My Inquiry
My Account
Monolithic Power Systems Inc. MPQ9840GLE-AEC1-P
- Part No.:
- MPQ9840GLE-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 16-VQFN
- Datasheet:
-
MPQ9840GLE-AEC1-P.pdf
- Description:
- IC REG BUCK ADJ 3.5A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:956
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MPQ9840GLE-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 3.5A continuous output current across a 3.3V–36V input range, supports 350kHz–2.5MHz programmable switching frequency, and achieves 14μA no-load quiescent current-enabling use in automotive infotainment power rails and ADAS camera modules requiring high efficiency at light load.
For engineers reviewing the MPQ9840GLE-AEC1-P datasheet, MPQ9840GLE-AEC1-P pinout, MPQ9840GLE-AEC1-P application, or MPQ9840GLE-AEC1-P equivalent, key selection criteria include its wettable-flank QFN-16 package for automated optical inspection, AAM/CCM mode selectability via SYNC pin, 80ns minimum on-time for high-duty-cycle operation, and integrated PG signal with ±10% output voltage monitoring tolerance.
Technical Context
The MPQ9840GLE-AEC1-P employs peak-current-mode control with internal error amplifier and optimized compensation network, enabling fast transient response and stable loop behavior without external components. Its PLL-based oscillator supports precise synchronization to external clocks while maintaining jitter performance under automotive temperature cycling (−40°C to +125°C).
It integrates dual-mode operation: Advanced Asynchronous Mode (AAM) for ultra-low IQ (<14μA) at light/no load, and forced Continuous Conduction Mode (CCM) for fixed-frequency ripple control. BST refresh circuitry enables >99% effective duty cycle during low-VIN dropout conditions, critical for cold-crank automotive scenarios.
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 absolute max) |
| Output Current | 3.5A continuous - sustained at full rating with proper thermal layout on 4-layer PCB per JESD51-7 |
| Quiescent Current | 14μA at no load - enables >10-year battery standby in always-on vehicle modules |
| Switching Frequency | 350kHz to 2.5MHz - programmable via resistor or external clock; avoids AM/FM radio bands and enables compact magnetics |
| Feedback Reference | 0.800V ±1.5% - precision reference enables accurate output regulation across temperature and line variations |
| Power Good Threshold | ±10% of nominal VOUT - open-drain PG asserts after deglitch timer (30μs rise, 50μs fall) for reliable system sequencing |
| Thermal Shutdown | 170°C with 20°C hysteresis - protects against sustained overload or poor heatsinking in enclosed ECU enclosures |
Pinout & Package
MPQ9840GLE-AEC1-P is housed in a wettable-flank QFN-16 package (3mm × 4mm, 0.5mm pitch), 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 sync relative to external clock; tie to GND if unused |
| 2 VIN | Main power input | Supplies internal control circuitry and high-side switch; requires local 10μF ceramic decoupling |
| 3,10 SW | Switch node | Drives external inductor; internally connected pins reduce parasitic inductance in high-di/dt paths |
| 4,9 PGND | Power ground return | Low-impedance path for high-current switch return; must be tied to thermal pad and solid copper pour |
| 5 EN | Enable control | Digital logic input; 0.9V–1.2V threshold enables startup; <0.4V forces 2μA shutdown mode |
| 6 SYNC | Frequency sync & mode select | Accepts 350kHz–2.5MHz clock; low pre-startup enables AAM; high enables forced CCM |
| 7 PG | Power good indicator | Open-drain output; sinks 2mA at 0.4V max when VOUT within ±10% of target |
| 8 BIAS | Efficiency-boosting bias supply | Accepts 5V–18V external rail to reduce internal LDO losses and improve full-load efficiency by ~1.5% |
| 11 BST | Bootstrap supply | Charges via internal regulator; requires 0.1μF–1μF ceramic capacitor to SW for high-side gate drive |
| 12 VCC | Internal bias rail | 5V regulated output; requires ≥1μF local decoupling; powers gate drivers and control logic |
