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Monolithic Power Systems Inc. MPQ4432GLE-5-AEC1-Z
- Part No.:
- MPQ4432GLE-5-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 16-PowerVQFN
- Datasheet:
-
MPQ4432GLE-5-AEC1-Z.pdf
- Description:
- IC REG BCK 3.3/3.8/5V 2.2A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,249
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Product details
Overview
MPQ4432GLE-5-AEC1-Z from Monolithic Power Systems is a synchronous step-down DC/DC converter with AEC-Q100 Grade 1 qualification, fixed 5V output, 3.3V–36V input range, 2.2A continuous output current, and ultra-low 10μA sleep-mode quiescent current-designed for automotive infotainment power rails and ADAS domain controllers requiring cold-crank resilience and CISPR 25 Class 5 EMI compliance.
For engineers reviewing the MPQ4432GLE-5-AEC1-Z datasheet, MPQ4432GLE-5-AEC1-Z pinout, MPQ4432GLE-5-AEC1-Z application, or MPQ4432GLE-5-AEC1-Z equivalent, key selection criteria include its wettable-flank QFN-16 package for automated optical inspection, programmable frequency (350kHz–2.5MHz), selectable forced CCM/AAM mode, low-dropout operation during cold-crank, and valley-current OCP with hiccup protection.
Technical Context
The MPQ4432GLE-5-AEC1-Z implements current-mode PWM control with integrated 90mΩ high-side and 40mΩ low-side MOSFETs, enabling fast transient response and stable regulation across ±10% output accuracy (4.875V–5.125V at TJ = +25°C). Its advanced asynchronous mode (AAM) dynamically scales switching frequency under light load to minimize gate-driving and switching losses.
It supports external clock synchronization (350kHz–2.5MHz) with in-phase or 180° out-of-phase selection via the PHASE pin, and integrates a precision 0.8V reference, 80ns minimum on-time, and thermal shutdown at 170°C with 20°C hysteresis-ensuring robust operation in automotive junction temperature ranges (−40°C to +125°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.3V to 36V - supports full automotive battery range including cold-crank (down to 3.3V) and load-dump transients. |
| Output Voltage | Fixed 5.0V ±2.5% - factory-trimmed for direct microcontroller I/O and USB peripheral rail use without external feedback resistors. |
| Continuous Output Current | 2.2A - sustained delivery with internal MOSFETs; no external power stage required. |
| Quiescent Current | 10μA in sleep mode - enables >1-year battery standby in always-on automotive modules. |
| Switching Frequency | 350kHz to 2.5MHz - programmable via FREQ pin resistor or external SYNC signal for EMI optimization and layout flexibility. |
| Protection Features | OCP (valley-current detection), hiccup-mode short-circuit response, thermal shutdown (170°C), UVLO (2.8V rising threshold), and PG fault indication. |
| EMI Performance | CISPR 25 Class 5 compliant - validated with standard EMI filters for both conducted and radiated emissions (horizontal/vertical, 150kHz–1GHz). |
Pinout & Package
MPQ4432GLE-5-AEC1-Z is housed in a wettable-flank QFN-16 (3mm × 4mm) package with exposed thermal pad, optimized for automated optical inspection (AOI) and enhanced solder joint reliability in automotive reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PHASE | Synchronization phase selector | Drives high for in-phase sync with external clock; low for 180° out-of-phase; tie to GND if unused. |
| 2 VIN | Main power input | Supplies internal control circuitry and power switches; requires local ceramic decoupling (≥10µF) to PGND. |
| 3,10 SW | Switch node | Internal connection point of HS/LS MOSFETs; high dv/dt node requiring minimized loop area and tight layout. |
| 4,9 PGND | Power ground | Return path for high-current switching; must be connected via multiple vias to inner-layer copper pour. |
| 5 EN | Enable control | Digital input: <0.9V disables (1µA shutdown), >1.05V enables; must not be left floating. |
| 6 SYNC | Frequency sync / mode select | Accepts 350kHz–2.5MHz clock; high at startup forces CCM, low/floating enables AAM for light-load efficiency. |
| 7 PG | Power good open-drain output | Pulled high when VOUT is within ±10% of 5V; 30µs delay on rise, 50µs on fall; requires external pull-up. |
| 8 BIAS | External bias supply input | Accepts 5V–18V external source (e.g., VOUT) to reduce dissipation and improve efficiency; float or ground if unused. |
| 11 BST | Bootstrap supply | Connect 0.1µF ceramic capacitor between BST and SW to drive high-side MOSFET gate. |
| 12 VCC | Internal bias regulator output | 5V regulated supply for control logic; requires ≥1µF ceramic decoupling to AGND. |
