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Monolithic Power Systems Inc. MPQ4569GN-AEC1-Z
- Part No.:
- MPQ4569GN-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
MPQ4569GN-AEC1-Z.pdf
- Description:
- IC REG BUCK ADJ 300MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MPQ4569GN-AEC1-Z from Monolithic Power Systems is a 75V, 0.3A AEC-Q100 Grade 1 qualified synchronous step-down converter with integrated 1.2Ω high-side and 0.45Ω low-side MOSFETs, 1% FB reference tolerance at room temperature, programmable soft-start, and 5μA shutdown current - designed for automotive power rails such as infotainment head units and ADAS camera modules.
For engineers reviewing the MPQ4569GN-AEC1-Z datasheet, MPQ4569GN-AEC1-Z pinout, MPQ4569GN-AEC1-Z application, or MPQ4569GN-AEC1-Z equivalent, key selection criteria include input voltage range (4.5–75V), thermal shutdown threshold (175°C), POK open-drain output, VREF capability (1V, 500μA), and SOIC-8 EP package compatibility with automotive PCB layout constraints.
Technical Context
The MPQ4569GN-AEC1-Z implements a current-mode PWM control scheme with zero-current detection (ZCD) to regulate output voltage via feedback comparison against an internal 1V reference. It features adaptive frequency scaling under light load to reduce switching losses and includes dedicated BIAS pin operation to improve efficiency when powered from regulated output (2.9–5.5V).
Its functional block integrates a 2.6V internal regulator, bootstrap driver with UVLO (2.4V rising threshold), precision current limit (720mA typ), and open-drain POK output that asserts HIGH when VOUT exceeds 90% of nominal regulation - all operating across –40°C to +125°C junction temperature range per AEC-Q100 Grade 1 requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 75V - supports direct connection to automotive battery (cold-crank down to 4.5V) and industrial 48V systems without pre-regulation. |
| Output Current | 0.3A continuous - sufficient for powering microcontrollers, sensors, and CAN transceivers in distributed automotive subsystems. |
| FB Reference Voltage | 1.0V ±1% at 25°C - enables precise output regulation (e.g., 3.3V ±33mV) using standard resistor dividers. |
| Quiescent Current | 20μA active mode - minimizes standby power loss in always-on vehicle modules like telematics gateways. |
| Shutdown Current | 5μA max - ensures <10μW system leakage during ignition-off, critical for battery longevity in parked vehicles. |
| Thermal Shutdown | 175°C with 20°C hysteresis - provides robust fault protection during sustained overload or poor heatsinking in engine bay environments. |
| POK Accuracy | ±5% trip hysteresis - delivers reliable power-good signaling for downstream sequencers and safety monitors. |
Pinout & Package
MPQ4569GN-AEC1-Z uses the SOIC-8 EP (exposed pad) package, optimized for thermal dissipation in automotive under-hood applications. The exposed pad must be soldered to a thermal plane for θJA = 48°C/W performance.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Power ground reference | Primary return path for high-current switch node; requires low-inductance connection to output capacitor and thermal pad. |
| 2 VIN | Main input supply | Accepts 4.5–75V; requires local 10μF/100V ceramic decoupling to suppress switching noise and ESD transients. |
| 3 EN | Enable control input | High-logic enable (1.55V rising threshold); internally pulled down - float disables device with 5μA shutdown current. |
| 4 FB | Feedback input | Compares resistive divider output against 1V internal reference to regulate VOUT; supports remote sensing via Kelvin connection. |
| 6 BIAS | Bias supply input | Accepts 2.9–5.5V to power internal circuitry - improves efficiency by bypassing VIN-based regulation when output rail is stable. |
| 7 BST | Bootstrap supply | Charges external capacitor to ~5V for high-side MOSFET gate drive; requires 0.1μF ceramic between BST and SW pins. |
| 8 SW | Switch node | Connects to inductor and catch diode; carries full switching current - must be routed with minimal loop area to reduce EMI. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for operation from –40°C to +125°C ambient, meeting automotive reliability and stress-test requirements. |
| Integrated 1.2Ω/0.45Ω MOSFETs | Eliminates external power stage components while maintaining >90% efficiency at 12V→3.3V/300mA with 33μH inductor. |
| Programmable soft-start | External SS capacitor sets startup ramp time - prevents inrush current and output overshoot during cold-boot sequences. |
| VREF output (1V, 500μA) | Provides precision reference for auxiliary circuits (e.g., ADC bias, sensor excitation) without external voltage reference IC. |
| Open-drain POK output | Signals valid regulation status to MCU or PMIC; compatible with 3.3V/5V logic families and supports wired-OR fault reporting. |
Applications
| Infotainment Head Unit Power | ADAS Camera Module Supply |
|---|---|
Use Scenario: Powers SoC, display interface, and audio codec in automotive infotainment systems requiring stable 3.3V/5V rails during engine start-stop cycles. IC Role / Device Role / Timing Role: Primary DC-DC regulator converting 9–16V battery to 3.3V with fast transient response to handle burst-mode video processing loads. Use Value: 4.5V minimum input supports cold-crank operation; 5μA shutdown current extends battery life during vehicle sleep mode. | Use Scenario: Supplies image sensor, ISP, and serializer in rear-view or surround-view cameras mounted in high-temperature zones. IC Role / Device Role / Timing Role: Point-of-load converter delivering regulated 1.8V/3.3V with thermal shutdown protection up to +125°C junction temperature. Use Value: AEC-Q100 qualification ensures reliability under vibration and thermal cycling; POK output enables safe boot sequencing before sensor initialization. |
| Telematics Control Unit (TCU) | Body Control Module (BCM) Subsystem |
