- MPQ4331-AEC1
MPQ4331-AEC1
36V, 0.5A to 1A, Low Quiescent Current, Synchronous Step-Down Converter, AEC-Q100 Qualified
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Description
The MPQ4331-AEC1 is a high-frequency, synchronous, step-down switching converter with integrated internal high-side and low-side power MOSFETs (HS-FET and LS-FET, respectively). The device provides 0.5A to 1A of highly efficient output current (IOUT) with peak current mode control.
The wide 3V to 36V input voltage (VIN) range and 42V load dump tolerance accommodate a variety of step-down applications in automotive input environments. A 1μA shutdown mode current (ISHDN) 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 voltage (VOUT) is within 94% to 106% of its nominal voltage.
Frequency foldback helps prevent inductor current (IL) runaway during start-up. Thermal shutdown provides reliable, fault-tolerant operation. A high duty cycle and low-dropout (LDO) mode are provided for automotive cold-crank conditions.
The MPQ4331-AEC1 is available in a space-saving TSOT23-8 package, and is available in AEC-Q100 Grade 1.
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Features & Benefits
- Designed for Automotive Applications:
- Survives 40V Load Dump
- Wide 3V to 36V Operating Input Voltage (VIN) Range
- Supports 3V Cold Crank
- 0.5A to 1A Continuous Output Current (IOUT) Version in Pin-Compatible Family
- 45ns Minimum On Time (tON_MIN) and 35ns Minimum Off Time (tOFF_MIN)
- -40°C to +150°C Operating Junction Temperature (TJ)
- Available in AEC-Q100 Grade 1
- Increases Battery Life:
- 1μA Shutdown Current (ISHDN)
- 20μA Sleep Mode Quiescent Current (IQ)
- Advanced Asynchronous Modulation (AAM) Mode Increases Efficiency under Light Loads
- Integrated High-Side and Low-Side MOSFETs (HS-FET and LS-FET, Respectively)
- Optimized for EMC/EMI Reduction:
- CISPR 25 Class 5 Compliant
- Frequency Spread Spectrum (FSS) Modulation
- Up to 2.2MHz Fixed Switching Frequency (fSW)
- Additional Features:
- Power Good (PG) Output
- Over-Current Protection (OCP) with Hiccup Mode
- Fixed-Output Options: 1V, 1.8V, 2.5V, 3V, 3.3V, 3.8V, and 5V
- Adjustable Output Voltage (VOUT) from 0.8V
- Available in a TSOT23-8 Package
- Functional Safety System Design Capable:
- MPSafeTM Compatible – Functional Safety Supporting Document Available
Active Part Numbers:
MPQ4331GJ-xxxx-AEC1-Z MPQ4331GJ-xxxx-AEC1-P
Part numbers ending in P and Z are the same parts. P and Z only indicates reel size.
Meaning of P & Z
MPQ4331-AEC1 Resources
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APPLICATION
CENTRAL GATEWAYSAPPLICATIONAs vehicles continue to integrate electronic control unit (ECU) networks for cutting-edge functionality, the automotive central gateway controller plays a central role in bridging and managing the transfer of data across various protocols (e.g. CAN, FlexRay, LIN, Ethernet, and ISO-9141). The central gateway achieves physical isolation between ECU networks, as well as portability between protocols ...
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APPLICATION
DISPLAY (NAVIGATION, HEADS-UP, CLUSTER)APPLICATIONAutomotive displays — which include the center display, heads-up display (HUD), and gauge instrument cluster — show key information and interactive content to the driver. The center information display is connected to the head unit, and provides navigation and other in-cabin infotainment controls. The automotive HUD and gauge instrument cluster provide easy-to-access information for the driver. Th...
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APPLICATION
HEAD UNITS (MID-RANGE)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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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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APPLICATION
LIDARAPPLICATIONLaser imaging, detection, and ranging (LiDAR) is a rapidly expanding market for automotive advanced driver assistance system (ADAS) applications. Autonomous vehicle perception sensing is a cutting-edge functionality of ADAS technologies, and will continue to develop as new cars integrate radar with cameras and LiDAR systems. LiDAR uses real-time measurements of light pulses to offer higher bandwid...
