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Monolithic Power Systems Inc. MPQ9840GLE-33-AEC1-P
- Part No.:
- MPQ9840GLE-33-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 16-VQFN
- Datasheet:
-
MPQ9840GLE-33-AEC1-P.pdf
- Description:
- IC REG BUCK 3.3V 3.5A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
MPQ9840GLE-33-AEC1-P from Monolithic Power Systems is a 36V input, 3.3V fixed-output synchronous step-down DC/DC converter with 3.5A continuous output current, AEC-Q100 Grade-1 qualification, 14μA no-load quiescent current, and programmable 350kHz–2.5MHz switching frequency-designed for automotive power rails including ADAS camera modules and infotainment head units.
For engineers reviewing the MPQ9840GLE-33-AEC1-P datasheet, MPQ9840GLE-33-AEC1-P pinout, MPQ9840GLE-33-AEC1-P application, or MPQ9840GLE-33-AEC1-P equivalent, key selection criteria include its wettable flank QFN-16 package for automated optical inspection, integrated 125mΩ/55mΩ MOSFETs, AAM/CCM mode selectability via SYNC, 80ns minimum on-time for high-duty-cycle operation, and PG signal with ±10% accuracy window.
Technical Context
The MPQ9840GLE-33-AEC1-P employs peak-current-mode control with internal error amplifier and COMP voltage-based PWM timing, enabling fast transient response and simplified loop compensation. Its architecture integrates high-side and low-side MOSFETs with bootstrap gate drive and BST refresh logic to sustain >95% duty cycle in dropout conditions.
It supports dual operating modes: Advanced Asynchronous Mode (AAM) for ultra-low IQ at light load (14μA), and forced Continuous Conduction Mode (CCM) for fixed-frequency EMI control-selected by SYNC pin state prior to startup. The fixed 3.3V output version eliminates external feedback resistors and connects FB directly to VOUT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.3V to 36V - supports cold-crank (4.5V) and load-dump (36V) transients in automotive 12V systems. |
| Output Voltage | Fixed 3.3V ±1% - eliminates external resistor divider, reduces BOM count and layout sensitivity. |
| Continuous Output Current | 3.5A - sustained under full thermal derating per θJA = 48°C/W on 4-layer PCB. |
| No-Load Quiescent Current | 14μA - enables >1-year battery standby in always-on automotive modules without wake-up leakage penalty. |
| Switching Frequency Range | 350kHz to 2.5MHz - allows EMI optimization above AM band and compatibility with compact 2.2μH–4.7μH inductors. |
| Power Good Accuracy | ±10% of 3.3V (i.e., 2.97V–3.63V) - provides reliable rail monitoring for microcontroller reset sequencing. |
| Thermal Shutdown Threshold | 170°C with 20°C hysteresis - protects against sustained overload while permitting short-term peak current bursts. |
Pinout & Package
MPQ9840GLE-33-AEC1-P is housed in a wettable flank QFN-16 package (3mm × 4mm, 0.5mm pitch), optimized for automated optical inspection (AOI) and solder joint reliability in automotive reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PHASE | Synchronization phase control | Selects in-phase or 180° out-of-phase relationship with external SYNC clock; tie to GND if unused. |
| 2 VIN | Main input supply | Accepts 3.3V–36V; requires local 10μF ceramic decoupling to PGND for EMI suppression. |
| 3,10 SW | Switch node | High dv/dt node connecting internal HS/LS MOSFETs; must be minimized in area and routed over solid PGND plane. |
| 4,9 PGND | Power ground return | Low-impedance path for switch currents; isolated from AGND except at single-point star connection. |
| 5 EN | Enable control | Logic-level input (0.9V–1.2V threshold); must be actively driven-never floated. |
| 6 SYNC | Frequency sync & mode select | Accepts 350kHz–2.5MHz external clock; low at startup enables AAM, high enables forced CCM. |
| 7 PG | Open-drain power good | Asserts low when VOUT deviates >±10% from 3.3V; requires external pull-up to monitored rail or logic supply. |
| 8 BIAS | Efficiency-boosting bias supply | Accepts 5V–18V external source to reduce internal LDO loss; float or tie to GND if unused. |
| 11 BST | Bootstrap capacitor connection | Connects 0.1μF–1μF ceramic cap to SW; enables high-side gate drive during 100% duty cycle operation. |
