My Inquiry
My Account
Monolithic Power Systems Inc. MPQ4432GL-AEC1-Z
- Part No.:
- MPQ4432GL-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 16-PowerVQFN
- Datasheet:
-
MPQ4432GL-AEC1-Z.pdf
- Description:
- IC REG BUCK ADJ 2.2A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MPQ4432GL-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, synchronous step-down DC/DC converter with integrated 90mΩ high-side and 40mΩ low-side MOSFETs, delivering up to 2.2A output current across a 3.3V–36V input range. It features programmable switching frequency (350kHz–2.5MHz), 10μA sleep-mode quiescent current, and advanced asynchronous mode (AAM) for automotive battery-powered systems requiring cold-crank support and CISPR25 Class 5 EMI compliance.
For engineers reviewing the MPQ4432GL-AEC1-Z datasheet, MPQ4432GL-AEC1-Z pinout, MPQ4432GL-AEC1-Z application, or MPQ4432GL-AEC1-Z equivalent, key selection criteria include its AEC-Q100 qualification, QFN-16 wettable flank package, valley-current OCP with hiccup protection, low-dropout mode, and external clock synchronization capability for noise-sensitive automotive power rails.
Technical Context
The MPQ4432GL-AEC1-Z employs current-mode PWM control with valley-current over-current protection and thermal shutdown at 170°C. Its internal error amplifier compares 0.8V reference against FB voltage, generating VCOMP to regulate peak inductor current per cycle.
It supports dual operating modes: forced continuous conduction mode (CCM) via SYNC high, or advanced asynchronous mode (AAM) via SYNC low/floating-enabling dynamic frequency scaling down to ~10kHz at light load to minimize gate and switching losses while maintaining 1μA shutdown current.
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 min) and load-dump transients. |
| Output Current | 2.2A continuous - sufficient for powering ADAS sensors, infotainment SoCs, and body control modules. |
| Quiescent Current | 10μA in sleep mode - enables >1-year battery standby in always-on vehicle subsystems. |
| Switching Frequency | 350kHz to 2.5MHz - programmable via FREQ resistor or external SYNC clock for EMI optimization and layout flexibility. |
| Feedback Reference | 0.800V ±2% - enables precise output regulation for 3.3V, 3.8V, or 5V fixed versions or adjustable designs. |
| Thermal Shutdown | 170°C with 20°C hysteresis - ensures fault-tolerant operation under sustained overload or poor PCB thermal design. |
| OCP Method | Valley-current detection with hiccup mode - prevents inductor saturation during short-circuit while limiting average fault current. |
Pinout & Package
MPQ4432GL-AEC1-Z is housed in a thermally enhanced QFN-16 (3mm × 4mm) package with wettable flanks for automated optical inspection (AOI) and improved solder joint reliability in automotive production.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PHASE | Synchronization phase select | Configures SYNC input as in-phase (PHASE = high) or 180° out-of-phase (PHASE = low); 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; connects internally to both pins for low-inductance high-current path. |
| 4,9 PGND | Power ground | High-current return path for MOSFETs; must be connected via multiple vias to inner-layer ground plane. |
| 5 EN | Enable control | Digital on/off control with 0.9–1.2V rising threshold; pull below 0.4V to enter 1µA shutdown mode. |
| 6 SYNC | Frequency sync & mode select | Accepts 350kHz–2.5MHz external clock; also selects CCM (high) or AAM (low/floating) at startup. |
| 7 PG | Power good open-drain | Indicates VOUT within ±10% of nominal after 30µs delay; requires external pull-up to VCC or BIAS. |
| 8 BIAS | External bias supply | Accepts 5V–18V external source to reduce VCC regulator loss and improve efficiency; float or ground if unused. |
| 11 BST | Bootstrap supply | Provides gate drive voltage for high-side MOSFET; requires 0.1µF ceramic capacitor between BST and SW. |
| 12 VCC | Internal bias rail | 5V regulated output for logic and drivers; requires ≥1µF ceramic decoupling to AGND. |
| 13 AGND | Analog ground | Reference for feedback, error amp, and soft-start; must be separated from PGND and joined at single point. |
