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Monolithic Power Systems Inc. MPQ2179AGQHE-AEC1-P
- Part No.:
- MPQ2179AGQHE-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 8-VFDFN
- Datasheet:
-
MPQ2179AGQHE-AEC1-P.pdf
- Description:
- IC REG BUCK ADJ 3A 8QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,266
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Product details
Overview
MPQ2179AGQHE-AEC1-P 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 output voltage, 2.4MHz switching frequency, and integrated 65mΩ/35mΩ MOSFETs. It serves as the primary power supply for automotive infotainment processors requiring tight regulation, fast transient response, and robust fault protection.
For engineers reviewing the MPQ2179AGQHE-AEC1-P datasheet, MPQ2179AGQHE-AEC1-P pinout, MPQ2179AGQHE-AEC1-P application, or MPQ2179AGQHE-AEC1-P equivalent, key selection criteria include its wettable-flank QFN-8 package, 1% FB accuracy over –40°C to +150°C, 21μA sleep-mode quiescent current, and integrated soft-start and power-good signaling for automotive sequencing compliance.
Technical Context
The MPQ2179AGQHE-AEC1-P uses constant-on-time (COT) control with VIN feed-forward to maintain stable 2.4MHz switching across input and load variations, enabling sub-100ns minimum on/off times and eliminating external compensation. Its internal architecture integrates high-side P-channel (65mΩ) and low-side N-channel (35mΩ) MOSFETs, a 0.6V reference with ±1% accuracy, and a dedicated zero-current detection circuit for seamless transition between CCM, DCM, and AAM modes.
Functional safety is addressed via MPSafe™ QM qualification, with full protection including cycle-by-cycle current limiting (4–6A peak), hiccup-mode OVP/SCP, thermal shutdown at 170°C, and PG monitoring with 85–93% VFB threshold hysteresis. The device supports 100% duty cycle operation for ultra-low dropout and features mesh-connect flip-chip packaging optimized for EMI reduction per CISPR25 Class 5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage range | 2.5V to 6V - supports direct connection to automotive battery rails (cold-crank down to 2.5V) without pre-regulation |
| Max output current | 3A continuous - sufficient to power dual-core automotive SoCs or multi-rail PMIC front-ends |
| Switching frequency | 2.4MHz ±10% - enables use of compact 1μH inductors and reduces EMI fundamental below AM band |
| Feedback accuracy | ±1% over –40°C to +150°C - ensures stable core voltage under extreme under-hood thermal cycling |
| Quiescent current | 21μA in sleep mode - extends battery life in always-on telematics modules during vehicle sleep states |
| Thermal shutdown | 170°C with 20°C hysteresis - prevents latch-up while allowing safe recovery after transient overload |
| Power good threshold | 90% VFB rising / 85% VFB falling - provides precise, noise-immune rail validation for microcontroller reset sequencing |
Pinout & Package
MPQ2179AGQHE-AEC1-P is housed in a wettable-flank QFN-8 package (1.5mm × 2mm, 0.5mm pitch) with exposed thermal pad for enhanced PCB heat dissipation in automotive environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - PG | Open-drain power-good indicator | Signals valid regulation (VFB ≥ 90% VREF); requires external pull-up; sinks 1mA at 0.4V for reliable logic-level interfacing |
| 2 - VIN | Main input supply | Accepts 2.5V–6V; requires local ceramic decoupling to suppress high-frequency switching noise |
| 3 - SW | Switching node | Drain of internal P-channel HS-FET; connects directly to inductor; critical for EMI layout and thermal path |
| 4 - GND | Power and signal ground | Common return for all internal circuits; must be tied to thermal pad and low-impedance ground plane |
| 5 - EN | Enable control | Active-high logic (0.9V threshold); internal 2MΩ pulldown allows default-off behavior; supports power sequencing |
| 6 - SS | Soft-start timing | Connects to external capacitor (≥1nF) to linearly ramp output voltage and limit inrush current during startup |
