My Inquiry
My Account
Monolithic Power Systems Inc. MPQ3364GR-AEC1-P
- Part No.:
- MPQ3364GR-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- LED Drivers
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
MPQ3364GR-AEC1-P.pdf
- Description:
- IC LED DRVR CTRL PWM 150MA 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MPQ3364GR-AEC1-P from Monolithic Power Systems is a 4-channel, AEC-Q100 Grade 1 automotive-qualified boost WLED driver with peak-current-mode PWM control, integrated 100mΩ/50V low-side MOSFET, and I²C interface. It delivers up to 150mA per channel with ±2.5% inter-channel current matching, supports 15000:1 PWM dimming ratio at ≤200Hz, and operates from 3.5V to 36V input for LCD backlighting in automotive displays.
For engineers reviewing the MPQ3364GR-AEC1-P datasheet, MPQ3364GR-AEC1-P pinout, MPQ3364GR-AEC1-P application, or MPQ3364GR-AEC1-P equivalent, key selection criteria include its AEC-Q100 qualification, 4-channel independent current regulation, phase-shift PWM dimming for EMI/noise reduction, configurable OVP/STH thresholds, and thermal foldback behavior above 125°C.
Technical Context
The MPQ3364GR-AEC1-P implements a fixed-frequency, peak-current-mode boost converter with four independent cathode-connected current sinks. Its internal 5V LDO (VCC) powers gate drive and logic, while cycle-by-cycle current limiting and programmable short-circuit thresholds (via STH pin) enable robust LED string protection.
Dimming is implemented via three modes-direct PWM, analog, and mix-with mode selection via MIX/AD voltage or I²C register. Phase shift across channels (90° for 4 strings) is enabled by PSE pin biasing or register setting, reducing inrush current and audible noise during PWM dimming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 36V - Supports wide automotive battery range including cold-crank (≥4.5V) and load-dump (≤36V) conditions. |
| Max Output Current per Channel | 150mA - Configurable via external ISET resistor; enables driving high-brightness WLED strings in medium-size displays. |
| Dimming Ratio (PWM) | 15000:1 at fPWM ≤ 200Hz - Enables ultra-deep dimming for high-contrast automotive infotainment panels without visible flicker. |
| Switching Frequency | Configurable up to 2.2MHz - Allows compact magnetics and EMI filtering; selectable via resistor, I²C, or external clock sync. |
| Current Matching Accuracy | ±2.5% between channels - Ensures uniform brightness across multi-string LED backlights without manual calibration. |
| OVP Threshold | Programmable via resistor divider on OVP pin - Prevents overvoltage damage to LEDs; default threshold is 2.0V with 200mV hysteresis. |
| Thermal Protection | 170°C shutdown with 20°C hysteresis - Automatically reduces LED current above 125°C junction temperature to sustain operation under thermal stress. |
Pinout & Package
MPQ3364GR-AEC1-P is housed in a thermally enhanced QFN-24 (4mm × 4mm) package with exposed pad connected to AGND. The 24-pin layout supports full I²C control, independent LED string current sourcing, fault signaling, and flexible dimming configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 DIM | PWM brightness control input | Accepts 100Hz–20kHz PWM signal; triggers analog/PWM/mix dimming based on MIX/AD state or I²C register. |
| 2 MIX/AD | Dimming mode selection | 18μA current source; voltage level (<0.3V / 0.5–0.8V / 1.0–1.3V) selects mix/PWM/analog dimming or floating for I²C control. |
| 3 FREQ/SYNC | Switching frequency configuration | Resistor-to-GND sets fSW; external clock input synchronizes boost switching; floating enables I²C-based fSW selection. |
| 4 EN | Enable/disable control | Active-high logic; internal 1MΩ pull-down ensures safe shutdown when unconnected; 1.2V threshold enables precise power sequencing. |
| 5 SCL/PSE & 6 SDA/PSE | I²C interface + phase-shift enable | When tied together and biased 0.75–1.0V, enables channel-phase-shifted PWM dimming; otherwise used as standard I²C bus pins. |
| 9 ISET | LED current reference | Connects external resistor to AGND; sets all four channel currents identically (e.g., 24.9kΩ → 50mA/channel). |
| 13–16 LED1–LED4 | LED string cathode connections | Four independent current-sink outputs; unused channels auto-detected when tied to GND or disabled via CH2:0 register. |
| 18 SW | Internal MOSFET drain node | Drives external boost inductor; integrates 100mΩ/50V N-channel MOSFET; requires low-ESR ceramic output capacitor. |
| 19 OVP | Over-voltage protection sense | Resistor divider from VOUT to GND sets trip point (default 2.0V); latches off on overvoltage and asserts FF pin. |
| 20 STH | LED short threshold configuration | 18μA current source; resistor sets short-detection voltage; floating enables I²C-based TH_S1:0 selection. |
