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Monolithic Power Systems Inc. MPQ3362GJ-AEC1-P
- Part No.:
- MPQ3362GJ-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- LED Drivers
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
MPQ3362GJ-AEC1-P.pdf
- Description:
- IC LED DRV RGLTR PWM 4A TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:768
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Product details
Overview
MPQ3362GJ-AEC1-P from Monolithic Power Systems is an AEC-Q100 qualified single-string boost LED driver IC with 3V–36V input range, internal 80mΩ/40V MOSFET, 4A peak current limit, 0.2V feedback threshold, and dual analog/PWM dimming on a shared EN/DIM pin - used in automotive LCD backlighting to regulate up to 36V LED strings at 200mA with 95% efficiency.
For engineers reviewing the MPQ3362GJ-AEC1-P datasheet, MPQ3362GJ-AEC1-P pinout, MPQ3362GJ-AEC1-P application, or MPQ3362GJ-AEC1-P equivalent, key selection criteria include its TSOT23-8 package thermal performance (θJA = 100°C/W), configurable 200kHz–2.2MHz switching frequency, OVP/short-LED/thermal protections, and dimming mode auto-detection (PWM <2kHz vs analog >5kHz).
Technical Context
The MPQ3362GJ-AEC1-P implements peak current-mode control with internal slope compensation to stabilize duty cycles above 50%, enabling robust regulation across wide VIN (3V–36V) and VOUT (up to 36V) ranges. Its error amplifier features 250μA/V transconductance and COMP pin-based RC compensation for loop tuning.
Dimming is managed via a single EN/DIM pin: logic-level enable/disable, PWM dimming below 2kHz (hard-switched on/off), and analog dimming above 5kHz (linear current scaling via FB voltage modulation). Protection includes UVLO (2.5V threshold), OVP (1.18V on OVP pin), short-FB detection (600mV), and thermal shutdown at 170°C with 20°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3V to 36V - supports direct connection to automotive battery (9V–16V nominal) and extended cold-crank (down to 3V) without external pre-regulator. |
| Output Voltage Capability | Up to 36V - regulates single-string white LED arrays requiring ≥30V forward voltage (e.g., 10×3V LEDs). |
| Feedback Voltage | 200mV ±4mV - low reference minimizes I²R loss in current-sense resistor, improving efficiency in high-current LED applications. |
| Switching Frequency | 200kHz to 2.2MHz - adjustable via ROSC resistor or external SYNC signal; enables EMI optimization and compact magnetics design. |
| Peak Switch Current Limit | 4A - internal N-channel MOSFET (RON = 80mΩ @ 4V) handles transient overloads without external current-sense amplifiers. |
| Dimming Interface | Single-pin EN/DIM with auto-mode detection - eliminates need for separate PWM and analog control lines, reducing PCB routing complexity. |
| Protections | UVLO, OVP, short-LED, short-FB, thermal shutdown, cycle-by-cycle OCP - comprehensive fault coverage required for AEC-Q100 automotive compliance. |
Pinout & Package
MPQ3362GJ-AEC1-P is housed in a thermally enhanced TSOT23-8 package (2.9mm × 1.6mm × 0.85mm), optimized for high-power density LED driver layouts with exposed pad for thermal dissipation (θJC = 55°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Switch node | Drain of internal 40V/80mΩ MOSFET; connects to boost inductor and rectifier diode - carries high di/dt switching current. |
| 2 VIN | Power input | Supplies IC bias and switch driver; supports bootstrapped operation when tied to output during startup. |
| 3 COMP | Error amplifier output | Connects to RC compensation network to stabilize control loop; source/sink current limited to ±30μA. |
| 4 EN/DIM | Enable & dimming control | Logic-enable (high = on), disable (low ≥20ms), PWM dimming (<2kHz), or analog dimming (>5kHz) - single-pin multimode interface. |
| 5 OSC/SYNC | Frequency configuration | Resistor-set fSW (200kHz–2.2MHz) or external clock synchronization input - enables EMI spread-spectrum or system clock alignment. |
| 6 FB | Current-sense feedback | 200mV regulation threshold; monitors voltage across external RFB to set LED current (ILED = 0.2V / RFB). |
