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Monolithic Power Systems Inc. MPQ2166GRHE-AEC1-Z
- Part No.:
- MPQ2166GRHE-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 18-PowerVFQFN
- Datasheet:
-
MPQ2166GRHE-AEC1-Z.pdf
- Description:
- IC REG BUCK ADJ DL 18QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,232
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Product details
Overview
MPQ2166GRHE-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade-1 qualified dual synchronous buck regulator supporting 2A/2A or 3A/1A output configurations, operating from 2.7V–6V input with 0.6V–5.5V adjustable output, 60µA quiescent current, and integrated 55mΩ/20mΩ MOSFETs - designed for automotive infotainment, clusters, and telematics power rails.
For engineers reviewing the MPQ2166GRHE-AEC1-Z datasheet, MPQ2166GRHE-AEC1-Z pinout, MPQ2166GRHE-AEC1-Z application, or MPQ2166GRHE-AEC1-Z equivalent, key selection criteria include dual-channel phase-shifted operation, wettable flank QFN-18 (2.5mm×3.5mm) packaging, AAM/FCCM mode control via CCM pin, PG status per channel, and external soft-start programmability - all critical for automotive-grade power integrity and thermal reliability.
Technical Context
The MPQ2166GRHE-AEC1-Z implements peak-current-mode control with internal compensation per channel, enabling fast transient response and cycle-by-cycle over-current protection. Its 180° out-of-phase switching reduces input ripple and allows smaller input capacitors.
It supports dual independent operation modes: Advanced Asynchronous Modulation (AAM) for ultra-low IQ (60µA) at light/no load, and Forced Continuous Conduction Mode (FCCM) for fixed-frequency, low-noise regulation - with VOUT limited to 0.5×VIN in FCCM. Both channels support 100% duty cycle for low-dropout operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 6V - compatible with single-cell Li+ battery systems and automotive 5V rail derivatives. |
| Output Current Config | 2A/2A or 3A/1A - configurable per-channel current capability enables flexible power partitioning across SoC cores and peripherals. |
| RDS(ON) (HS/LS) | 55mΩ / 20mΩ - integrated MOSFETs eliminate need for external Schottky diodes and reduce conduction losses. |
| Quiescent Current | 60µA - enables >10-year battery standby in always-on automotive modules without compromising start-up behavior. |
| Switching Frequency | Up to 3MHz (externally syncable) - supports compact 0.68µH inductors and minimizes solution footprint. |
| Power Good Accuracy | ±5% window (0.82–0.95×VREF) - provides robust output voltage monitoring with hysteresis for reliable system sequencing. |
| Thermal Shutdown | 175°C with 40°C hysteresis - protects against sustained overload while allowing safe recovery after cooling. |
Pinout & Package
MPQ2166GRHE-AEC1-Z uses a wettable flank QFN-18 package (2.5mm × 3.5mm), optimized for automated optical inspection (AOI) and high-reliability solder joint formation in automotive PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND1 / PGND2 | Power ground (Ch1/Ch2) | Separate low-impedance return paths for each channel; must be externally shorted to minimize ground bounce and EMI. |
| SW1 / SW2 | Switch node (Ch1/Ch2) | Direct connection to internal high-/low-side MOSFETs; requires tight layout with minimal loop area to suppress voltage spikes. |
| VIN1 / VIN2 | Input supply (Ch1/Ch2) | Independent inputs allow split-rail sourcing or redundancy; decoupling caps must be placed <1mm from pins. |
| FB1 / FB2 | Feedback input (Ch1/Ch2) | 0.6V reference comparator input; sets output via resistive divider - tolerance directly impacts VOUT accuracy (±2% over temp). |
| SS1 / SS2 | Soft-start capacitor node (Ch1/Ch2) | Externally programmable ramp rate (via CSS); prevents inrush current and output overshoot during power-up. |
| EN1 / EN2 | Enable control (Ch1/Ch2) | Digital on/off control with 0.4V/1.6V thresholds; supports independent channel sequencing and fault isolation. |
| PG1 / PG2 | Power-good open-drain (Ch1/Ch2) | Indicates regulation status (90%/82% VREF thresholds); requires external pull-up for system-level power sequencing logic. |
| CCM | Mode control | Low = AAM (high efficiency at light load); High = FCCM (fixed frequency, lower ripple); floating prohibited. |
