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Monolithic Power Systems Inc. MPQ2179AGQHE-AEC1-Z
- Part No.:
- MPQ2179AGQHE-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 8-VFDFN
- Datasheet:
-
MPQ2179AGQHE-AEC1-Z.pdf
- Description:
- IC REG BUCK ADJ 3A 8QFN
- Quantity:
- Payment:
- Shipping:
Inventory:795
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Product details
Overview
MPQ2179AGQHE-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified synchronous step-down DC/DC converter delivering up to 3A output current across a 2.5V–6V input range, with 0.6V minimum regulated output voltage, 2.4MHz switching frequency, and integrated 65mΩ/35mΩ MOSFETs. It serves as the primary power supply for automotive infotainment processors, camera modules, and telematics ECUs requiring high efficiency and compact board space.
For engineers reviewing the MPQ2179AGQHE-AEC1-Z datasheet, MPQ2179AGQHE-AEC1-Z pinout, MPQ2179AGQHE-AEC1-Z application, or MPQ2179AGQHE-AEC1-Z equivalent, key selection criteria include its wettable-flank QFN-8 (1.5mm×2mm) package, AAM light-load mode enabling 21μA quiescent current, ±1% FB accuracy over –40°C to +150°C, and integrated soft-start, power-good, and hiccup-mode OVP/SCP protection.
Technical Context
The MPQ2179AGQHE-AEC1-Z uses constant-on-time (COT) control with VIN feed-forward to maintain stable 2.4MHz switching across input and load variations, eliminating loop compensation components. Its internal architecture integrates P-channel HS-FET (65mΩ) and N-channel LS-FET (35mΩ), enabling 100% duty-cycle operation for low-dropout regulation.
It implements Advanced Asynchronous Modulation (AAM) with zero-current detection to reduce switching losses under light loads, while sleep mode further lowers IQ to 21μA. Full protection includes cycle-by-cycle current limiting, output over-voltage protection (115% VFB threshold), thermal shutdown at 170°C, and PG monitoring with 85–90% VFB window and 80μs delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 6V - supports direct connection to automotive battery rails including cold-crank (down to 2.5V) and start-stop transients. |
| Max Output Current | 3A continuous - sufficient to power dual-core automotive SoCs or multi-sensor camera modules without external boost stages. |
| Switching Frequency | 2.4MHz nominal - enables use of sub-2mm-height 1μH inductors and reduces EMI filter size for CISPR-25 Class 5 compliance. |
| Feedback Accuracy | ±1% over –40°C to +150°C - ensures tight output regulation for sensitive analog sensors and RF front-ends in harsh environments. |
| Quiescent Current | 21μA in sleep mode - extends battery life in always-on key fobs and parking cameras during vehicle sleep states. |
| Thermal Shutdown | 170°C with 20°C hysteresis - provides robust overtemperature recovery without latch-up in sealed enclosures. |
| Power Good Threshold | 90% VFB rising / 85% VFB falling - delivers precise sequencing margin for downstream FPGAs and microcontrollers with strict POR requirements. |
Pinout & Package
MPQ2179AGQHE-AEC1-Z is housed in a wettable-flank QFN-8 package (1.5mm × 2mm, 0.5mm pitch), optimized for automated optical inspection (AOI) and high-reliability automotive solder joints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - PG | Open-drain power-good indicator | Signals valid regulation when FB reaches 90% VREF; pulled low if FB drops below 85% VREF - used for system-level power sequencing and fault reporting. |
| 2 - VIN | Main input supply rail | Accepts 2.5V–6V; requires local ceramic decoupling to suppress high-frequency switching noise on battery lines. |
| 3 - SW | Switching node | Drain of internal P-channel HS-FET; connects directly to inductor - critical for EMI layout and thermal path to PCB copper. |
| 4 - GND | Power and signal ground | Primary thermal and return path; must be connected to large copper pour beneath exposed pad for θJC = 25°C/W performance. |
| 5 - EN | Enable control input | Active-high logic: >0.9V enables converter; <0.65V disables - internal 2MΩ pull-down allows single-resistor control from MCU GPIO. |
| 6 - SS | Soft-start timing capacitor | Connects to GND; 1nF minimum sets ~1ms ramp time - prevents inrush current into downstream bulk capacitance during cold boot. |
