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Monolithic Power Systems Inc. MPQ4467GL-AEC1-Z
- Part No.:
- MPQ4467GL-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 16-PowerVQFN
- Datasheet:
-
MPQ4467GL-AEC1-Z.pdf
- Description:
- IC REG BUCK ADJ 2.5A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MPQ4467GL-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, asynchronous step-down DC/DC converter with integrated 90mΩ high-side MOSFET, delivering up to 2.5A output current across a 3.3V–36V input range. It features programmable switching frequency (350kHz–2.5MHz), 10μA sleep-mode quiescent current, and low-dropout operation for automotive cold-crank support - deployed in infotainment power rails and ADAS camera modules.
For engineers reviewing the MPQ4467GL-AEC1-Z datasheet, MPQ4467GL-AEC1-Z pinout, MPQ4467GL-AEC1-Z application, or MPQ4467GL-AEC1-Z equivalent, key selection criteria include its AAM light-load efficiency mode, ±10% PG accuracy, 80ns minimum on-time, 1μA shutdown current, and QFN-16 (3mm×4mm) thermal performance validated per JESD51-7 on 4-layer EV board.
Technical Context
The MPQ4467 employs current-mode control with peak-current sensing and internal error amplifier feedback to VFB (0.8V reference), enabling fast transient response and stable regulation under dynamic load steps. Its AAM (Advanced Asynchronous Modulation) architecture dynamically scales switching frequency below light-load thresholds to minimize gate driver and switching losses.
It integrates synchronous bootstrap refresh logic, hiccup-mode over-current protection triggered at 4.7–7.3A HS-FET current limit, and thermal shutdown at 170°C with 20°C hysteresis. The device supports external clock synchronization with selectable in-phase or 180° out-of-phase alignment via the PHASE pin.
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 transients (up to 36V). |
| Output Current | 2.5A continuous - sustained delivery with thermal derating per θJA = 41°C/W on 4-layer EV board. |
| Quiescent Current | 10μA in sleep mode - enables >1-year battery standby in always-on vehicle modules. |
| Switching Frequency | 350kHz to 2.5MHz - programmable via FREQ resistor or external SYNC signal for EMI optimization and multi-rail phase alignment. |
| Feedback Reference | 0.800V ±2% - sets precise output voltage via external resistor divider; enables 3.3V, 5V, or custom rail generation. |
| Power Good Accuracy | ±10% window (85–95% rising / 105–115% falling) - provides reliable system power sequencing and fault detection. |
| Min On-Time | 80ns - supports high VIN-to-VOUT conversion ratios (e.g., 24V→3.3V) without pulse-skipping instability. |
Pinout & Package
MPQ4467GL-AEC1-Z is housed in a thermally enhanced QFN-16 package (3mm × 4mm, 0.5mm pitch) with exposed thermal pad (PGND-connected) for PCB-level heat dissipation. Pin 1 is marked by dot; top marking includes MPS prefix, year/week code, and part-specific digits.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PHASE | Synchronization phase select | Logic-high = in-phase sync; logic-low = 180° out-of-phase; must be tied to GND if unused to prevent floating state. |
| 2 VIN | Main input supply | Accepts 3.3V–36V; requires local ceramic decoupling (≥10µF) near pin for EMI suppression and transient immunity. |
| 3,10 SW | Switch node | Drives external inductor; high dv/dt node requiring minimized trace area and guard ring isolation. |
| 4,9 PGND | Power ground | High-current return path for MOSFET and inductor; must connect directly to thermal pad and solid copper pour. |
| 5 EN | Enable control | Active-high enable with 0.9–1.2V threshold; hysteresis ensures noise-immune startup/shutdown sequencing. |
| 6 SYNC | External clock input | Accepts 350kHz–2.5MHz square wave; external clock must exceed internal fSW by ≥250kHz for reliable locking. |
| 7 PG | Open-drain power good | Asserts high when VOUT is within ±10% of target; requires external pull-up (e.g., 100kΩ to 3.3V) for logic interface. |
| 8 BIAS | External bias supply | Optional 5V–18V auxiliary supply to reduce internal regulator loss and improve full-load efficiency by ~2%. |
| 11 BST | Bootstrap supply | Connect 0.1µF ceramic capacitor between BST and SW to sustain high-side gate drive during conduction. |
| 12 VCC | Internal bias rail | Regulated ~5V output; requires ≥1µF ceramic decoupling to AGND for stable gate driver and control logic. |
| 13 AGND | Analog ground | Reference for FB, SS, and error amplifier; must be isolated from PGND except at single-point star connection. |
