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Monolithic Power Systems Inc. MPQ2177AGQHE-AEC1-Z
- Part No.:
- MPQ2177AGQHE-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 8-VFDFN
- Datasheet:
-
MPQ2177AGQHE-AEC1-Z.pdf
- Description:
- IC REG BUCK ADJ 1A 8QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,456
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Product details
Overview
MPQ2177AGQHE-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified synchronous step-down DC/DC converter delivering up to 1A continuous output current across a 2.5V–5.5V input range, with 0.6V adjustable output voltage, 2.4MHz switching frequency, and integrated 75mΩ/45mΩ MOSFETs. It serves as the primary power supply for automotive infotainment processors, camera modules, and telematics ECUs requiring high efficiency and robust fault protection.
For engineers reviewing the MPQ2177AGQHE-AEC1-Z datasheet, MPQ2177AGQHE-AEC1-Z pinout, MPQ2177AGQHE-AEC1-Z application, or MPQ2177AGQHE-AEC1-Z equivalent, key selection criteria include its -40°C to +150°C junction temperature rating, 1% FB accuracy, 21μA sleep-mode quiescent current, AAM light-load modulation, and wettable-flank QFN-8 package for automated optical inspection in automotive production.
Technical Context
The MPQ2177AGQHE-AEC1-Z uses constant-on-time (COT) control with VIN feed-forward to maintain stable 2.4MHz switching across input and load variations, enabling fast transient response without external compensation. Its internal architecture integrates a P-channel high-side MOSFET (75mΩ typical) and N-channel low-side MOSFET (45mΩ typical), supporting 100% duty cycle operation for low-dropout regulation down to 0.6V.
Fault management includes cycle-by-cycle peak/valley current limiting (2.5A/1A typ), thermal shutdown at 170°C, hiccup-mode short-circuit protection, and programmable power-good monitoring with 85–90% VFB thresholds. Soft-start is externally controlled via a capacitor on the SS pin, while EN enables precise power sequencing with 0.65V/0.9V logic thresholds and internal 2MΩ pull-down.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 5.5V - supports direct connection to automotive battery rails including cold-crank (2.5V) and load-dump transients (5.5V). |
| Output Current | 1A continuous - sufficient for powering dual-core microcontrollers, image sensors, or CAN transceivers in compact automotive modules. |
| Switching Frequency | 2.4MHz ±10% - enables use of small 2.2μH inductors and reduces EMI filtering footprint in space-constrained PCB layouts. |
| Feedback Accuracy | ±1% at TJ = 25°C - ensures tight output regulation critical for sensitive analog circuitry and ADC references. |
| Quiescent Current | 21μA in sleep mode - extends battery life in always-on vehicle systems such as key fobs and occupancy sensors. |
| Junction Temp Range | -40°C to +150°C - meets AEC-Q100 Grade 1 requirements for under-hood and dashboard-mounted electronics. |
| Package | QFN-8 (1.5mm × 2mm) with wettable flanks - supports automated optical inspection (AOI) and improves solder joint reliability in automotive reflow processes. |
Pinout & Package
MPQ2177AGQHE-AEC1-Z is housed in a thermally enhanced, wettable-flank QFN-8 package (1.5mm × 2mm, 0.5mm pitch) with exposed thermal pad. The package supports high-power density designs and facilitates thermal dissipation in automotive environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - PG | Open-drain power-good indicator | Signals valid regulation when FB reaches 90% of 0.6V reference; requires external pull-up for system reset or sequencing logic. |
| 2 - VIN | Main input supply | Accepts 2.5V–5.5V; must be decoupled with ≥10μF ceramic capacitor near pin to suppress high-frequency ripple and EMI. |
| 3 - SW | Switch node | Connects to inductor; carries high dv/dt switching waveform - layout requires minimized loop area to reduce radiated emissions. |
| 4 - GND | Power and signal ground | Primary return path; must be connected to thermal pad and adjacent to VIN/OUT capacitors for low-impedance grounding. |
