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Monolithic Power Systems Inc. MPQ4432GLE-5-AEC1-P
- Part No.:
- MPQ4432GLE-5-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 16-VQFN
- Datasheet:
-
MPQ4432GLE-5-AEC1-P.pdf
- Description:
- IC REG BUCK 5V 2.2A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,705
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Product details
Overview
MPQ4432GLE-5-AEC1-P 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. It integrates 90mΩ high-side and 40mΩ low-side MOSFETs and supports programmable switching frequency (350kHz–2.5MHz) for automotive infotainment power rails.
For engineers reviewing the MPQ4432GLE-5-AEC1-P datasheet, MPQ4432GLE-5-AEC1-P pinout, MPQ4432GLE-5-AEC1-P application, or MPQ4432GLE-5-AEC1-P equivalent, key selection considerations include its wettable flank QFN-16 package, valley-current OCP with hiccup protection, AAM/CCM mode selectability via SYNC, low-dropout cold-crank operation, and CISPR25 Class 5 EMI compliance in automotive front-end power designs.
Technical Context
The MPQ4432GLE-5-AEC1-P employs current-mode PWM control with internal error amplifier and valley-current over-current protection. Its dual-mode operation-selectable forced CCM or advanced asynchronous mode (AAM)-enables stable regulation across load transients while scaling switching frequency down to minimize gate and switching losses at light loads.
It features integrated bootstrap refresh logic, precision 0.8V feedback reference (±1% typical), 80ns minimum on-time for high-duty-cycle operation, and dedicated BIAS pin for external 5–18V supply to reduce thermal stress. The device implements thermal shutdown (170°C) with 20°C hysteresis and supports external clock synchronization with in-phase or 180° out-of-phase configuration via PHASE pin.
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; no external resistor divider required; simplifies layout and improves accuracy. |
| Continuous Output Current | 2.2A - delivered with integrated 90mΩ HS and 40mΩ LS MOSFETs; enables single-chip solution for mid-power ECUs. |
| Quiescent Current | 10µA in sleep mode - extends battery life in always-on automotive modules (e.g., telematics, body controllers). |
| Switching Frequency | 350kHz to 2.5MHz - programmable via FREQ pin resistor or external SYNC clock; allows EMI optimization and inductor size reduction. |
| OCP Method | Valley-current detection with hiccup mode - prevents inductor saturation during overload; limits average fault current to safe levels. |
| Package | QFN-16 (3mm × 4mm) with wettable flanks - supports automated optical inspection (AOI) and improves solder joint reliability in automotive reflow. |
| AEC-Q100 Grade | Grade 1 (−40°C to +125°C TJ) - qualified for engine bay and ADAS domain controller power stages. |
Pinout & Package
MPQ4432GLE-5-AEC1-P is housed in a thermally enhanced, lead-free, wettable flank QFN-16 (3mm × 4mm) package with exposed thermal pad. Pin 1 is marked by dot; top-side marking includes "MP", year/week code, "4432", lot number, "E", and "5" denoting 5V fixed output.
