DESCRIPTION

The MPQ7920 is a complete power management solution that integrates four highefficiency step-down DC/DC converters, five low-dropout regulators, and a flexible logic interface.

Constant-on-time (COT) control in the DC/DC converter provides fast transient response. The adjustable switching frequency (up to 2.75MHz) during CCM greatly reduces external inductor and capacitor value. Full protection features include UVLO, OCP, OVP, and thermal shutdown.

The output voltage is adjustable through the I2C bus or preset by the MTP (multiple-time programmable). The power-on/off sequence is also programmable via the MTP and can be controlled through I2C bus online.

The MPQ7920 requires a minimal number of external components, and is available in a space-saving QFN-26 (3.5mmx4.5mm) package with wettable flanks. This part is AEC-Q100 qualified.

FEATURES

 High-Efficiency Step-Down Converters

o Buck 1: 4.5A DC/DC Converter

o Buck 2: 2.5A DC/DC Converter

o Buck 3: 4.5A DC/DC Converter

o Buck 4: 2A DC/DC Converter

o Buck 1 and Buck 3 Can Work in Parallel

o Buck 2 and Buck 4 Can Work in Parallel

o 2.7V to 5.5V Operating Input Range

o 0.4V to 3.58V/12.5mV Step or 0.4V to 2.2V/7.4mV Step Option VOUT Range for Buck 1, Buck 2, and Buck 3

o 0.4V to 3.58V/12.5mV step VOUT Range for Buck 4

o Adjustable Switching Frequency

o Adjustable Soft-Start Time

o Adjustable Phase Delay

o Programmable Forced PWM, Auto-PFM, PWM Mode

o Output OCP, OVP

 Low-Dropout Regulators

o One RTC Dedicated LDO

o Four Low-Noise LDOs

o Two Separate Input Power Supplies

o 50mV Dropout at 300mA Load

 System

o I2C Bus and User Programmable MTP

o Two-Time Programmable MTP

o Power-On/Off Control

o Multi-Function LDO2/EN1 Pin (EN1 Input Logic Level ≤ 3.3V)

o Power-On Reset Output

o Flexible Power-On/Off Sequence via MTP (0.5ms/2ms/8ms/16ms Selectable Time Slot)

o Flexible DC/DC, LDO On/Off via the MTP

o ±4kV HBM and ±2kV CDM ESD Rating for All Pins

o Available in a QFN-26 (3.5mmx4.5mm) Package

o Available in AEC-Q100 Grade 1

APPLICATIONS

 Automotive Infotainment

 Automotive Video Recorder

 Automotive Display Electronics