| FREQ | Frequency set/sync input | Resistor-programmable oscillator (350kHz–3MHz) or external clock sync input; enables EMI reduction via spread-spectrum alignment. |
| VCC | Internal bias supply | Regulated internal rail; must be tied to VIN1/VIN2 externally - not intended for independent powering. |
| AGND | Analog ground | Reference for FB, SS, and internal error amplifiers; must be connected to PGND externally with low-inductance path. |
Key Features
| Feature | Design Value |
|---|---|
| 180° phase-shifted dual-channel operation | Reduces input RMS current by ~30%, enabling smaller input bulk capacitors and lower EMI filter cost. |
| Wettable flank QFN-18 (2.5mm×3.5mm) | Enables full-solder-joint inspection via AOI - critical for zero-defect automotive manufacturing compliance. |
| AEC-Q100 Grade-1 qualification (−40°C to +125°C TJ) | Validated for under-hood automotive environments with guaranteed parametric performance across full junction temperature range. |
| Hiccup-mode short-circuit protection | Automatically cycles shutdown/restart during sustained overload - prevents thermal runaway while preserving system visibility. |
| Adjustable advanced asynchronous modulation (AAM) | Extends battery life in always-on modules by reducing switching losses at sub-10mA loads without sacrificing startup stability. |
| External soft-start and tracking capability | Allows precise coordination of multiple rails (e.g., core vs. I/O) using shared SS capacitor or resistor-divider networks. |
Applications
| Automotive Infotainment | Automotive Clusters |
|---|---|
Use Scenario: Powering multi-core application processors (e.g., NXP i.MX8, Renesas R-Car) and DDR memory in head-unit systems. IC Role / Device Role / Timing Role: Dual-channel buck regulator delivering 1.1V@3A (core) and 1.8V@2A (memory I/O) with independent enable and PG signaling. Use Value: Phase-shifted operation cuts input capacitor size by 40%; AAM mode extends display-off battery runtime beyond 30 days. |
Use Scenario: Supplying instrument cluster MCU, TFT LCD bias, and CAN transceiver rails in digital dashboards. IC Role / Device Role / Timing Role: Configured as 3A/1A to drive 3.3V cluster MCU and 5V LCD backlight driver simultaneously. Use Value: Wettable flank package ensures solder joint reliability under thermal cycling; PG outputs enable fail-safe display blanking on rail fault. |
| Automotive Telematics | Battery-Powered Devices |
Use Scenario: Powering LTE/C-V2X modems, GNSS receivers, and secure boot MCUs in telematics control units (TCUs). IC Role / Device Role / Timing Role: Dual regulated outputs: 1.2V@2A for modem baseband and 3.3V@2A for RF front-end and security IC. Use Value: 60µA quiescent current meets ISO 16750-2 "parking mode" leakage requirements; FCCM mode ensures clean RF power during data bursts. |
Use Scenario: Power management in portable medical monitors (e.g., ECG, pulse oximeters) with rechargeable Li+ batteries. IC Role / Device Role / Timing Role: Single-chip solution replacing discrete DC/DC + LDO combos for analog sensor, digital logic, and display subsystems. Use Value: 2.7V min input supports battery discharge down to 2.8V; 100% duty cycle maintains regulation during brownout events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ2166GRH-AEC1-Z | Same silicon, non-wettable flank QFN-18 (2.5mm×3.5mm); no side-wall solder fillet for AOI. | Lacks automated optical inspection capability - unsuitable for Tier-1 automotive production requiring IPC-A-610 Class 3 solder validation. | Select only for cost-sensitive non-AOI applications where manual X-ray or functional test suffices. |
| TPS6521905RGER | TI dual buck (3A/3A), 2.7V–5.5V, 12µA IQ, but no AAM mode; requires external FETs for >1.5A per channel. | Higher integration (integrated LDOs, sequencer) but larger solution size and less efficient at ultra-light loads. | Prefer when system-level power sequencing and mixed-rail integration outweigh footprint and light-load efficiency needs. |
Compared with MPQ2166GRHE-AEC1-Z, the GRH-AEC1-Z sacrifices AOI compatibility for marginal BOM cost reduction, while the TPS6521905RGER trades higher IQ and external FET complexity for broader feature integration - making the MPQ2166GRHE-AEC1-Z optimal for space-constrained, battery-sensitive automotive modules requiring certified manufacturability.
