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Monolithic Power Systems Inc. MPQ9840GLE-5-AEC1-P
- Part No.:
- MPQ9840GLE-5-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 16-VQFN
- Datasheet:
-
MPQ9840GLE-5-AEC1-P.pdf
- Description:
- IC REG BUCK 5V 3.5A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,652
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Product details
Overview
MPQ9840GLE-5-AEC1-P from Monolithic Power Systems is an AEC-Q100 Grade-1 qualified, synchronous step-down DC/DC converter with integrated 125mΩ high-side and 55mΩ low-side MOSFETs. It delivers up to 3.5A continuous output current at a fixed 5V output, supports 3.3V–36V input, operates with 14μA no-load quiescent current, and features programmable switching frequency (350kHz–2.5MHz) for automotive power rail regulation in ADAS camera modules and infotainment head units.
For engineers reviewing the MPQ9840GLE-5-AEC1-P datasheet, MPQ9840GLE-5-AEC1-P pinout, MPQ9840GLE-5-AEC1-P application, or MPQ9840GLE-5-AEC1-P equivalent, key selection criteria include its AEC-Q100 qualification, 5V fixed output with ±1.5% feedback reference accuracy, wettable flank QFN-16 package for automated optical inspection, and support for both forced CCM and advanced asynchronous mode (AAM) to optimize light-load efficiency in battery-backed systems.
Technical Context
The MPQ9840GLE-5-AEC1-P employs peak-current-mode control with internal compensation, enabling fast transient response and simplified loop stability. Its architecture integrates dual MOSFETs, a 5V internal VCC regulator, and a dedicated bootstrap charging circuit with BST refresh capability to sustain >95% duty cycle operation under low-VIN dropout conditions.
It implements dual operating modes: forced continuous conduction mode (CCM) for low-noise, fixed-frequency operation when SYNC is pulled high at startup, and advanced asynchronous mode (AAM) with power-save mode (PSM) for ultra-low 14μA quiescent current during no-load conditions-enabled by pulling SYNC low before startup.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.3V to 36V - supports full automotive battery range including cold-crank (6.5V) and load-dump (36V) transients. |
| Output Voltage | Fixed 5.0V ±1.5% - eliminates external resistor divider; enables direct powering of USB peripherals and microcontroller I/O rails. |
| Continuous Output Current | 3.5A - sustained delivery with thermal shutdown at 170°C and hiccup-mode OCP for robust fault recovery. |
| Quiescent Current | 14μA at no load - extends battery life in always-on vehicle modules such as telematics and gateway ECUs. |
| Switching Frequency | 350kHz to 2.5MHz - programmable via FREQ pin resistor or external SYNC clock; avoids AM radio band and enables compact magnetics. |
| Protection Features | OCP, SCP, thermal shutdown, and open-drain PG signal - PG asserts when VOUT is within ±10% of 5V, enabling system-level power sequencing. |
| Package | QFN-16 (3mm × 4mm) with wettable flanks - supports automated optical inspection (AOI) and improves solder joint reliability in automotive reflow profiles. |
| AEC-Q100 Grade | Grade-1 (−40°C to +125°C TJ) - qualified for engine bay and front-end module applications per automotive stress test requirements. |
Pinout & Package
MPQ9840GLE-5-AEC1-P is housed in a thermally enhanced, lead-free, wettable flank QFN-16 package (3mm × 4mm, 0.5mm pitch), featuring exposed thermal pad for PCB heat sinking and side-wettable leads compatible with automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PHASE | Synchronization phase select | Configures SYNC input phase alignment (in-phase or 180° out-of-phase); tie to GND if unused. |
| 2 VIN | Main power input | Accepts 3.3V–36V; requires local 10µF ceramic decoupling to minimize switching noise injection. |
| 3,10 SW | Power switch node | Internal connection point of HS/LS MOSFETs; routes high di/dt current; must be routed with minimal loop area. |
| 4,9 PGND | Power ground return | Low-impedance return path for power switches; requires dedicated copper pour and multiple vias to thermal pad. |
| 5 EN | Enable control | Digital enable with 0.9V–1.2V threshold; drives device into 2µA shutdown state when pulled low. |
| 6 SYNC | Frequency sync & mode select | Accepts 350kHz–2.5MHz external clock; also selects CCM (high) or AAM (low) at startup. |
| 7 PG | Power good indicator | Open-drain output asserting high when VOUT is within ±10% of 5V; requires external pull-up. |
| 8 BIAS | Efficiency-boosting bias supply | Accepts 5V–18V external bias to reduce internal VCC regulator loss and improve full-load efficiency. |
| 11 BST | Bootstrap supply | Charges via internal regulator; requires 0.1µF–1µF ceramic capacitor to SW for HS gate drive. |