| 13 AGND | Analog ground reference | Separate ground for FB, SS, and error amplifier; connect to PGND at single-point star ground. |
| 14 SS | Soft-start timing input | 10µA current source charges external capacitor; sets ramp time; floating enables 0.7ms internal soft-start. |
| 15 FB | Feedback input | Internally connected to 5V output in fixed-version; no external divider needed-simplifies BOM and layout. |
| 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 | Validated for −40°C to +125°C ambient operation with full parametric testing per automotive stress requirements. |
| Wettable flank QFN-16 package | Enables AOI-compatible solder joint inspection and improves long-term reliability in thermal cycling environments. |
| Advanced Asynchronous Mode (AAM) | Reduces light-load quiescent current to 10μA by dynamically scaling frequency-critical for always-on vehicle networks. |
| Low-dropout cold-crank mode | Maintains regulation down to VIN = 3.3V with high-duty-cycle operation-supports engine start-up in 12V systems. |
| Valley-current over-current protection | Detects inductor current at zero-crossing to prevent runaway; triggers hiccup mode for safe short-circuit handling. |
| CISPR 25 Class 5 EMI compliance | Validated with standard filter design per Figure 17-meets stringent automotive radiated/conducted emission limits. |
Applications
| Infotainment Head Unit Power | ADAS Camera Module Supply |
|---|---|
|
Use Scenario: Powers SoC core, DDR memory, and display interface in automotive head units with variable input voltage during engine cranking and stop-start cycles. IC Role / Device Role / Timing Role: Primary 5V buck regulator delivering 2.2A with low-noise, fast-transient response and cold-crank hold-up. Use Value: Eliminates need for external LDO post-regulation due to ±2.5% output accuracy and 10μA sleep current extending battery life during parking mode. |
Use Scenario: Supplies image sensor, ISP, and serializer in rear-view or surround-view camera modules mounted in exterior locations. IC Role / Device Role / Timing Role: Fixed-output DC/DC converter providing clean, EMI-compliant 5V rail with thermal shutdown and OCP for field-reliability. Use Value: Wettable flank package ensures solder joint integrity under thermal shock; AAM extends runtime in battery-backed parking surveillance mode. |
| Body Control Module (BCM) Subsystem | Telematics Control Unit (TCU) Power |
|
Use Scenario: Generates 5V for CAN transceivers, LIN interfaces, and microcontroller peripherals in centralized body electronics. IC Role / Device Role / Timing Role: High-efficiency synchronous buck converter with enable control and PG signaling for system-level power sequencing. Use Value: Programmable frequency allows tuning to avoid noise coupling into sensitive analog sensors; PG output enables firmware fault logging. |
Use Scenario: Powers LTE/Wi-Fi modem, GNSS receiver, and secure MCU in cellular-connected TCU operating across wide temperature and input voltage ranges. IC Role / Device Role / Timing Role: Automotive-grade step-down regulator with BIAS pin support for efficiency-optimized architecture using VOUT as bias source. Use Value: External BIAS capability reduces thermal load by >30% vs. VIN-derived bias-enabling higher power density in compact TCU enclosures. |
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 |
|---|---|---|---|
| MPQ4433GLE-5-AEC1-Z | Higher 3A output current; identical pinout, package, and feature set; 100mΩ/50mΩ RDS(on); slightly higher IQ (12μA). | Better suited for future-proofed designs requiring margin above 2.2A or higher peak loads. | Select when 3A capability is needed without layout change; otherwise, MPQ4432GLE-5-AEC1-Z offers optimal cost/performance for 2.2A use cases. |
| TPS54360BQPWPRQ1 | 3.5V–60V input; 3.5A output; 14-pin HTSSOP; no wettable flank; 18μA IQ; no AAM; different compensation scheme. | Preferred where wider input range or higher current is mandatory, but requires redesign for package, layout, and loop compensation. | Choose only if input exceeds 36V or output >2.2A is required; MPQ4432GLE-5-AEC1-Z provides superior light-load efficiency and smaller footprint. |
Compared with MPQ4433GLE-5-AEC1-Z, the MPQ4432GLE-5-AEC1-Z trades 0.8A current headroom for lower thermal dissipation and cost; versus TPS54360BQPWPRQ1, it delivers better EMI performance, smaller size, and true AAM-based light-load efficiency-making it optimal for space-constrained, always-on automotive subsystems.
