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Monolithic Power Systems Inc. MPQ4469GV-AEC1-P
- Part No.:
- MPQ4469GV-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 20-VQFN Exposed Pad
- Datasheet:
-
MPQ4469GV-AEC1-P.pdf
- Description:
- IC REG BUCK ADJ 5A 20QFN
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
MPQ4469GV-AEC1-P from Monolithic Power Systems is an AEC-Q100 Grade-1 qualified asynchronous step-down converter with integrated 110mΩ high-side MOSFET, delivering up to 5A continuous output current across a 3.3V–36V input range. It features configurable 350kHz–2.5MHz switching frequency, 10μA light-load quiescent current, and advanced asynchronous modulation (AAM) for automotive battery systems requiring cold-crank support and low-power standby.
For engineers reviewing the MPQ4469GV-AEC1-P datasheet, MPQ4469GV-AEC1-P pinout, MPQ4469GV-AEC1-P application, or MPQ4469GV-AEC1-P equivalent, this device is selected for automotive infotainment power rails, ADAS camera modules, and body control units where wide VIN tolerance, thermal robustness, and precise PG signaling are critical.
Technical Context
The MPQ4469GV-AEC1-P employs peak-current-mode control with internal error amplifier and programmable soft-start, enabling fast transient response and stable regulation under dynamic load steps. Its AAM mode dynamically scales switching frequency below 100kHz at light loads to minimize gate-drive and switching losses while maintaining ±10% output accuracy via 0.8V feedback reference.
It integrates synchronous bootstrap refresh logic, supports external clock synchronization with selectable in-phase/180° out-of-phase operation via PHASE pin, and delivers hiccup-mode overcurrent protection with 7.7A typical current limit and thermal shutdown at 170°C. The BIAS pin enables efficient biasing from an external 5V–18V supply to reduce dissipation during low-VIN operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage range | 3.3V to 36V - supports full automotive battery range including cold-crank (down to 3.3V) and load-dump (up to 36V) |
| Output current | 5A continuous - sustained delivery with internal 110mΩ HS-FET and thermal derating per θJA = 40°C/W |
| Quiescent current | 10μA in sleep mode - enables >1-year battery life in always-on vehicle modules |
| Switching frequency | 350kHz to 2.5MHz - programmable via FREQ resistor or external SYNC signal for EMI optimization |
| Feedback reference | 0.8V ±2% - sets output voltage via external resistor divider; enables precision 3.3V, 5V, or custom rail generation |
| Power good threshold | ±10% window (85–95% rising / 79–89% falling) - provides reliable system reset and sequencing control |
| Minimum on-time | 100ns - supports high step-down ratios (e.g., 24V→3.3V) without pulse-skipping instability |
| AEC-Q100 grade | Grade-1 (−40°C to +125°C TJ) - qualified for engine bay and front-end automotive applications |
Pinout & Package
MPQ4469GV-AEC1-P is housed in a thermally enhanced QFN-20 (4mm × 5mm) package with exposed thermal pad. Pin assignments follow JEDEC MO-220 standard and require strict adherence to layout guidelines for PGND copper pour, BST capacitor placement, and FB trace routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VCC | Bias supply input | Powers internal control circuitry; requires ≥1µF ceramic cap to PGND for stability |
| 2 BST | Bootstrap supply | Drives HS-FET gate; must connect 0.1µF ceramic cap between BST and SW |
| 3,4 SW | Switch node | High-frequency switching output; connects to inductor and BST capacitor |
| 5,12 PGND | Power ground | Reference for power stage; must be low-impedance plane tied to exposed pad |
| 7 BIAS | External bias input | Optional 5V–18V supply to reduce VCC dissipation and improve efficiency at low VIN |
| 8 PG | Power good indicator | Open-drain output asserting high when VOUT is within ±10% of target; pulls low during fault |
| 9 SYNC | Frequency synchronization | Accepts 350kHz–2.5MHz external clock; enables multi-phase interleaving or EMI spreading |
| 10 EN | Enable control | Active-high logic input; 1.05V threshold with 160mV hysteresis for noise immunity |
| 13,14 VIN | Main input supply | Primary power source; requires local ≥10µF ceramic decoupling near pins |