| 12 VCC | Internal logic supply | 5V regulated output; requires ≥1µF local decoupling; powered from VIN or BIAS (preferred). |
| 13 AGND | Analog reference ground | Separate ground for FB, SS, and error amplifier; must be connected to PGND at single point near IC. |
| 14 SS | Soft-start timing | External capacitor sets soft-start time (10µA current source); floating enables internal 0.7ms default. |
| 15 FB | Feedback input | Internally tied to 5V output for fixed-version operation; no external divider required. |
| 16 FREQ | Frequency programming | Resistor-to-ground sets switching frequency (e.g., 180kΩ = ~475kHz); enables EMI optimization. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 14μA no-load IQ enables >1-year battery hold-up in always-on automotive modules without compromising start-up time. |
| Integrated dual MOSFETs | 125mΩ HS + 55mΩ LS RDS(on) minimizes conduction loss at 3.5A, reducing thermal stress and eliminating external FET layout complexity. |
| Wettable flank QFN-16 | Enables AOI-compatible solder joint inspection and improves interconnect reliability under thermal cycling in automotive environments. |
| Advanced Asynchronous Mode (AAM) | Automatically transitions to power-save mode (PSM) at light loads, maintaining >85% efficiency down to 1mA output current. |
| Programmable minimum on-time | 80ns minimum on-time supports high VIN-to-VOUT ratios (e.g., 24V→5V @ ~21% duty cycle) without pulse-skipping instability. |
| CISPR-25 Class 5 compliant | Meets stringent automotive EMI limits for conducted/radiated emissions (150kHz–1GHz) when used with recommended EMI filter layout. |
Applications
| ADAS Camera Power Supply | Infotainment System Core Rail |
|---|---|
|
Use Scenario: Powers image sensor, ISP, and interface circuitry in rear-view and surround-view cameras exposed to under-hood temperature extremes. IC Role / Device Role / Timing Role: Primary 5V buck regulator delivering stable, low-noise power with fast load-transient response to handle burst-mode sensor readouts. Use Value: AEC-Q100 Grade-1 qualification and 125°C junction rating ensure uninterrupted operation during prolonged 85°C ambient exposure; 14μA IQ extends backup battery life during vehicle sleep mode. |
Use Scenario: Supplies 5V core power to SoC, audio codec, and display controller in head unit designs requiring high reliability and low standby consumption. IC Role / Device Role / Timing Role: Fixed-output synchronous buck converter providing tightly regulated 5V rail with PG monitoring for safe system boot and reset sequencing. Use Value: Wettable flank QFN enables 100% AOI coverage for zero-defect manufacturing; SYNC-controlled CCM mode ensures predictable EMI profile during multimedia processing bursts. |
| Telematics Control Unit (TCU) | Body Control Module (BCM) Subsystem |
|
Use Scenario: Powers LTE modem, GNSS receiver, and CAN transceiver in cellular-connected vehicle tracking units operating across global voltage ranges. IC Role / Device Role / Timing Role: Input-range-flexible buck converter supporting 6.5V cold-crank and 36V load-dump events while maintaining 5V output integrity. Use Value: 3.3V–36V input range and hiccup-mode OCP prevent latch-up during CAN bus short circuits; PG signal coordinates modem wake-up with vehicle ignition status. |
Use Scenario: Regulates 5V rail for door module microcontrollers, LED drivers, and LIN transceivers in distributed body electronics architectures. IC Role / Device Role / Timing Role: High-efficiency, low-IQ step-down converter enabling <100μA system standby current in ISO 16750-compliant modules. Use Value: AAM/PSM operation achieves >90% efficiency at 10mA load, meeting OEM requirements for 10-year battery drain budgets in keyless entry systems. |
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 |
|---|---|---|---|
| MPQ4436GL-AEC1-P | Higher 6A output current, 45V max input, but 25μA IQ and no wettable flank option. | Better suited for high-power ADAS domain controllers; less optimal for space-constrained, AOI-dependent modules. | Select when >4A output or 40V+ input margin is required; avoid if AOI compliance or sub-20μA IQ is mandatory. |
| TPS54560QDGQRQ1 | 4.5V–60V input, 5A output, but 110μA IQ, SOIC-8 package, and no AEC-Q100 Grade-1 certification. | Targeted at industrial-grade automotive subsystems where extended input range outweighs efficiency and qualification needs. | Choose only for non-safety-critical, non-temperature-extreme applications where footprint and qualification are secondary. |
Compared with MPQ4436GL-AEC1-P and TPS54560QDGQRQ1, the MPQ9840GLE-5-AEC1-P uniquely balances AEC-Q100 Grade-1 qualification, wettable flank packaging, 14μA IQ, and fixed 5V output in a 3mm×4mm footprint-making it the optimal choice for cost-sensitive, space-constrained, and AOI-governed automotive modules requiring guaranteed low-power operation.