| 7 - OUT | Regulated output power rail | Delivers up to 3A; connects to output capacitor and load - low-ESR ceramic required to meet ripple spec (<10mVpp typical). |
| 8 - FB | Feedback voltage sense | Monitors output via resistor divider; compares to 0.6V internal reference - enables fixed- or adjustable-output configurations (e.g., 1.2V, 1.8V, 3.3V). |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive ambient temperatures from –40°C to +125°C case (TJ up to +150°C), meeting stringent reliability and failure-rate requirements. |
| MeshConnect™ flip-chip packaging | Reduces parasitic inductance and improves thermal conduction - contributes to lower EMI emissions and 2.4MHz stable operation without external snubbers. |
| Integrated compensation network | Eliminates need for external Type-II or Type-III compensation components - simplifies design, reduces BOM count, and accelerates time-to-test. |
| Output discharge function | Activates internal 150Ω discharge path when EN is low - ensures rapid VOUT decay for safe hot-plug or reset sequencing in multi-rail systems. |
| MPSafe™ QM functional safety documentation | Provides ISO 26262-ready safety manual, FMEDA, and diagnostic coverage analysis - supports ASIL-B system integration without additional safety hardware. |
Applications
| Automotive Instrument Cluster | ADAS Camera Module |
|---|---|
|
Use Scenario: Powers display driver ICs and microcontroller in digital dashboards with wide input voltage swings during engine cranking. IC Role / Device Role / Timing Role: Primary 3.3V/1.2V point-of-load regulator with fast transient response to handle burst-mode GPU rendering loads. Use Value: COT control maintains regulation stability during 2.5V cold-crank events; PG signal synchronizes display initialization with MCU boot sequence. |
Use Scenario: Supplies image sensor and ISP in rear-view or surround-view cameras operating in under-hood temperature extremes. IC Role / Device Role / Timing Role: High-efficiency 1.8V/1.2V supply with AAM mode minimizing standby power during vehicle sleep. Use Value: 21μA IQ extends battery backup runtime; wettable flank QFN ensures solder joint reliability in thermally cycled environments. |
| Telematics Control Unit (TCU) | Automotive Key Fob |
|
Use Scenario: Provides clean 1.1V core voltage for LTE/C-V2X modems and 3.3V I/O rail for CAN transceivers in cellular-connected gateways. IC Role / Device Role / Timing Role: Dual-rail capable buck converter supporting independent enable and PG signaling per rail. Use Value: Integrated OVP/SCP protects modem ICs from bus faults; 2.4MHz switching avoids interference with cellular RF bands. |
Use Scenario: Powers ultra-low-power BLE SoC and accelerometer in passive entry systems with multi-year coin-cell battery life. IC Role / Device Role / Timing Role: Always-on buck regulator with deep sleep mode activated between motion-triggered wake-ups. Use Value: 21μA IQ enables >5-year shelf life; 100% duty cycle supports operation down to 2.5V battery voltage. |
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 |
|---|---|---|---|
| TPS62840DLCR | Lower IQ (150nA) but only 1A output; 2.5V–6V input; no PG or soft-start; QFN-8 (2mm×2mm) | Suitable for ultra-low-power IoT sensors, not automotive-grade; lacks AEC-Q100 qualification and thermal shutdown hysteresis. | Select only for non-automotive battery-powered devices where 1A suffices and PG sequencing is unnecessary. |
| LM61480QRNRRQ1 | 4A output, 2.5V–18V input, 2.1MHz fSW; larger QFN-16 (3mm×3mm); higher IQ (12μA active, 2.5μA sleep) | Designed for wider-input automotive systems (e.g., body control modules); requires external compensation and larger footprint. | Choose when input exceeds 6V or >3A is needed; avoid if board space is constrained or 2.4MHz EMI filtering is critical. |
Compared with TPS62840DLCR and LM61480QRNRRQ1, MPQ2179AGQHE-AEC1-Z uniquely balances AEC-Q100 Grade 1 compliance, 3A capability in a 1.5mm×2mm wettable flank package, 21μA sleep IQ, and integrated PG/SS - making it optimal for space-constrained, thermally demanding automotive infotainment and ADAS subsystems.
