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Monolithic Power Systems Inc. MPQ9842GLE-AEC1-Z
- Part No.:
- MPQ9842GLE-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 16-VQFN
- Datasheet:
-
MPQ9842GLE-AEC1-Z.pdf
- Description:
- IC REG BUCK ADJ 2A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,453
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Product details
Overview
MPQ9842GLE-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade-1 qualified, synchronous step-down DC/DC converter delivering 2A continuous output current across a 3.3V–36V input range. It integrates 125mΩ high-side and 55mΩ low-side MOSFETs, operates with 14μA no-load quiescent current, supports 350kHz–2.5MHz programmable switching frequency, and features power-good (PG) signaling - enabling use in automotive ADAS camera modules, infotainment head units, and body control modules requiring high efficiency and wide VIN tolerance.
For engineers reviewing the MPQ9842GLE-AEC1-Z datasheet, MPQ9842GLE-AEC1-Z pinout, MPQ9842GLE-AEC1-Z application, or MPQ9842GLE-AEC1-Z equivalent, key selection criteria include its AEC-Q100 qualification, wettable flank QFN-16 package for automated optical inspection, 80ns minimum on-time for high-duty-cycle operation, selectable forced CCM/AAM modes, and integrated BST refresh for low-dropout performance in 12V/24V automotive systems.
Technical Context
The MPQ9842GLE-AEC1-Z employs peak-current-mode control with internal error amplifier and optimized compensation network, enabling fast transient response and stable loop behavior without external type-II/type-III networks. Its PLL-based oscillator supports precise frequency synchronization and phase alignment via SYNC/PHASE pins.
It implements dual-mode operation: forced continuous conduction mode (CCM) for low-noise, fixed-frequency regulation under medium-to-heavy loads, and advanced asynchronous mode (AAM) with power-save mode (PSM) for ultra-low 14μA quiescent current at light/no load - critical for always-on automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.3V to 36V - supports full automotive battery range including cold-crank (≥4.5V) and load-dump (≤40V abs max) conditions. |
| Output Current | 2A continuous - sustained at TJ ≤ 125°C with proper PCB thermal design per QFN-16 (3mm×4mm) layout guidelines. |
| Quiescent Current | 14μA at no load - enables >1-year battery standby in always-on vehicle modules without compromising runtime. |
| Switching Frequency | 350kHz to 2.5MHz - programmable via FREQ resistor or external SYNC clock; avoids AM radio band and enables compact magnetics. |
| Feedback Reference | 0.800V ±1.5% - precision reference enables <±1% output voltage accuracy with standard 1% resistors in adjustable configurations. |
| Thermal Shutdown | 170°C with 20°C hysteresis - protects against sustained overload or poor heatsinking while allowing safe recovery after fault clearance. |
| Power Good Threshold | 90% to 95% of VREF rising, 79% to 84% falling - provides clean, glitch-free enable/disable sequencing for downstream processors and sensors. |
Pinout & Package
MPQ9842GLE-AEC1-Z is housed in a wettable flank QFN-16 (3mm × 4mm, 0.5mm pitch) package, designed for automated optical inspection (AOI) and enhanced solder joint reliability in automotive reflow processes.
