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Monolithic Power Systems Inc. MPQ2169BGRHE-AEC1-Z
- Part No.:
- MPQ2169BGRHE-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 18-PowerVFQFN
- Datasheet:
-
MPQ2169BGRHE-AEC1-Z.pdf
- Description:
- IC REG BUCK ADJ 18QFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MPQ2169BGRHE-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified dual synchronous buck regulator supporting configurable output current ratings of 1.4A/1.4A or 2A/0.8A, 2.7V–6V input range, 0.6V–5.5V output voltage, 65µA quiescent current, and integrated 60mΩ HS-FETs / 25mΩ LS-FETs - deployed in automotive infotainment, clusters, and telematics systems powered by single-cell Li-ion batteries.
For engineers reviewing the MPQ2169BGRHE-AEC1-Z datasheet, MPQ2169BGRHE-AEC1-Z pinout, MPQ2169BGRHE-AEC1-Z application, or MPQ2169BGRHE-AEC1-Z equivalent, key selection considerations include dual-channel 180° out-of-phase operation for reduced input ripple, external frequency synchronization (0.35–3MHz), 100% duty cycle capability for low-dropout, and AEC-Q100 Grade 1 qualification for under-hood automotive environments.
Technical Context
The MPQ2169BGRHE-AEC1-Z implements peak current mode control with internal compensation per channel, enabling fast transient response without external loop components. Each channel features independent soft-start, power-good monitoring, and forced continuous conduction mode (FCCM) across full load range.
It supports 180° phase-shifted switching to minimize input capacitor RMS current, operates with external resistor-set (350kHz–2.59MHz) or SYNC-locked frequency, and integrates thermal shutdown (175°C trip, 40°C hysteresis), cycle-by-cycle overcurrent protection, and hiccup-mode short-circuit recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 6V - compatible with single-cell Li-ion (2.8V–4.2V) and automotive 5V rail systems |
| Output Voltage Range | 0.6V to 5.5V - supports core logic, memory, and I/O rails via external resistor divider |
| Max Output Current | Configurable: 1.4A/1.4A or 2A/0.8A per channel - enables flexible power partitioning for multi-rail SoC subsystems |
| Quiescent Current | 65µA - sustains ultra-low standby power in always-on automotive modules |
| Switching Frequency | 350kHz–2.59MHz (resistor-set) or 0.35–3MHz (SYNC) - allows EMI optimization and small passive sizing |
| HS/LS FET RDS(on) | 60mΩ / 25mΩ - enables >90% efficiency at 5V→1.8V/2A without external Schottky diode |
| Thermal Shutdown | 175°C with 40°C hysteresis - non-latching protection ensures automatic recovery after cooling |
| AEC-Q100 Grade | Grade 1 (−40°C to +125°C TJ) - validated for engine compartment proximity and dashboard mounting |
Pinout & Package
MPQ2169BGRHE-AEC1-Z is housed in a wettable flank QFN-18 package (2.5mm × 3.5mm, 0.5mm pitch), optimized for automated optical inspection (AOI) and thermal performance in automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PG2 | Open-drain power-good indicator (CH2) | Pulled high when VFB2 ≥ 90% of 0.6V reference; pulled low if VFB2 ≤ 82% - enables system-level fault detection |
| 2 PGND2 | Power ground for channel 2 | Must be externally tied to PGND1 and AGND with low-inductance copper pour - critical for noise immunity and current return path integrity |
| 3 SW2 | Channel 2 switch node | Connects to internal HS/LS FETs and external inductor - requires tight layout to minimize EMI and voltage spikes |
| 4 VIN2 | Channel 2 input supply | Requires local 10µF ceramic decoupling - shared input with VIN1/VCC but routed separately for noise isolation |
| 5 SS2 | External soft-start capacitor (CH2) | Capacitor value sets tSS = (CSS × 0.6V) / 3.2µA - default 0.5ms if left floating |
| 6 FB2 | Channel 2 feedback input | Compares output voltage against 0.6V internal reference - sets regulation point via R1/R2 divider |
| 7 AGND | Analog ground reference | Must be connected externally to both PGND1 and PGND2 - separates analog sensing from high-current power grounds |
| 8 VCC | Internal bias supply | Powered from VIN1/VIN2; requires 0.1–1µF decoupling to AGND - not intended for external sourcing |
| 9 FREQ | Resistor-set oscillator input | RFREQ to GND selects fSW: 560kΩ → 410kHz, 75kΩ → 2.29MHz - placed adjacent to pin for stability |
| 10 FB1 | Channel 1 feedback input | Identical function to FB2 - enables independent output voltage programming per channel |
| 11 SS1 | External soft-start capacitor (CH1) | Same timing equation as SS2 - supports staggered startup sequencing between channels |
| 12 VIN1 | Channel 1 input supply | Decoupled identically to VIN2 - shared input rail recommended unless isolation required |