| 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) near pin. |
| 3,10 SW | Switch node | Internal connection point of HS/LS MOSFETs; drives inductor; high dv/dt node requiring tight loop layout. |
| 4,9 PGND | Power ground | Return path for high-current switching; must be connected to thermal pad and solid copper pour with multiple vias. |
| 5 EN | Enable control | Digital input: >1.05V enables regulator; <0.9V shuts down with 1µA shutdown current. |
| 6 SYNC | Frequency sync & mode control | Accepts 350kHz–2.5MHz clock; high at startup forces CCM; low/floating enables AAM for light-load efficiency. |
| 7 PG | Power good indicator | Open-drain output pulled high when VOUT is within ±10% of 5V; 30µs delay on rising edge, 50µs on falling edge. |
| 8 BIAS | External bias supply | Accepts 5–18V external source to power internal regulator; reduces thermal load vs. VIN-derived VCC. |
| 11 BST | Bootstrap supply | Connect 0.1µF ceramic capacitor between BST and SW to drive HS gate; critical for high-side conduction. |
| 12 VCC | Internal bias rail | 5V regulated output for control logic; requires ≥1µF ceramic decoupling to AGND. |
| 13 AGND | Analog ground | Reference for FB, SS, and error amplifier; separate from PGND to avoid noise coupling into feedback path. |
| 14 SS | Soft-start timing | Capacitor from SS to AGND sets ramp time; internal 10µA current source enables controlled inrush limiting. |
| 15 FB | Feedback input | Internally connected to 5V output (fixed version); no external divider needed - eliminates resistor tolerance errors. |
| 16 FREQ | Frequency programming | Resistor to GND sets switching frequency: 180kΩ = ~475kHz, 82kΩ = ~1MHz, 27kΩ = ~2.5MHz. |
Key Features
| Feature | Design Value |
|---|---|
| Wettable flank QFN-16 | Enables AOI-compatible solder joint inspection and improves long-term mechanical reliability in thermal cycling environments. |
| Advanced Asynchronous Mode (AAM) | Reduces light-load quiescent current to 10µA by dynamically scaling switching frequency - critical for always-on vehicle networks. |
| Low-dropout cold-crank mode | Maintains regulation down to 3.3V VIN - sustains operation during engine start without brownout in body control modules. |
| CISPR25 Class 5 EMI compliance | Validated with standard EMI filters per Figure 17 - meets stringent automotive radiated/conducted emissions requirements without custom shielding. |
| Valley-current OCP with hiccup | Detects inductor current at zero-crossing to prevent runaway; enters low-duty-cycle hiccup to limit average fault current and junction temperature. |
| Programmable soft-start | Adjustable via SS capacitor - prevents inrush current damage to input capacitors and upstream FETs in multi-rail systems. |
Applications
| Infotainment Head Unit Power | ADAS Camera Module Supply |
|---|---|
Use Scenario: Powers SoC, display interface, and audio codec in 12V automotive head units with stop-start capability. IC Role / Device Role / Timing Role: Primary 5V buck regulator delivering 2.2A with AAM-enabled low-IQ sleep during ignition-off state. Use Value: Maintains 10µA quiescent draw during vehicle park mode, extending battery hold-up time beyond 30 days. | Use Scenario: Supplies image sensor, ISP, and serializer in rear-view or surround-view camera ECU. IC Role / Device Role / Timing Role: Fixed 5V point-of-load regulator with fast transient response (<10µs recovery) and cold-crank support. Use Value: Delivers stable 5V under 6V battery dip during cranking - avoids camera black-out and frame loss. |
| Body Control Module (BCM) | Telematics Control Unit (TCU) |
Use Scenario: Powers microcontroller, CAN transceivers, and door lock actuators in centralized BCM. IC Role / Device Role / Timing Role: Main system rail regulator with enable-controlled sequencing and PG-monitored health reporting. Use Value: PG signal feeds MCU watchdog timer; hiccup OCP prevents thermal runaway during shorted window motor faults. | Use Scenario: Supplies LTE modem, GNSS receiver, and secure element in cellular-connected TCU. IC Role / Device Role / Timing Role: Low-noise, EMI-compliant 5V source synchronized to baseband clock to suppress mixing artifacts. Use Value: SYNC pin configured for in-phase operation reduces beat frequencies in RF-sensitive bands below 1GHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output automotive buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54360BQPWPRQ1 | 4.5V–60V input, 3.5A, 100µA IQ, no wettable flanks, no AAM | Higher input range but higher light-load IQ; lacks AAM and wettable flank inspection support | Prefer when >36V transients expected; accept trade-off in sleep-mode battery drain and AOI capability. |
| LM61480QRPTRQ1 | 3.0V–36V input, 8A, 15µA IQ, wettable flanks, FPWM/Auto-mode | Higher current rating and similar IQ, but larger 5mm×6mm package and no fixed 5V option (adjustable only) | Choose when future scalability to >2.2A or adjustable output is required; adds BOM complexity with external resistors. |
Compared with TPS54360BQPWPRQ1, MPQ4432GLE-5-AEC1-P delivers 10× lower sleep IQ and AOI-ready packaging; versus LM61480QRPTRQ1, it offers pin-compatible fixed 5V output in smaller footprint but lower max current - optimal for cost- and space-constrained 2.2A automotive rails.
Availability
MPQ4432GLE-5-AEC1-P is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and body control modules requiring stable component supply, AEC-Q100 compliance, and wettable flank manufacturability.
