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Monolithic Power Systems Inc. MPQ4420HGJ-AEC1-Z
- Part No.:
- MPQ4420HGJ-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
MPQ4420HGJ-AEC1-Z.pdf
- Description:
- IC REG BUCK ADJ 2A TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:5,672
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Product details
Overview
MPQ4420HGJ-AEC1-Z from Monolithic Power Systems is a high-efficiency, AEC-Q100 Grade 1 qualified synchronous step-down DC/DC converter delivering up to 2A continuous output current with 4V–36V input range, 0.8V–32.4V adjustable output, and 410kHz default switching frequency. It integrates 90mΩ/55mΩ high- and low-side MOSFETs and features power good (PG), thermal shutdown, hiccup-mode over-current protection, and automotive cold-crank support.
For engineers reviewing the MPQ4420HGJ-AEC1-Z datasheet, MPQ4420HGJ-AEC1-Z pinout, MPQ4420HGJ-AEC1-Z application, or MPQ4420HGJ-AEC1-Z equivalent, this device serves as a compact, robust power supply solution for automotive infotainment, ADAS camera modules, and industrial control systems requiring wide VIN tolerance, high duty cycle capability, and functional safety compliance.
Technical Context
The MPQ4420HGJ-AEC1-Z employs peak-current-mode control with internal compensation, enabling stable regulation across line and load variations without external loop components. Its integrated bootstrap driver supports high-duty-cycle operation down to 2.5V VOUT during cold-crank conditions, while the 70ns minimum on-time enables high-VIN-to-low-VOUT conversion ratios.
Current-mode architecture delivers fast transient response to load steps, and the 200kHz–2.2MHz external synchronization capability allows EMI optimization in noise-sensitive automotive environments. The 0.792V ±12mV feedback reference ensures precise output voltage accuracy across temperature and process variation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 36V - supports full automotive battery range including cold-crank (down to 4V) and load-dump transients. |
| Output Current | 2A continuous - sufficient for powering microcontrollers, sensors, and interface ICs in distributed automotive subsystems. |
| Switching Frequency | Default 410kHz, syncable 200kHz–2.2MHz - balances efficiency, size, and EMI performance; enables spread-spectrum compatibility. |
| Feedback Reference | 0.792V ±12mV - enables accurate 3.3V, 5V, or custom rail generation with <±1% output error at full load and temperature. |
| RDS(on) (HS/LS) | 90mΩ / 55mΩ - minimizes conduction loss at 2A, enabling >92% peak efficiency at 12VIN/3.3VOUT. |
| Thermal Shutdown | 170°C trip, 140°C hysteresis - protects against sustained overload or poor PCB thermal design while allowing recovery without manual reset. |
| Power Good Threshold | 90% of VFB rising, 84% falling - provides clean, glitch-free system power sequencing with 90μs delay for reliable MCU boot timing. |
Pinout & Package
MPQ4420HGJ-AEC1-Z is housed in an 8-pin TSOT23 package (2.9mm × 1.6mm × 0.85mm), optimized for space-constrained automotive PCBs with exposed pad for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PG | Open-drain power-good indicator | Signals valid output regulation; requires external pull-up to VCC or system rail for MCU reset coordination. |
| 2 IN | Main input supply connection | Accepts 4V–36V; must be decoupled with ≥22µF ceramic + 0.1µF high-frequency cap placed adjacent to pins 2 and 4. |
| 3 SW | Switch node | Drives external inductor; high di/dt node requiring short, wide copper trace and separation from analog signals (e.g., FB). |
| 4 GND | System ground reference | Primary return path for power and feedback; requires direct connection to large ground plane with multiple vias. |
| 5 BST | Bootstrap supply for high-side gate driver | Requires 0.1µF–1µF capacitor between BST and SW; 20Ω series resistor strongly recommended to suppress ringing. |
| 6 EN/SYNC | Enable input and external clock sync | Logic-high (>1.4V) enables regulator; external 200kHz–2.2MHz clock applied here synchronizes switching for EMI reduction. |
| 7 VCC | Bias supply for internal circuitry | Internally regulated ~5V output; requires 0.1µF–0.22µF ceramic decoupling close to pin and GND. |
| 8 FB | Feedback voltage sensing | Compares output divider voltage to 0.792V reference; sensitive node requiring shortest possible trace to resistors and guard ring. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +125°C ambient operation with full reliability testing - meets automotive electronics functional safety requirements. |
| Synchronous rectification | Integrated 90mΩ HS / 55mΩ LS MOSFETs eliminate external diode losses, improving light-load efficiency by up to 15% vs. asynchronous designs. |
| High-duty-cycle cold-crank support | Operates down to 4VIN with >92% duty cycle - maintains 3.3V/2A output during engine start when battery dips to 6V. |
| Internal soft-start (1.5ms) | Prevents output overshoot and inrush current during power-up - eliminates need for external soft-start circuitry or timing capacitors. |
| Hiccup-mode over-current protection | Enters periodic restart on sustained short-circuit - limits average fault current to <300mA, preventing thermal runaway and enabling self-recovery. |
Applications
| Automotive Infotainment Head Unit | ADAS Camera Module Power Supply |
|---|---|
|
Use Scenario: Powers SoC, display interface, and audio codec in vehicle head units operating across 6V–16V battery range with cold-crank events. IC Role / Device Role / Timing Role: Primary 3.3V/2A buck regulator supplying core logic rails; PG signal sequences SoC boot after stable VOUT. Use Value: Maintains regulation during 4V cold-crank dips without brownout, eliminating system resets and ensuring uninterrupted navigation/audio playback. |
Use Scenario: Supplies image sensor, ISP, and serializer in rear-view or surround-view cameras mounted in exterior locations. IC Role / Device Role / Timing Role: Point-of-load converter generating 1.8V/2A for CMOS image sensor; thermal shutdown prevents damage in sealed enclosures. Use Value: Delivers consistent low-noise power under wide temperature (-40°C to +105°C junction), preserving image quality and reducing hot-pixel artifacts. |