| 13 AGND | Analog reference ground | Separate from PGND to minimize noise coupling into feedback and error amplifier |
| 14 SS | Soft-start timing | 10μA current source charges external capacitor; floating enables 0.7ms internal soft-start |
| 15 FB | Feedback input | 0.800V reference point; for adjustable versions, connects to resistor divider; fixed versions tie directly to VOUT |
| 16 FREQ | Frequency programming | Resistor-to-ground sets switching frequency per RFREQ = 1.11×10⁶ / fSW(kHz) kΩ |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade-1 qualification | Validated for −40°C to +125°C junction operation with lifetime reliability testing per automotive stress standards |
| Wettable flank QFN-16 package | Enables AOI-compatible solder joint inspection and improves interconnect robustness in vibration-prone automotive environments |
| 80ns minimum on-time | Supports >95% duty cycle at 36V→3.3V conversion, essential for cold-crank operation without dropout |
| Hiccup-mode over-current protection | Shuts down and auto-retries on sustained overload, preventing thermal runaway during short-circuit faults |
| Integrated BST refresh circuitry | Maintains high-side gate drive during extended high-duty-cycle operation by forcing low-side conduction to recharge BST |
Applications
| Automotive Infotainment Power Rail | ADAS Camera Module Supply |
|---|---|
|
Use Scenario: Powers SoC, display interface, and audio codec in head-unit systems with wide input transients. IC Role / Device Role / Timing Role: Primary 5V/3.3V buck regulator delivering 3.5A with AEC-Q100 compliance and CISPR25 Class 5 EMI performance. Use Value: 14μA quiescent current extends battery drain time during vehicle sleep mode; wettable flank ensures field-reliable solder joints. |
Use Scenario: Supplies image sensor and ISP in rear-view or surround-view cameras exposed to engine bay temperatures. IC Role / Device Role / Timing Role: High-efficiency 3.3V step-down converter operating continuously at −40°C to +125°C ambient. Use Value: 80ns min on-time prevents dropout during 6V cold-crank; hiccup OCP protects against lens motor stall faults. |
| Telematics Control Unit (TCU) Core Supply | Automotive Gateway ECU Auxiliary Rail |
|
Use Scenario: Generates stable 1.8V/1.2V core rails for LTE/C-V2X modems and microcontrollers in cellular-connected modules. IC Role / Device Role / Timing Role: Synchronous buck with programmable 2.5MHz switching to minimize inductor size and meet space-constrained TCU layouts. Use Value: External SYNC allows synchronization to baseband clock, reducing beat frequencies and easing EMI filtering. |
Use Scenario: Provides isolated 5V auxiliary supply for CAN FD transceivers and LIN controllers in multi-protocol gateways. IC Role / Device Role / Timing Role: Dual-mode regulator supporting forced CCM for low-noise analog supplies and AAM for low-power sleep states. Use Value: PG signal sequences CAN transceiver enable after VOUT stabilization; BIAS pin improves efficiency under 2A load. |
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 |
|---|---|---|---|
| LM61480QRNXTQ1 | Higher 5A rating, 3.5V–36V input, but 25μA IQ and no wettable flank; uses HTSSOP-16 | Preferred for higher-current gateway ECUs where footprint is less constrained than AOI requirements | Select if >3.5A output or legacy HTSSOP assembly is required; avoid if AOI or <20μA IQ is mandatory |
| TPS62933RTERQ1 | Lower 3A rating, 3V–36V input, 15μA IQ, QFN-16 with wettable flank, but no BST refresh or <100ns on-time | Suitable for non-cold-crank applications like body control modules with stable 9V–16V supply | Choose for cost-sensitive designs where cold-crank dropout is not required and 3A suffices |
Compared with LM61480QRNXTQ1 and TPS62933RTERQ1, MPQ9840GLE-AEC1-P uniquely combines AEC-Q100 Grade-1, wettable flank, 80ns on-time, and 14μA IQ in a single QFN-16 solution-making it optimal for space-constrained, cold-crank-capable ADAS and infotainment subsystems.