| 12 VCC | Internal regulator output | 5V regulated supply for control circuitry; requires ≥1μF ceramic decoupling to AGND. |
| 13 AGND | Analog ground reference | Reference for FB, SS, and error amplifier; separated from PGND to avoid noise coupling into feedback path. |
| 14 SS | External soft-start timing | Connects to GND via capacitor to set start-up ramp time; floating defaults to 0.7ms internal soft-start. |
| 15 FB | Feedback input | Internally tied to 3.3V output in fixed-version; no external resistor required-reduces layout error risk. |
| 16 FREQ | Frequency programming | Resistor-to-GND sets switching frequency; 180kΩ yields ~475kHz, 27kΩ yields ~2.5MHz. |
Key Features
| Feature | Design Value |
|---|---|
| Wettable flank QFN-16 | Enables AOI-compatible solder joint inspection for zero-defect automotive manufacturing requirements. |
| AEC-Q100 Grade-1 qualification | Validated for operation from –40°C to +125°C junction temperature-meets automotive power system reliability standards. |
| 14μA no-load IQ | Extends battery runtime in always-on vehicle subsystems such as telematics and CAN gateway controllers. |
| 80ns minimum on-time | Supports 3.3V output from 36V input at >9% duty cycle-enables single-stage conversion without pre-regulator. |
| Hiccup-mode over-current protection | Shuts down and auto-retries during sustained overload, preventing thermal runaway in fault conditions. |
| CISPR25 Class 5 compliant EMI | Meets stringent automotive radiated/conducted emissions limits up to 1GHz with standard EMI filter design. |
Applications
| ADAS Camera Power Supply | Automotive Infotainment Core Rail |
|---|---|
|
Use Scenario: Powers image sensor, ISP, and MIPI interface in front/rear-view cameras exposed to engine bay temperatures. IC Role / Device Role / Timing Role: Primary 3.3V buck regulator delivering clean, low-noise power with fast load-step response to handle burst pixel readout. Use Value: 14μA IQ extends parking-mode camera recording duration; AEC-Q100 Grade-1 ensures operation at 125°C junction temp. |
Use Scenario: Supplies 3.3V core logic for SoC, audio codec, and display controller in head unit mainboard. IC Role / Device Role / Timing Role: Fixed-output step-down converter with PG signal synchronized to SoC power sequencing requirements. Use Value: Wettable flank QFN enables 100% AOI coverage; 350kHz–2.5MHz frequency tuning avoids AM/FM radio interference bands. |
| Body Control Module (BCM) Microcontroller Rail | Automotive Gateway ECU Power |
|
Use Scenario: Generates 3.3V for 32-bit MCU, LIN transceivers, and sensor interfaces in door module or lighting ECU. IC Role / Device Role / Timing Role: High-efficiency buck converter supporting wide VIN range during battery voltage sag and surge events. Use Value: 3.3V fixed output eliminates feedback resistor drift concerns; hiccup OCP prevents latch-up during shorted LIN bus faults. |
Use Scenario: Provides isolated 3.3V domain for CAN FD, Ethernet AVB, and security MCU in zonal gateway architecture. IC Role / Device Role / Timing Role: Synchronized buck regulator sharing clock with other power stages to minimize beat-frequency EMI. Use Value: SYNC/PHASE pins enable deterministic multi-rail timing; BIAS pin improves efficiency when 5V rail is available. |
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 |
|---|---|---|---|
| TPS62933RTER | 3.3V fixed, 3A output, 1.8V–16V input, 1.8MHz default freq, no AEC-Q100 rating | Targeted at industrial/commercial portable devices-not qualified for automotive underhood use | Select only for non-automotive designs where AEC-Q100 is not required and 3A output suffices. |
| LM61480QRNXTQ1 | 3.3V fixed, 8A output, 3.0V–36V input, 400kHz–2.2MHz freq, AEC-Q100 Grade-1, larger HTSSOP-16 package | Higher current capability and thermal margin-but larger footprint and higher cost for 3.5A use case | Choose when future-proofing for >5A loads or when board space permits larger package and higher BOM cost. |
Compared with TPS62933RTER and LM61480QRNXTQ1, MPQ9840GLE-33-AEC1-P delivers optimal balance of AEC-Q100 compliance, 3.5A capability, wettable flank packaging, and ultra-low 14μA IQ-making it the most cost- and space-efficient choice for 3.3V automotive subsystems requiring long battery hold-up and zero-defect manufacturability.