| 14 SS | Soft-start timing | Charged by internal 10µA current; external capacitor sets ramp time to limit inrush current during startup. |
| 15 FB | Feedback input | Compares output voltage against 0.8V reference; connect to resistor divider (adjustable) or directly to VOUT (fixed). |
| 16 FREQ | Frequency programming | Resistor-to-GND sets switching frequency: 180kΩ = 475kHz, 82kΩ = 1MHz, 27kΩ = 2.5MHz. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Rated for -40°C to +125°C junction temperature with full automotive reliability testing and traceability. |
| Wettable flank QFN-16 package | Enables automated AOI of solder joints on bottom leads-critical for zero-defect automotive manufacturing. |
| Low-dropout mode | Maintains regulation down to VIN – VOUT ≈ 0.8V, supporting start-stop engine operation with 6V battery minimum. |
| Programmable soft-start | External capacitor on SS pin controls ramp rate to prevent output overshoot and inrush stress on input capacitors. |
| CISPR25 Class 5 EMI compliance | Validated with recommended layout and EMI filters-meets stringent radiated/conducted emission limits for automotive ECUs. |
| Valley-current OCP with hiccup | Detects low-side current at zero-crossing to avoid false triggering; enters low-duty-cycle hiccup to limit average fault power. |
Applications
| ADAS Camera Module Power | Automotive Infotainment SoC Rail |
|---|---|
Use Scenario: Powers 3.3V image sensor and ISP in forward-facing camera with ambient temperature up to 105°C. IC Role / Device Role / Timing Role: Primary buck regulator supplying clean, low-noise 3.3V at 1.5A with fast transient response to video frame bursts. Use Value: AAM mode maintains <15μA quiescent current during idle frames; 80ns minimum on-time enables stable 3.3V output from 6V cold-crank input. | Use Scenario: Generates 5V rail for application processor, GPU, and DDR memory in head-unit with CAN/FlexRay connectivity. IC Role / Device Role / Timing Role: High-efficiency synchronous buck with SYNC input synchronized to system clock to suppress beat-frequency noise in audio subsystems. Use Value: External clock sync eliminates switching noise coupling into analog audio paths; BIAS pin connection to 5V VOUT improves full-load efficiency by 2.1%. |
| Body Control Module (BCM) | Electric Power Steering (EPS) MCU Supply |
Use Scenario: Supplies 3.8V microcontroller and LIN transceivers in door module exposed to 125°C under-hood environment. IC Role / Device Role / Timing Role: Fixed-output buck converter with integrated MOSFETs and thermal shutdown for robustness against prolonged overtemperature. Use Value: AEC-Q100 Grade 1 rating ensures 15-year lifetime; 10μA sleep current extends battery life during vehicle sleep mode. | Use Scenario: Provides 5V supply to EPS motor controller MCU during high-current steering assist with rapid load steps. IC Role / Device Role / Timing Role: Fast-loop current-mode regulator with valley-current OCP to survive motor stall-induced short-circuit events. Use Value: Hiccup-mode OCP limits average fault current to <100mA during sustained short, preventing thermal runaway in sealed EPS housing. |
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 |
|---|---|---|---|
| LM61480-Q1 | Higher 3.5A output, 4.2V–36V input, but 15μA IQ (vs. 10μA) and no AAM mode. | Lacks adaptive light-load efficiency; requires external compensation network. | Choose when higher current headroom or TI ecosystem compatibility is prioritized over ultra-low IQ. |
| TPS62933-Q1 | Lower 3A rating, 3V–36V input, 12μA IQ, supports spread-spectrum but no valley-current OCP. | No hiccup-mode fault handling; limited cold-crank dropout performance. | Select for spread-spectrum EMI reduction where valley-current protection is not required. |
Compared with LM61480-Q1 and TPS62933-Q1, MPQ4432GL-AEC1-Z delivers superior light-load efficiency via AAM, tighter output accuracy (±1.5% vs. ±2%), and integrated valley-current OCP-making it optimal for cost-sensitive, thermally constrained automotive modules requiring long battery standby and robust fault tolerance.