| 5 - EN | Enable control input | Digital ON/OFF control with 0.65V/0.9V thresholds; internal 2MΩ pull-down allows floating for default-off operation. |
| 6 - SS | Soft-start timing control | Charged by 3μA internal current source; 1nF capacitor yields ~0.2ms ramp time to prevent inrush current during startup. |
| 7 - OUT | Regulated output rail | Delivers regulated VOUT; connects to output capacitor (≥22μF) and load; internal discharge MOSFET actively discharges COUT on shutdown. |
| 8 - FB | Feedback voltage sense | Monitors output via resistor divider; compares to 0.6V internal reference to regulate VOUT from 0.6V to VIN–0.5V. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive applications operating from -40°C to +150°C junction temperature with full reliability testing. |
| Advanced Asynchronous Modulation (AAM) | Enables >85% efficiency at 1mA load by dynamically adjusting switching frequency and minimizing gate drive losses. |
| Integrated compensation network | Eliminates need for external Type-II/III compensation components, reducing BOM count and design validation effort. |
| MeshConnect™ flip-chip packaging | Reduces parasitic inductance and improves thermal resistance (θJC = 25°C/W), enhancing EMC performance and power density. |
| Programmable power-good (PG) with 80ms delay | Provides clean system-level power sequencing signal with hysteresis to avoid false triggering during line/load transients. |
Applications
| Automotive Instrument Clusters | ADAS Camera Modules |
|---|---|
Use Scenario: Powering TFT-LCD display drivers, microcontroller units, and backlight LED drivers in digital dashboards. IC Role / Device Role / Timing Role: Primary 3.3V/5V point-of-load regulator supplying core logic and analog peripherals with tight voltage tolerance. Use Value: 1% FB accuracy and -40°C to +150°C operation ensure consistent display brightness and MCU clock stability across extreme ambient conditions. | Use Scenario: Supplying image sensor (e.g., Sony IMX series), ISP, and MIPI interface in forward-facing or cabin-monitoring cameras. IC Role / Device Role / Timing Role: High-efficiency 1.2V/1.8V rail generator with fast load-transient response to handle burst-mode sensor readout. Use Value: 2.4MHz switching and COT control limit output voltage deviation to <±15mV during 100mA–1A load steps, preserving image integrity. |
| Automotive Telematics Control Units | Keyless Entry Transceivers |
Use Scenario: Providing stable 1.1V core and 3.3V I/O rails for LTE/C-V2X modems, GNSS receivers, and secure boot MCUs. IC Role / Device Role / Timing Role: Dual-rail power manager with independent EN/PG control for safe modem initialization and firmware update sequencing. Use Value: External soft-start and pre-biased startup enable reliable boot after deep-sleep wake events without brown-out resets. | Use Scenario: Powering UWB transceivers and low-power BLE SoCs in passive entry systems with ultra-low standby current budgets. IC Role / Device Role / Timing Role: Always-on 3.3V regulator with 21μA sleep IQ and fast wake-up (<100μs EN-to-SW activation) for responsive door unlock. Use Value: AAM mode maintains >80% efficiency at 100μA load, extending coin-cell or supercapacitor lifetime beyond 5 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62840DLCR | Lower IQ (300nA), but only 0.6A output; 2.5V–6V input; no PG or SS pins; QFN-8 (2mm×2mm) | Better for ultra-low-power IoT nodes; unsuitable for 1A automotive loads or systems requiring power sequencing. | Select only if load current ≤0.6A and PG/SS functionality is not required. |
| LM61480QRNLRQ1 | Higher current (8A), larger QFN-16 (3mm×4.5mm); 3.5V–36V input; no AAM; higher IQ (15μA active) | Designed for high-power ADAS domain controllers; over-engineered and cost-prohibitive for sub-1A infotainment rails. | Choose only when scaling to multi-amp loads or wider input ranges; not drop-in compatible. |
Compared with TPS62840DLCR and LM61480QRNLRQ1, MPQ2177AGQHE-AEC1-Z uniquely balances 1A capability, AEC-Q100 compliance, 21μA sleep IQ, and compact wettable-flank QFN-8 - making it optimal for cost-sensitive, space-constrained automotive subsystems requiring precise sequencing and robust fault handling.