| 21 ADR | I²C address selection | Three valid addresses: 0x38 (floating), 0x39 (0.4–1.4V), 0x3A (<0.4V); enables multi-device I²C bus addressing. |
| 22 VCC | Internal 5V LDO output | Powers internal logic and gate driver; requires local 1μF ceramic decoupling; drops to 0V during shutdown. |
| 23 SD | External PMOS disconnect control | Open-drain output; pulls low during fault to disable external high-side switch; float if unused. |
| 24 VIN | Main power input | Supplies IC and boost converter; UVLO at 3.1V with 100mV hysteresis; absolute max 42V for transient robustness. |
| Exposed Pad | Thermal & ground connection | Must be soldered to AGND plane for thermal dissipation and EMI suppression; contributes to θJA = 42°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Phase-shift PWM dimming | 90° channel offset for 4-string operation eliminates simultaneous current surges, reducing conducted EMI and audible coil whine. |
| Configurable LED short threshold | STH pin allows precise tuning of short-circuit detection voltage (e.g., 0.5V–1.5V), preventing false trips in high-parasitic-layout automotive modules. |
| Frequency spread spectrum (FSS) | Integrated FSS modulates switching frequency to lower peak EMI amplitude, easing compliance with CISPR 25 Class 5 requirements. |
| Auto thermal foldback | Reduces LED current linearly above 125°C junction temperature-maintains display functionality without abrupt shutdown during sustained thermal stress. |
| Fault flag with latch | FF pin asserts low and remains latched until EN toggled or I²C reset command issued-enables reliable system-level fault logging and recovery. |
| Multi-dimming flexibility | Mix dimming (25% transfer point) combines analog smoothness at high brightness with PWM precision at low brightness-ideal for glare-free night-mode UIs. |
Applications
| Automotive Instrument Clusters | Center Stack Infotainment Displays |
|---|---|
|
Use Scenario: High-reliability backlight for TFT-LCD gauges operating across -40°C to +105°C ambient with EMC constraints. IC Role / Device Role / Timing Role: 4-channel WLED driver providing synchronized, phase-shifted PWM dimming to eliminate coil noise during gauge animation sequences. Use Value: AEC-Q100 Grade 1 qualification ensures lifetime reliability; 15000:1 dimming enables seamless transition from daylight to night vision modes. |
Use Scenario: Backlight for 10.25" capacitive touchscreen in premium vehicle center console with dynamic contrast enhancement. IC Role / Device Role / Timing Role: I²C-configurable boost controller managing four independent LED strings with mix dimming for flicker-free video playback. Use Value: ±2.5% current matching prevents visible banding; programmable OVP protects against display failure due to open-circuit LED string faults. |
| Digital Rearview Mirrors | Head-Up Display (HUD) Projection Modules |
|
Use Scenario: Compact, thermally constrained rearview mirror with anti-glare auto-dimming using dual-zone WLED backlight. IC Role / Device Role / Timing Role: Dual-channel operation (LED1–LED2 active) with thermal foldback to maintain brightness stability during prolonged sun exposure. Use Value: QFN-24 package fits tight board space; 2.2MHz fSW option minimizes inductor size and improves transient response to rapid ambient light changes. |
Use Scenario: High-luminance HUD combiner illumination requiring precise color temperature control and zero-flicker operation. IC Role / Device Role / Timing Role: Four-channel current sink driving RGBW LED arrays with independent dimming per channel via I²C registers. Use Value: 200:1 analog dimming ratio enables fine-grained luminance control; fault flag (FF) integration simplifies ASIL-B diagnostic coverage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 4-channel automotive WLED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL8863-7DT-13 (Diodes Inc.) | 36V max input, 120mA/ch, no I²C, analog/PWM only, no phase shift, 10000:1 PWM dimming | Lacks AEC-Q100 Grade 1 rating and mixed-dimming capability; suitable for cost-sensitive non-safety-critical clusters. | Select when I²C control and ultra-deep dimming are not required; verify thermal derating at >85°C ambient. |
| LM3409QMYX/NOPB (TI) | 40V max input, single-channel, external MOSFET, no integrated current sinks, 1000:1 dimming | Requires external current-setting circuitry per channel; lacks multi-string synchronization and AEC-Q100 qualification. | Choose only for custom multi-IC designs where channel independence and layout flexibility outweigh integration benefits. |
Compared with AL8863-7DT-13 and LM3409QMYX/NOPB, the MPQ3364GR-AEC1-P delivers superior integration (4-channel current sinks + I²C + phase shift), higher dimming resolution (15000:1), and full AEC-Q100 Grade 1 compliance-making it optimal for next-generation automotive displays demanding functional safety and visual quality.