| 7 - OUT | Output power rail | Delivers regulated VOUT to load; also serves as remote sense point for feedback loop stability |
| 8 - FB | Feedback input | Compares divided output voltage against 0.6V internal reference; sets regulation point via external resistor divider |
Key Features
| Feature | Design Value |
|---|---|
| Wettable flank QFN-8 | Enables automated optical inspection (AOI) of solder joints in automotive SMT lines, improving process yield and field reliability |
| Advanced Asynchronous Modulation (AAM) | Automatically engages under light load to reduce switching losses, achieving >85% efficiency at 1mA output |
| Integrated compensation network | Eliminates need for external type-II/type-III compensation components, reducing BOM count and board area by ≥3 parts |
| MPSafe™ QM qualification | Meets ISO 26262 ASIL-B readiness requirements for functional safety development processes (documentation available) |
| MeshConnect™ flip-chip packaging | Reduces parasitic inductance by 40% vs. wire-bond QFN, lowering radiated emissions and improving high-frequency stability |
Applications
| Automotive Infotainment Processor Supply | ADAS Camera Module Power |
|---|---|
|
Use Scenario: Powers 1.2V core rail of quad-core ARM-based infotainment SoC in digital cluster head unit. IC Role / Device Role / Timing Role: Primary buck regulator with power-good signaling for SoC reset assertion and boot sequence coordination. Use Value: 2.4MHz operation allows 1μH inductor size reduction by 60% vs. 500kHz alternatives, saving >12mm² PCB area in space-constrained dash designs. |
Use Scenario: Supplies 1.8V I/O and 1.1V core to CMOS image sensor and ISP in rear-view camera module. IC Role / Device Role / Timing Role: High-efficiency point-of-load regulator with soft-start to prevent sensor initialization glitches during vehicle ignition. Use Value: 21μA sleep current extends battery backup runtime to >72 hours during vehicle off-state, meeting OEM parking-mode requirements. |
| Automotive Telematics Control Unit (TCU) | Keyless Entry System Transceiver Supply |
|
Use Scenario: Generates 3.3V supply for LTE modem, GNSS receiver, and CAN FD controller in cellular-connected TCU. IC Role / Device Role / Timing Role: Input-robust buck converter handling cold-crank (2.5V) and load-dump (6.5V) transients without dropout or latch-up. Use Value: Integrated 65mΩ/35mΩ MOSFETs deliver >92% peak efficiency at 2A, reducing thermal load in sealed plastic enclosures. |
Use Scenario: Provides regulated 2.5V rail for UWB transceiver IC in smart key fob with ultra-low standby power budget. IC Role / Device Role / Timing Role: Always-on buck converter with enable-controlled shutdown and fast wake-up (<100µs EN-to-SW delay). Use Value: 100% duty cycle capability maintains regulation during battery voltage sag to 2.5V, ensuring uninterrupted RF transmission. |
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 |
|---|---|---|---|
| TPS6286418RTER | Higher 4A rating, 3.2MHz fSW, but only AEC-Q100 Grade 2 (–40°C to +105°C TJ), no wettable flank package | Suitable for non-under-hood applications where junction temperature stays below 105°C | Select if higher current headroom is needed and thermal derating permits Grade 2 operation |
| MAX20404ATCA/VY+ | Includes I²C programmability and telemetry, but larger 12-pin TQFN, 1.2MHz fSW, and 2.5A max output | Better for systems requiring dynamic voltage scaling or real-time fault logging | Choose when digital configurability outweighs size and efficiency trade-offs |
Compared with TPS6286418RTER and MAX20404ATCA/VY+, MPQ2179AGQHE-AEC1-P offers superior thermal robustness (Grade 1, +150°C), smaller footprint (QFN-8), and lower quiescent current-making it optimal for space- and temperature-constrained automotive domains where analog simplicity and proven reliability are prioritized over programmability.
Availability
MPQ2179AGQHE-AEC1-P 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 production support.
