency spread spectrum (FSS) is provided by the 16MHz oscillator used for the charge pump.

Low on resistance (R_DS(ON)) switches minimize conduction loss and power dissipation. The switch turn-on and turn-off times can be configured for each individual LED in the string. The pulse-width modulation (PWM) frequency and duty cycles can be adjusted via the UART interface's internal registers.

The internal multi-page one-time programmable (MOTP) memory can store default system settings, as well as calibration and lighting module data. For all switches, an integrated 8-bit analog-to-digital converter (ADC) monitors the LED voltage (V_LED), current, and junction temperature (T_J), then logs the data into the internal registers. These diagnostics can be read back with an MCU through the UART interface. The ADC also samples dedicated inputs (ADC1/ADC2) for system temperature compensation (NTC) and LED binning.

The MPQ76400FS-AEC1 features LED open/short portection, thermal shutdown protection, and a fault-reporting register through the UART interface.

The MPQ76400FS-AEC1 is available in a TQFP-48 (7mmx7mm) package with an exposed cooling pad to yield excellent power dissipation and thermal performance, and it is available in AEC-Q100 Grade 1.