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Monolithic Power Systems Inc. MPQ3326AGRE-AEC1-P
- Part No.:
- MPQ3326AGRE-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- LED Drivers
- Package:
- 24-VFQFN
- Datasheet:
-
MPQ3326AGRE-AEC1-P.pdf
- Description:
- 16-CHANNEL, 80MA/CH, LED DRIVER
- Quantity:
- Payment:
- Shipping:
Inventory:463
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Product details
Overview
MPQ3326AGRE-AEC1-P from Monolithic Power Systems is a 16-channel AEC-Q100 Grade 1 LED driver IC for automotive lighting and instrument clusters, delivering up to 80mA per channel with independent 12-bit PWM and 6-bit analog dimming, I²C-configurable addresses (10 options), and integrated LED open/short/thermal protection. It operates from 4.5V–16V input and supports synchronized refresh signaling for LCD backlight timing.
For engineers reviewing the MPQ3326AGRE-AEC1-P datasheet, MPQ3326AGRE-AEC1-P pinout, MPQ3326AGRE-AEC1-P application, or MPQ3326AGRE-AEC1-P equivalent, this page delivers verified electrical parameters, QFN-24 wettable flank package details, fault-handling behavior, dimming resolution trade-offs, and automotive-grade thermal performance metrics required for functional safety-compliant display subsystem design.
Technical Context
The MPQ3326AGRE-AEC1-P integrates sixteen matched current sinks with programmable headroom (200–400mV at 50–80mA), enabling precise per-channel LED current regulation without external FETs. Its dual-dimming architecture decouples amplitude control (6-bit analog) from duty-cycle control (12-bit PWM), allowing simultaneous fine-grained brightness and flicker-free modulation.
It implements configurable phase-shifted PWM edges (40μs inter-channel delay), slew-rate-controlled current transitions (5/10/20μs options), and a dedicated RFSH/FLT pin that toggles between synchronized refresh output (fREFRESH = 127.5kHz / FRFSH × fPWM) and active-low fault indication-enabling real-time diagnostics without interrupting display timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 16V - Supports direct connection to automotive battery rails (9–16V nominal) with UVLO hysteresis (3.3V–4.2V). |
| Max Output Current/Ch | 80mA - Configured via external ISET resistor (e.g., 15kΩ yields 80mA ±5%); enables high-brightness RGB or white LED strings. |
| PWM Dimming Resolution | 12-bit (4096 steps) - Enables smooth, low-frequency (<1Hz) brightness ramping without visible stepping in instrument clusters. |
| Analog Dimming Resolution | 6-bit (64 steps) - Provides coarse current scaling for power optimization while preserving PWM timing integrity. |
| PWM Frequency Options | 220/250/280/330Hz - Selectable via FPWM[1:0]; 250Hz default avoids audible noise and matches common LCD refresh harmonics. |
| Thermal Shutdown Threshold | 170°C with 20°C hysteresis - Ensures fail-safe shutdown during sustained overloads; recovery occurs only after die cools to ~150°C. |
| I²C Address Options | 10 unique addresses (0x30–0x39) - Set by RADDR/RISET ratio; allows daisy-chaining up to 10 ICs on one bus for large-area displays. |
Pinout & Package
MPQ3326AGRE-AEC1-P uses a wettable flank QFN-24 (4mm × 4mm) package optimized for automated optical inspection (AOI) and solder joint reliability in automotive PCB assemblies.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 RFSH/FLT | Refresh signal output / Fault flag | Open-drain output: drives low on any fault (LED open/short, OTP); outputs configurable rectangular refresh signal when FLTEN=0. |
| 2 EN | Global enable input | Active-high logic: must exceed 2.1V to activate device; internal 1MΩ pull-down ensures safe default-off state. |
| 3 SCL / 4 SDA | I²C interface clock/data | Standard-mode (10–1000kHz) compliant; supports multi-master arbitration and 10 address configurations via ADDR pin. |
| 5 ADDR | I²C address LSB selector | Voltage divider with RADDR sets 4-bit address bits; 10 discrete ratios yield addresses 0x30–0x39. |
| 6 ISET | Current reference input | Connects to GND via precision resistor (e.g., 15kΩ → 80mA); internal 1.2V reference ensures stable ILED across temperature. |
| 7–23 LED1–LED16 | Current sink outputs | Each pin sinks up to 80mA; connects directly to LED cathodes; 200–400mV headroom enables operation with short LED strings. |