Supply support for MPQ2179AGQHE-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 design centers in the US, China, and Taiwan, and global manufacturing partnerships.
The MPQ2179A product line targets automotive power conversion with emphasis on AEC-Q100 qualification, functional safety readiness (MPSafe™ QM), and EMI-optimized packaging for demanding in-vehicle environments.
FAQ
What is the maximum allowable input voltage for MPQ2179AGQHE-AEC1-P?
The absolute maximum input voltage is +6.5V for durations under 10ns; the recommended operating range is 2.5V to 6V. Exceeding 6V continuously triggers absolute VIN over-voltage protection at 6.1V, which disables switching until voltage drops below 5.94V (160mV hysteresis). This protects against load-dump transients in 12V automotive systems.
Does MPQ2179AGQHE-AEC1-P support adjustable output voltage?
Yes - the device supports adjustable output via external resistor divider on the FB pin, with regulation down to 0.6V (set by internal 0.6V reference). Fixed-output variants exist (e.g., 1.2V, 1.8V), but this part number is the base adjustable version; output voltage is determined solely by R1/R2 ratio per standard buck feedback equations.
How does the power-good (PG) pin behave during startup and fault conditions?
PG asserts high (open-drain pulled up externally) when FB voltage exceeds 90% of 0.6V (i.e., ≥540mV) and remains high until FB falls below 85% (≤510mV). It features 80µs delay on both edges and sinks 1mA at 0.4V. During OVP or thermal shutdown, PG deasserts within 2µs of fault detection, providing deterministic system-level fault signaling.
Can MPQ2179AGQHE-AEC1-P operate in 100% duty cycle mode?
Yes - the device supports 100% duty cycle operation when VIN approaches VOUT, enabling dropout as low as 100mV at 3A (limited by RDS(ON)_HS). This is critical for maintaining regulation during cold-crank events where battery voltage dips to 2.5V while powering a 2.5V rail.
What thermal performance can be expected on a standard 4-layer PCB?
On the EVQ2179A-QH-00A evaluation board (4-layer, 6.3cm×6.3cm, 2oz copper), θJA is 59°C/W and θJC is 14°C/W. At 3A output with VIN=5V and VOUT=1.2V, case temperature rise is ≤25°C above ambient - confirming suitability for sealed enclosures without forced airflow.
Is external compensation required for stable operation?
No - the MPQ2179AGQHE-AEC1-P integrates a complete compensation network, eliminating external type-II or type-III compensation components. Stability is guaranteed with standard 1μH inductors and 22μF output capacitance; no loop compensation calculations or component selection are needed.
What protection features are implemented in hardware versus firmware?
All protections - cycle-by-cycle current limiting, output over-voltage (115% VFB), input over-voltage (6.1V), thermal shutdown (170°C), and hiccup-mode short-circuit response - are fully hardware-based with no firmware dependency. PG status and EN control remain functional during all fault states for fail-safe system management.
MPQ2179AGQHE-AEC1-P 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-P FAQ
1.How can I place an order for MPQ2179AGQHE-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ2179AGQHE-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 MPQ2179AGQHE-AEC1-P reliable?
The price and inventory of MPQ2179AGQHE-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 MPQ2179AGQHE-AEC1-P is usually 5 days.
3.What payment methods are accepted for MPQ2179AGQHE-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ2179AGQHE-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ2179AGQHE-AEC1-P?
MPQ2179AGQHE-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ2179AGQHE-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 MPQ2179AGQHE-AEC1-P?
For technical support, including MPQ2179AGQHE-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ2179AGQHE-AEC1-P requirements.
6.How does Aetrix verify that MPQ2179AGQHE-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPQ2179AGQHE-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 MPQ2179AGQHE-AEC1-P meets industry standards.
7.What is the process for return or replacement of MPQ2179AGQHE-AEC1-P?
All MPQ2179AGQHE-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ2179AGQHE-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 MPQ2179AGQHE-AEC1-P part is unused and in its original packaging.
Return procedure for MPQ2179AGQHE-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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