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Monolithic Power Systems Inc. MPQ7228GQJE-0000-AEC1-P
- Part No.:
- MPQ7228GQJE-0000-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- LED Drivers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MPQ7228GQJE-0000-AEC1-P.pdf
- Description:
- 16-CHANNEL, CURRENT SINK LED DRI
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
MPQ7228GQJE-0000-AEC1-P from Monolithic Power Systems is a 16-channel AEC-Q100 Grade 1 current sink LED driver optimized for automotive dynamic lighting. It delivers up to 200mA per channel with 12-bit PWM + 6-bit analog dimming, adaptive feedback control (AFC) for 300mV headroom at full load, UART interface (2Mbps), and integrated fault protection including LED open/short, ISET pin fault, and thermal shutdown. It targets rear lighting modules requiring functional safety support.
For engineers reviewing the MPQ7228GQJE-0000-AEC1-P datasheet, MPQ7228GQJE-0000-AEC1-P pinout, MPQ7228GQJE-0000-AEC1-P application in adaptive headlights or DRLs, or MPQ7228GQJE-0000-AEC1-P equivalent for AEC-Q100 LED driver replacement, this page provides verified technical context, validated pin functions, real-world application mappings, and confirmed alternatives aligned with automotive EMC (CISPR25 Class 5) and thermal requirements.
Technical Context
The MPQ7228 implements a master/slave cascading architecture using MODE, ADDR1, and ADDR2 pins to support up to 256 channels across 16 ICs. Its AFC loop dynamically adjusts the pre-regulator output voltage by monitoring FBO/FBI signals to maintain minimal headroom-300mV at 200mA-reducing power loss and thermal stress.
It integrates UART-based host communication (2Mbps, RX/TX pins), failsafe diagnostics (/FS pin with latch behavior), and configurable EMI mitigation: frequency spread spectrum (FSS), programmable phase shift (16–24μs), and slew-rate-controlled PWM edges (2–32μs). All protections-including thermal warning (135°C), shutdown (155°C), and LED string fault detection-are hardware-latched and register-mapped.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 16 independent current sinks, each configurable for 200mA max output with ±5% channel-to-channel matching. |
| Dimming Resolution | 12-bit PWM + 6-bit analog per channel enables fine-grained brightness control and flicker-free transitions in animated lighting. |
| AFC Headroom | 300mV typical at 200mA ensures minimal voltage drop across current sinks, directly lowering power dissipation and junction temperature. |
| UART Speed | 2Mbps interface supports real-time reconfiguration of all 16 channels without interrupting PWM operation. |
| Operating Temp | -40°C to +150°C junction range meets AEC-Q100 Grade 1 requirements for under-hood and exterior automotive placement. |
| EMC Compliance | CISPR25 Class 5 certified for conducted/radiated emissions (150kHz–1GHz) with integrated FSS and slew-rate control. |
| Fault Protection | Hardware-latched LED open/short, ISET pin fault, thermal warning (135°C), and shutdown (155°C) with /FS pin assertion. |
Pinout & Package
MPQ7228GQJE-0000-AEC1-P is housed in a wettable-flank QFN-32 (5mm × 6mm) package with exposed thermal pad connected to PCB ground for optimal thermal performance (θJC = 0.93°C/W on EVB).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VBIAS (Pin 31) | Bias supply input | 2.5V–18V primary input rail; powers internal circuitry and enables cold-crank operation down to 2.5V. |
| ISET (Pin 24) | Current reference input | Resistor-to-ground sets average LED current: ILED = 600 / RISET (kΩ); open/short detection triggers /FS latch. |
| FBO (Pin 23) | AFC feedback output | Drives pre-regulator feedback node to minimize headroom; floats when AFC disabled. |
| FBI (Pin 2) | AFC feedback input | Receives headroom data from upstream device in cascade; tied to GND if unused. |
| /FS (Pin 29) | Failsafe indicator | Active-low open-drain output asserting on LED fault, thermal event, or ISET error; supports system-level diagnostics. |
| RX/TX (Pins 26/25) | UART interface | 2Mbps full-duplex serial link to host MCU; TX pulled up to VCC via 2kΩ resistor. |
| ADDR1/ADDR2 (Pins 28/27) | Device address config | Resistor- or rail-tied pins enabling unique UART addresses for multi-IC daisy chains (up to 16 devices). |
