MPQ4323-AEC1

MPQ4323-AEC1

42V Load Dump Tolerant, 3A, Ultra-Compact, Low I_Q, Synchronous Step-Down Converter, AEC-Q100 Qualified

Datasheet

Description

The MPQ4323 is a configurable-frequency (350kHz to 2.5MHz), synchronous, step-down switching converter with integrated, internal high-side and low-side power MOSFETs (HS-FET and LS-FET, respectively). It can achieve up to 3A of highly efficient output current (I_OUT) with peak current control mode.

The wide 3.3V to 36V input voltage (V_IN) range and 42V load dump tolerance accommodate a variety of step-down applications in automotive input environments. A 1μA shutdown current allows the device to be used in battery-powered applications.

High power conversion efficiency across a wide load range is achieved by scaling down the switching frequency (f_SW) under light-load conditions to reduce switching and gate driver losses.

An open-drain power good (PG) signal indicates whether the output is within 94.5% to 105.5% of its nominal voltage. Frequency foldback prevents inductor current runaway during start-up. Thermal shutdown provides reliable, fault-tolerant operation. A high duty cycle and low-dropout mode are provided for automotive cold-crank conditions.

The MPQ4323 is available in QFN-12 (2mmx3mm) and QFN-12 (3mmx4mm) packages.

Features & Benefits

Designed for Automotive Applications:
- Survives 42V Load Dump
- Supports 3.1V Cold Crank
- Up to 3A of Continuous Output Current (I_OUT)
- Continuous Operation Up to 36V
- -40°C to +150°C Operating Junction Temperature (T_J) Range
Increases Battery Life:
- 1μA Shutdown Current (I_SD)
- 20μA Quiescent Current (I_Q) Sleep Mode
- Advanced Asynchronous Modulation (AAM) Mode Increases Efficiency under Light Loads
High Performance for Improved Thermals:
- Integrated 70mΩ High-Side MOSFET (HS-FET) and 50mΩ Low-Side MOSFET (LS-FET)
- 65ns Minimum On Time (t_{ON_MIN}) and 50ns Minimum Off Time (t_{OFF_MIN})
Optimized for EMC/EMI Reduction:
- Frequency Spread Spectrum (FSS) Modulation
- Symmetric VIN Pinout
- CISPR25 Class 5 Compliant
- 350kHz to 2.5MHz Configurable Switching Frequency (f_SW)
- MeshConnect^TM Flip-Chip Package
Additional Features:
- Power Good (PG) Output
- Low-Dropout (LDO) Mode
- Over-Current Protection (OCP) with Hiccup Mode
- Available in a QFN-12 (2mmx3mm) Package or a QFN-12 (3mmx4mm) Package
- Available in a Wettable Flank Package
- Available in AEC-Q100 Grade 1

Active Part Numbers:

MPQ4323GDE-AEC1-Z MPQ4323GDE-AEC1-P MPQ4323GLE-AEC1-Z MPQ4323GLE-AEC1-P MPQ4323GDE-33-AEC1-Z MPQ4323GDE-33-AEC1-P MPQ4323GDE-38-AEC1-Z MPQ4323GDE-38-AEC1-P

Meaning of P & Z

Related Products

EVQ4323-D-00A 36V, 3A, Low Quiescent Current, Synchronous Step-Down Converter Evaluation Board, AEC-Q100 Qualified

The EVQ4323-D-00A is an evaluation board for the MPQ4323, a configurable-frequency (350kHz to 2.5MHz), synchronous, step-down switching regulator with integrated internal high-side MOSFETs (HS-FETs) and low-side MOSFETs (LS-FETs).

The MPQ4323 provides 3A of highly efficient output current (I_OUT) with peak current mode control. The wide 3.3V to 36V input voltage (V_IN) range and 42V load dump tolerance accommodates a variety of step-down applications in automotive input environments.

A 1μA shutdown mode quiescent current (I_Q) allows the device to be used in battery-powered applications. High power conversion efficiency across a wide load range is achieved by scaling down the switching frequency (f_SW) under light-load conditions to reduce the switching and gate driving losses. An open-drain power good (PG) signal indicates that the output is within 94.5% to 105.5% of its nominal voltage. Frequency foldback helps prevent inductor current runaway during start-up. Thermal shutdown provides reliable, fault-tolerant operation. A high duty cycle and low-dropout mode are provided for automotive cold-crank conditions.

The EVQ4323-D-00A is fully assembled and tested. The MPQ4323 is available in a QFN-12 (2mmx3mm) package with wettable flanks.

MP4323GDE

42V Load Dump Tolerant, 3A, Ultra-Compact, Low Quiescent Current, Synchronous Step-Down Converter