Availability
MPQ2179AGQHE-AEC1-Z is available at Aetrix Electronics and suitable for automotive instrument clusters, ADAS camera modules, and telematics control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MPQ2179AGQHE-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 over two decades of expertise in DC/DC conversion, motor drivers, and LED lighting solutions.
The MPQ2179A belongs to MPS's automotive-qualified MPQ series, designed specifically for demanding automotive subsystems requiring AEC-Q100 compliance, high efficiency at light loads, and robust EMI performance in compact footprints.
FAQ
What is the maximum recommended PCB copper area under the exposed thermal pad?
The QFN-8 package's exposed pad must be connected to a minimum 25mm² solid copper pour (≥2 oz thickness) with ≥4 thermal vias (0.3mm diameter, spaced ≤1mm apart) to achieve θJA = 59°C/W on a 4-layer board. This ensures junction temperature remains below 150°C at 3A load and 70°C ambient.
Does MPQ2179AGQHE-AEC1-Z support adjustable output voltage?
Yes - the FB pin accepts an external resistor divider to set VOUT from 0.6V to VIN – 0.5V. For example, R1 = 249kΩ and R2 = 100kΩ yields 1.2V output. Fixed-output variants (e.g., 1.2V, 1.8V) are also available but require separate part numbers.
How does the power-good (PG) pin behave during startup and fault conditions?
PG remains low until FB reaches 90% of 0.6V (540mV); it then pulls high via external pull-up. If FB falls below 85% (510mV), PG is actively pulled low within 80μs. During OVP or thermal shutdown, PG deasserts immediately, providing real-time fault indication to host controllers.
Can MPQ2179AGQHE-AEC1-Z operate with a 1μH inductor?
Yes - the 2.4MHz switching frequency is optimized for 1μH inductors (e.g., XEL4020-102MEB). At 3A load and 5V input, this yields ~1.2A peak-to-peak inductor ripple, well within saturation and thermal limits. Lower inductance increases ripple but maintains stability due to COT control.
Is the soft-start time programmable, and what is the minimum recommended CSS value?
Soft-start time is set by capacitor CSS on the SS pin: tSS ≈ 1.5μA × CSS / 0.6V. A 1nF capacitor yields ~2.5ms ramp time. Minimum CSS is 1nF; values below cause insufficient ramp and potential overshoot. Larger capacitors extend ramp linearly but increase startup delay.
What protection features are implemented, and how do they recover?
Features include cycle-by-cycle current limiting, output OVP (115% VFB, hiccup mode), input UVLO (2.45V rising), thermal shutdown (170°C), and short-circuit protection. All protections auto-recover except thermal shutdown, which requires TJ to drop 20°C below trip point before resuming switching.
Does the device support forced PWM mode, or is it strictly COT/AAM?
MPQ2179AGQHE-AEC1-Z operates exclusively in COT mode with automatic transition between CCM, DCM, and AAM based on load. There is no forced PWM option - light-load efficiency is prioritized via AAM and sleep mode rather than fixed-frequency operation.
MPQ2179AGQHE-AEC1-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 8-VFDFN
- 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):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5V
- Current - Output:
- 3A
- Frequency - Switching:
- 2.4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 8-QFN (2x1.5)
MPQ2179AGQHE-AEC1-Z FAQ
1.How can I place an order for MPQ2179AGQHE-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ2179AGQHE-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 MPQ2179AGQHE-AEC1-Z reliable?
The price and inventory of MPQ2179AGQHE-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 MPQ2179AGQHE-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ2179AGQHE-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ2179AGQHE-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ2179AGQHE-AEC1-Z?
MPQ2179AGQHE-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ2179AGQHE-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 MPQ2179AGQHE-AEC1-Z?
For technical support, including MPQ2179AGQHE-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ2179AGQHE-AEC1-Z requirements.
6.How does Aetrix verify that MPQ2179AGQHE-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ2179AGQHE-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 MPQ2179AGQHE-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ2179AGQHE-AEC1-Z?
All MPQ2179AGQHE-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ2179AGQHE-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 MPQ2179AGQHE-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ2179AGQHE-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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