| MODE (Pin 32) | Master/slave mode select | Tied to GND for master (controls AFC), VCC for slave (follows master's FBO); required for cascaded AFC operation. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Feedback Control (AFC) | Dynamically regulates pre-regulator output to maintain 300mV headroom at 200mA, reducing power loss by >35% vs fixed-headroom designs. |
| Cascadable Architecture | Supports up to 256 channels via UART-addressed daisy chain; eliminates need for multiple isolated communication buses. |
| Functional Safety Support | ASIL-ready documentation, /FS pin with latch behavior, and fault registers enable ISO 26262-compliant system diagnostics. |
| EMI-Optimized Dimming | Configurable phase shift (16–24μs) and slew rate (2–32μs) suppress harmonic peaks, meeting CISPR25 Class 5 without external filters. |
| Wettable Flank Packaging | QFN-32 with solderable side walls enables automated optical inspection (AOI) and improves solder joint reliability in automotive reflow profiles. |
Applications
| Dynamic Tail Lights | Adaptive Matrix Headlights |
|---|---|
|
Use Scenario: Sequential turn indication and brake light animation with variable intensity patterns. IC Role / Device Role / Timing Role: 16-channel current sink driving individual LED segments; UART enables frame-by-frame brightness/phase updates at 250Hz PWM. Use Value: Enables smooth, low-jitter animations with synchronized channel phasing-critical for regulatory-compliant signaling and brand differentiation. |
Use Scenario: Pixel-level beam shaping using high-density LED arrays with localized dimming zones. IC Role / Device Role / Timing Role: Current sink per LED string; AFC minimizes thermal rise during sustained high-brightness operation; /FS reports pixel faults. Use Value: Sustains 200mA per channel with 300mV headroom, reducing heatsink size by 40% vs legacy drivers while supporting ASIL-B diagnostics. |
| Daytime Running Lights (DRLs) | Turn Signals & Puddle Lights |
|
Use Scenario: Always-on, thermally stable illumination with ambient-light-adjusted brightness and fail-safe monitoring. IC Role / Device Role / Timing Role: Constant-current driver with thermal warning (135°C) and shutdown (155°C); OTP stores calibrated dimming curves. Use Value: Eliminates thermal derating-maintains full 200mA output from -40°C to +125°C ambient-enabling compact, fanless DRL modules. |
Use Scenario: Low-power accent lighting with rapid on/off transitions and short-circuit resilience in door-mounted assemblies. IC Role / Device Role / Timing Role: Fault-tolerant current sink; LED short/open detection latches /FS within 4ms; supports 2.5V cold-crank start. Use Value: Guarantees fail-safe operation during vehicle startup transients and prevents single-point failure propagation across lighting zones. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-channel automotive LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20052ATP/V+T | 16-channel, 150mA max/channel; no AFC; SPI interface only; requires external pre-regulator control. | Lacks headroom optimization and UART-requires additional MCU GPIOs and firmware overhead for cascading. | Select when cost sensitivity outweighs thermal efficiency needs and system already uses SPI infrastructure. |
| TLC6C5912QPWRQ1 | 12-channel, 120mA max/channel; no AFC; open-drain outputs; no integrated fault registers or /FS pin. | Requires external fault monitoring circuitry; limited channel count necessitates multiple ICs for 256-channel systems. | Choose for simpler, lower-channel-count interior lighting where diagnostic depth is secondary to BOM count. |
Compared with MAX20052ATP/V+T and TLC6C5912QPWRQ1, MPQ7228GQJE-0000-AEC1-P uniquely combines AFC-driven thermal efficiency, UART scalability, and hardware-latched diagnostics-enabling single-IC solutions for high-channel-count, ASIL-aware exterior lighting without compromising EMC or cold-crank robustness.
Availability
MPQ7228GQJE-0000-AEC1-P is available at Aetrix Electronics and suitable for automotive rear lighting modules, adaptive headlight systems, and daytime running lights requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle assurance.
Supply support for MPQ7228GQJE-0000-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 power management ICs for automotive, industrial, and cloud computing applications.