| 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 power input | Supplies internal control circuitry and high-side switch; requires local 10µF ceramic decoupling to PGND. |
| 3,10 SW | Switch node | Drives external inductor; internally connected pins reduce trace inductance and EMI in high-di/dt paths. |
| 4,9 PGND | Power ground return | Low-impedance return path for high-current switching; must be solid copper pour with multiple thermal vias to inner layers. |
| 5 EN | Enable control | Digital logic input (0.9V–1.2V threshold); pull low for 2µA shutdown; must not float. |
| 6 SYNC | Frequency sync & mode select | Accepts 350kHz–2.5MHz external clock; also selects CCM (high) or AAM (low) before startup. |
| 7 PG | Open-drain power-good flag | Signals VOUT within ±10% of target; requires external pull-up to VBIAS or VCC for system sequencing. |
| 8 BIAS | Efficiency-boosting bias supply | Accepts 5V–18V external rail to reduce internal LDO losses; improves full-load efficiency by ~1.5%. |
| 11 BST | Bootstrap gate drive supply | Charged via internal regulator from VIN; requires 0.1µF–1µF ceramic capacitor to SW for HS-FET gate drive. |
| 12 VCC | Internal bias rail | 5V regulated output powering control logic; bypass with ≥1µF ceramic capacitor to AGND. |
| 13 AGND | Analog ground reference | Separate ground for FB, SS, and error amplifier; must connect to PGND at single point near VCC capacitor. |
| 14 SS | Soft-start timing control | Capacitor from SS to AGND sets ramp time; internal 10µA current source enables predictable inrush limiting. |
| 15 FB | Output voltage feedback | 0.8V reference input; for adjustable version, connects to resistor divider; for fixed versions, tied directly to VOUT. |
| 16 FREQ | Frequency programming | Resistor to GND sets fSW per RFREQ = 170kΩ / fSW(kHz); enables precise EMI tuning and layout optimization. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade-1 qualification | Rated for −40°C to +125°C junction temperature with full parametric validation across temperature, life, and stress tests. |
| Wettable flank QFN-16 package | Enables reliable AOI inspection of solder joints - critical for zero-defect automotive manufacturing requirements. |
| 80ns minimum on-time | Supports >95% duty cycle at high input voltages (e.g., 24V→3.3V), eliminating need for pre-regulator stages. |
| Hiccup-mode over-current protection | Shuts down and auto-retries on sustained overload, preventing thermal runaway while maintaining system recoverability. |
| BST refresh during dropout | Actively maintains bootstrap voltage during 100% duty cycle operation, enabling seamless transition into low-VIN dropout. |
| CISPR 25 Class 5 compliant EMI performance | Validated with recommended layout and filters - meets stringent automotive radiated/conducted emissions limits up to 1GHz. |
Applications
| ADAS Camera Power Supply | Automotive Infotainment Core Rail |
|---|---|
|
Use Scenario: Powering 12MP image sensor and ISP SoC in rear-view or surround-view camera modules. IC Role / Device Role / Timing Role: Primary 3.3V/2A buck converter supplying sensor analog core and digital I/O rails with tight ripple (<15mVpp) and fast load transient response. Use Value: 14μA quiescent current extends battery-backed recording time; AAM mode eliminates audible coil whine during parking mode. |
Use Scenario: Generating 5V/2A main supply for MCU, display controller, and USB hub in head unit systems. IC Role / Device Role / Timing Role: Synchronous step-down regulator with PG signal used for controlled power-up sequencing of multi-rail SoC subsystems. Use Value: 350kHz–2.5MHz frequency flexibility avoids AM/FM interference bands; wettable flank package ensures IPC-A-610 Class 3 solder joint integrity. |
| Body Control Module (BCM) Subsystem | Telematics Control Unit (TCU) Backup Rail |
|
Use Scenario: Providing 3.3V auxiliary rail for LIN transceivers, LED drivers, and EEPROM in door module ECUs. IC Role / Device Role / Timing Role: High-efficiency, wide-input buck converter operating from 6V–16V battery with robust cold-crank support. Use Value: 3.3V fixed-output variant (MPQ9842GLE-33-AEC1-Z) eliminates external feedback resistors; reduces BOM count and layout area. |
Use Scenario: Delivering 5V/2A backup supply to GNSS receiver and cellular modem during main power loss. IC Role / Device Role / Timing Role: Always-on buck regulator with ultra-low IQ and thermal shutdown, powered from supercapacitor or backup battery. Use Value: 2µA shutdown current preserves backup energy; 170°C thermal shutdown prevents damage during extended thermal stress events. |
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 |
|---|---|---|---|
| TPS62933RGER | Lower 1.8V–18V input range; 3A rating; 1.5µA shutdown current; no AEC-Q100 qualification. | Targeted at industrial/commercial portable devices, not automotive safety-critical systems. | Select only for non-automotive designs where AEC-Q100 is not required and higher output current is needed. |
| LM61480QRNXTQ1 | 3.0V–36V input; 8A rating; 15µA IQ; AEC-Q100 Grade-1; larger HTSSOP-16 package without wettable flanks. | Used in higher-power domains like HVAC or ADAS domain controllers where 2A is insufficient. | Choose when >2A output or different thermal profile is required; avoid if AOI-compatible QFN is mandatory. |
Compared with TPS62933RGER and LM61480QRNXTQ1, the MPQ9842GLE-AEC1-Z uniquely balances AEC-Q100 compliance, wettable flank QFN-16 packaging, 2A capability, and 14μA light-load IQ - making it optimal for space-constrained, cost-sensitive automotive subsystems where full qualification and manufacturability are non-negotiable.