Availability
MPQ9840GLE-33-AEC1-P is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment head units, and body control modules requiring stable component supply across extended temperature ranges and full AEC-Q100 lifecycle support.
Supply support for MPQ9840GLE-33-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, Korea, and Taiwan.
The MPQ9840 product line delivers AEC-Q100-qualified, high-efficiency DC/DC converters for automotive power systems-engineered specifically for harsh environments, extended temperature operation, and zero-defect manufacturing requirements.
FAQ
What is the purpose of the BIAS pin on MPQ9840GLE-33-AEC1-P?
The BIAS pin accepts an external 5V–18V supply to power the internal control circuitry, bypassing the VIN-to-VCC LDO and reducing power dissipation. When used, it improves full-load efficiency by up to 3% and lowers die temperature-critical for thermally constrained automotive layouts. If unused, BIAS must be floated or tied to GND.
How does the MPQ9840GLE-33-AEC1-P achieve 14μA quiescent current?
It achieves 14μA IQ through Advanced Asynchronous Mode (AAM), which disables the internal oscillator and enters power-save mode (PSM) at light/no load. In PSM, the device wakes only when output voltage droop triggers COMP voltage crossing the AAM threshold-minimizing switching losses while maintaining regulation.
Can MPQ9840GLE-33-AEC1-P operate with 100% duty cycle?
Yes-it supports near-100% duty cycle via BST refresh logic. When BST-to-SW voltage drops below 2.5V, the high-side FET turns off briefly to allow low-side conduction and recharge the bootstrap capacitor. This enables stable 3.3V output even with VIN as low as 3.4V, critical for automotive cold-crank scenarios.
What is the function of the PHASE pin?
The PHASE pin selects synchronization phase relative to the external SYNC clock: pulled high for in-phase operation, pulled low for 180° out-of-phase. This enables interleaved operation with multiple MPQ9840 devices to reduce input/output ripple and EMI peaks-especially useful in multi-rail automotive ECUs.
Is external compensation required for MPQ9840GLE-33-AEC1-P?
No-its optimized internal compensation network eliminates the need for external Type-II or Type-III compensation components. This simplifies layout, reduces BOM count, and ensures stable operation across all operating conditions without tuning, provided recommended input/output capacitors and inductor DCR are used.
Does MPQ9840GLE-33-AEC1-P support spread-spectrum frequency modulation?
No-spread-spectrum modulation is not implemented. However, its programmable 350kHz–2.5MHz frequency range and SYNC pin allow precise placement of switching harmonics away from sensitive bands (e.g., AM radio, CAN FD clock), achieving equivalent EMI reduction without added complexity.
What failure protections are built into MPQ9840GLE-33-AEC1-P?
It integrates hiccup-mode over-current protection (OCP), short-circuit protection (SCP), thermal shutdown (170°C with 20°C hysteresis), input under-voltage lockout (2.4V–3.2V with 150mV hysteresis), and reverse-current limiting (3A). All protections are fully autonomous and require no external components.
MPQ9840GLE-33-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):
- 3.3V
- 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-33-AEC1-P FAQ
1.How can I place an order for MPQ9840GLE-33-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ9840GLE-33-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-33-AEC1-P reliable?
The price and inventory of MPQ9840GLE-33-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-33-AEC1-P is usually 5 days.
3.What payment methods are accepted for MPQ9840GLE-33-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ9840GLE-33-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ9840GLE-33-AEC1-P?
MPQ9840GLE-33-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ9840GLE-33-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-33-AEC1-P?
For technical support, including MPQ9840GLE-33-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ9840GLE-33-AEC1-P requirements.
6.How does Aetrix verify that MPQ9840GLE-33-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPQ9840GLE-33-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-33-AEC1-P meets industry standards.
7.What is the process for return or replacement of MPQ9840GLE-33-AEC1-P?
All MPQ9840GLE-33-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ9840GLE-33-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-33-AEC1-P part is unused and in its original packaging.
Return procedure for MPQ9840GLE-33-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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