The MPQ7228 belongs to MPS's AEC-Q100-qualified LED driver product line, engineered specifically for functional-safety-critical automotive lighting systems demanding high channel density, thermal efficiency, and robust diagnostics.
FAQ
What is the maximum number of MPQ7228 ICs that can be cascaded?
Up to 16 MPQ7228 ICs can be cascaded via UART daisy chain using ADDR1/ADDR2 pin configuration, enabling a total of 256 independently controlled LED channels. Each device requires a unique 2-bit address set by resistor or rail ties, and MODE pin must be configured as master (GND) or slave (VCC) to coordinate AFC feedback.
How does Adaptive Feedback Control (AFC) reduce thermal stress?
AFC reduces thermal stress by dynamically adjusting the pre-regulator output voltage to maintain only 300mV headroom across all 16 current sinks at 200mA. This cuts power dissipation in the MPQ7228 by up to 38% compared to fixed-headroom drivers, lowering junction temperature and extending lifetime in sealed automotive enclosures.
Does MPQ7228GQJE-0000-AEC1-P support functional safety certification?
Yes-MPS provides functional safety documentation (FMEDA, safety manual) to support system-level ASIL-B compliance. The /FS pin, fault registers, thermal warning/shutdown thresholds, and latch-on-fault behavior are designed to meet ISO 26262 requirements for automotive lighting diagnostics and fail-safe response.
What is the role of the FBI and FBO pins in a multi-IC setup?
In cascaded configurations, FBO (Pin 23) of a master device drives the FBI (Pin 2) of the next slave device to share real-time headroom information. This allows coordinated AFC across all ICs, ensuring uniform 300mV headroom and minimizing inter-device thermal imbalance-even with varying LED forward voltages across PCBs.
Can the MPQ7228 drive LEDs directly from a 12V battery without an external pre-regulator?
No-it requires an external buck pre-regulator whose feedback node connects to FBO. The MPQ7228 itself does not regulate input voltage; it sinks current from the pre-regulator's output. VBIAS (2.5V–18V) supplies bias power only-the current path flows from pre-regulator → LED anode → MPQ7228 LEDx pin → GND.
What protection features are hardware-latched versus auto-recovering?
LED open/short, ISET pin open/short, and thermal shutdown events trigger hardware-latched /FS assertion and corresponding fault register bits. Recovery requires host MCU command or power-cycle. Thermal warning (135°C) is auto-clearing once temperature drops below hysteresis threshold (115°C).
Is the OTP memory field-programmable after soldering?
No-the OTP (one-time programmable) memory is programmed at factory with default configuration code "0000". Custom OTP codes require contact with an MPS FAE prior to order placement; reprogramming in-system is not supported.
MPQ7228GQJE-0000-AEC1-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- Constant Current
- Internal Switch(s):
- Yes
- Number of Outputs:
- 16
- Voltage - Supply (Min):
- 2.5V
- Voltage - Supply (Max):
- 18V
- Voltage - Output:
- -
- Current - Output / Channel:
- 200mA
- Frequency:
- -
- Dimming:
- Analog, PWM
- Applications:
- General Purpose
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 32-QFN (5x6)
MPQ7228GQJE-0000-AEC1-P FAQ
1.How can I place an order for MPQ7228GQJE-0000-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ7228GQJE-0000-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 MPQ7228GQJE-0000-AEC1-P reliable?
The price and inventory of MPQ7228GQJE-0000-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 MPQ7228GQJE-0000-AEC1-P is usually 5 days.
3.What payment methods are accepted for MPQ7228GQJE-0000-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ7228GQJE-0000-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ7228GQJE-0000-AEC1-P?
MPQ7228GQJE-0000-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ7228GQJE-0000-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 MPQ7228GQJE-0000-AEC1-P?
For technical support, including MPQ7228GQJE-0000-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ7228GQJE-0000-AEC1-P requirements.
6.How does Aetrix verify that MPQ7228GQJE-0000-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPQ7228GQJE-0000-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 MPQ7228GQJE-0000-AEC1-P meets industry standards.
7.What is the process for return or replacement of MPQ7228GQJE-0000-AEC1-P?
All MPQ7228GQJE-0000-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ7228GQJE-0000-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 MPQ7228GQJE-0000-AEC1-P part is unused and in its original packaging.
Return procedure for MPQ7228GQJE-0000-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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