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Monolithic Power Systems Inc. MPQ4425MGQBE-AEC1-P
- Part No.:
- MPQ4425MGQBE-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- LED Drivers
- Package:
- 13-PowerVQFN
- Datasheet:
-
MPQ4425MGQBE-AEC1-P.pdf
- Description:
- IC LED DRVR RGLTR PWM 1.5A 13QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,284
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Product details
Overview
MPQ4425MGQBE-AEC1-P from Monolithic Power Systems is a synchronous step-down white LED driver IC with integrated 85mΩ/50mΩ MOSFETs, delivering 1.5A continuous output current across 4V–36V input range, operating at 2.2MHz fixed frequency, and qualified to AEC-Q100 Grade-1 for automotive lighting systems.
For engineers reviewing the MPQ4425MGQBE-AEC1-P datasheet, MPQ4425MGQBE-AEC1-P pinout, MPQ4425MGQBE-AEC1-P application, or MPQ4425MGQBE-AEC1-P equivalent, key selection criteria include its wettable-flank QFN-13 package, PWM dimming support (100Hz–2kHz), fault-indicating open-drain /FAULT pin, and CISPR25 Class 5 EMI compliance for automotive front/rear lighting designs.
Technical Context
The MPQ4425MGQBE-AEC1-P uses peak-current-mode control with internal 0.2V reference and valley-current detection for over-current protection. It operates in forced continuous conduction mode (CCM) across full load range, ensuring stable 2.2MHz switching up to 1.5A output.
Its bootstrap circuit supports high-side gate drive via external BST capacitor and optional series resistor (20Ω recommended); frequency foldback reduces switching frequency to 1.1MHz above ~21V input or during short-circuit events to maintain regulation and thermal safety.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 36V - supports full automotive battery range including cold-crank (4.5V) and load-dump (36V) transients. |
| Output Current | 1.5A continuous - set via external RFB with 0.2V reference; enables driving 2–4 high-brightness LEDs in series. |
| Switching Frequency | 2.2MHz (typ.) - enables compact magnetics and EMI filtering; folds back to 1.1MHz under high-VIN or fault conditions. |
| Internal MOSFET RDS(on) | 85mΩ (HS) / 50mΩ (LS) - minimizes conduction loss and thermal rise at 1.5A, supporting >90% efficiency at 12VIN/24VLED. |
| Feedback Reference | 0.2V ±4% - precise current-sense threshold enabling accurate LED current regulation across -40°C to +125°C. |
| Protection Features | OCP (valley-current detection), thermal shutdown (170°C trip, 30°C hysteresis), LED open/short fault reporting via /FAULT pin. |
| EMI Compliance | CISPR25 Class 5 - verified radiated/conducted emissions performance with recommended EMI filter and PCB layout. |
Pinout & Package
MPQ4425MGQBE-AEC1-P is housed in a wettable-flank QFN-13 package (2.5mm × 3mm, 0.5mm pitch), optimized for automated optical inspection (AOI) and solder joint reliability in automotive production.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 IN | Power Input | High-current input node; requires low-ESR ceramic capacitor (4.7–10µF + 0.1µF) placed adjacent to pins for transient suppression. |
| 3 NC | No Connect | Unbonded pad; must remain floating - no trace or copper connection permitted. |
| 4 /FAULT | Fault Indicator | Open-drain output pulled low on LED open/short or thermal shutdown; requires external pull-up to VCC or bias rail. |
| 5 EN/DIM | Enable & PWM Dimming Input | Active-high enable; accepts 100Hz–2kHz PWM signal for analog-equivalent dimming - minimum amplitude 1.8V. |
| 6 FB | Current Sense Feedback | Connects to ground side of RFB; senses 0.2V reference to regulate LED current - trace must be short and shielded from noise. |
| 7 VCC | Bias Supply Output | Internally regulated 4.9V supply; decoupled with 0.1–0.22µF ceramic cap - capacitance >0.22µF risks instability. |
| 8 AGND | Analog Ground | Reference for FB, EN/DIM, and error amplifier; internally tied to PGND - no external connection needed. |
| 9 SW | Switch Node | High dv/dt node connecting HS/LS MOSFETs and inductor; requires wide copper pour and minimal loop area to reduce EMI. |
| 10 BST | Bootstrap Supply | Drives HS gate via external 0.1–1µF capacitor; 20Ω series resistor strongly recommended to damp SW ringing. |