Supply support for MPQ4432GLE-5-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 MPQ4432 product line targets automotive-grade DC/DC conversion with emphasis on low IQ, wide VIN range, and functional safety-aware protection - engineered specifically for next-generation E/E architectures in passenger vehicles and commercial fleets.
FAQ
What is the purpose of the BIAS pin, and how should it be used?
The BIAS pin accepts an external 5–18V supply to power the internal 5V regulator, bypassing VIN-derived VCC. This reduces power dissipation and junction temperature, especially when VIN exceeds 12V. For best thermal performance, connect BIAS to a clean 5V rail (e.g., post-LDO VOUT). If unused, leave floating or tie to AGND - never apply voltage outside 0–18V.
Does MPQ4432GLE-5-AEC1-P require an external feedback resistor divider?
No. The "-5" suffix denotes a factory-trimmed fixed 5V output version. Pin 15 (FB) is internally connected to the 5V output node; no external resistor divider is needed. This eliminates resistor tolerance errors, saves board space, and improves output accuracy to ±2.5% over temperature and line.
How does the PHASE pin affect synchronization behavior?
The PHASE pin selects whether the internal oscillator locks in-phase or 180° out-of-phase with the external SYNC clock. Driving PHASE high selects in-phase; driving low selects 180° phase shift. This feature enables interleaving with other converters to reduce input ripple current. If unused, tie PHASE to PGND to avoid floating node noise coupling.
What is the minimum recommended output capacitance for stable operation?
MPS recommends ≥47µF total ceramic output capacitance (X7R or X5R, 1206 or larger) placed close to VOUT and PGND pins. For optimal transient response and EMI suppression, use parallel combination of 22µF + 22µF + 4.7µF. Equivalent series resistance (ESR) should be ≤5mΩ; avoid high-ESR tantalum or aluminum electrolytic caps in main output filter.
Can MPQ4432GLE-5-AEC1-P operate with input voltage below 3.3V?
No. The absolute minimum operating VIN is 3.3V per datasheet specifications. Below this, UVLO disables the regulator. During cold-crank events, battery voltage may dip to ~3.0V - the device will shut down and restart once VIN rises above 3.2V (with 150mV hysteresis). For sub-3.3V operation, consider MPQ4423A or other ultra-low-VIN alternatives.
Is the thermal pad electrically connected, and how should it be handled in PCB layout?
Yes, the exposed thermal pad is internally connected to PGND. It must be soldered to a solid PGND copper pour with ≥4 thermal vias (0.3mm diameter) connecting to inner PGND planes. Do not float the pad or isolate it - doing so degrades thermal performance and risks exceeding 150°C junction temperature under full load.
What failure modes trigger hiccup mode versus latch-off?
Hiccup mode activates only during sustained over-current events detected by valley-current sensing - the device cycles ON/OFF with ~100ms period until fault clears. Thermal shutdown and undervoltage lockout cause immediate latch-off; these require VIN cycle or EN toggle to recover. Hiccup protects against shorted outputs without requiring manual reset.
MPQ4432GLE-5-AEC1-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- 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):
- 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, Wettable Flank
- Supplier Device Package:
- 16-QFN (3x4)
MPQ4432GLE-5-AEC1-P FAQ
1.How can I place an order for MPQ4432GLE-5-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4432GLE-5-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 MPQ4432GLE-5-AEC1-P reliable?
The price and inventory of MPQ4432GLE-5-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 MPQ4432GLE-5-AEC1-P is usually 5 days.
3.What payment methods are accepted for MPQ4432GLE-5-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4432GLE-5-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4432GLE-5-AEC1-P?
MPQ4432GLE-5-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4432GLE-5-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 MPQ4432GLE-5-AEC1-P?
For technical support, including MPQ4432GLE-5-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4432GLE-5-AEC1-P requirements.
6.How does Aetrix verify that MPQ4432GLE-5-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPQ4432GLE-5-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 MPQ4432GLE-5-AEC1-P meets industry standards.
7.What is the process for return or replacement of MPQ4432GLE-5-AEC1-P?
All MPQ4432GLE-5-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4432GLE-5-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 MPQ4432GLE-5-AEC1-P part is unused and in its original packaging.
Return procedure for MPQ4432GLE-5-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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