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MP4033GK LED Driver IC Equivalent & Substitute Parts
Part Overview
The MP4033GK is an active LED Driver IC manufactured by Monolithic Power Systems, designed for commercial and industrial lighting applications. This single-output DC-DC regulator utilizes Flyback topology with PWM, analog, and TRIAC dimming capabilities. The device operates across a 11V to 27V supply range and is housed in a 10-MSOP package. With 1,098 units in current inventory and active product status, the MP4033GK serves as a primary component for LED driver circuits requiring multiple dimming control methods. Equivalent and substitute parts are identified based on matching functional topology, dimming capabilities, package compatibility, and operating temperature ranges suitable for industrial lighting environments.
Substiute Parts
Key Parameters
| Parameter | MP4033GK Value |
|---|---|
| Manufacturer | Monolithic Power Systems |
| Category | Power Management (PMIC) |
| Type | DC DC Regulator |
| Topology | Flyback |
| Number of Outputs | 1 |
| Voltage - Supply (Min) | 11V |
| Voltage - Supply (Max) | 27V |
| Dimming | Analog, PWM, TRIAC |
| Applications | Commercial & Industrial Lighting |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitute parts for the MP4033GK are selected based on the following critical parameters that determine functional compatibility:
Primary Substitution Criteria:
- Single output DC-DC regulator topology
- Dimming capability (Analog, PWM, or TRIAC support)
- Operating temperature range of -40°C minimum
- Surface mount packaging
- ROHS3 compliance and active product status
- Supply voltage compatibility or overlap with 11V-27V range
Topology Considerations: The MP4033GK employs Flyback topology. Substitute parts may utilize alternative topologies (Step-Down/Buck, Step-Up/Boost, SEPIC, or Switched Capacitor) provided they deliver equivalent functional performance for LED driver applications and maintain dimming control capabilities.
Dimming Method Compatibility: The MP4033GK supports Analog, PWM, and TRIAC dimming. Substitutes must support at least one of these dimming methods to maintain circuit functionality.
Package and Thermal Requirements: All substitutes are surface-mount devices with operating temperature ranges supporting industrial lighting (-40°C minimum). Package form factors vary but maintain compatibility with standard PCB assembly processes.
Parameter Comparison
| Parameter | MP4033GK | LT3592EMSE#PBF | LM3402HVMM/NOPB | LT3477EUF#PBF | IS31BL3508A-STLS2-TR | LT3593EDC#TRMPBF | LTC3201EMS#PBF | LTC3490ES8#PBF | MCP1643-I/MC |
|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | MPS | ADI | TI | ADI | Lumissil | ADI | ADI | ADI | Microchip |
| Type | DC DC Regulator | DC DC Regulator | DC DC Regulator | DC DC Regulator | DC DC Regulator | DC DC Regulator | DC DC Regulator | DC DC Regulator | DC DC Regulator |
| Topology | Flyback | Step-Down (Buck) | Step-Down (Buck) | Flyback, SEPIC, Buck, Boost | Step-Up (Boost) | Step-Up (Boost) | Switched Capacitor | Step-Up (Boost) | Step-Up (Boost) |
| Number of Outputs | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Voltage - Supply (Min) | 11V | 3.6V | 6V | 2.5V | 2.7V | 2.7V | 2.7V | 1V | 0.5V |
| Voltage - Supply (Max) | 27V | 36V | 75V | 25V | 5.5V | 5.5V | 4.5V | 3.2V | 5V |
| Dimming | Analog, PWM, TRIAC | — | PWM | PWM | Analog, PWM | — | — | Analog | PWM |
| Applications | Commercial & Industrial Lighting | Lighting | Lighting | — | Backlight | Backlight | Backlight | — | Backlight |
| Operating Temperature (Min) | -40°C | -40°C | -40°C | -40°C | -40°C | -40°C | -40°C | -40°C | -40°C |
| Operating Temperature (Max) | 125°C | 125°C | 125°C | 85°C | 85°C | 85°C | 85°C | 85°C | 85°C |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 10-MSOP | 10-MSOP-EP | 8-VSSOP | 20-QFN (4x4) | SOT-23-6 | 6-DFN (2x2) | 10-MSOP | 8-SOIC | 8-DFN (2x3) |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 3 (168 Hours) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Active | Active | Active | Active | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
Primary Substitutes for Industrial Lighting Applications (11V-27V Supply Range):
LT3592EMSE#PBF and LM3402HVMM/NOPB are the most suitable direct substitutes for the MP4033GK in industrial lighting circuits. Both devices operate within or exceed the MP4033GK supply voltage range (LT3592: 3.6V-36V; LM3402: 6V-75V), support PWM dimming, maintain -40°C to 125°C operating temperature ranges, and carry ROHS3 compliance with MSL-1 ratings. LT3592EMSE#PBF offers identical 10-MSOP packaging, while LM3402HVMM/NOPB provides 8-VSSOP packaging with higher voltage capability.