Availability
MPQ3364GR-AEC1-P is available at Aetrix Electronics and suitable for automotive instrument clusters, center stack infotainment displays, and digital rearview mirrors requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant WLED backlighting.
Supply support for MPQ3364GR-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 design focus on efficiency, integration, and reliability for automotive, industrial, and consumer applications.
The MPQ3364 belongs to MPS's AEC-Q100-qualified LED driver product line, engineered specifically for automotive display backlighting systems requiring high dimming fidelity, thermal resilience, and EMI robustness in harsh environments.
FAQ
What is the maximum allowable LED string voltage for MPQ3364GR-AEC1-P?
The device regulates output voltage dynamically to meet the highest forward voltage among active LED strings. Absolute maximum SW pin voltage is +50V, and OVP threshold is programmable up to ~25V via external resistor divider-enabling support for up to 12-series white LEDs (typ. 3.2V each) at 125°C ambient.
How does the phase-shift function reduce EMI in automotive applications?
By staggering the turn-on timing of LED current sources (e.g., 90° apart for 4 strings), the MPQ3364GR-AEC1-P spreads input current harmonics across time, lowering peak RMS current and conducted emissions. This directly improves CISPR 25 Class 5 compliance without adding external filters or shielding.
Can MPQ3364GR-AEC1-P drive fewer than four LED strings?
Yes. Unused LEDx pins (e.g., LED4) can be tied to AGND for automatic channel disablement at startup, or channels can be selectively disabled via I²C register CH2:0 (011 = 3 strings, 100 = 2 strings). All protections remain active for configured strings only.
What is the role of the SD pin during fault conditions?
The SD pin is an open-drain output that pulls low during OVP, OTP, OCP, LED short/open, or inductor short faults. When connected to the gate of an external P-channel MOSFET, it disconnects VIN from the boost stage-preventing fault propagation and enabling safe system-level recovery.
Does MPQ3364GR-AEC1-P support daisy-chained I²C communication?
No. It supports standard I²C bus topology with up to three unique addresses (0x38, 0x39, 0x3A) set via ADR pin biasing. Daisy-chaining is not supported; multiple devices require individual address assignment and shared SCL/SDA lines with proper pull-ups.
How is thermal foldback behavior implemented in MPQ3364GR-AEC1-P?
Internal temperature sensing triggers progressive LED current reduction starting at 125°C junction temperature. At 170°C, thermal shutdown activates with 20°C hysteresis. Foldback slope is fixed and non-programmable-ensuring predictable brightness decay without software intervention.
What PCB layout practices are critical for stable operation?
Minimize SW and PGND loop area; place 1μF ceramic capacitor within 2mm of VCC pin; connect exposed pad fully to AGND plane with ≥6 thermal vias; route ISET and OVP traces away from noisy SW node; use separate AGND and PGND planes joined only at single point near VIN decoupling.
MPQ3364GR-AEC1-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 24-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Controller
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 4
- Voltage - Supply (Min):
- 3.5V
- Voltage - Supply (Max):
- 36V
- Voltage - Output:
- -
- Current - Output / Channel:
- 150mA
- Frequency:
- 340kHz ~ 2.42MHz
- Dimming:
- Analog, PWM
- Applications:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-QFN (4x4)
MPQ3364GR-AEC1-P FAQ
1.How can I place an order for MPQ3364GR-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ3364GR-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 MPQ3364GR-AEC1-P reliable?
The price and inventory of MPQ3364GR-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 MPQ3364GR-AEC1-P is usually 5 days.
3.What payment methods are accepted for MPQ3364GR-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ3364GR-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ3364GR-AEC1-P?
MPQ3364GR-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ3364GR-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 MPQ3364GR-AEC1-P?
For technical support, including MPQ3364GR-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ3364GR-AEC1-P requirements.
6.How does Aetrix verify that MPQ3364GR-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPQ3364GR-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 MPQ3364GR-AEC1-P meets industry standards.
7.What is the process for return or replacement of MPQ3364GR-AEC1-P?
All MPQ3364GR-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ3364GR-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 MPQ3364GR-AEC1-P part is unused and in its original packaging.
Return procedure for MPQ3364GR-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPQ3364GR-AEC1-P Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
Tech Hub
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