| 7 OVP | Over-voltage sense | Detects output overvoltage via resistive divider; triggers shutdown if voltage exceeds 1.18V (1.26V max) on this pin. |
| 8 GND | Power and signal ground | Common return for power path, control circuitry, and thermal pad - must be low-impedance plane for stability and thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 40V/80mΩ MOSFET | Eliminates external high-side switch and associated gate drive complexity while maintaining 95% peak efficiency at 1MHz. |
| Auto-selectable dimming modes | EN/DIM pin detects input frequency: <2kHz → PWM dimming (no soft-start); >5kHz → analog dimming (continuous current scaling). |
| Configurable switching frequency | 200kHz–2.2MHz via ROSC resistor or SYNC signal - allows trade-off between efficiency (lower fSW) and component size (higher fSW). |
| Comprehensive fault protection | Includes UVLO (2.5V), OVP (1.18V), short-FB (600mV), thermal shutdown (170°C), and latch-off OCP (6.5A) - meets AEC-Q100 stress test requirements. |
| Low 0.3μA shutdown current | Enables always-on automotive systems (e.g., daytime running lights) with minimal battery drain during sleep mode. |
Applications
| Automotive Instrument Cluster Backlighting | Center Stack Infotainment Display |
|---|---|
Use Scenario: Driving LED backlight for TFT-LCD instrument clusters in vehicles operating across -40°C to +125°C ambient. IC Role / Device Role / Timing Role: Boost LED driver regulating constant current to 6–8 white LEDs in series, with analog dimming synchronized to ambient light sensor output. Use Value: 0.2V FB threshold reduces RFB power loss; TSOT23-8 package fits tight dashboard space; AEC-Q100 qualification ensures reliability under vibration and thermal cycling. | Use Scenario: Powering middle-size (7–10 inch) LCD displays in center console infotainment units with dynamic brightness control. IC Role / Device Role / Timing Role: Single-string boost controller delivering 200mA at 30–36V, using PWM dimming triggered by MCU GPIO for frame-synchronized brightness updates. Use Value: 4A peak current limit handles inrush during cold start; OVP protection prevents damage during load dump transients; soft-start limits inrush into output capacitance. |
| Automotive Rear Combination Lamp | Commercial Vehicle Head-Up Display (HUD) |
Use Scenario: Driving red/amber LED strings in rear combination lamps where EMC compliance and thermal robustness are critical. IC Role / Device Role / Timing Role: High-efficiency boost driver with 2.2MHz fSW option to shift switching noise above AM radio band; uses EN/DIM for CAN-controlled dimming. Use Value: Configurable fSW enables EMI filtering optimization; thermal shutdown (170°C) protects against enclosed lamp housing temperatures; TSOT23-8 aids automated assembly. | Use Scenario: Regulating green LED backlight for HUD combiner optics requiring precise luminance stability across temperature. IC Role / Device Role / Timing Role: Precision current source with analog dimming mode for smooth brightness transitions; FB accuracy (±2mV) ensures consistent photometric output. Use Value: 200mV FB tolerance (±2%) enables <±3% LED current accuracy; low 1.5mA operating IQ minimizes heat generation near optical components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL8862T-13 | Fixed 1.3MHz fSW; no analog dimming; requires external MOSFET; 30V max VOUT | Lacks dual dimming mode and integrated switch; lower output voltage ceiling limits LED string length | Select when fixed-frequency simplicity and external FET flexibility outweigh need for analog dimming or 36V capability |
| LM3409QMY/NOPB | Adjustable fSW (200kHz–1MHz); external MOSFET; 40V max VOUT; no integrated OVP pin | Requires external OVP circuitry; higher BOM count; wider VOUT range but no AEC-Q100 grade | Choose for non-automotive industrial lighting where AEC-Q100 is not mandated and higher VOUT margin is needed |
Compared with AL8862T-13 and LM3409QMY/NOPB, MPQ3362GJ-AEC1-P delivers integrated switching, dual dimming, AEC-Q100 qualification, and 36V output in a space-constrained TSOT23-8 - making it optimal for automotive display backlighting where reliability, footprint, and feature integration are prioritized.