Availability
MPQ9840GLE-5-AEC1-P is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment head units, telematics control units, and body control modules requiring stable component supply with full AEC-Q100 traceability and long-term production support.
Supply support for MPQ9840GLE-5-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 analog and power ICs, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.
The MPQ9840 product line targets automotive power conversion applications demanding AEC-Q100 qualification, ultra-low quiescent current, and compact integration-specifically engineered for next-generation ADAS, infotainment, and electrification subsystems.
FAQ
What is the function of the PHASE pin on MPQ9840GLE-5-AEC1-P?
The PHASE pin selects synchronization alignment relative to the external SYNC clock: pulling it high configures in-phase operation, while pulling it low sets 180° out-of-phase. This enables interleaved operation with other MPQ9840 devices to reduce input ripple current. If unused, it must be tied to GND to prevent floating and ensure deterministic behavior.
Can MPQ9840GLE-5-AEC1-P operate with input voltage below 3.3V?
No. The absolute minimum input voltage is 3.3V per datasheet specifications. Below this, the internal UVLO circuit disables operation to protect the control logic and gate drivers. During cold-crank events where battery voltage dips to 6.5V, the device remains fully functional-but operation below 3.3V is not supported and may cause undefined behavior or failure to start.
How does the BIAS pin improve efficiency?
The BIAS pin accepts an external 5V–18V supply to power the internal VCC regulator and gate drivers, bypassing the less efficient VIN-to-VCC linear regulator. When BIAS is connected, power dissipation in the IC drops significantly-especially at high VIN-improving full-load efficiency by up to 3% and reducing thermal stress on the QFN package.
Is external compensation required for MPQ9840GLE-5-AEC1-P?
No. The MPQ9840GLE-5-AEC1-P features an optimized internal compensation network designed for use with standard 4.7µH inductors and ceramic output capacitors. External compensation components are unnecessary, simplifying design, reducing BOM count, and improving production yield-verified across the full input/output/load/temperature range.
What is the purpose of the BST refresh feature?
BST refresh actively monitors the BST-to-SW voltage and forces the low-side MOSFET on briefly when BST falls below 2.5V, recharging the bootstrap capacitor. This enables reliable high-duty-cycle operation (up to ~98%) during low-VIN conditions like 6.5V cold-crank, preventing HS-FET gate drive collapse and maintaining regulation without external charge-pump circuitry.
Does MPQ9840GLE-5-AEC1-P support spread-spectrum frequency modulation?
No. The MPQ9840GLE-5-AEC1-P does not implement internal spread-spectrum modulation. EMI reduction is achieved through selectable switching frequency (350kHz–2.5MHz), optimized layout guidance, integrated MOSFETs with controlled slew rates, and compatibility with external CISPR-25-compliant EMI filters as shown in the reference design.
How is the power good (PG) signal debounced?
The PG signal includes an internal deglitch timer: 30µs delay on rising edge (PG assertion) and 50µs delay on falling edge (PG deassertion). This prevents false triggering due to brief output transients during load steps or input disturbances, ensuring robust power sequencing in safety-critical automotive systems.
MPQ9840GLE-5-AEC1-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MPQ
- Package/Case:
- 16-VQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.3V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 3.5A
- Frequency - Switching:
- 350kHz ~ 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 16-QFN (3x4)
MPQ9840GLE-5-AEC1-P FAQ
1.How can I place an order for MPQ9840GLE-5-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ9840GLE-5-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 MPQ9840GLE-5-AEC1-P reliable?
The price and inventory of MPQ9840GLE-5-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 MPQ9840GLE-5-AEC1-P is usually 5 days.
3.What payment methods are accepted for MPQ9840GLE-5-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ9840GLE-5-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ9840GLE-5-AEC1-P?
MPQ9840GLE-5-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ9840GLE-5-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 MPQ9840GLE-5-AEC1-P?
For technical support, including MPQ9840GLE-5-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ9840GLE-5-AEC1-P requirements.
6.How does Aetrix verify that MPQ9840GLE-5-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPQ9840GLE-5-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 MPQ9840GLE-5-AEC1-P meets industry standards.
7.What is the process for return or replacement of MPQ9840GLE-5-AEC1-P?
All MPQ9840GLE-5-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ9840GLE-5-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 MPQ9840GLE-5-AEC1-P part is unused and in its original packaging.
Return procedure for MPQ9840GLE-5-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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