| 11, 12, 13 PGND | Power Ground | High-current return path for HS/LS FETs and inductor; must connect to solid thermal pad and multiple vias to inner ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Wettable Flank QFN | Enables automated solder-joint inspection (AOI) for zero-defect automotive manufacturing - critical for AEC-Q100 Grade-1 compliance. |
| Forced CCM Operation | Maintains fixed 2.2MHz frequency from no-load to full 1.5A, eliminating audible noise and simplifying EMI filter design. |
| PWM Dimming Interface | Direct EN/DIM pin accepts 100Hz–2kHz PWM without external logic - duty cycle linearly controls average LED current. |
| Integrated Fault Reporting | /FAULT pin signals LED open, short, or thermal shutdown with <10µs delay - enables system-level diagnostics and fail-safe response. |
| CISPR25 Class 5 Ready | Meets stringent automotive radiated/conducted emissions limits with standard application circuit and layout - reduces qualification time. |
Applications
| Automotive Front Headlamp | Automotive Rear Combination Lamp |
|---|---|
|
Use Scenario: High-intensity discharge (HID) or LED-based adaptive front lighting system (AFS) requiring precise 1.5A current control and fast dimming response. IC Role / Device Role / Timing Role: Primary constant-current LED driver regulating series-connected white LEDs; provides PWM dimming interface for dynamic beam shaping. Use Value: Enables AEC-Q100-compliant, thermally robust operation at junction temperatures up to +125°C while maintaining <±5% current accuracy across temperature and input voltage. |
Use Scenario: Brake, tail, turn, and reverse light module in passenger vehicles where space constraints demand ultra-compact 2.5mm×3mm solution. IC Role / Device Role / Timing Role: Single-chip LED driver powering multiple LED strings with independent fault reporting per channel via shared /FAULT pin. Use Value: Reduces BOM count by integrating dual MOSFETs, bootstrap circuitry, and protection functions - eliminates need for external sense resistors or discrete drivers. |
| Commercial Vehicle Lighting | Off-Road Equipment Lighting |
|
Use Scenario: Heavy-duty truck cab and trailer lighting exposed to wide ambient (-40°C to +105°C) and harsh vibration environments. IC Role / Device Role / Timing Role: Robust LED current regulator with UVLO (3.5V rising) and thermal shutdown (170°C) to withstand cold-crank and engine-bay thermal stress. Use Value: Wettable flank package ensures solder-joint reliability under thermal cycling; QFN-13 footprint allows direct drop-in replacement in space-constrained PCBs. |
Use Scenario: Agricultural or construction machinery lighting requiring EMI resilience near high-noise motors and alternators. IC Role / Device Role / Timing Role: EMI-optimized LED driver meeting CISPR25 Class 5 without additional shielding - simplifies EMC certification for off-road OEMs. Use Value: Integrated EMI reduction techniques (frequency foldback, optimized gate drive) lower conducted/radiated emissions by >10dB vs. non-optimized buck LED drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4425MGQB-AEC1 | Same die and electrical specs, but standard QFN-13 (non-wettable flank) package - lacks AOI capability. | Suitable for non-automotive or lower-reliability industrial lighting where solder-joint inspection is not mandated. | Select when cost sensitivity outweighs AEC-Q100 process audit requirements or AOI is performed manually. |
| LT3966EFE#PBF | Higher 3.2A output, 2MHz switching, but larger TSSOP-20 package and no wettable flank; requires external MOSFETs. | Used in high-power LED arrays (e.g., stadium lighting) where board space is less constrained than automotive modules. | Choose only if >1.5A output or multi-string independent control is required - adds complexity and footprint penalty. |
Compared with MPQ4425MGQBE-AEC1-P, the MPQ4425MGQB-AEC1 sacrifices AOI compatibility for lower unit cost, while the LT3966EFE#PBF trades integration and package size for higher current capability - making the MPQ4425MGQBE-AEC1-P optimal for space- and reliability-constrained automotive LED modules.
