- MPQ4317-AEC1
MPQ4317-AEC1
45V, 7A, Low IQ, Synchronous Step-Down Converter with Frequency Spread Spectrum, AEC-Q100 Qualified
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Description
The MPQ4317 is a configurable-frequency, synchronous, step-down switching converter with integrated internal high-side and low-side power MOSFETs. It provides up to 7A of highly efficient output current (IOUT) with current mode control for fast loop response.
The wide 3.3V to 45V input voltage (VIN) range accommodates a variety of step-down applications in automotive input environments. A 1.7μA shutdown mode quiescent 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 (fSW) under light-load conditions to reduce switching and gate driver losses.
An open-drain power good (PG) signal indicates whether the output is within 95% to 105% of its nominal voltage. Frequency foldback helps prevent inductor current (IL) runaway during start-up. Thermal shutdown provides reliable, fault-tolerant operation. High duty cycle and low-dropout mode are provided for automotive cold-crank conditions.
The MPQ4317 is available in a QFN-20 (4mmx4mm) package.
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Features & Benefits
- Wide 3.3V to 45V Operating Input Voltage (VIN) Range
- 7A Continuous Output Current (IOUT)
- 1.7μA Low Shutdown Supply Current
- 18μA Sleep Mode Quiescent Current (IQ)
- Internal 48mΩ High-Side MOSFET (HS-FET) and 20mΩ Low-Side MOSFET (LS-FET)
- 350kHz to 1000kHz Configurable Switching Frequency (fSW) for Car Battery Applications
- Can Be Synchronized to an External Clock
- Out-of-Phase Synchronized Clock Output
- Fixed Output Options: 3.3V, 5V
- Frequency Spread Spectrum (FSS) for Low EMI
- Symmetric VIN for Low EMI
- Power Good (PG) Output
- External Soft Start (SS)
- 100ns Minimum On Time
- Selectable Advanced Asynchronous Modulation (AAM) Mode or Forced Continuous Conduction Mode (FCCM)
- Low-Dropout Mode
- Over-Current Protection (OCP) with Hiccup Mode
- Available in a QFN-20 (4mmx4mm) Package
- Available in a Wettable Flank Package
- Available in AEC-Q100 Grade 1

Active Part Numbers:
MPQ4317GRE-AEC1-Z MPQ4317GRE-AEC1-P MPQ4317GRE-33-AEC1-Z MPQ4317GRE-33-AEC1-P MPQ4317GRE-5-AEC1-Z MPQ4317GRE-5-AEC1-P
Part numbers ending in P and Z are the same parts. P and Z only indicates reel size.
Meaning of P & Z
MPQ4317-AEC1 Resources
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APPLICATION
HEAD UNITS (HIGH-END)APPLICATIONAutomotive head unit designs have evolved from the traditional hardware interfaces into sophisticated infotainment systems that offer various in-cabin functionalities. These features include navigation, wireless connections, passenger entertainment, gesture recognition, and voice control. As consumer expectations for infotainment features continue to increase, manufacturers face design challenges ...
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