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Monolithic Power Systems Inc. MPQ7228GQJE-0000-AEC1-Z
- Part No.:
- MPQ7228GQJE-0000-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- LED Drivers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MPQ7228GQJE-0000-AEC1-Z.pdf
- Description:
- 16-CHANNEL, CURRENT SINK LED DRI
- Quantity:
- Payment:
- Shipping:
Inventory:3,625
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Product details
Overview
MPQ7228GQJE-0000-AEC1-Z from Monolithic Power Systems is a 16-channel AEC-Q100 Grade 1 current sink LED driver for automotive lighting, featuring adaptive feedback control (AFC), 12-bit PWM + 6-bit analog dimming per channel, UART interface up to 2 Mbps, and integrated fault diagnostics including LED open/short, ISET pin fault, and thermal shutdown. It delivers up to 200 mA per channel with 300 mV headroom at full load and supports cascading up to 256 channels.
For engineers reviewing the MPQ7228GQJE-0000-AEC1-Z datasheet, MPQ7228GQJE-0000-AEC1-Z pinout, MPQ7228GQJE-0000-AEC1-Z application, or MPQ7228GQJE-0000-AEC1-Z equivalent, key selection criteria include AFC-enabled pre-regulator voltage optimization, CISPR25 Class 5 EMC compliance, functional safety support (ASIL-ready documentation), and QFN-32 wettable flank packaging for automotive-grade reflow inspection.
Technical Context
The MPQ7228 operates as a digitally controlled current sink array with master/slave mode configuration via MODE pin, enabling synchronized multi-IC operation in dynamic lighting systems. Its UART interface implements register-level access to all 16 channels' dimming, phase shift, slew rate, and protection thresholds - with OTP memory storing default configuration code "0000".
AFC dynamically adjusts the external buck pre-regulator's output voltage by monitoring FBO/FBI signals across cascaded devices, maintaining minimal LED channel headroom (e.g., 300 mV @ 200 mA) to reduce power loss and thermal stress. Frequency spread spectrum (FSS) and configurable PWM phase shift further suppress EMI without external filtering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 16 independent current sinks, each programmable up to 200 mA; supports daisy-chain of up to 16 ICs for 256-channel systems. |
| Dimming Resolution | 12-bit PWM + 6-bit analog per channel - enables fine-grained brightness control and flicker-free transitions in animated lighting. |
| Interface Speed | UART up to 2 Mbps - ensures low-latency host MCU communication for real-time lighting pattern updates. |
| AFC Headroom | 300 mV typical at 200 mA - minimizes power dissipation in current sinks and improves system efficiency under varying LED forward voltage. |
| EMC Compliance | CISPR25 Class 5 certified - meets stringent automotive radiated/conducted emissions limits without requiring additional EMI filters in typical layout. |
| Operating Temp | −40°C to +150°C junction temperature - qualified for under-hood and exterior lighting environments per AEC-Q100 Grade 1. |
| Fault Diagnostics | Dedicated /FS pin + internal registers for LED open/short, ISET fault, thermal warning/shutdown - enables ASIL-B–capable system-level safety monitoring. |
Pinout & Package
MPQ7228GQJE-0000-AEC1-Z is housed in a QFN-32 (5 mm × 6 mm) package with wettable flanks for automated optical inspection (AOI) in automotive PCB assembly. The exposed thermal pad is electrically isolated but must be connected to PCB ground plane for optimal thermal performance (θJC = 0.93°C/W on EVB).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VBIAS (31) | Bias supply input | 2.5 V to 18 V primary input rail; powers internal regulators and enables cold-crank operation down to 2.5 V. |
| LED1–LED16 (4–9,11–21) | Current sink outputs | Sink cathodes of up to 16 LED strings; each channel independently controllable via register or PWM. |
| FBO (23) / FBI (2) | AFC feedback interface | FBO outputs headroom signal to pre-regulator; FBI receives headroom from upstream device in cascade - enables real-time VOUT optimization. |
| ISET (24) | Current reference input | External resistor sets full-scale current: ILED = 600 mA·kΩ / RISET; open/short detection latches /FS. |