| 13 SW1 | Channel 1 switch node | Matches SW2 layout requirements - 180° phase shift reduces total input ripple amplitude |
| 14 PGND1 | Power ground for channel 1 | Electrically tied to PGND2 on PCB - forms common high-current return for both channels |
| 15 PG1 | Open-drain power-good indicator (CH1) | Functionally identical to PG2 - allows independent channel health monitoring |
| 16 EN1 | Channel 1 enable input | Active-high: <0.8V = shutdown, >0.9V = enabled - must not float; no internal pull-up/down |
| 17 SYNC | External clock synchronization input | Accepts 0.35–3MHz CMOS clock; rising edge aligns CH1 clock - CH2 remains 180° out-of-phase |
| 18 EN2 | Channel 2 enable input | Independent control of CH2 - enables dynamic power gating for subsystems |
Key Features
| Feature | Design Value |
|---|---|
| 180° out-of-phase dual-channel operation | Reduces input capacitor RMS current by ~30%, enabling smaller 10µF ceramic input caps instead of bulk electrolytics |
| Integrated compensation network | Eliminates need for external Type-II/III compensation components - simplifies layout and reduces BOM count |
| MeshConnect™ flip-chip packaging | Improves thermal resistance (θJA = 34.8°C/W on EVB) and lowers EMI emissions outside AM band (0.53–1.6MHz) |
| Forced Continuous Conduction Mode (FCCM) | Maintains fixed switching frequency from zero to full load - ensures predictable EMI profile and low light-load output ripple |
| Wettable flank QFN-18 | Enables automated solder-joint inspection for automotive-grade manufacturing traceability and reliability assurance |
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +125°C junction temperature operation - meets automotive functional safety prerequisites for non-safety-critical power rails |
Applications
| Automotive Infotainment | Automotive Clusters |
|---|---|
Use Scenario: Powering SoC cores, DDR memory, and display interfaces in head-unit systems with strict EMI limits and thermal constraints. IC Role / Device Role / Timing Role: Dual-channel synchronous buck regulator delivering [email protected] (core) and [email protected] (I/O) with 180° phase shift. Use Value: 90% efficiency at 5V→1.1V/1.4A reduces thermal load in sealed enclosures; FCCM ensures stable ripple during audio playback. | Use Scenario: Supplying microcontroller, CAN transceiver, and TFT backlight drivers in digital instrument clusters with rapid startup requirements. IC Role / Device Role / Timing Role: Configured as 1.8V@2A (MCU) + [email protected] (backlight) with independent EN1/EN2 sequencing. Use Value: 65µA IQ extends battery runtime during vehicle sleep mode; PG1/PG2 signals enable safe boot sequence validation. |
| Automotive Telematics | Battery-Powered Devices |
Use Scenario: Providing regulated rails for LTE modem, GNSS receiver, and secure element in connected car telematics control units (TCUs). IC Role / Device Role / Timing Role: Dual [email protected] (modem SoC) and [email protected] (GNSS) with SYNC-locked frequency to avoid RF interference. Use Value: 2.3MHz operation shifts switching noise above cellular bands; AEC-Q100 Grade 1 ensures reliability in vibration-prone mounting locations. | Use Scenario: Power management in portable diagnostic tools and handheld test equipment operating from USB-C or Li-ion sources. IC Role / Device Role / Timing Role: Delivers 3.3V@2A (main logic) and [email protected] (sensor interface) with external soft-start for clean power-up. Use Value: 100% duty cycle operation maintains regulation down to 3.0V input - extends usable battery range beyond typical LDO dropout limits. |
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 |
|---|---|---|---|
| TPS6521845RSLR | Single-chip PMIC with 4 buck + 4 LDOs; 1.8V/1.5A + 3.3V/1.5A dual-buck section; 12µA IQ; no SYNC; QFN-48 | Higher integration but larger footprint and fixed rail assignments - less flexible for custom dual-rail designs | Select when consolidating multiple regulators and LDOs into one IC; avoid if only two adjustable bucks are needed |
| RTQ2134BGQW | 2.7–6V dual buck; 1.2A/1.2A; 30µA IQ; 2.1MHz fSW; no PG, no SYNC, no 100% duty cycle; WLCSP-20 | Lower IQ and smaller package but lacks power-good signaling, frequency sync, and dropout capability - unsuitable for automotive diagnostics | Select for space-constrained consumer portables where AEC-Q100 and fault reporting are unnecessary |
Compared with TPS6521845RSLR and RTQ2134BGQW, MPQ2169BGRHE-AEC1-Z uniquely balances AEC-Q100 Grade 1 compliance, dual-channel configurability (1.4A/1.4A or 2A/0.8A), 100% duty cycle, and SYNC capability - making it optimal for discrete dual-rail automotive subsystems requiring design flexibility and robust fault handling.
