Monolithic Power Systems (MPS) MPQ4316 Synchronous Step-Down Converters

Monolithic Power Systems (MPS) MPQ4316 Synchronous Step-Down Converters are frequency-configurable and step-down switching converters with integrated internal high-side and low-side power MOSFETs. These converters provide 6A of continuous output current (or lesser) with current mode control for fast loop response. The MPQ4316 synchronous step-down converters feature 100ns minimum on time, symmetric V_IN for low EMI, and internal 48mΩ high-side MOSFET and 20mΩ low-side MOSFET. These converters also feature a 1.7μA low-shutdown supply current, 18μA sleep mode quiescent current, out-of-phase synchronized clock output, and low-dropout mode.

The MPQ4316 synchronous step-down converters operate with fixed-frequency and peak current control to regulate the output voltage at moderate to high output currents. These converters operate in two conditions based on MODE pin under light-mode conditions. The MPQ4316 synchronous step-down converters are used in automotive infotainment, automotive clusters, industrial power systems, and advanced driver assistance systems.

Features

Wide 3.3V to 45V operating voltage range
6A of continuous output current
1.7μA low shutdown supply current
18μA sleep mode quiescent current
Internal 48mΩ high-side MOSFET and 20mΩ low-side MOSFET
350kHz to 1000kHz configurable switching frequency for car battery applications
Can be synchronized to an external clock
Out-of-phase synchronized clock output
3.3V and 5V fixed output options
Frequency Spread Spectrum (FSS) for low EMI
Symmetric V_IN for low EMI

Power Good (PG) output
External Soft Start (SS)
100ns minimum on time
Selectable Advanced Asynchronous Mode (AAM) or Forced Continuous Conduction Mode (FCCM)
Low-dropout mode
Hiccup Over-Current Protection (OCP)
Available in a QFN-20 (4mm x 4mm) package
Available in a wettable flank package
Available in AEC-Q100 grade 1