Availability
MPQ4432GL-AEC1-Z is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment SoC rails, and body control units requiring stable component supply with AEC-Q100 traceability and extended temperature support.
Supply support for MPQ4432GL-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 core expertise in DC/DC conversion, motor drivers, and LED lighting controllers.
The MPQ4432 belongs to MPS's automotive-grade power management portfolio, designed specifically for demanding vehicle subsystems requiring AEC-Q100 qualification, low IQ, and robust EMI performance in compact form factors.
FAQ
What is the maximum allowable input voltage for MPQ4432GL-AEC1-Z?
The absolute maximum input voltage is 40V, but the recommended operating range is 3.3V to 36V. Exceeding 36V risks violating the 40V absolute max rating under transient conditions, especially during load dump events. For automotive applications, use TVS clamping or input filtering to ensure VIN stays within specification during transients.
Does MPQ4432GL-AEC1-Z support fixed-output voltage configurations?
Yes - MPQ4432GL-AEC1-Z is the base part number for the adjustable version, but Monolithic Power offers factory-programmed fixed-output variants: MPQ4432GLE-38-AEC1-Z (3.8V) and MPQ4432GLE-5-AEC1-Z (5V). These integrate internal feedback resistors and require FB tied directly to VOUT, reducing BOM count and layout complexity.
How does the advanced asynchronous mode (AAM) improve light-load efficiency?
AAM dynamically reduces switching frequency under light load by blocking the internal clock until VCOMP crosses a threshold (VAAM), thereby minimizing gate drive and switching losses. This achieves 10μA quiescent current - 40% lower than forced CCM - while maintaining regulation without burst-mode noise artifacts.
Can MPQ4432GL-AEC1-Z be synchronized to an external clock while operating in AAM?
No - external clock synchronization is only active in forced CCM mode. When SYNC is driven high before startup, the device locks to the external clock and disables AAM. To retain AAM, leave SYNC floating or pulled low at startup; SYNC then functions solely as a CCM enable signal, not a sync input.
What is the purpose of the BIAS pin, and how should it be used?
The BIAS pin accepts an external 5V–18V supply to power the internal 5V regulator, bypassing VIN-derived regulation. This reduces power dissipation in the VCC LDO, improving full-load efficiency by up to 2.1% and lowering die temperature - especially beneficial when VOUT is used as the BIAS source in cascaded power architectures.
Is the QFN-16 package of MPQ4432GL-AEC1-Z compatible with standard reflow profiles?
Yes - the QFN-16 (3mm × 4mm) package with wettable flanks is qualified for IPC/JEDEC J-STD-020D moisture sensitivity level 1 and supports standard lead-free reflow profiles (peak 260°C). The wettable flank design enables reliable AOI inspection of all solder joints, meeting automotive zero-defect assembly requirements.
How is over-current protection implemented, and what happens during a short circuit?
OCP uses valley-current detection on the low-side MOSFET to trigger hiccup mode: the device shuts down for ~10ms, then attempts restart. This limits average short-circuit current to <100mA, preventing thermal runaway and enabling safe auto-recovery without external circuitry - critical for unattended automotive modules.
MPQ4432GL-AEC1-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 16-PowerVQFN
- 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:
- 2.2A
- Frequency - Switching:
- 350kHz ~ 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (3x4)
MPQ4432GL-AEC1-Z FAQ
1.How can I place an order for MPQ4432GL-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4432GL-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 MPQ4432GL-AEC1-Z reliable?
The price and inventory of MPQ4432GL-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 MPQ4432GL-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ4432GL-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4432GL-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4432GL-AEC1-Z?
MPQ4432GL-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4432GL-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 MPQ4432GL-AEC1-Z?
For technical support, including MPQ4432GL-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4432GL-AEC1-Z requirements.
6.How does Aetrix verify that MPQ4432GL-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ4432GL-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 MPQ4432GL-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ4432GL-AEC1-Z?
All MPQ4432GL-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4432GL-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 MPQ4432GL-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ4432GL-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPQ4432GL-AEC1-Z 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…