| RX/TX (26/25) | UART data interface | 2 Mbps asynchronous serial link; TX requires 2 kΩ pull-up to VCC; RX thresholds defined at 0.7 V / 2.0 V for noise immunity. |
| /FS (29) | Failsafe indicator | Active-low open-drain output asserting on LED fault, thermal event, or ISET anomaly - directly interfaces with MCU GPIO or safety controller. |
| ADDR1/ADDR2 (27/28) | Device address config | Resistor-programmable address pins enable unique UART addressing for up to 4 devices on same bus without software enumeration. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Feedback Control (AFC) | Reduces average power loss by dynamically lowering pre-regulator output voltage to maintain only required headroom (e.g., 300 mV @ 200 mA). |
| Configurable Phase Shift & Slew Rate | Programmable inter-channel delay (up to 24 µs) and PWM edge slew (2–32 µs) suppress peak current harmonics and improve EMI margin. |
| Functional Safety Support | ASIL-ready documentation package, failsafe /FS pin, and fault registers enable integration into ISO 26262-compliant lighting control systems. |
| Wettable Flank QFN | Facilitates automated X-ray and AOI inspection of solder joints - critical for zero-defect automotive manufacturing requirements. |
| OTP Configuration Storage | One-time programmable memory retains default register settings (e.g., "0000" configuration code), eliminating boot-time initialization overhead. |
Applications
| Dynamic/Animated Tail Lights | Adaptive Matrix Headlights |
|---|---|
|
Use Scenario: Sequential turn indication, brake light pulsing, and hazard animation in rear lighting modules. IC Role / Device Role / Timing Role: 16-channel current sink driving individual LED segments with synchronized PWM and phase-shifted dimming. Use Value: Enables smooth, high-fidelity lighting effects with <1 µs inter-channel timing control and flicker-free 250 Hz–1 kHz PWM. |
Use Scenario: Pixel-level beam shaping and glare-free high-beam modulation in front-end ADAS-integrated headlights. IC Role / Device Role / Timing Role: Precision current regulation for localized LED zones, coordinated via UART from central lighting controller. Use Value: Delivers <±5% channel-to-channel current matching and real-time AFC headroom adjustment to maintain consistent lumen output across temperature. |
| Daytime Running Lights (DRLs) | Turn Signals and Puddle Lights |
|
Use Scenario: High-reliability, always-on white LED illumination meeting photometric intensity and thermal stability requirements. IC Role / Device Role / Timing Role: Constant-current driver with thermal derating and open/short LED fault detection for fail-safe operation. Use Value: Supports continuous 200 mA/channel operation at TJ = +150°C with built-in thermal warning (135°C) and shutdown (170°C) thresholds. |
Use Scenario: Low-power accent lighting activated during door opening or vehicle approach, requiring rapid on/off response and compact layout. IC Role / Device Role / Timing Role: Fast-enable current sink with EN pin control and sub-20 µs PWM rise time for crisp visual signaling. Use Value: Achieves <10 µs LED current ramping and <4 ms open/short fault detection - critical for responsive user interface lighting. |
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, 150 mA max per channel; no AFC; uses SPI instead of UART; lacks OTP and wettable flanks. | Targeted at cost-sensitive DRLs without dynamic animation or cascading needs. | Select when lower channel current and simpler interface suffice; avoid if AFC efficiency or AEC-Q100 Grade 1 thermal range is required. |
| TLC6C5912QPWRQ1 | 16-channel, 120 mA max; no AFC; open-drain outputs (not current sinks); no integrated fault registers or /FS pin. | Suitable for basic on/off LED control where analog dimming and diagnostics are not needed. | Choose only for non-safety-critical interior lighting; cannot replace MPQ7228 in ASIL-B–level systems or high-efficiency exterior lighting. |
Compared with MAX20052ATP/V+T and TLC6C5912QPWRQ1, MPQ7228GQJE-0000-AEC1-Z uniquely combines AFC-driven efficiency, UART-based scalability, and ASIL-ready diagnostics - making it the only option qualified for dynamic, thermally constrained, and safety-certified automotive lighting.