Availability
MPQ2177AGQHE-AEC1-Z is available at Aetrix Electronics and suitable for automotive instrument clusters, ADAS camera modules, and telematics control units requiring stable component supply with full AEC-Q100 traceability and long-term production support.
Supply support for MPQ2177AGQHE-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 for automotive, industrial, and consumer markets, with over 20 years of analog design expertise.
The MPQ2177A product line delivers AEC-Q100-qualified, high-frequency synchronous buck converters optimized for space-constrained automotive electronics where thermal performance, EMI robustness, and functional safety readiness are critical.
FAQ
What is the minimum recommended soft-start capacitor value for MPQ2177AGQHE-AEC1-Z?
The datasheet specifies a minimum soft-start capacitance of 1nF. Using a 1nF capacitor with the internal 3μA charge current yields a soft-start time of approximately 0.2ms, which prevents inrush current while ensuring reliable startup under varying input and load conditions. Larger values extend ramp time linearly and may be used to coordinate with other power rails.
Does MPQ2177AGQHE-AEC1-Z support pre-biased output startup?
Yes. The device supports pre-biased startup: when EN is pulled high, the internal soft-start circuit initiates regardless of existing voltage on the OUT pin. This avoids reverse-current flow into a pre-charged output rail and ensures safe, controlled turn-on even when downstream circuitry remains powered.
How does the power-good (PG) pin behave during undervoltage or overvoltage events?
PG asserts high when FB voltage exceeds 90% of the 0.6V reference and de-asserts low when FB falls below 85%. During OVP (VFB > 115% VREF), the converter enters dynamic regulation and PG remains low until regulation recovers. PG has an 80ms delay on both edges to reject noise-induced glitches.
What thermal derating applies to the 1A output current rating?
The 1A rating assumes TA = 25°C on a 4-layer JEDEC board (EVQ2177A-LE-00A). With θJA = 59°C/W, maximum ambient temperature before thermal shutdown (170°C) is ~125°C at 1A. For sustained 1A operation in enclosed automotive enclosures, board-level thermal design (copper area, vias to inner layers) is essential to maintain junction temperature within limits.
Can MPQ2177AGQHE-AEC1-Z operate with 100% duty cycle, and under what conditions?
Yes. The device supports 100% duty cycle in dropout mode when VIN approaches VOUT + diode drop (≈ VOUT + 0.1V). This occurs automatically when the high-side FET remains continuously on, enabling regulation down to VOUT = VIN – 0.5V per datasheet specifications - critical for maintaining output during automotive cold-crank events.
Is the wettable flank feature mandatory for automotive assembly, or optional?
The wettable flank is not optional for automotive-grade assembly: it enables automated optical inspection (AOI) of solder joints on bottom-terminated QFN packages, a requirement for IPC-A-610 Class 3 and IATF 16949-compliant manufacturing. Standard QFN-8 variants without wettable flanks do not meet AEC-Q100 assembly verification standards.
How does Advanced Asynchronous Modulation (AAM) improve light-load efficiency compared to standard PFM?
AAM dynamically adjusts switching frequency while maintaining COT control and zero-current detection, achieving >85% efficiency at 1mA load. Unlike basic PFM, AAM retains fast transient response and avoids subharmonic oscillation, making it suitable for automotive systems with variable, low-duty-cycle loads like sensor polling or CAN bus wakeup events.
MPQ2177AGQHE-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:
- 1A
- 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)
MPQ2177AGQHE-AEC1-Z FAQ
1.How can I place an order for MPQ2177AGQHE-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ2177AGQHE-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 MPQ2177AGQHE-AEC1-Z reliable?
The price and inventory of MPQ2177AGQHE-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 MPQ2177AGQHE-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ2177AGQHE-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ2177AGQHE-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ2177AGQHE-AEC1-Z?
MPQ2177AGQHE-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ2177AGQHE-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 MPQ2177AGQHE-AEC1-Z?
For technical support, including MPQ2177AGQHE-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ2177AGQHE-AEC1-Z requirements.
6.How does Aetrix verify that MPQ2177AGQHE-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ2177AGQHE-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 MPQ2177AGQHE-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ2177AGQHE-AEC1-Z?
All MPQ2177AGQHE-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ2177AGQHE-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 MPQ2177AGQHE-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ2177AGQHE-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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