Availability
MPQ4432GLE-5-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and telematics control units requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for MPQ4432GLE-5-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 leadership in DC/DC conversion, motor drivers, and LED lighting solutions.
The MPQ4432 product line targets automotive power management, delivering high-efficiency, AEC-Q100-qualified buck converters with integrated MOSFETs, advanced light-load modes, and robust protection-designed specifically for harsh-temperature, safety-critical vehicle subsystems.
FAQ
What is the output voltage tolerance of MPQ4432GLE-5-AEC1-Z at full temperature range?
The output voltage is specified as 4.875V to 5.125V (±2.5%) at TJ = +25°C, and maintains ±3.5% accuracy across −40°C to +125°C junction temperature. This is achieved via factory trimming of the internal 0.8V reference and feedback network, eliminating need for external calibration.
Can MPQ4432GLE-5-AEC1-Z operate with input voltage below 3.3V?
No. The absolute minimum input voltage is 3.3V per datasheet specifications. Below this, UVLO prevents startup, and the internal regulator cannot sustain VCC. During cold-crank events, the device holds regulation down to 3.3V but will shut down if VIN drops further.
How does the BIAS pin improve efficiency?
When BIAS is connected to an external 5V–18V source (e.g., the output rail), it powers the internal 5V regulator instead of VIN, reducing conduction loss in the VIN-to-VCC LDO path. This lowers total power dissipation by up to 35% at high VIN, improving thermal margin in compact layouts.
Is external compensation required for stability?
No. The MPQ4432GLE-5-AEC1-Z features an optimized internal compensation network designed for typical 4.7µH–10µH inductors and 22µF–47µF output capacitors. Stability is guaranteed across recommended component ranges without external compensation components.
What is the purpose of the PHASE pin, and how should it be used?
The PHASE pin selects synchronization phase relative to an external clock applied to SYNC: driving PHASE high yields in-phase operation; driving low yields 180° out-of-phase. It enables interleaving with other converters to reduce input ripple. If unused, tie to GND to prevent noise coupling.
Does MPQ4432GLE-5-AEC1-Z support spread-spectrum frequency modulation?
No. The device supports fixed-frequency operation or external clock synchronization, but does not implement internal spread-spectrum modulation. EMI reduction is achieved via programmable frequency selection, optimized layout guidance, and validated CISPR 25 filter implementation.
How is power good (PG) behavior affected during startup and fault conditions?
PG remains low until VOUT reaches 90% of 5V (4.5V), then asserts high after a 30µs deglitch timer. If VOUT falls below 84% (4.2V) or rises above 110% (5.5V), PG pulls low after a 50µs delay-providing reliable, debounced fault signaling for system monitoring and safe shutdown.
MPQ4432GLE-5-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:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.3V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 3.3V, 3.8V, 5V
- Voltage - Output (Max):
- -
- 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)
MPQ4432GLE-5-AEC1-Z FAQ
1.How can I place an order for MPQ4432GLE-5-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4432GLE-5-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 MPQ4432GLE-5-AEC1-Z reliable?
The price and inventory of MPQ4432GLE-5-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 MPQ4432GLE-5-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ4432GLE-5-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4432GLE-5-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4432GLE-5-AEC1-Z?
MPQ4432GLE-5-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4432GLE-5-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 MPQ4432GLE-5-AEC1-Z?
For technical support, including MPQ4432GLE-5-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4432GLE-5-AEC1-Z requirements.
6.How does Aetrix verify that MPQ4432GLE-5-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ4432GLE-5-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 MPQ4432GLE-5-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ4432GLE-5-AEC1-Z?
All MPQ4432GLE-5-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4432GLE-5-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 MPQ4432GLE-5-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ4432GLE-5-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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