Use Scenario: Provides isolated 3.3V rail for LTE modem, GNSS receiver, and secure MCU in always-connected vehicle gateways. IC Role / Device Role / Timing Role: Always-on buck converter with ultra-low quiescent current, enabling GPS tracking and firmware updates during ignition-off. Use Value: 20μA active IQ and 5μA shutdown current meet ISO 16750-2 parasitic drain limits for parked vehicle battery preservation. | Use Scenario: Powers door module microcontrollers, LIN transceivers, and LED drivers in centralized body electronics architecture. IC Role / Device Role / Timing Role: Secondary regulator stepping down 12V main bus to 5V/3.3V for mixed-signal peripherals with ESD-hardened I/O. Use Value: Integrated MOSFETs reduce BOM count and PCB footprint; SOIC-8 EP package supports automated optical inspection and reflow profiling for high-volume manufacturing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480-Q1 | Higher 3.5A output, 65V max input, no integrated VREF output, 2.5μA shutdown current | Targeted at higher-power ADAS ECUs; lacks dedicated reference for auxiliary analog circuits | Select when >0.3A load current or tighter shutdown IQ is required; not drop-in due to different pinout and compensation scheme |
| TPS543B20 | 40V max input, 3A output, PMBus interface, no AEC-Q100 Grade 1 rating | Designed for programmable industrial power supplies; lacks automotive qualification and cold-crank support | Choose only for non-automotive designs needing digital control; incompatible with automotive qualification mandates |
Compared with LM61480-Q1 and TPS543B20, MPQ4569GN-AEC1-Z uniquely balances AEC-Q100 compliance, integrated VREF, ultra-low shutdown current, and SOIC-8 EP manufacturability - making it optimal for cost-sensitive, thermally constrained automotive subsystems below 0.3A.
Availability
MPQ4569GN-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and telematics control units requiring stable component supply with full AEC-Q100 traceability and long-term lifecycle support.
Supply support for MPQ4569GN-AEC1-Z includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance analog and power ICs, with over two decades of expertise in DC-DC conversion and automotive-grade power management.
The MPQ4569 product line delivers compact, AEC-Q100-qualified buck converters targeting space-constrained automotive subsystems where input voltage range, thermal resilience, and low IQ are critical design parameters.
FAQ
What is the maximum allowable input voltage for MPQ4569GN-AEC1-Z?
The absolute maximum input voltage is +80V, but the recommended operating range is 4.5V to 75V. Exceeding 75V may trigger overvoltage protection or cause permanent damage. The device is specifically validated for automotive battery applications including cold-crank (down to 4.5V) and load-dump (up to 75V) conditions per ISO 7637-2.
Does MPQ4569GN-AEC1-Z support adjustable output voltage?
Yes, output voltage is set externally using a resistive divider from VOUT to the FB pin. With a 1V internal reference, common outputs like 3.3V (R4=1200kΩ, R5=523kΩ) and 5V (R4=1200kΩ, R5=300kΩ) are supported. Feedback resistor values should be in the megohm range to minimize no-load current draw.
How does the BIAS pin improve efficiency?
The BIAS pin accepts 2.9–5.5V to power the internal regulator, bypassing VIN-based regulation. When connected to a stable output rail, it reduces power loss in the internal LDO and improves overall efficiency by up to 3% at light loads - especially beneficial in multi-rail automotive systems where a clean 3.3V or 5V rail is already available.
Is the POK output compatible with 3.3V logic systems?
Yes, the POK pin is an open-drain output rated for 6V maximum, allowing direct connection to 3.3V or 5V logic with an external pull-up resistor. It asserts HIGH when VOUT reaches ≥90% of nominal value and pulls LOW during shutdown, startup, or undervoltage - enabling reliable power sequencing in MCU-based automotive modules.
What thermal considerations apply to the SOIC-8 EP package?
The SOIC-8 EP package requires soldering the exposed thermal pad to a minimum 100mm² copper pour on the PCB for effective heat dissipation. With proper layout, θJA is 48°C/W, allowing 0.3A continuous operation at +85°C ambient. Thermal shutdown activates at 175°C junction temperature with 20°C hysteresis to prevent thermal runaway.
Can MPQ4569GN-AEC1-Z operate with input voltage below 4.5V?
No - the VIN UVLO rising threshold is 4.2V (min 3.9V), and operation below 4.5V is outside the specified operating range. Attempting to operate below this level will cause the device to remain in shutdown. For sub-4.5V applications, consider alternative regulators with lower UVLO thresholds.
What is the purpose of the feedforward capacitor between VOUT and FB?
A 39pF feedforward capacitor stabilizes the feedback node against high-frequency noise, preventing switching frequency jitter caused by small output ripple. This capacitor improves EMI performance and ensures consistent regulation during light-load conditions where FB node sensitivity is highest.
MPQ4569GN-AEC1-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 75V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 67.5V
- Current - Output:
- 300mA
- Frequency - Switching:
- -
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC-EP
MPQ4569GN-AEC1-Z FAQ
1.How can I place an order for MPQ4569GN-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4569GN-AEC1-Z on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MPQ4569GN-AEC1-Z reliable?
The price and inventory of MPQ4569GN-AEC1-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ4569GN-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ4569GN-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4569GN-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4569GN-AEC1-Z?
MPQ4569GN-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4569GN-AEC1-Z order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MPQ4569GN-AEC1-Z?
For technical support, including MPQ4569GN-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4569GN-AEC1-Z requirements.
6.How does Aetrix verify that MPQ4569GN-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ4569GN-AEC1-Z products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MPQ4569GN-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ4569GN-AEC1-Z?
All MPQ4569GN-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4569GN-AEC1-Z, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MPQ4569GN-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ4569GN-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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