Availability
MPQ9842GLE-AEC1-Z 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 long production lifecycles.
Supply support for MPQ9842GLE-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 over two decades of expertise in DC/DC conversion, motor drivers, and battery management solutions.
The MPQ9842 belongs to MPS's automotive-grade power management product line, engineered specifically for harsh-environment vehicle subsystems demanding AEC-Q100 qualification, low EMI, and long-term supply stability.
FAQ
What does the "-AEC1" suffix indicate in MPQ9842GLE-AEC1-Z?
The "-AEC1" suffix certifies that this device is fully qualified to AEC-Q100 Grade 1 standards, meaning it has passed rigorous stress testing for operation from −40°C to +125°C junction temperature, including HTOL, TC, UHAST, and ESD validation - required for engine bay and cabin-mounted automotive electronics.
Can MPQ9842GLE-AEC1-Z operate with a 40V input transient?
Yes - the absolute maximum VIN rating is 40V, and the device includes built-in overvoltage protection circuitry. However, sustained operation above 36V violates recommended conditions; use external TVS clamping for load-dump transients per ISO 7637-2 Pulse 5a.
How is the wettable flank feature implemented in the QFN-16 package?
The MPQ9842GLE-AEC1-Z uses a QFN-16 (3mm×4mm) package with solderable side-wall plating on all perimeter pins, enabling automated optical inspection (AOI) of solder fillet geometry - a requirement for IPC-A-610 Class 3 automotive assembly lines.
Does the MPQ9842GLE-AEC1-Z require external compensation components?
No - it features an internally optimized compensation network for the error amplifier, eliminating the need for external type-II or type-III compensation networks. This simplifies layout and reduces BOM count while maintaining stability across all operating conditions.
What is the purpose of the BIAS pin, and when should it be used?
The BIAS pin accepts an external 5V–18V supply to power internal circuitry, bypassing the internal VIN-to-5V LDO. Using BIAS improves full-load efficiency by ~1.5% and reduces thermal dissipation - recommended when a clean, low-noise 5V rail is already available on the board.
How does the BST refresh function improve dropout performance?
When BST-to-SW voltage drops below 2.5V during high-duty-cycle operation, the MPQ9842GLE-AEC1-Z forces the low-side FET on briefly to recharge the BST capacitor through the inductor - enabling effective duty cycles >98% without external bootstrap assist circuitry.
Is the MPQ9842GLE-AEC1-Z pin-compatible with other MPQ9842 variants?
Yes - all MPQ9842 variants (including MPQ9842GL, MPQ9842GLE-33-AEC1-Z, and MPQ9842GLE-5-AEC1-Z) share identical QFN-16 pinout and footprint. Only the feedback configuration (adjustable vs. fixed) and qualification level differ between part numbers.
MPQ9842GLE-AEC1-Z 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:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.3V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 36V
- Current - Output:
- 2A
- 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)
MPQ9842GLE-AEC1-Z FAQ
1.How can I place an order for MPQ9842GLE-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ9842GLE-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 MPQ9842GLE-AEC1-Z reliable?
The price and inventory of MPQ9842GLE-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 MPQ9842GLE-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ9842GLE-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ9842GLE-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ9842GLE-AEC1-Z?
MPQ9842GLE-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ9842GLE-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 MPQ9842GLE-AEC1-Z?
For technical support, including MPQ9842GLE-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ9842GLE-AEC1-Z requirements.
6.How does Aetrix verify that MPQ9842GLE-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ9842GLE-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 MPQ9842GLE-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ9842GLE-AEC1-Z?
All MPQ9842GLE-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ9842GLE-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 MPQ9842GLE-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ9842GLE-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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