Availability
MPQ3362GJ-AEC1-P is available at Aetrix Electronics and suitable for automotive instrument cluster backlighting, center stack infotainment displays, and rear combination lamp designs requiring stable component supply across extended temperature and lifecycle demands.
Supply support for MPQ3362GJ-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 markets.
The MPQ3362 belongs to MPS's AEC-Q100 qualified LED driver product line, engineered specifically for automotive display backlighting applications demanding high efficiency, compact packaging, and robust fault protection under harsh environmental conditions.
FAQ
What dimming modes does MPQ3362GJ-AEC1-P support, and how are they selected?
The MPQ3362GJ-AEC1-P supports both PWM and analog dimming on the same EN/DIM pin. If a signal below 2kHz is applied, it enters PWM dimming mode (hard on/off switching). If above 5kHz, it operates in analog dimming mode (linear current scaling via FB voltage modulation). No external configuration is needed - mode detection is automatic.
Does MPQ3362GJ-AEC1-P require an external MOSFET?
No. The MPQ3362GJ-AEC1-P integrates an internal 40V-rated, 80mΩ N-channel MOSFET capable of 4A peak current. This eliminates the need for an external switch, reducing BOM count, PCB area, and layout complexity in single-string boost LED applications up to 36V output.
How is over-voltage protection implemented on MPQ3362GJ-AEC1-P?
OVP is implemented via the dedicated OVP pin, which senses output voltage through a resistive divider. When the voltage at this pin reaches 1.18V (typical), the IC disables switching. Recovery occurs when the pin voltage drops to 1.08V (1.18V – 100mV hysteresis), providing robust protection against open-LED or feedback-loop failure conditions.
What is the minimum input voltage required for MPQ3362GJ-AEC1-P to operate?
The MPQ3362GJ-AEC1-P has a minimum operating input voltage of 3V, verified by its UVLO rising threshold of 2.5V (with 100mV hysteresis). This enables reliable startup and operation during automotive cold-crank events where battery voltage can dip to 3V–3.5V, without requiring auxiliary bias supplies.
Is MPQ3362GJ-AEC1-P qualified for automotive use?
Yes. MPQ3362GJ-AEC1-P is explicitly qualified to AEC-Q100 Grade 1 standards (operating junction temperature range: -40°C to +125°C), with full qualification testing including HTOL, TC, UHAST, and ESD (HBM ±2000V, CDM ±1000V), making it suitable for under-hood and cabin automotive lighting applications.
How is switching frequency configured on MPQ3362GJ-AEC1-P?
Switching frequency is set using an external resistor (ROSC) connected from the OSC/SYNC pin to GND. The relationship is fSW(kHz) ≈ 40000 / ROSC(kΩ), yielding 200kHz–2.2MHz range. Alternatively, a clean clock signal within that frequency band can be applied directly to OSC/SYNC for synchronization with system timing sources.
MPQ3362GJ-AEC1-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MPQ
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 36V
- Voltage - Output:
- 36V
- Current - Output / Channel:
- 4A
- Frequency:
- 200kHz ~ 2.2MHz
- Dimming:
- Analog, PWM
- Applications:
- Backlight, Lighting
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-8
MPQ3362GJ-AEC1-P FAQ
1.How can I place an order for MPQ3362GJ-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ3362GJ-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 MPQ3362GJ-AEC1-P reliable?
The price and inventory of MPQ3362GJ-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 MPQ3362GJ-AEC1-P is usually 5 days.
3.What payment methods are accepted for MPQ3362GJ-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ3362GJ-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ3362GJ-AEC1-P?
MPQ3362GJ-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ3362GJ-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 MPQ3362GJ-AEC1-P?
For technical support, including MPQ3362GJ-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ3362GJ-AEC1-P requirements.
6.How does Aetrix verify that MPQ3362GJ-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPQ3362GJ-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 MPQ3362GJ-AEC1-P meets industry standards.
7.What is the process for return or replacement of MPQ3362GJ-AEC1-P?
All MPQ3362GJ-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ3362GJ-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 MPQ3362GJ-AEC1-P part is unused and in its original packaging.
Return procedure for MPQ3362GJ-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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