Availability
MPQ9840GLE-AEC1-P is available at Aetrix Electronics and suitable for automotive infotainment power rails, ADAS camera modules, telematics control units, and gateway ECUs requiring stable component supply with full AEC-Q100 traceability and long-term production support.
Supply support for MPQ9840GLE-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 belongs to MPS's automotive-grade DC/DC converter product line, engineered specifically for harsh-environment vehicle subsystems requiring AEC-Q100 qualification, low EMI, and extended temperature operation.
FAQ
What is the purpose of the BIAS pin on MPQ9840GLE-AEC1-P?
The BIAS pin accepts an external 5V–18V supply to power the internal control circuitry and gate drivers, bypassing the internal VIN-to-5V regulator. This reduces power dissipation and improves full-load efficiency by up to 1.5%, especially beneficial in thermally constrained automotive modules where junction temperature must stay below 125°C.
How does the MPQ9840GLE-AEC1-P achieve cold-crank operation down to 4.5V input?
It uses BST refresh circuitry that forces the low-side MOSFET to conduct during high-duty-cycle conditions, recharging the bootstrap capacitor even when VIN approaches VOUT. Combined with 80ns minimum on-time and 100% effective duty cycle capability, this maintains regulation during automotive cold-crank events without dropout.
Can MPQ9840GLE-AEC1-P be synchronized to an external clock while operating in AAM mode?
No-synchronization is only active in forced CCM mode. When SYNC is driven high before startup, the device enters forced CCM and accepts external clock input. In AAM (SYNC low at startup), the internal oscillator operates freely to maximize light-load efficiency, and SYNC has no effect post-startup.
What is the recommended PCB layout practice for PGND and AGND connections?
PGND pins (4 and 9) must connect directly to a large, low-impedance copper pour tied to the thermal pad, with multiple vias to inner ground planes. AGND (pin 13) should be routed separately to the same ground plane *only* at a single point near the IC to prevent noise coupling from high di/dt PGND currents into the feedback and error amplifier circuits.
Does the MPQ9840GLE-AEC1-P support adjustable output voltage?
Yes-the MPQ9840GLE-AEC1-P is the adjustable-output variant. Output voltage is set via an external resistor divider from VOUT to FB (pin 15), with a 0.800V reference. Fixed-output versions (e.g., MPQ9840GLE-33-AEC1) tie FB directly to VOUT and are marked with "33" or "5" in the top marking.
What failure protections are integrated into MPQ9840GLE-AEC1-P?
It includes hiccup-mode over-current protection (OCP), short-circuit protection (SCP), thermal shutdown at 170°C with 20°C hysteresis, input under-voltage lockout (2.8V rising threshold), and reverse-current limiting (3A). The open-drain PG signal also provides system-level fault indication when output deviates beyond ±10%.
Is the wettable flank feature on MPQ9840GLE-AEC1-P compatible with standard reflow profiles?
Yes-the wettable flank QFN-16 package is qualified for standard lead-free reflow profiles (J-STD-020). The extended side plating enables reliable solder meniscus formation and automated optical inspection (AOI) without requiring specialized stencil designs or process adjustments.
MPQ9840GLE-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:
- 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:
- 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-AEC1-P FAQ
1.How can I place an order for MPQ9840GLE-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ9840GLE-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-AEC1-P reliable?
The price and inventory of MPQ9840GLE-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-AEC1-P is usually 5 days.
3.What payment methods are accepted for MPQ9840GLE-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ9840GLE-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ9840GLE-AEC1-P?
MPQ9840GLE-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ9840GLE-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-AEC1-P?
For technical support, including MPQ9840GLE-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ9840GLE-AEC1-P requirements.
6.How does Aetrix verify that MPQ9840GLE-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPQ9840GLE-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-AEC1-P meets industry standards.
7.What is the process for return or replacement of MPQ9840GLE-AEC1-P?
All MPQ9840GLE-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ9840GLE-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-AEC1-P part is unused and in its original packaging.
Return procedure for MPQ9840GLE-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPQ9840GLE-AEC1-P Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