| 15 PHASE | Synchronization phase select | Logic-high = in-phase sync; logic-low = 180° out-of-phase; tie to GND if unused |
| 17 FREQ | Frequency programming | Resistor-to-GND sets fSW: 180kΩ → 475kHz, 82kΩ → 1MHz, 27kΩ → 2.5MHz |
| 18 FB | Feedback input | Compares output voltage to 0.8V reference; place resistor divider within 2mm of pin |
| 19 SS | Soft-start timing | 10µA current source charges external cap; sets ramp time and limits inrush current |
| 20 AGND | Analog ground | Reference for error amplifier and logic; connect directly to PGND plane under exposed pad |
Key Features
| Feature | Design Value |
|---|---|
| Advanced Asynchronous Modulation (AAM) | Reduces switching frequency at light load to maintain >85% efficiency down to 1mA output |
| Low-dropout mode | Enables regulation with VIN as low as VOUT + 0.5V, supporting cold-crank operation |
| Hiccup-mode overcurrent protection | Limits average short-circuit current to <100mA, preventing thermal runaway during faults |
| Configurable soft-start | External capacitor sets ramp time from 1ms to 100ms, eliminating inrush-induced rail collapse |
| Thermal shutdown with hysteresis | Shuts down at 170°C and restarts at 150°C, ensuring safe recovery without oscillation |
| 100ns minimum on-time | Permits high-ratio conversion (e.g., 24V→3.3V @ 500kHz) without sub-harmonic instability |
Applications
| Automotive Infotainment Power Supply | ADAS Camera Module Rail |
|---|---|
|
Use Scenario: Powers SoC, display driver, and audio codec in head-unit systems with 12V battery input and strict EMC requirements. IC Role / Device Role / Timing Role: Primary buck regulator providing stable 5V/3.3V rails; synchronized to system clock via SYNC pin to suppress beat frequencies. Use Value: AAM mode extends battery runtime during key-off monitoring; PG signal enables controlled SoC wake-up and shutdown sequencing. |
Use Scenario: Supplies image sensor and ISP in rear-view or surround-view cameras operating in engine compartment temperature extremes. IC Role / Device Role / Timing Role: High-reliability step-down converter delivering 1.8V/2.8V rails; uses low-dropout mode to sustain output during cold-crank dips to 3.3V. Use Value: AEC-Q100 Grade-1 qualification ensures operation at 125°C junction; hiccup OCP prevents thermal damage during lens motor stall events. |
| Body Control Unit (BCU) Core Logic | Automotive Telematics Gateway |
|
Use Scenario: Generates 3.3V logic rail for microcontroller, CAN transceiver, and LIN interface in door module or lighting controller. IC Role / Device Role / Timing Role: Always-on power manager with ultra-low IQ; enables >10-year shelf life and instant wake from deep sleep. Use Value: 10μA sleep current minimizes parasitic drain; EN pin allows MCU-controlled power cycling for firmware updates. |
Use Scenario: Powers cellular modem, GNSS receiver, and Ethernet PHY in connected car telematics units with dual-input redundancy. IC Role / Device Role / Timing Role: Primary 5V rail generator accepting either 12V battery or backup 5V USB input via BIAS pin. Use Value: BIAS pin reduces thermal stress when VIN drops below 5V; PG signal validates rail integrity before modem initialization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480-Q1 | Synchronous design; higher 8A rating; fixed 2.1MHz fSW; no AAM mode; 15μA IQ | Better efficiency above 1A; less suitable for ultra-low-IQ battery hold-up | Select when peak efficiency >92% at 2–5A is prioritized over standby current |
| TPS54560-Q1 | Asynchronous; 6A rating; 100kHz–2.5MHz adjustable fSW; 18μA IQ; no BIAS pin | Wider fSW range but lacks low-VIN bias optimization and AAM granularity | Prefer when cost sensitivity outweighs thermal performance at low VIN |
Compared with LM61480-Q1 and TPS54560-Q1, MPQ4469GV-AEC1-P uniquely balances ultra-low 10μA sleep current, AAM-based light-load efficiency, and BIAS-enabled thermal resilience-making it optimal for automotive modules requiring both long-term battery retention and robust cold-crank operation.
Availability
MPQ4469GV-AEC1-P is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and body control units requiring stable component supply with AEC-Q100 compliance, extended temperature operation, and production-grade traceability.