Availability
MPQ4425MGQBE-AEC1-P is available at Aetrix Electronics and suitable for automotive front headlamps, rear combination lamps, and commercial vehicle lighting requiring stable component supply with AEC-Q100 Grade-1 assurance.
Supply support for MPQ4425MGQBE-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.
The MPQ4425M product line delivers AEC-Q100-qualified LED drivers for automotive exterior lighting, emphasizing compact footprint, EMI robustness, and thermal resilience in harsh environments.
FAQ
What is the maximum allowable input voltage for MPQ4425MGQBE-AEC1-P?
The absolute maximum input voltage is 40V, but the recommended operating range is 4V to 36V. Exceeding 36V may trigger frequency foldback or cause thermal stress; sustained operation above 36V violates AEC-Q100 stress limits and risks premature failure.
Can MPQ4425MGQBE-AEC1-P drive more than two series LEDs?
Yes - it supports up to four 3V white LEDs (12V total Vf) at 1.5A when input is ≥15V. The 36V max input and 0.2V feedback reference allow flexible string configuration, provided total forward voltage remains below VIN − (ILED × RDS(on)_LS).
Is an external bootstrap diode required for reliable operation?
No - the internal bootstrap circuit operates reliably with only a 0.1µF ceramic capacitor between BST and SW. An external diode (e.g., IN4148) is optional and beneficial only at duty cycles >65% to improve efficiency by reducing BST charge path losses.
How does the /FAULT pin behave during thermal shutdown?
During thermal shutdown (die temperature ≥170°C), the /FAULT pin is actively pulled low within 10µs and remains low until junction temperature falls below 140°C (30°C hysteresis). This provides deterministic fault signaling for microcontroller monitoring without external logic.
What is the minimum PWM dimming frequency supported?
The minimum supported PWM dimming frequency is 100Hz, as specified in the datasheet. Frequencies below 100Hz may cause visible flicker or inconsistent current regulation due to interaction with the 2.2MHz internal oscillator and soft-start timing.
Does MPQ4425MGQBE-AEC1-P require external compensation components?
No - the error amplifier features an optimized internal compensation network. Only the external RFB (for current setting) and optional RT (for bandwidth tuning) are needed; no external capacitor or RC network is required for stable operation.
How is UVLO threshold adjusted for systems requiring higher turn-on voltage?
A resistor divider between IN and EN/DIM pins raises the effective UVLO threshold. With VEN_RISING = 1.45V, selecting RUP = 1.2MΩ and RDOWN = 500kΩ sets turn-on at ~6.5V, while limiting EN current to <100µA per datasheet guidance.
MPQ4425MGQBE-AEC1-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 13-PowerVQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Step-Down (Buck)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 4V
- Voltage - Supply (Max):
- 36V
- Voltage - Output:
- -
- Current - Output / Channel:
- 1.5A
- Frequency:
- 2.2MHz
- Dimming:
- PWM
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 13-QFN (2.5x3)
MPQ4425MGQBE-AEC1-P FAQ
1.How can I place an order for MPQ4425MGQBE-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ4425MGQBE-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 MPQ4425MGQBE-AEC1-P reliable?
The price and inventory of MPQ4425MGQBE-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 MPQ4425MGQBE-AEC1-P is usually 5 days.
3.What payment methods are accepted for MPQ4425MGQBE-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ4425MGQBE-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ4425MGQBE-AEC1-P?
MPQ4425MGQBE-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ4425MGQBE-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 MPQ4425MGQBE-AEC1-P?
For technical support, including MPQ4425MGQBE-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ4425MGQBE-AEC1-P requirements.
6.How does Aetrix verify that MPQ4425MGQBE-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPQ4425MGQBE-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 MPQ4425MGQBE-AEC1-P meets industry standards.
7.What is the process for return or replacement of MPQ4425MGQBE-AEC1-P?
All MPQ4425MGQBE-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ4425MGQBE-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 MPQ4425MGQBE-AEC1-P part is unused and in its original packaging.
Return procedure for MPQ4425MGQBE-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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