Availability
MPQ7228GQJE-0000-AEC1-Z is available at Aetrix Electronics and suitable for automotive rear lighting modules, adaptive front lighting systems, and daytime running lights requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for MPQ7228GQJE-0000-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 power management ICs for automotive, industrial, and consumer applications, with design centers in the US, China, and Taiwan.
The MPQ7228 belongs to MPS's automotive LED driver product line, engineered specifically for functional safety–enabled, thermally robust, and EMC-compliant exterior lighting systems - emphasizing efficiency, diagnostics, and manufacturability in harsh environments.
FAQ
What is the purpose of the FBI and FBO pins?
The FBO (Feedback Output) pin transmits headroom information to an external buck pre-regulator's feedback node, while the FBI (Feedback Input) pin receives headroom data from upstream MPQ7228 devices in a cascade. Together, they enable Adaptive Feedback Control (AFC) to minimize voltage overhead across all current sinks - reducing power loss and heat generation in multi-IC configurations.
How does the /FS (failsafe) pin behave during fault conditions?
The /FS pin is an active-low, open-drain output that pulls low upon detection of LED open/short, ISET pin fault, or thermal warning/shutdown. It remains asserted until the fault condition clears and the device is reset via EN pin toggle or power cycle. Internal fault registers retain status for host MCU readback via UART.
Can MPQ7228GQJE-0000-AEC1-Z operate without an external pre-regulator?
No - the MPQ7228 is a current sink driver only and requires an external buck (or other) pre-regulator to supply VBIAS. Its AFC function dynamically controls that pre-regulator's output voltage via FBO/FBI, but it does not generate power itself. VBIAS must be supplied within 2.5 V–18 V.
What is the significance of the "0000" in the part number?
The "0000" denotes the default OTP (one-time programmable) configuration code stored in the device, defining initial register values such as default dimming levels, phase shifts, and protection thresholds. Custom OTP codes can be programmed by MPS FAEs for application-specific startup behavior.
Does MPQ7228 support daisy-chaining without additional level-shifting circuitry?
Yes - the MPQ7228 supports native UART daisy-chaining using its RX/TX pins in half-duplex mode. Each device's TX connects to the next device's RX, with termination resistors at endpoints. No level shifters are needed since all logic operates at VCC (3.3 V nominal) and tolerates VBIAS-supplied voltage domains.
How is thermal performance validated for AEC-Q100 Grade 1 compliance?
Thermal validation includes junction temperature testing from −40°C to +150°C under maximum load (200 mA × 16 channels), with thermal shutdown triggered at 170°C ±15°C and hysteresis of 20°C. θJA = 21.2°C/W and θJC = 0.93°C/W were measured on a 4-layer 83.5 mm × 83.5 mm evaluation board per JESD51-7.
Is the UART interface compatible with standard automotive microcontrollers?
Yes - the UART interface complies with RS-232–level logic thresholds (VRXTH− = 0.7 V, VRXTH+ = 2.0 V at VCC = 3.3 V) and supports baud rates up to 2 Mbps. It interfaces directly with common automotive MCUs (e.g., NXP S32K, Infineon AURIX) without transceivers, provided VCC is properly decoupled and pull-ups applied.
MPQ7228GQJE-0000-AEC1-Z 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-Z FAQ
1.How can I place an order for MPQ7228GQJE-0000-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ7228GQJE-0000-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 MPQ7228GQJE-0000-AEC1-Z reliable?
The price and inventory of MPQ7228GQJE-0000-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 MPQ7228GQJE-0000-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ7228GQJE-0000-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ7228GQJE-0000-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ7228GQJE-0000-AEC1-Z?
MPQ7228GQJE-0000-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ7228GQJE-0000-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 MPQ7228GQJE-0000-AEC1-Z?
For technical support, including MPQ7228GQJE-0000-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ7228GQJE-0000-AEC1-Z requirements.
6.How does Aetrix verify that MPQ7228GQJE-0000-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ7228GQJE-0000-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 MPQ7228GQJE-0000-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ7228GQJE-0000-AEC1-Z?
All MPQ7228GQJE-0000-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ7228GQJE-0000-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 MPQ7228GQJE-0000-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ7228GQJE-0000-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPQ7228GQJE-0000-AEC1-Z Tags
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