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Monolithic Power Systems Inc. MPQ2177AGQHE-AEC1-P
- Part No.:
- MPQ2177AGQHE-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 8-VFDFN
- Datasheet:
-
MPQ2177AGQHE-AEC1-P.pdf
- Description:
- IC REG BUCK ADJ 1A 8QFN
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
MPQ2177AGQHE-AEC1-P 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 fixed switching frequency, and integrated 75mΩ/45mΩ MOSFETs. It serves as the primary power rail regulator in automotive infotainment head units requiring high efficiency, compact footprint, and robust fault protection.
For engineers reviewing the MPQ2177AGQHE-AEC1-P datasheet, MPQ2177AGQHE-AEC1-P pinout, MPQ2177AGQHE-AEC1-P application, or MPQ2177AGQHE-AEC1-P equivalent, key selection criteria include its -40°C to +150°C junction temperature rating, 1% FB accuracy, 21μA sleep-mode quiescent current, wettable-flank QFN-8 (1.5mm×2mm) package for automated optical inspection, and integrated soft-start, power-good, and hiccup-mode SCP.
Technical Context
The MPQ2177AGQHE-AEC1-P employs 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 P-channel HS-FET (75mΩ) and N-channel LS-FET (45mΩ), eliminating external power switches and reducing conduction losses.
Fault management includes cycle-by-cycle peak/valley current limiting (2.5A/1A), thermal shutdown at 170°C, output over-voltage protection at 115% VREF, and power-good monitoring with 80ms delay and 90%/85% VREF thresholds. The device supports pre-biased start-up and output discharge via internal 150Ω switch.
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 (5.5V) conditions. |
| Output Current | 1A continuous - Sustains full-rated load at TJ = +150°C with proper PCB thermal design per θJA = 130°C/W. |
| Switching Frequency | 2.4MHz ±10% - Enables use of small 2.2μH inductors and reduces EMI filtering requirements in space-constrained modules. |
| Feedback Accuracy | ±1% at TJ = 25°C; ±0.15% over -40°C to +150°C - Ensures tight output regulation for sensitive SoCs and display drivers. |
| Quiescent Current | 21μA in sleep mode - Extends battery life in always-on telematics and key fob applications during standby. |
| Thermal Shutdown | 170°C with 20°C hysteresis - Provides reliable over-temperature protection while allowing safe operation near automotive under-hood limits. |
| Power Good Threshold | Rising: 90% VREF; Falling: 85% VREF - Delivers precise sequencing margin for downstream processors and FPGAs. |
Pinout & Package
MPQ2177AGQHE-AEC1-P is housed in a wettable-flank QFN-8 package (1.5mm × 2mm, 0.5mm pitch), optimized for solder joint inspection and thermal performance (θJC = 25°C/W). The flip-chip MeshConnect™ construction enhances EMC behavior and reduces parasitic inductance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - PG | Open-drain power-good indicator | Signals valid regulation (VFB ≥ 90% VREF); requires external pull-up; 80ms delay ensures stable startup before system enable. |
| 2 - VIN | Main input supply | Accepts 2.5V–5.5V; must be decoupled with ≥10μF ceramic capacitor close to pin to suppress switching noise and input transients. |
| 3 - SW | Switch node | Drain of internal P-channel HS-FET; connects directly to inductor; high dv/dt demands short, low-inductance layout. |
| 4 - GND | Power and signal ground | Primary thermal and electrical reference; must be connected to large copper pour for heat dissipation and noise control. |
| 5 - EN | Enable control input | Logic-high (>0.9V) enables converter; internal 2MΩ pull-down allows floating-disable; supports precise power sequencing. |
| 6 - SS | Soft-start timing node | Charged at 3μA; sets ramp time via external capacitor (≥1nF); prevents inrush current and output overshoot. |
| 7 - OUT | Regulated output rail | Delivers up to 1A; connects to load and output capacitor (e.g., 22μF); internal discharge path activates on shutdown. |
| 8 - FB | Feedback sense input | Monitors output via resistor divider; compares to 0.6V internal reference; sets VOUT = 0.6V × (1 + R1/R2). |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive applications operating from -40°C to +150°C junction temperature, meeting stress test requirements for reliability in harsh environments. |
