MPQ3367GF-AEC1-Z LED Driver IC Equivalent & Substitute Parts

Part Overview

The MPQ3367GF-AEC1-Z is a 6-channel LED driver IC manufactured by Monolithic Power Systems Inc., classified as a Power Management PMIC. This device functions as a Step-Up (Boost) DC-DC regulator with integrated switching capability, designed for backlight applications. The part operates with a supply voltage range of 3.5V to 36V and delivers up to 150mA per channel across 6 outputs. It features Analog, I2C, and PWM dimming control options and operates at frequencies between 400kHz and 2.2MHz. The device is qualified to AEC-Q100 automotive standards and maintains active product status. Equivalent and substitute parts are identified to provide design flexibility for component sourcing, inventory management, and application-specific requirements.

Substiute Parts

MPQ3367GF-AEC1-Z

Monolithic Power Systems Inc.In Stock: 22922MPQ3367GF-AEC1-Z Datasheet

Current PartRFQ

AP3156FVG-7

Diodes IncorporatedIn Stock: 1555AP3156FVG-7 Datasheet

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FAN5702UMP15X

onsemiIn Stock: 6242FAN5702UMP15X Datasheet

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TPS61181RTER

Texas InstrumentsIn Stock: 4468TPS61181RTER Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MPQ3367GF-AEC1-Z are identified based on functional equivalence within the LED driver IC category. The primary substitution criteria are:

Functional Requirements:

• 6-channel output configuration
• LED driver DC-DC regulator topology
• Backlight application suitability
• Surface mount packaging with exposed pad

Electrical Compatibility Considerations:

• Supply voltage range overlap or compatibility with system design
• Per-channel current output capacity relative to application requirements
• Operating frequency range suitable for LED dimming control
• Dimming control interface compatibility (Analog, I2C, PWM)

Environmental & Compliance Factors:

• Operating temperature range
• RoHS3 compliance
• Product status (Active or Obsolete)
• Automotive qualification where applicable

The identified substitutes employ either Step-Up (Boost) or Switched Capacitor (Charge Pump) topologies. While topology differences exist, both are valid DC-DC regulation approaches for LED driver applications. Substitution feasibility depends on specific circuit requirements, input/output voltage specifications, and current delivery needs of the target application.

Parameter Comparison

Engineering Selection Recommendations

TPS61181RTER (Texas Instruments)

The TPS61181RTER is an active product suitable for applications requiring Step-Up (Boost) topology with PWM dimming control. This device shares the same 6-channel output configuration and backlight application focus as the MPQ3367GF-AEC1-Z. The supply voltage range (5V to 24V) is narrower than the main part, making it suitable for systems operating within this window. Per-channel current output is 25mA, significantly lower than the 150mA capability of the MPQ3367GF-AEC1-Z. Selection of this substitute requires verification that application current requirements do not exceed 25mA per channel. The device is ROHS3 compliant and maintains active product status.

FAN5702UMP15X (onsemi)

The FAN5702UMP15X employs Switched Capacitor (Charge Pump) topology and is classified as an obsolete product. While it provides 6-channel output with I2C and PWM dimming control, its obsolete status presents long-term supply chain risk. The supply voltage range (2.7V to 5.5V) is significantly narrower than the main part. Per-channel current output is 30mA. This substitute is not recommended for new designs due to product status, though it may be considered for legacy system maintenance where inventory is available.

AP3156FVG-7 (Diodes Incorporated)

The AP3156FVG-7 is an active product employing Switched Capacitor (Charge Pump) topology with 6-channel output configuration. The supply voltage range (2.7V to 5.5V) is narrower than the main part, limiting applicability to lower-voltage systems. Per-channel current output is 20mA, substantially lower than the 150mA of the MPQ3367GF-AEC1-Z. Dimming control interface is not specified in available data. The device is ROHS3 compliant and maintains active product status. Selection requires confirmation that application voltage and current requirements align with this device's specifications.

Automotive & Temperature Considerations

The MPQ3367GF-AEC1-Z is the only part in this comparison set with explicit automotive qualification (AEC-Q100) and extended operating temperature range (-40°C to 125°C junction temperature). For automotive applications requiring these certifications, the main part is the appropriate selection. Substitute parts lack automotive qualification and operate to -40°C to 85°C ambient temperature, making them unsuitable for automotive-grade designs.

Frequently Asked Questions (FAQ)

Q: Can the TPS61181RTER directly replace the MPQ3367GF-AEC1-Z in all applications?

A: No. While both devices are 6-channel LED driver ICs with Step-Up (Boost) topology, the TPS61181RTER has significantly lower per-channel current output (25mA vs. 150mA). Direct replacement is only feasible if the application current requirement per channel does not exceed 25mA. Additionally, the supply voltage range differs (5V-24V vs. 3.5V-36V), requiring verification of system voltage compatibility.

Q: Why are the Switched Capacitor (Charge Pump) devices listed as substitutes for a Step-Up (Boost) device?

A: Both topologies function as DC-DC regulators for LED driver applications and share the same 6-channel output configuration and backlight application focus. However, they operate on different principles. Switched Capacitor topology is suitable for lower-voltage, lower-current applications, while Step-Up (Boost) topology accommodates wider input voltage ranges and higher current delivery. Substitution between topologies requires circuit-level analysis to confirm compatibility with specific application requirements.

Q: Is the FAN5702UMP15X suitable for new product designs?

A: No. The FAN5702UMP15X is classified as an obsolete product. While inventory may be available, obsolete status indicates discontinued manufacturing and limited long-term supply availability. New designs should utilize active products such as the TPS61181RTER or AP3156FVG-7 to ensure supply chain continuity and manufacturer support.

Q: What is the significance of the package differences between these devices?

A: The main part uses 28-TSSOP packaging, while all substitutes use 16-pin QFN variants (WQFN, UFQFN, or WQFN). These are physically different packages requiring different PCB footprints and layout considerations. Direct pin-for-pin replacement is not possible without PCB redesign. The smaller QFN packages may offer space advantages in compact designs but require verification of thermal management and signal integrity in the target application.

Q: Why does the MPQ3367GF-AEC1-Z have a higher operating temperature specification than the substitutes?

A: The MPQ3367GF-AEC1-Z specifies junction temperature (TJ) of -40°C to 125°C, while substitutes specify ambient temperature (TA) of -40°C to 85°C. These are different measurement points. Junction temperature is typically higher than ambient temperature due to internal power dissipation. The main part's automotive qualification (AEC-Q100) requires extended temperature range capability, which is reflected in its higher specified operating range.

Q: Can I use the AP3156FVG-7 in an automotive application?

A: No. The AP3156FVG-7 lacks automotive qualification and AEC-Q100 certification. Automotive applications require components qualified to automotive standards. The MPQ3367GF-AEC1-Z is the appropriate selection for automotive-grade designs within this product family.

Q: What does "Exposed Pad" mean in the package specification?

A: Exposed Pad refers to a thermal pad on the bottom of the IC package that is electrically connected (typically to ground or a power rail) and provides enhanced heat dissipation. This feature is present on all devices in this comparison set. The exposed pad must be properly connected to PCB thermal planes during layout to achieve specified thermal performance and operating temperature ratings.

Q: Are all these devices RoHS3 compliant?

A: Yes. All devices listed (MPQ3367GF-AEC1-Z, TPS61181RTER, FAN5702UMP15X, and AP3156FVG-7) are ROHS3 compliant, indicating they meet Restriction of Hazardous Substances Directive requirements and contain no lead, mercury, cadmium, or other restricted substances.