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APPLICATION
INFOTAINMENT SYSTEMSAPPLICATIONAutomotive in-vehicle infotainment systems are becoming increasingly software-driven to enhance safety and security, as well as the overall driving experience. Modern cars integrate driving and environmental information, passenger entertainment, wireless connections, and navigation into a centralized infotainment system architecture. However, with the rise of sophisticated in-vehicle infotainment ...
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APPLICATION
REARVIEW CAMERAS (OFF BATTERY)APPLICATIONRearview cameras are perhaps the most well-known camera subsystem used in advanced driver assistance systems (ADAS) applications. As this feature is being offered and expected in more and more vehicles, these camera systems must offer high integration and fast data processing to enable accurate, real-time monitoring of possible hazards behind the vehicle and channeling information directly to an L...
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APPLICATION
REARVIEW CAMERAS (COAXIAL)APPLICATIONRearview cameras are perhaps the most well-known camera subsystem used in advanced driver assistance systems (ADAS) applications. As this feature is being offered and expected in more and more vehicles, these camera systems must offer high integration and fast data processing to enable accurate, real-time monitoring of possible hazards behind the vehicle and channeling information directly to an L...
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APPLICATION
FRONT-FACING CAMERAS (OFF BATTERY)APPLICATIONFront-facing cameras are an increasingly popular camera subsystem used in advanced driver assistance systems (ADAS) applications. Because this feature is becoming standard in more and more vehicles, off-battery camera systems must offer high integration and fast data processing to enable accurate, real-time monitoring of possible hazards in front of the vehicle, in addition to assisting with integ...
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APPLICATION
FRONT-FACING CAMERAS (COAXIAL)APPLICATIONFront-facing cameras are an increasingly popular camera subsystem used in advanced driver assistance systems (ADAS) applications. As this feature is being offered and expected in more and more vehicles, these camera systems must offer high integration and fast data processing to enable accurate, real-time monitoring of possible hazards in front of the vehicle, and assist with integrated systems su...
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APPLICATION
WIRELESS CHARGINGAPPLICATIONWireless in-car charging is becoming an increasingly popular feature in new vehicle models. The ability to charge a smartphone or other portable device by simply placing it in a designated area, such as a center console tray — without having to physically connect the device or plug it in — offers a world of convenience for consumers. Charging has become an expected standard in most car models, and...
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APPLICATION
DRIVER MONITORING SYSTEMSAPPLICATIONDriver monitoring systems are one of the latest developments in automotive safety technology. As part of a holistic human-machine interface (HMI), driver monitoring systems track vital sign parameters and driver attentiveness, so that in the event that the driver is unable to operate the vehicle, assistance can be provided. Of course, advanced new features add design complexity and additional cons...
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APPLICATION
360° SURROUND VIEW CAMERASAPPLICATION360° surround view cameras help eliminate blind spots for drivers by providing a birds eye view of the car and typically channeling it directly to an LCD display located in the cabins head unit. This image is a composite created from multiple cameras located around the vehicle, usually at least four. Sometimes thought of as the next step in evolution from the backup camera, 360° surround view came...
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APPLICATION
SENSOR FUSION DOMAIN CONTROLLERSAPPLICATIONPerception-sensing systems have become a popular ADAS offering in new vehicles, and will continue to expand as new cars integrate radar with cameras and even LIDAR systems. However, each of these sensors has strengths and limitation — thats where sensor fusion comes in. By combining the inputs from all of the cars perception-sensing systems, the driver is provided with the best possible informatio...
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APPLICATION
TELEMATICS/E-CALLSAPPLICATIONTelematics and e-call systems help increase vehicle safety by monitoring conditions and, in the event of a crash, assisting the driver with or alerting emergency responders directly to the event. These embedded onboard tools can monitor diagnostics and offer benefits such as vehicle tracking, as well communication for roadside assistance and emergency calls. Of course, new features also bring grea...
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APPLICATION
77GHZ RADARAPPLICATION77GHz radar is quickly growing in popularity for automotive advanced driver assistance system (ADAS) applications. Perception-sensing systems are a growing market within ADAS technologies, and will continue to expand as new cars integrate radar with cameras and even LIDAR systems. Automotive imaging radar is used as an additional way to sense objects or potential hazards around the vehicle. 77GHz ...
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