Availability
MPQ2169BGRHE-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment, digital clusters, and telematics modules requiring stable component supply under extended temperature and vibration conditions.
Supply support for MPQ2169BGRHE-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 design focus on efficiency, integration, and automotive-grade reliability.
The MPQ2169B product line targets compact, high-efficiency DC/DC conversion in automotive electronics, emphasizing low IQ, AEC-Q100 qualification, and advanced features like phase-shifted operation and SYNC capability.
FAQ
What is the maximum supported switching frequency with external SYNC?
The MPQ2169BGRHE-AEC1-Z accepts external SYNC signals from 0.35MHz to 3MHz. Within this range, the channel 1 clock aligns to the SYNC rising edge, while channel 2 remains locked 180° out-of-phase - enabling precise EMI control and avoidance of sensitive frequency bands such as AM radio (0.53–1.6MHz).
How does the 100% duty cycle feature improve system performance?
When input voltage drops near the output level, the MPQ2169BGRHE-AEC1-Z sustains regulation by holding the high-side FET fully on - eliminating dropout losses typical of PWM-only regulators. This extends usable battery life in Li-ion systems, maintaining 1.8V output down to ~2.0V input without requiring a separate LDO fallback stage.
Can both channels operate at different output voltages and currents simultaneously?
Yes - each channel has independent FB, SS, EN, and PG pins. The device supports asymmetric configurations such as 1.2V@2A (CH1) and [email protected] (CH2), with separate soft-start timing and enable control. The 1.4A/1.4A or 2A/0.8A rating refers to total current capability per configuration, not per-pin limits.
What thermal performance can be expected in a typical automotive layout?
On a 4-layer 6.35cm×6.35cm evaluation board (2oz copper), the MPQ2169BGRHE-AEC1-Z achieves θJA = 34.8°C/W. At 2A/0.8A, 5V→1.8V, 2.3MHz, junction temperature rise stays below 20°C - well within AEC-Q100 Grade 1 limits even in sealed enclosures without forced airflow.
Is external compensation required for stable operation?
No - the MPQ2169BGRHE-AEC1-Z uses internal compensation with peak current mode control, eliminating external Type-II/III networks. Stability is guaranteed across all valid output capacitor ESR ranges and inductance values per the datasheet's recommended design equations.
How does the hiccup-mode short-circuit protection work?
Upon sustained short circuit (VFB < 60% of 0.6V after soft-start), the MPQ2169BGRHE-AEC1-Z disables switching, discharges the SS capacitor slowly, then re-attempts soft-start. This cycle repeats until fault clearance - limiting average power dissipation to safe levels and preventing thermal runaway during connector shorts or PCB faults.
What is the purpose of the wettable flank feature in the QFN-18 package?
The wettable flank design exposes vertical copper sidewalls on all perimeter pins, enabling automated optical inspection (AOI) of solder fillets during SMT reflow. This is mandatory for automotive manufacturing process control and IPC-A-610 Class 3 compliance, ensuring zero-defect interconnect reliability.
MPQ2169BGRHE-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:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 1.4A/1.4A, 2A/800mA
- Frequency - Switching:
- 2.3MHz
- 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)
MPQ2169BGRHE-AEC1-Z FAQ
1.How can I place an order for MPQ2169BGRHE-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ2169BGRHE-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 MPQ2169BGRHE-AEC1-Z reliable?
The price and inventory of MPQ2169BGRHE-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 MPQ2169BGRHE-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ2169BGRHE-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ2169BGRHE-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ2169BGRHE-AEC1-Z?
MPQ2169BGRHE-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ2169BGRHE-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 MPQ2169BGRHE-AEC1-Z?
For technical support, including MPQ2169BGRHE-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ2169BGRHE-AEC1-Z requirements.
6.How does Aetrix verify that MPQ2169BGRHE-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ2169BGRHE-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 MPQ2169BGRHE-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ2169BGRHE-AEC1-Z?
All MPQ2169BGRHE-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ2169BGRHE-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 MPQ2169BGRHE-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ2169BGRHE-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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