Multi-Topology Alternative:
LT3477EUF#PBF provides exceptional flexibility with support for Flyback, SEPIC, Buck, and Boost topologies in a single device. Operating range of 2.5V-25V covers the MP4033GK supply window, supports PWM dimming, and maintains -40°C to 85°C operation. The 20-QFN package requires PCB layout redesign but offers advanced integration.
Lower Supply Voltage Applications:
For circuits operating below 11V, IS31BL3508A-STLS2-TR (2.7V-5.5V), LT3593EDC#TRMPBF (2.7V-5.5V), LTC3201EMS#PBF (2.7V-4.5V), LTC3490ES8#PBF (1V-3.2V), and MCP1643-I/MC (0.5V-5V) provide alternative topologies suitable for backlight and lower-voltage LED driver applications. These devices maintain active product status and ROHS3 compliance but operate at reduced maximum temperatures (85°C) compared to the MP4033GK.
Compliance and Availability:
All substitute parts maintain ROHS3 compliance, active product status, and adequate inventory levels. MSL-1 rated devices (LT3592EMSE#PBF, LM3402HVMM/NOPB, LT3477EUF#PBF, LT3593EDC#TRMPBF, LTC3201EMS#PBF, LTC3490ES8#PBF, MCP1643-I/MC) require no special moisture handling. IS31BL3508A-STLS2-TR carries MSL-3 rating, requiring 168-hour moisture sensitivity management.
Frequently Asked Questions (FAQ)
Q: Can LT3592EMSE#PBF directly replace MP4033GK in existing designs?
A: LT3592EMSE#PBF shares identical 10-MSOP packaging and supports the full 11V-27V supply range of the MP4033GK with extended capability to 36V. Both devices support PWM dimming and maintain -40°C to 125°C operation. However, the MP4033GK supports TRIAC dimming while LT3592EMSE#PBF does not. Circuit redesign is required if TRIAC dimming functionality is essential.
Q: What is the key difference between Flyback and Step-Down (Buck) topology substitutes?
A: The MP4033GK uses Flyback topology, which provides galvanic isolation and operates across wide input voltage ranges. Step-Down (Buck) substitutes like LM3402HVMM/NOPB and LT3592EMSE#PBF do not provide isolation but deliver efficient regulation for non-isolated applications. Selection depends on circuit isolation requirements and input/output voltage relationships.
Q: Why do some substitutes have lower maximum operating temperatures?
A: Devices like IS31BL3508A-STLS2-TR, LT3593EDC#TRMPBF, and MCP1643-I/MC are optimized for backlight applications with 85°C maximum junction temperature ratings. The MP4033GK reaches 125°C, supporting higher thermal stress in industrial lighting environments. For applications requiring sustained operation above 85°C, LT3592EMSE#PBF or LM3402HVMM/NOPB are preferred.
Q: Is package compatibility critical for substitution?
A: Package compatibility affects PCB layout and assembly processes. LT3592EMSE#PBF matches the MP4033GK's 10-MSOP footprint for direct board-level substitution. Alternatives like LM3402HVMM/NOPB (8-VSSOP), LT3477EUF#PBF (20-QFN), and others require PCB redesign. Evaluate layout constraints before selecting non-matching packages.
Q: What does MSL-1 versus MSL-3 rating mean for component handling?
A: MSL-1 (Unlimited) devices like LT3592EMSE#PBF require no special moisture control during storage and assembly. MSL-3 (168 Hours) devices like IS31BL3508A-STLS2-TR must be used within 168 hours of package opening or require baking to remove absorbed moisture. For high-volume production, MSL-1 devices reduce process complexity.
Q: Can LT3477EUF#PBF replace MP4033GK despite different topologies?
A: LT3477EUF#PBF supports Flyback topology matching the MP4033GK, plus additional topologies (SEPIC, Buck, Boost). The 2.5V-25V supply range covers the MP4033GK window, and PWM dimming is supported. The 20-QFN package requires significant PCB redesign. This substitute is suitable for new designs requiring topology flexibility but not for direct board-level replacement.
Q: Which substitute offers the best inventory availability?
A: LM3402HVMM/NOPB has the highest inventory at 16,300 units. LT3592EMSE#PBF (4,800 units) and LTC3490ES8#PBF (3,600 units) provide strong availability. IS31BL3508A-STLS2-TR (6,765 units) and MCP1643-I/MC (2,100 units) offer moderate stock levels. Verify current inventory with suppliers before design commitment.
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