| Integrated MOSFETs and compensation | Eliminates 4 external components (HS/LS switches, bootstrap diode, compensation network), reducing BOM count and board area by >30% vs discrete solutions. |
| Advanced Asynchronous Modulation (AAM) | Automatically transitions to discontinuous conduction mode under light loads, maintaining >85% efficiency at 1mA while minimizing audible noise. |
| Wettable-flank QFN package | Enables automated optical inspection (AOI) of solder joints on bottom-side terminations, improving manufacturing yield and field reliability in automotive production. |
| Hiccup-mode short-circuit protection | Enters controlled restart cycle upon SCP detection-discharges SS pin and re-attempts startup-preventing thermal runaway during sustained faults. |
Applications
| Automotive Infotainment Head Unit | ADAS Camera Module |
|---|---|
Use Scenario: Powers SoC, DDR memory, and display interface in a 10-inch touchscreen head unit operating across battery voltage fluctuations (6V–16V) and ambient temperatures (-40°C to +85°C). IC Role / Device Role / Timing Role: Primary 1.2V/1A core rail regulator with power-good signaling to coordinate processor boot sequence and prevent brown-out resets. Use Value: 2.4MHz switching allows use of 2.2μH shielded inductor (XFL4020-222MEB), reducing solution size by 40% versus 500kHz alternatives while maintaining >92% efficiency at 500mA. | Use Scenario: Supplies 1.8V/500mA to image sensor and ISP in a rear-view camera module mounted in vehicle trunk, exposed to vibration and thermal cycling. IC Role / Device Role / Timing Role: Secondary regulated rail with soft-start and output discharge to ensure clean power-up/down and eliminate residual voltage that could corrupt sensor initialization. Use Value: Integrated 150Ω discharge switch eliminates need for external MOSFET and gate driver, cutting component count and enabling faster, controlled VOUT ramp-down (<10ms) after power-off. |
| Automotive Telematics Control Unit | Keyless Entry Transmitter |
Use Scenario: Generates 3.3V/800mA for cellular modem, GNSS receiver, and microcontroller in a TCU installed behind dashboard, subject to EMI from HVAC motors and infotainment systems. IC Role / Device Role / Timing Role: High-EMI-immunity buck converter with MeshConnect™ flip-chip package and 2.4MHz fixed frequency to shift noise spectrum away from critical RF bands (e.g., LTE Band 13). Use Value: Measured conducted emissions meet CISPR 25 Class 5 limits without additional ferrite beads or shielding, reducing system-level validation time and cost. | Use Scenario: Powers ultra-low-power MCU and UWB transceiver in a vehicle key fob, where battery life must exceed 5 years with intermittent 10ms transmit bursts. IC Role / Device Role / Timing Role: Always-on 1.2V rail regulator entering 21μA sleep mode between wake events; enabled via EN pin synchronized to MCU wake signal. Use Value: Sleep-mode IQ enables >10-year shelf life on CR2032 coin cell; AAM mode maintains >80% efficiency down to 100μA load, avoiding linear regulator inefficiency. |
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 0.6A output; 2.5V–6V input; no integrated PG or SS; QFN-12 package (2mm×2mm) | Better for ultra-low-power IoT sensors; unsuitable for 1A automotive loads or systems requiring power sequencing. | Select only if load current ≤600mA and PG/SS functions are implemented externally. |
| LM61480QRNRRQ1 | Higher current (8A), 3.3V–36V input, 2.1MHz; larger HTSSOP-16 package; higher IQ (12μA in LP mode) | Targeted at engine control and body electronics; over-specified for infotainment rail; requires more board area and external compensation. | Choose only when scaling to multi-rail systems or higher input voltages beyond 5.5V. |
Compared with TPS62840DLCR and LM61480QRNRRQ1, MPQ2177AGQHE-AEC1-P uniquely balances 1A capability, AEC-Q100 Grade 1 compliance, wettable-flank packaging, and integrated PG/SS in a 1.5mm×2mm footprint-making it optimal for space-constrained, safety-critical automotive subsystems where full feature integration matters more than ultra-low IQ or wide VIN range.