| Industrial CAN Gateway Controller | Automotive Body Control Module (BCM) |
|
Use Scenario: Powers ARM Cortex-M7 MCU, CAN FD transceiver, and EEPROM in ruggedized vehicle communication gateways. IC Role / Device Role / Timing Role: Secondary 5V/2A regulator fed from 12V main rail; EN/SYNC pin synchronized to system clock to reduce conducted EMI. Use Value: Synchronization eliminates beat frequencies with CAN FD bit timing, meeting CISPR-25 Class 3 radiated emissions limits. |
Use Scenario: Provides 5V rail for door module microcontrollers, LIN transceivers, and LED drivers in multi-zone body electronics. IC Role / Device Role / Timing Role: High-reliability buck converter with hiccup OCP - survives repeated short circuits caused by wiring harness abrasion. Use Value: Self-recovering fault behavior avoids permanent fuse blowouts or module replacement, reducing warranty costs and field failures. |
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 |
|---|---|---|---|
| LM61480QPWPRQ1 | Higher 3.5A rating, 2.2MHz max fSW, but larger HTSSOP-16 package and no built-in PG pin. | Preferred for higher-current ADAS ECUs where board area is less constrained and external PG logic is acceptable. | Select if >2A output or >2MHz switching is required; avoid if TSOT23 footprint or integrated PG is mandatory. |
| TPS54240DGQR | Non-synchronous (external diode), lower 42V max VIN, no AEC-Q100 qualification, 100kHz–2.5MHz sync range. | Suitable for cost-sensitive industrial controls where automotive qualification and efficiency are secondary. | Choose only for non-automotive use; not compliant for AEC-Q100 Grade 1 applications or cold-crank operation. |
Compared with LM61480QPWPRQ1 and TPS54240DGQR, MPQ4420HGJ-AEC1-Z uniquely combines AEC-Q100 Grade 1 qualification, TSOT23-8 footprint, integrated PG, and cold-crank capability - making it optimal for space-limited, safety-critical automotive subsystems where reliability and form factor are non-negotiable.
Availability
MPQ4420HGJ-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MPQ4420HGJ-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 MPQ4420H product line targets automotive-grade power management, designed specifically to meet AEC-Q100 requirements while delivering high efficiency, small footprint, and robust protection in harsh vehicular environments.
FAQ
What is the minimum input voltage required for startup under cold-crank conditions?
The MPQ4420HGJ-AEC1-Z starts regulation at 4V input due to its internal UVLO with 3.5V rising threshold and 3.3V falling threshold. This ensures reliable operation during automotive engine cranking when battery voltage drops to 6V–8V, and the device sustains >92% duty cycle to maintain 3.3V output even at 4VIN.
Does the device require external compensation components for stability?
No external compensation is required. The MPQ4420HGJ-AEC1-Z features an internally compensated current-mode controller optimized for standard 10µH inductors and ceramic output capacitors. Stability is maintained across 1µF–100µF output capacitance and 20mΩ–100mΩ ESR, per the datasheet's Type II compensation network.
How does the hiccup-mode over-current protection behave during a sustained short circuit?
When FB falls below 84% of VFB (≈673mV), the device enters hiccup mode: it disables switching for ~20ms, then attempts restart. Average short-circuit current is limited to ~250mA, preventing thermal runaway and enabling automatic recovery once the fault is removed - critical for unattended automotive modules.
Can the switching frequency be adjusted without using an external clock source?
No. The MPQ4420HGJ-AEC1-Z has a fixed 410kHz internal oscillator; frequency adjustment requires applying a 200kHz–2.2MHz external clock to the EN/SYNC pin. There is no resistor or capacitor programming option - frequency tuning is exclusively via synchronization for EMI control.
What is the maximum achievable output voltage with the internal 0.792V reference?
The maximum output voltage is 0.9 × VIN, limited by maximum duty cycle (95%). At 36V input, this yields up to 32.4V output. However, practical maximum is constrained by thermal limits and inductor saturation; for 2A loads, outputs above 15V require careful thermal design and low-ESR output capacitors.
Is the TSOT23-8 package thermally enhanced for automotive operation?
Yes. The TSOT23-8 package includes an exposed thermal pad (pin 4 GND) that must be soldered to a dedicated PCB copper pour with ≥4 thermal vias to inner ground planes. With proper layout, θJA is reduced from 100°C/W to ≤65°C/W, enabling full 2A operation at +105°C ambient.
MPQ4420HGJ-AEC1-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- 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):
- 4V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 32.4V
- Current - Output:
- 2A
- Frequency - Switching:
- 410kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-8
MPQ4420HGJ-AEC1-Z FAQ
1.How can I place an order for MPQ4420HGJ-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4420HGJ-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 MPQ4420HGJ-AEC1-Z reliable?
The price and inventory of MPQ4420HGJ-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 MPQ4420HGJ-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ4420HGJ-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4420HGJ-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4420HGJ-AEC1-Z?
MPQ4420HGJ-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4420HGJ-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 MPQ4420HGJ-AEC1-Z?
For technical support, including MPQ4420HGJ-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4420HGJ-AEC1-Z requirements.
6.How does Aetrix verify that MPQ4420HGJ-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ4420HGJ-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 MPQ4420HGJ-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ4420HGJ-AEC1-Z?
All MPQ4420HGJ-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4420HGJ-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 MPQ4420HGJ-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ4420HGJ-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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