Request Quote
(Ships tomorrow)
MPQ2483ADQ-LF-Z LED Driver IC Equivalent & Substitute Parts
Part Overview
The MPQ2483ADQ-LF-Z is an active LED driver regulator 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-down (buck) and step-up (boost) topology, delivering 2.5A output current with analog and PWM dimming capabilities. The part is designed for backlight applications and operates across a -40°C to 125°C temperature range with automotive-grade qualification.
Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part's specifications, enabling direct or near-direct replacement in circuit designs. Substitution becomes necessary due to inventory constraints, supply chain discontinuity, or design flexibility requirements across manufacturing batches.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | MPQ2483ADQ-LF-Z |
| Manufacturer | Monolithic Power Systems Inc. |
| Product Category | Power Management (PMIC) |
| Type | DC DC Regulator |
| Topology | Step-Down (Buck), Step-Up (Boost) |
| Number of Outputs | 1 |
| Voltage Supply Range | 4.5V to 55V |
| Current Output / Channel | 2.5A |
| Switching Frequency | 250kHz |
| Dimming Capability | Analog, PWM |
| Operating Temperature | -40°C to 125°C (TJ) |
| Package / Case | 10-VFDFN Exposed Pad |
| Supplier Device Package | 10-QFN (3x3) |
| Grade | Automotive |
| RoHS Status | ROHS3 Compliant |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitute parts for the MPQ2483ADQ-LF-Z are categorized based on strict alignment with the following critical parameters:
Primary Substitution Criteria:
- Topology: Step-Down (Buck), Step-Up (Boost)
- Number of Outputs: 1
- Voltage Supply Range: Minimum 4.5V, Maximum 55V
- Current Output / Channel: 2.5A or higher
- Dimming: Analog, PWM capability
- Operating Temperature: -40°C to 125°C or wider
- Package Type: Surface Mount with exposed pad
- Product Status: Active
- RoHS Compliance: ROHS3 Compliant
Parametric Equivalents (MPQ2483ADQ-AEC1-LF-P, MPQ2483ADQ-LF-P) share identical electrical specifications and differ only in packaging format (Tape & Reel) and qualification level (AEC-Q100 for the AEC1 variant). These represent direct substitutes within the same product family.
Manufacturer Recommended Substitutes (AP8803WTG-7, LED5000PHR, LT3478IFE-1#PBF, LT3518EUF#TRPBF, LT3518HUF#PBF, LTC3215EDD#PBF, MCP1662T-E/OT, MIC2289-24YD6-TR) are cross-manufacturer alternatives that meet the core functional requirements. These parts maintain compatibility with backlight applications and automotive temperature ranges, though individual specifications may vary in frequency, current capacity, or topology configuration.
Parameter Comparison
| Parameter | MPQ2483ADQ-LF-Z | MPQ2483ADQ-AEC1-LF-P | MPQ2483ADQ-LF-P | AP8803WTG-7 | LED5000PHR | LT3478IFE-1#PBF | LT3518EUF#TRPBF | LT3518HUF#PBF |
|---|---|---|---|---|---|---|---|---|
| Manufacturer | Monolithic Power Systems Inc. | Monolithic Power Systems | Monolithic Power Systems Inc. | Diodes Incorporated | STMicroelectronics | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. |
| 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 |
| Topology | Step-Down (Buck), Step-Up (Boost) | Step-Down (Buck), Step-Up (Boost) | Step-Down (Buck), Step-Up (Boost) | Step-Down (Buck) | Step-Down (Buck), Step-Up (Boost) | Step-Down (Buck), Step-Up (Boost) | Step-Down (Buck), Step-Up (Boost) | Step-Down (Buck), Step-Up (Boost) |
| Number of Outputs | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Voltage Supply (Min) | 4.5V | 4.5V | 4.5V | 8V | 5.5V | 2.8V | 3V | 3V |
| Voltage Supply (Max) | 55V | 55V | 55V | 30V | 48V | 36V | 30V | 30V |
| Current Output / Channel | 2.5A | 2.5A | 2.5A | 1A (Switch) | 3A | 4.5A (Switch) | 2.3A (Switch) | 2.3A (Switch) |
| Switching Frequency | 250kHz | 250kHz | 250kHz | 700kHz | 850kHz | 200kHz ~ 2.25MHz | 250kHz ~ 2.5MHz | 250kHz ~ 2.5MHz |
| Dimming | Analog, PWM | Analog, PWM | Analog, PWM | Analog, PWM | PWM | PWM | Analog, PWM | Analog, PWM |
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 150°C (TJ) |
| Package / Case | 10-VFDFN Exposed Pad | 10-VFDFN Exposed Pad | 10-VFDFN Exposed Pad | SOT-23-5 Thin, TSOT-23-5 | 8-SOIC (0.154", 3.90mm Width) Exposed Pad | 16-TSSOP (0.173", 4.40mm Width) Exposed Pad | 16-WQFN Exposed Pad | 16-WQFN Exposed Pad |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Active | Active | Active | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
Parametric Equivalents within MPQ2483 Family:
MPQ2483ADQ-AEC1-LF-P and MPQ2483ADQ-LF-P are direct electrical equivalents to the MPQ2483ADQ-LF-Z. The AEC1 variant includes AEC-Q100 automotive qualification, providing enhanced reliability documentation for automotive applications. Selection between these three parts depends on packaging requirements (Tape & Reel format) and qualification level needed for the end application.