| 14 GND / 24 VIN | Power return / Input supply | VIN requires local 10μF ceramic capacitor; GND pad under package provides low-inductance thermal path and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Separated PWM + analog dimming | Independent 12-bit PWM duty and 6-bit current scaling per channel-eliminates brightness/flicker coupling in dynamic UIs. |
| Configurable LED protection thresholds | Adjustable short-circuit detection (2V/3V/4V/5V via STH[1:0]) and open-circuit threshold (100mV) with 4ms debounce. |
| EMI-reduction controls | Selectable ILED slew rate (5/10/20μs) and 40μs inter-channel PWM phase shift suppress peak current harmonics. |
| Refresh signal generation | fREFRESH = 127.5kHz / (FRFSH × fPWM) - Generates precise, software-synchronized LCD backlight strobes without MCU intervention. |
| AEC-Q100 Grade 1 qualification | Rated for −40°C to +125°C junction temperature; includes latch/hiccup fault recovery modes and production-tested ESD robustness (HBM Class 1C). |
Applications
| Automotive Instrument Clusters | Automotive Center Stack Displays |
|---|---|
|
Use Scenario: Driving digital speedometers, tachometers, and warning indicators with variable brightness across daylight/night conditions. IC Role / Device Role / Timing Role: LED current sink array providing independent dimming per gauge segment; RFSH/FLT synchronizes backlight strobes with display controller frame rate. Use Value: 12-bit PWM eliminates visible stepping during slow brightness ramps; AEC-Q100 qualification ensures reliability over 15-year vehicle lifetime. |
Use Scenario: Backlighting high-resolution infotainment touchscreens with localized dimming zones for contrast enhancement. IC Role / Device Role / Timing Role: 16-channel current source driving segmented LED arrays behind LCD layers; I²C enables dynamic zone mapping via MCU firmware. Use Value: 10 configurable I²C addresses allow cascading multiple MPQ3326A ICs for >16-zone control without bus contention. |
| Automotive Exterior Lighting | Industrial HMI Panels |
|
Use Scenario: Controlling sequential turn signals and adaptive daytime running lights (DRL) requiring precise current matching. IC Role / Device Role / Timing Role: High-accuracy current sink (±5% at 80mA) with channel enable/disable via I²C registers for pattern sequencing. Use Value: LED open/short protection with hiccup mode prevents single-fault propagation across lighting zones during field operation. |
Use Scenario: Backlighting ruggedized operator interfaces in factory automation equipment exposed to vibration and wide temperature swings. IC Role / Device Role / Timing Role: Automotive-grade LED driver operating from 12V DC industrial supplies; wettable flank QFN ensures solder joint integrity under thermal cycling. Use Value: Over-temperature protection (170°C trigger) and −40°C startup capability meet EN 61000-6-2 industrial EMC requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-channel LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS31FL3729-QFLS4-TR | 18-channel, 40mA max/ch, no analog dimming, SPI interface only | Lacks separated dimming modes and automotive qualification; suited for consumer panels only | Choose when cost-sensitive non-automotive designs require higher channel count but lower current per channel. |
| TPS61196RGER | 16-channel, 60mA max/ch, I²C, no refresh output, no phase shift | No RFSH/FLT sync signal or EMI-reduction features; not AEC-Q100 qualified | Prefer for simpler interior lighting where LCD synchronization and automotive compliance are unnecessary. |
Compared with IS31FL3729-QFLS4-TR and TPS61196RGER, MPQ3326AGRE-AEC1-P uniquely combines AEC-Q100 Grade 1 rating, dual-dimming independence, hardware-generated refresh signaling, and configurable EMI suppression-making it the only option qualified for safety-critical automotive display backlighting.
Availability
MPQ3326AGRE-AEC1-P is available at Aetrix Electronics and suitable for automotive instrument clusters, center stack displays, and exterior lighting systems requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant traceability.
Supply support for MPQ3326AGRE-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, with core expertise in DC/DC converters, LED drivers, and motor drivers for automotive, industrial, and computing markets.
The MPQ3326A product line targets automotive display subsystems requiring high-current accuracy, functional safety features, and synchronized timing-designed specifically to replace discrete LED driver solutions in instrument clusters and infotainment systems.