Supply support for MPQ4469GV-AEC1-P 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 power management ICs, with core expertise in DC/DC converters, LED drivers, and motor drivers for automotive, industrial, and consumer markets.
The MPQ4469 belongs to MPS's AEC-Q100-qualified automotive buck converter product line, engineered specifically for demanding vehicle subsystems requiring wide input range, low quiescent current, and robust fault protection under harsh environmental conditions.
FAQ
What is the maximum allowable input voltage for MPQ4469GV-AEC1-P?
The absolute maximum input voltage is +40V, but the recommended operating range is 3.3V to 36V. Operation above 36V risks exceeding the internal high-side MOSFET's breakdown rating and may trigger overvoltage protection or permanent damage. Automotive load-dump transients up to 36V are fully supported within specification.
How does the BIAS pin improve efficiency?
The BIAS pin allows connection of an external 5V–18V supply to power the internal 5V regulator, bypassing the VIN-to-VCC LDO path. This eliminates conduction loss in the LDO when VIN is high (e.g., 24V), reducing thermal stress and improving full-load efficiency by up to 2.5% compared to VIN-only operation.
Can MPQ4469GV-AEC1-P operate with VIN below 5V?
Yes - the device supports VIN as low as 3.3V and enters low-dropout mode to maintain regulation. At VIN < 5V, the internal VCC regulator tracks VIN linearly, and the BIAS pin must be left floating or grounded. Output current capability is reduced due to lower gate drive voltage, but 5A remains achievable down to VIN = VOUT + 0.5V.
What is the purpose of the PHASE pin?
The PHASE pin selects synchronization phase relative to the external SYNC signal: logic-high yields in-phase switching, logic-low yields 180° out-of-phase. This enables interleaved operation with multiple MPQ4469 devices to reduce input/output ripple and EMI. If SYNC is unused, PHASE must be tied to GND to prevent undefined behavior.
How is power good (PG) asserted and deasserted?
PG is an open-drain output that pulls high when VFB is within ±10% of 0.8V reference (i.e., 0.72V–0.88V rising, 0.632V–0.712V falling). It asserts after soft-start completes and deasserts within 50µs of VFB falling outside the window. A 100kΩ pull-up to 3.3V is recommended for clean logic-level signaling.
Does MPQ4469GV-AEC1-P support forced PWM mode?
No - the device operates exclusively in peak-current-mode control with automatic transition between continuous conduction mode (CCM), discontinuous conduction mode (DCM), and AAM sleep mode. There is no pin or register to force fixed-frequency PWM at light loads; AAM is inherent to its architecture for optimal light-load efficiency.
What PCB layout practices are critical for thermal performance?
Maximize copper area connected to the exposed thermal pad using ≥6 thermal vias (0.3mm diameter) to inner ground planes. Keep PGND traces wide and short, separate analog (AGND) and power (PGND) grounds with single-point connection under the IC, and place BST and input capacitors within 3mm of their respective pins to minimize loop inductance.
MPQ4469GV-AEC1-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 20-VQFN 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):
- 3.3V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 36V
- Current - Output:
- 5A
- Frequency - Switching:
- 350kHz ~ 2.5MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-QFN (4x5)
MPQ4469GV-AEC1-P FAQ
1.How can I place an order for MPQ4469GV-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4469GV-AEC1-P 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 MPQ4469GV-AEC1-P reliable?
The price and inventory of MPQ4469GV-AEC1-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ4469GV-AEC1-P is usually 5 days.
3.What payment methods are accepted for MPQ4469GV-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4469GV-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4469GV-AEC1-P?
MPQ4469GV-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4469GV-AEC1-P 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 MPQ4469GV-AEC1-P?
For technical support, including MPQ4469GV-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4469GV-AEC1-P requirements.
6.How does Aetrix verify that MPQ4469GV-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPQ4469GV-AEC1-P 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 MPQ4469GV-AEC1-P meets industry standards.
7.What is the process for return or replacement of MPQ4469GV-AEC1-P?
All MPQ4469GV-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4469GV-AEC1-P, 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 MPQ4469GV-AEC1-P part is unused and in its original packaging.
Return procedure for MPQ4469GV-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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