Cross-Manufacturer Substitutes:
LED5000PHR (STMicroelectronics) provides higher current capacity (3A) and maintains dual topology (buck/boost) with PWM dimming, suitable for applications requiring increased output current within the 5.5V to 48V supply range.
LT3478IFE-1#PBF (Analog Devices Inc.) offers the highest current capacity (4.5A) and widest frequency range (200kHz to 2.25MHz) with extended voltage output specification (42V). This part accommodates designs requiring higher current delivery or specific frequency tuning.
LT3518EUF#TRPBF and LT3518HUF#PBF (Analog Devices Inc.) provide comparable current (2.3A) and dual topology with analog and PWM dimming. The HUF variant extends operating temperature to 150°C, suitable for high-temperature automotive environments.
All substitute parts maintain ROHS3 compliance, active product status, and automotive-grade operating temperature ranges. Package differences require PCB layout modification; direct footprint compatibility exists only within the MPQ2483 family.
Frequently Asked Questions (FAQ)
Q: Can MPQ2483ADQ-AEC1-LF-P directly replace MPQ2483ADQ-LF-Z without PCB modification?
A: Yes. Both parts share identical electrical specifications, topology, current rating (2.5A), voltage range (4.5V to 55V), and package type (10-VFDFN Exposed Pad). The AEC1 variant adds AEC-Q100 qualification. No PCB layout changes are required.
Q: What is the primary difference between MPQ2483ADQ-LF-P and MPQ2483ADQ-AEC1-LF-P?
A: The AEC1 variant includes AEC-Q100 automotive qualification certification. Electrical performance and package specifications are identical. Selection depends on whether enhanced automotive reliability documentation is required for the application.
Q: Can LED5000PHR replace MPQ2483ADQ-LF-Z in a 2.5A backlight circuit?
A: LED5000PHR is functionally compatible but requires PCB redesign. It delivers 3A output current (exceeding the 2.5A requirement), maintains buck/boost topology and PWM dimming, but operates within a narrower supply range (5.5V to 48V versus 4.5V to 55V). Package differs (8-HSOP versus 10-QFN). Verify supply voltage compatibility before substitution.
Q: What are the key limitations of AP8803WTG-7 as a substitute?
A: AP8803WTG-7 is a step-down (buck) only topology, lacking the step-up (boost) capability of the MPQ2483ADQ-LF-Z. Output current is limited to 1A, insufficient for 2.5A applications. Supply voltage range is narrower (8V to 30V). This part is suitable only for buck-only designs with lower current requirements.
Q: Does LT3518EUF#TRPBF require circuit redesign for substitution?
A: Yes. While LT3518EUF#TRPBF maintains dual topology, analog/PWM dimming, and comparable current (2.3A), the package differs significantly (16-QFN versus 10-QFN). PCB footprint, trace routing, and thermal management layout require modification. Verify frequency range compatibility (250kHz to 2.5MHz) with existing circuit design.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All listed substitute parts carry ROHS3 Compliant status, meeting environmental and hazardous substance restrictions equivalent to the main part MPQ2483ADQ-LF-Z.
Q: Which substitute offers the widest operating temperature range?
A: LT3518HUF#PBF extends operating temperature to -40°C to 150°C (TJ), compared to the standard -40°C to 125°C range of the MPQ2483ADQ-LF-Z. This variant is recommended for high-temperature automotive environments.
Q: Can I use LTC3215EDD#PBF as a substitute for backlight applications?
A: LTC3215EDD#PBF is not recommended as a direct substitute. This part uses switched capacitor (charge pump) topology rather than buck/boost regulation, operates at lower current (700mA), and requires a narrower supply range (2.9V to 4.4V). It is suitable only for low-power backlight designs with specific voltage constraints.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts