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MP3331GC-P LED Driver IC Equivalent & Substitute Parts
Part Overview
The MP3331GC-P is a LED Driver IC manufactured by Monolithic Power Systems Inc., classified as a Power Management PMIC. This device functions as a 1-output DC DC regulator with Step-Up (Boost) topology, PWM dimming capability, and 2A output current capacity. It is packaged in 9-WLCSP (1.7x1.7) and designed for camera flash applications.
The MP3331GC-P carries a product status of "Not For New Designs," indicating it is obsolete or being phased out. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for existing applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | MP3331GC-P |
| Manufacturer | Monolithic Power Systems Inc. |
| Category | Power Management (PMIC) |
| Type | DC DC Regulator |
| Topology | Step-Up (Boost) |
| Number of Outputs | 1 |
| Voltage - Supply (Min) | 2.7V |
| Voltage - Supply (Max) | 5.5V |
| Current - Output / Channel | 2A |
| Frequency | 4MHz |
| Dimming | PWM |
| Applications | Camera Flash |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Package / Case | 9-WFBGA, WLCSP |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Product Status | Not For New Designs |
Substitute Part Grouping Explanation
Substitute parts for the MP3331GC-P are selected based on the following critical parameters that determine functional compatibility:
Primary Substitution Criteria:
- Topology: Step-Up (Boost) DC DC Regulator
- Input Voltage Range: 2.7V to 5.5V supply compatibility
- Output Current Capability: Minimum 2A or higher
- Dimming Method: PWM control
- Internal Switch: Yes (integrated power switch required)
- Application Suitability: Camera Flash or equivalent high-current LED driver applications
- Product Status: Active (currently manufactured and available)
Substitute parts are grouped into two categories based on output current capacity and topology alignment:
Group 1: High-Current Step-Up (Boost) Regulators (≥2A) These parts maintain the 2A+ output current specification and Step-Up topology of the original MP3331GC-P, ensuring direct functional replacement in camera flash applications.
Group 2: Alternative Topology Regulators (Switched Capacitor, SEPIC) These parts provide equivalent LED driver functionality with different topologies or lower output currents, suitable for applications with reduced current requirements or alternative circuit configurations.
Parameter Comparison
| Parameter | MP3331GC-P | LM3565TLX/NOPB | LM3410XMYE/NOPB | LM2753SDX/NOPB | LM2759SDX/NOPB | LT3465AES6#TRPBF |
|---|---|---|---|---|---|---|
| Manufacturer | MPS | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices |
| Type | DC DC Regulator | DC DC Regulator | DC DC Regulator | DC DC Regulator | DC DC Regulator | DC DC Regulator |
| Topology | Step-Up (Boost) | Step-Up (Boost) | SEPIC, Step-Up (Boost) | Switched Capacitor (Charge Pump) | Switched Capacitor (Charge Pump) | Step-Up (Boost) |
| Number of Outputs | 1 | 1 | 1 | 1 | 1 | 1 |
| Voltage - Supply (Min) | 2.7V | 2.5V | 2.7V | 3V | 2.7V | 2.7V |
| Voltage - Supply (Max) | 5.5V | 5.5V | 5.5V | 5.5V | 5.5V | 16V |
| Current - Output / Channel | 2A | 930mA (Flash) | 2.8A (Switch) | 400mA (Flash) | 1A (Flash) | 225mA (Switch) |
| Frequency | 4MHz | 4MHz | 1.6MHz | 725kHz | 1MHz | 2.4MHz |
| Dimming | PWM | PWM | PWM | PWM | I2C | PWM |
| Applications | Camera Flash | Camera Flash | Backlight | Camera Flash | Camera Flash | Backlight |
| Operating Temperature | -40°C ~ 125°C (TJ) | -30°C ~ 85°C (TA) | -40°C ~ 125°C (TJ) | -40°C ~ 85°C (TA) | -30°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Package / Case | 9-WFBGA, WLCSP | 16-WFBGA, DSBGA | 8-PowerTSSOP, 8-MSOP | 10-WFDFN Exposed Pad | 12-WFDFN Exposed Pad | SOT-23-6 Thin, TSOT-23-6 |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Not For New Designs | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
Primary Substitute: LM3410XMYE/NOPB
The LM3410XMYE/NOPB from Texas Instruments is the most suitable substitute for the MP3331GC-P. It maintains the critical specifications: 2.7V to 5.5V input voltage range, 2.8A switch current (exceeding the 2A requirement), Step-Up (Boost) topology with SEPIC capability, PWM dimming, and -40°C to 125°C operating temperature range. Product status is Active, ensuring long-term availability. The 8-HVSSOP package differs from the original 9-WLCSP, requiring PCB layout redesign but offering superior thermal performance and easier assembly.
Secondary Substitute: LM3565TLX/NOPB
The LM3565TLX/NOPB from Texas Instruments provides Step-Up (Boost) topology with 930mA flash output current, matching the 4MHz frequency of the original part. Input voltage range (2.5V to 5.5V) and PWM dimming are compatible. This part is suitable for camera flash applications with slightly reduced current requirements. The 16-DSBGA package is similar in form factor to the original 9-WLCSP, minimizing PCB redesign effort. Product status is Active.
Alternative Substitute: LM2753SDX/NOPB
The LM2753SDX/NOPB from Texas Instruments uses Switched Capacitor (Charge Pump) topology instead of Step-Up (Boost), with 400mA flash output current. It maintains 2.7V to 5.5V input voltage compatibility, PWM dimming, and camera flash application suitability. This topology is appropriate for lower-current flash circuits. Product status is Active with high inventory availability (4900 pcs).
Compliance Verification:
All recommended substitutes are ROHS3 compliant, REACH unaffected, and carry EAR99 ECCN classification, matching the regulatory status of the original MP3331GC-P. All substitute parts are currently in Active product status, ensuring manufacturing continuity and supply chain reliability.
Frequently Asked Questions (FAQ)
Q: Can the LM3410XMYE/NOPB directly replace the MP3331GC-P without circuit modifications?
A: The LM3410XMYE/NOPB provides equivalent electrical functionality with superior output current (2.8A vs. 2A) and extended input voltage range. However, the package differs (8-HVSSOP vs. 9-WLCSP), requiring PCB layout redesign. Pin configuration and control signal compatibility must be verified against device datasheets before implementation.
Q: What is the difference between Step-Up (Boost) and Switched Capacitor (Charge Pump) topologies for LED driver applications?
A: Step-Up (Boost) regulators use an inductor to store and transfer energy, providing continuous output current regulation and efficiency across wide input voltage ranges. Switched Capacitor (Charge Pump) regulators use capacitors for energy transfer, offering simpler integration with lower component count but typically lower efficiency and current capacity. For camera flash applications requiring 2A output, Step-Up topology is preferred.
Q: Is the LM2759SDX/NOPB suitable as a substitute if my application uses I2C dimming control instead of PWM?
A: The LM2759SDX/NOPB features I2C dimming control, making it suitable only if your circuit design supports I2C communication. The original MP3331GC-P uses PWM dimming. If your application requires PWM dimming, select substitutes with PWM capability (LM3410XMYE/NOPB, LM3565TLX/NOPB, or LM2753SDX/NOPB).
Q: What are the thermal considerations when switching from 9-WLCSP to 8-HVSSOP packaging?
A: The 8-HVSSOP package includes a PowerPad (exposed thermal pad) that improves heat dissipation compared to the 9-WLCSP. This allows better thermal management in high-current applications. PCB layout must include adequate thermal vias connected to ground or power planes to maximize heat transfer effectiveness.
Q: Are all substitute parts available in the same packaging options?
A: No. Substitute parts use different packages: LM3410XMYE/NOPB (8-HVSSOP), LM3565TLX/NOPB (16-DSBGA), LM2753SDX/NOPB (10-WFDFN), and LT3465AES6#TRPBF (TSOT-23-6). Package selection depends on PCB space constraints, thermal requirements, and assembly capabilities. Verify package compatibility with your manufacturing process before selection.
Q: What is the minimum output current requirement to ensure substitute part compatibility?
A: The MP3331GC-P provides 2A output current. Substitute parts with 2A or higher output current (LM3410XMYE/NOPB at 2.8A) are direct functional replacements. Parts with lower output current (LM3565TLX/NOPB at 930mA, LM2753SDX/NOPB at 400mA) are suitable only for applications with reduced current demands or parallel configurations.
Q: Do all substitute parts support the same input voltage range (2.7V to 5.5V)?
A: Most substitutes support 2.7V to 5.5V input range. LM2753SDX/NOPB has a minimum of 3V (not 2.7V), and LT3465AES6#TRPBF supports up to 16V maximum. Verify input voltage compatibility with your power supply specifications before selection.
Q: What is the significance of "Product Status: Active" for substitute parts?
A: Active product status indicates the part is currently manufactured, supported by the vendor, and available for long-term procurement. This ensures design continuity, ongoing technical support, and supply chain reliability. The original MP3331GC-P carries "Not For New Designs" status, making Active substitutes essential for production sustainability.
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