| 14 SS | Soft-start timing | 10µA current source charges external capacitor; start-up time = 0.8V × CSS / 10µA (e.g., 100nF → 8ms). |
| 15 FB | Voltage feedback input | Compares divided output against 0.8V reference; trace routing must avoid noise coupling and vias for stability. |
| 16 FREQ | Frequency programming | Resistor-to-GND sets fSW: 180kΩ = 475kHz, 82kΩ = 1MHz, 27kΩ = 2.5MHz (±15% tolerance). |
Key Features
| Feature | Design Value |
|---|---|
| AAM light-load efficiency mode | Reduces switching frequency under light loads to maintain >85% efficiency at 1mA output, critical for always-on automotive ECUs. |
| Low dropout operation | Supports 100% duty cycle down to VIN = VOUT + 0.3V, enabling stable 3.3V output during 3.3V cold-crank events. |
| Hiccup-mode over-current protection | Limits average short-circuit current to <100mA, preventing thermal runaway while allowing automatic recovery after fault removal. |
| Programmable soft-start | External capacitor sets monotonic VOUT ramp time (e.g., 100nF = 8ms), eliminating inrush current stress on input capacitors and upstream converters. |
| Thermal shutdown with hysteresis | Shuts down at 170°C junction temperature and re-enables only after cooling to 150°C, ensuring robust fault tolerance in sealed enclosures. |
Applications
| Automotive Infotainment | ADAS Camera Power |
|---|---|
|
Use Scenario: Powering SoC core rails (e.g., 1.1V/1.8V) and DDR memory interfaces in head-unit systems with wide battery voltage variation. IC Role / Device Role / Timing Role: Primary buck converter supplying regulated 3.3V/5V intermediate bus; synchronized via SYNC to avoid beat frequencies with display clocks. Use Value: AAM mode maintains >90% efficiency at standby currents (<10mA), extending ignition-off runtime; PG signal enables safe SoC reset sequencing. |
Use Scenario: Generating clean 3.3V for CMOS image sensors and ISP processors in surround-view cameras exposed to engine bay temperatures. IC Role / Device Role / Timing Role: High-reliability point-of-load regulator operating from 12V battery; leverages low dropout mode during cranking and thermal shutdown for fault containment. Use Value: 125°C max operating junction temperature and AEC-Q100 Grade 1 qualification ensure functional safety compliance; 80ns min on-time supports 12V→3.3V conversion without instability. |
| Body Control Module (BCM) | Telematics Control Unit (TCU) |
|
Use Scenario: Supplying 5V to microcontroller, CAN transceivers, and sensor interfaces in door modules and lighting controllers. IC Role / Device Role / Timing Role: Input-stage buck converter accepting raw battery input (5V–36V); uses EN pin for controlled wake-up from ultra-low-power sleep states. Use Value: 1μA shutdown current and 10μA sleep current minimize parasitic drain; PG signal validates rail integrity before MCU boot. |
Use Scenario: Providing stable 3.3V to LTE modem, GNSS receiver, and secure element in cellular-connected vehicle gateways. IC Role / Device Role / Timing Role: Isolated power stage with BIAS pin connected to 5V LDO output to reduce self-heating and improve 24/7 operational reliability. Use Value: External clock sync allows TCU to align switching noise away from sensitive RF bands; ±2% VREF ensures accurate voltage scaling for modem DVFS. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar asynchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4467GQ-AEC1-Z | Same silicon die but in QFN-20 (4mm×4mm) package with enhanced thermal pad and separate AGND/PGND pins. | Better thermal performance (θJA = 35°C/W) suits higher ambient or sustained 2.5A loads; larger footprint limits space-constrained layouts. | Select for designs requiring >10K-hour lifetime at 125°C ambient or where layout allows extra 1mm² board area. |
| TPS543320RJER | Synchronous buck with 4.5V–18V input, 3A output, and integrated FETs; no AAM mode; higher IQ (25μA). | Superior light-load efficiency only above 10mA; lacks cold-crank support below 4.5V and automotive qualification. | Prefer only in non-automotive industrial applications with narrow input range and no cranking requirement. |
Compared with MPQ4467GL-AEC1-Z, the MPQ4467GQ-AEC1-Z offers lower thermal resistance for extended high-load operation, while the TPS543320RJER trades automotive robustness for synchronous efficiency above 10mA - making the MPQ4467GL-AEC1-Z uniquely balanced for cost-sensitive, space-constrained AEC-Q100 systems demanding wide VIN and ultra-low IQ.