Availability
MPQ2177AGQHE-AEC1-P is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and telematics control units requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for MPQ2177AGQHE-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 for automotive, industrial, cloud computing, and consumer markets, with design centers in the US, China, and Taiwan.
The MPQ2177A product line delivers compact, AEC-Q100-qualified buck converters targeting next-generation automotive electronics where thermal performance, EMI robustness, and functional safety compliance are mandatory.
FAQ
What is the minimum recommended soft-start capacitance for MPQ2177AGQHE-AEC1-P?
The minimum recommended soft-start capacitance is 1nF, connected between the SS pin and GND. This value ensures controlled output voltage ramp-up and prevents inrush current exceeding 1.5× rated output current. Using smaller values may cause overshoot or instability during startup, especially with pre-biased outputs.
Does MPQ2177AGQHE-AEC1-P support pre-biased start-up?
Yes, MPQ2177AGQHE-AEC1-P supports pre-biased start-up: when EN is pulled high, the device initiates soft-start regardless of existing voltage on the OUT pin. This avoids reverse current flow into the output capacitor and ensures reliable boot in systems with shared rails or backup supplies.
How does the power-good (PG) pin behave during undervoltage or overvoltage conditions?
The PG pin asserts high when FB voltage exceeds 90% of 0.6V reference (0.54V), and pulls low when FB drops below 85% (0.51V), with 80ms delay on both edges. During OVP (VFB > 115% VREF), PG remains asserted until regulation recovers; during UVLO (VIN < 2.3V), PG is forced low and stays low until VIN rises above 2.45V and regulation stabilizes.
Can MPQ2177AGQHE-AEC1-P operate with 100% duty cycle?
Yes, MPQ2177AGQHE-AEC1-P supports 100% duty cycle operation in dropout mode when VIN approaches VOUT + voltage drop across internal MOSFETs. This enables regulation down to VIN ≈ VOUT + 120mV (at 1A), critical for maintaining system operation during automotive cold-crank events where input may dip to 2.5V.
What is the purpose of the internal output discharge function?
The internal output discharge function activates automatically when EN is pulled low or VIN falls below UVLO threshold. It connects a 150Ω path between OUT and GND to rapidly discharge the output capacitor, preventing residual voltage from interfering with downstream logic states or causing latch-up during power cycling.
Is the QFN-8 package of MPQ2177AGQHE-AEC1-P compatible with standard reflow profiles?
Yes, the wettable-flank QFN-8 package is compatible with IPC/JEDEC J-STD-020D reflow profiles. Peak temperature must not exceed 260°C for ≤30 seconds, and moisture sensitivity level is MSL1-no baking required prior to assembly. The 0.5mm pitch and exposed thermal pad require precise stencil design for optimal solder paste release.
How does Advanced Asynchronous Modulation (AAM) improve light-load efficiency?
AAM dynamically reduces switching frequency under light loads by extending off-time until inductor current reaches zero, then skipping cycles. Combined with ZCD detection and reduced bias currents, this achieves >85% efficiency at 1mA-significantly outperforming forced-PWM competitors and eliminating audible coil whine in quiet automotive cabins.
MPQ2177AGQHE-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:
- 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-P FAQ
1.How can I place an order for MPQ2177AGQHE-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ2177AGQHE-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 MPQ2177AGQHE-AEC1-P reliable?
The price and inventory of MPQ2177AGQHE-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 MPQ2177AGQHE-AEC1-P is usually 5 days.
3.What payment methods are accepted for MPQ2177AGQHE-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ2177AGQHE-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ2177AGQHE-AEC1-P?
MPQ2177AGQHE-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ2177AGQHE-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 MPQ2177AGQHE-AEC1-P?
For technical support, including MPQ2177AGQHE-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ2177AGQHE-AEC1-P requirements.
6.How does Aetrix verify that MPQ2177AGQHE-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPQ2177AGQHE-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 MPQ2177AGQHE-AEC1-P meets industry standards.
7.What is the process for return or replacement of MPQ2177AGQHE-AEC1-P?
All MPQ2177AGQHE-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ2177AGQHE-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 MPQ2177AGQHE-AEC1-P part is unused and in its original packaging.
Return procedure for MPQ2177AGQHE-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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