Availability
MPQ2166GRHE-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment, instrument clusters, and telematics systems requiring stable component supply, AEC-Q100 compliance, and wettable flank package assurance.
Supply support for MPQ2166GRHE-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 analog and power ICs, with design centers in the US, China, and Taiwan, and global distribution through authorized partners.
The MPQ2166 product line delivers AEC-Q100-qualified dual buck regulators targeting automotive subsystems requiring ultra-low IQ, small footprint, and robust thermal performance - especially in space- and power-constrained domains like digital cockpits and ADAS edge nodes.
FAQ
What is the maximum allowable input voltage for MPQ2166GRHE-AEC1-Z?
The absolute maximum input voltage is 6.5V, but the recommended operating range is 2.7V to 6V. Exceeding 6V risks permanent damage to internal MOSFETs and gate drivers, and violates AEC-Q100 stress limits - operation above 6V is not characterized or guaranteed.
How does the CCM pin affect efficiency and noise performance?
Pulling CCM low enables Advanced Asynchronous Modulation (AAM), reducing IQ to 60µA and improving light-load efficiency (>85% at 1mA), but increases output voltage ripple. Pulling CCM high forces Continuous Conduction Mode (FCCM), fixing switching frequency and lowering ripple, at the cost of higher 50µA shutdown current and reduced light-load efficiency.
Can MPQ2166GRHE-AEC1-Z operate with only one channel enabled?
Yes - EN1 and EN2 are independently controlled. Disabling one channel (e.g., pulling EN2 ≤0.4V) fully shuts down its power stage, reducing total IQ to ~35µA. The active channel retains full functionality including PG, SS, and phase-shifted operation if both channels were previously synchronized.
What is the purpose of the AGND pin, and how should it be routed?
AGND is the dedicated analog reference ground for FB, SS, and internal error amplifiers. It must be connected to PGND with a low-inductance, wide copper trace - not via vias or narrow traces - to prevent noise coupling into feedback paths and ensure ±2% output voltage accuracy across temperature.
Does MPQ2166GRHE-AEC1-Z support output voltages below 0.6V?
No - the internal reference is fixed at 0.6V, and the FB comparator is specified only down to 0.6V. Output voltages below 0.6V are not supported; attempting to set VOUT < 0.6V results in loss of regulation and potential instability due to insufficient error amplifier headroom.
How is thermal performance validated for this AEC-Q100 Grade-1 part?
Thermal shutdown is guaranteed at 175°C (TD) with 40°C hysteresis, and θJA is characterized at 50°C/W on JESD51-7 4-layer PCB. Real-world derating is confirmed via case temperature rise curves (Figure 11), showing ≤16°C rise at 2A/channel on standard EVB - meeting Grade-1 junction limit of +125°C at +85°C ambient.
Is external synchronization mandatory for stable dual-channel operation?
No - internal oscillator provides stable 180° phase-shifted operation without external SYNC. However, SYNC is required to align switching edges with system clocks (e.g., for EMI reduction or noise avoidance in camera/ADAS subsystems), and must be applied before startup and maintained until shutdown.
MPQ2166GRHE-AEC1-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MPQ
- Package/Case:
- 18-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 2A/2A, 3A/1A
- Frequency - Switching:
- 350kHz ~ 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 18-QFN (2.5x3.5)
MPQ2166GRHE-AEC1-Z FAQ
1.How can I place an order for MPQ2166GRHE-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ2166GRHE-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 MPQ2166GRHE-AEC1-Z reliable?
The price and inventory of MPQ2166GRHE-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 MPQ2166GRHE-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ2166GRHE-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ2166GRHE-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ2166GRHE-AEC1-Z?
MPQ2166GRHE-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ2166GRHE-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 MPQ2166GRHE-AEC1-Z?
For technical support, including MPQ2166GRHE-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ2166GRHE-AEC1-Z requirements.
6.How does Aetrix verify that MPQ2166GRHE-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ2166GRHE-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 MPQ2166GRHE-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ2166GRHE-AEC1-Z?
All MPQ2166GRHE-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ2166GRHE-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 MPQ2166GRHE-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ2166GRHE-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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