FAQ
What is the maximum number of MPQ3326AGRE-AEC1-P ICs that can be cascaded on a single I²C bus?
Up to 10 MPQ3326AGRE-AEC1-P devices can share one I²C bus using unique addresses (0x30–0x39) set by the ADDR pin's resistor ratio. Each device requires its own RADDR resistor tied to GND, and all SCL/SDA lines must be pulled up externally with ≤2.2kΩ resistors to ensure signal integrity across the bus length.
How does the RFSH/FLT pin function during normal operation versus fault conditions?
When FLTEN = 0, RFSH/FLT outputs a configurable rectangular refresh signal synchronized to fPWM. When FLTEN = 1, it becomes an active-low fault flag: pulled low on LED open/short or over-temperature events, with corresponding fault bits (CHxO/CHxS/FT_OTP) set in registers 06h–09h and 02h.
Can analog and PWM dimming be used simultaneously on the same channel?
Yes-each channel supports concurrent 6-bit analog dimming (ICHx register) and 12-bit PWM dimming (PWMx register). Analog dimming scales the peak ILED amplitude, while PWM dimming modulates its duty cycle; both operate independently to achieve granular brightness control without interaction.
What is the minimum LED string voltage required for reliable operation at 80mA per channel?
At 80mA, the MPQ3326AGRE-AEC1-P requires ≥350mV headroom (VLEDx) across each LED string, as specified in the Electrical Characteristics table. This means the forward voltage of the LED string must be ≤(VIN – 0.35V); for VIN = 4.5V, maximum usable Vf is 4.15V per string.
Does the device support hiccup-mode or latch-off fault recovery, and how is it configured?
Fault recovery mode is selected via the LATCH bit (bit 6) in register 01h: LATCH = 0 enables hiccup mode (32μs retry every 1ms), while LATCH = 1 enables latch-off mode (channel remains disabled until VIN or EN reset). Both modes assert RFSH/FLT low and set corresponding fault registers.
Is the wettable flank QFN-24 package compatible with standard reflow profiles and AOI inspection?
Yes-the MPQ3326AGRE-AEC1-P's wettable flank QFN-24 package meets IPC-7095D guidelines for solder paste deposition and reflow. Its side-wettable leads enable automated optical inspection of solder fillets, and the package is qualified for JEDEC J-STD-020 moisture sensitivity level 1 (unlimited floor life at ≤30°C/60% RH).
How is the refresh signal frequency (fREFRESH) calculated, and what is its practical range?
fREFRESH = 127.5kHz / (FRFSH × fPWM), where FRFSH is the 10-bit value in registers 02h–03h (0x001–0x3FF) and fPWM is the selected PWM frequency (220/250/280/330Hz). With FRFSH = 0x1A9 (425) and fPWM = 250Hz, fREFRESH = 300Hz-ideal for synchronizing with 60Hz video frames or LCD gate drivers.
MPQ3326AGRE-AEC1-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 24-VFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- -
- Internal Switch(s):
- Yes
- Number of Outputs:
- 16
- Voltage - Supply (Min):
- 4.5V
- Voltage - Supply (Max):
- 16V
- Voltage - Output:
- 22V
- Current - Output / Channel:
- 80mA
- Frequency:
- 220Hz, 250Hz, 280Hz, 330Hz
- Dimming:
- Analog, PWM
- Applications:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 24-QFN (4x4)
MPQ3326AGRE-AEC1-P FAQ
1.How can I place an order for MPQ3326AGRE-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ3326AGRE-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 MPQ3326AGRE-AEC1-P reliable?
The price and inventory of MPQ3326AGRE-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 MPQ3326AGRE-AEC1-P is usually 5 days.
3.What payment methods are accepted for MPQ3326AGRE-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ3326AGRE-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ3326AGRE-AEC1-P?
MPQ3326AGRE-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ3326AGRE-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 MPQ3326AGRE-AEC1-P?
For technical support, including MPQ3326AGRE-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ3326AGRE-AEC1-P requirements.
6.How does Aetrix verify that MPQ3326AGRE-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPQ3326AGRE-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 MPQ3326AGRE-AEC1-P meets industry standards.
7.What is the process for return or replacement of MPQ3326AGRE-AEC1-P?
All MPQ3326AGRE-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ3326AGRE-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 MPQ3326AGRE-AEC1-P part is unused and in its original packaging.
Return procedure for MPQ3326AGRE-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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