Availability
MPQ4467GL-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and body control units requiring stable component supply with AEC-Q100 Grade 1 assurance and full production traceability.
Supply support for MPQ4467GL-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 power management ICs, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.
The MPQ4467 belongs to MPS's automotive-grade DC/DC converter product line, engineered specifically for harsh-temperature, high-reliability vehicle subsystems requiring wide-input operation, ultra-low quiescent current, and AEC-Q100 compliance.
FAQ
What is the maximum allowable input voltage for MPQ4467GL-AEC1-Z?
The absolute maximum VIN rating is +40V, but the recommended operating range is 3.3V to 36V per datasheet specifications. Operation above 36V risks violating automotive load-dump immunity requirements and may trigger overvoltage protection or damage internal circuitry. For sustained 36V operation, ensure thermal design accommodates increased power dissipation.
Can MPQ4467GL-AEC1-Z operate with no external BIAS supply?
Yes - the BIAS pin is optional. When left floating or tied to GND, the internal VCC regulator powers all circuitry from VIN. Using an external 5V–18V BIAS supply reduces internal regulator loss, improving full-load efficiency by up to 2% and lowering die temperature, especially at high VIN conditions.
How does the PHASE pin affect synchronization behavior?
The PHASE pin selects sync polarity: logic-high enables in-phase alignment with the external SYNC clock, while logic-low configures 180° out-of-phase operation. This allows interleaving with other MPQ4467 devices to reduce input/output ripple. The pin must never be left floating - tie to GND if sync is unused.
What is the purpose of the 80ns minimum on-time specification?
The 80ns minimum on-time enables stable regulation at high step-down ratios (e.g., 24V→3.3V), where traditional controllers would skip pulses and cause output voltage ripple or instability. It ensures deterministic PWM operation even at low duty cycles, critical for maintaining tight regulation in automotive battery-supplied systems.
Does MPQ4467GL-AEC1-Z support forced PWM mode?
No - the MPQ4467 operates exclusively in current-mode PWM at medium-to-heavy loads and transitions automatically to AAM (asynchronous modulation) at light loads. It does not offer user-selectable forced-PWM mode; this trade-off prioritizes light-load efficiency over fixed-frequency EMI predictability.
How is power good (PG) accuracy defined and tested?
PG asserts high when VFB reaches 85–95% of VREF (0.8V) during startup and deasserts when VFB falls below 79–89% (rising) or exceeds 105–115% (falling) of VREF. Accuracy is characterized across -40°C to +125°C and verified per AEC-Q100 test conditions using precision voltage sources and oscilloscope-based timing capture.
What PCB layout practices are critical for thermal performance?
Maximize copper area connected to the exposed thermal pad (pins 4, 9, and center pad), use ≥6 thermal vias (0.3mm diameter) to inner ground planes, separate AGND and PGND pours with single-point connection near the IC, and place input capacitors within 5mm of VIN/PGND pins to minimize loop inductance.
MPQ4467GL-AEC1-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MPQ
- Package/Case:
- 16-PowerVQFN
- 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:
- 2.5A
- Frequency - Switching:
- 475kHz ~ 2.5MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (3x4)
MPQ4467GL-AEC1-Z FAQ
1.How can I place an order for MPQ4467GL-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4467GL-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 MPQ4467GL-AEC1-Z reliable?
The price and inventory of MPQ4467GL-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 MPQ4467GL-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ4467GL-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4467GL-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4467GL-AEC1-Z?
MPQ4467GL-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4467GL-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 MPQ4467GL-AEC1-Z?
For technical support, including MPQ4467GL-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4467GL-AEC1-Z requirements.
6.How does Aetrix verify that MPQ4467GL-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ4467GL-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 MPQ4467GL-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ4467GL-AEC1-Z?
All MPQ4467GL-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4467GL-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 MPQ4467GL-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ4467GL-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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