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MP23701GQEU-Z LED Driver IC Equivalent & Substitute Parts
Part Overview
The MP23701GQEU-Z is an active LED Driver IC manufactured by Monolithic Power Systems Inc., designed for single-output DC-DC step-down (buck) regulation with analog dimming capability. This component integrates an internal switch and operates across a 4.2V to 24V supply range with 2A output current capacity in an 8-UTQFN surface mount package. The part is RoHS3 compliant and maintains unlimited moisture sensitivity rating (MSL 1).
Equivalent and substitute parts are identified based on matching functional topology, output configuration, dimming methodology, and thermal operating range. Substitution becomes necessary when the primary part reaches end-of-life status, inventory constraints occur, or alternative sourcing is required for supply chain optimization.
Substiute Parts
Key Parameters
| Parameter | MP23701GQEU-Z |
|---|---|
| Manufacturer | Monolithic Power Systems Inc. |
| Category | Power Management (PMIC) |
| Type | DC DC Regulator |
| Topology | Step-Down (Buck) |
| Number of Outputs | 1 |
| Internal Switch(s) | Yes |
| Voltage - Supply (Min) | 4.2V |
| Voltage - Supply (Max) | 24V |
| Voltage - Output | 0.1V |
| Current - Output / Channel | 2A |
| Frequency | 1.5MHz |
| Dimming | Analog |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | 8-UDFN |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitution logic for the MP23701GQEU-Z is based on the following critical parameters that define functional equivalence:
Primary Matching Criteria:
- Topology: Step-Down (Buck) configuration with internal switch
- Number of Outputs: Single output only
- Output Current Capacity: Minimum 1.5A (MP23701GQEU-Z provides 2A)
- Supply Voltage Range: Overlap with 4.2V to 24V input specification
- Dimming Capability: Analog dimming support (PWM-only alternatives noted as secondary options)
- Operating Temperature: Minimum -40°C to 125°C junction or ambient rating
- Mounting Type: Surface mount packages only
- Compliance: RoHS3 compliant, REACH unaffected
Secondary Considerations:
- Package form factor compatibility with PCB layout constraints
- Frequency operation within acceptable range (700kHz to 1.6MHz acceptable)
- MSL rating of 1 or 3 (168 Hours) acceptable for standard applications
Substitute parts are grouped into two categories: Direct Functional Equivalents (matching analog dimming and full parameter range) and Compatible Alternatives (matching topology and core functionality with PWM dimming or reduced current capacity).
Parameter Comparison
| Parameter | MP23701GQEU-Z | AL8860MP-13 | AP8803WTG-7 | IS31LT3360-SDLS3-TR | LM3402HVMM/NOPB | LM3404MRX/NOPB | LM3405XMKX/NOPB | LT1937ES5#TRPBF | LT3474IFE#TRPBF |
|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Monolithic Power Systems Inc. | Diodes Incorporated | Diodes Incorporated | Lumissil Microsystems | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices Inc. | Analog Devices Inc. |
| Topology | Step-Down (Buck) | Step-Down (Buck) | Step-Down (Buck) | Step-Down (Buck) | Step-Down (Buck) | Step-Down (Buck) | Step-Down (Buck) | Step-Up (Boost) | Step-Down (Buck) |
| Number of Outputs | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Internal Switch(s) | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Voltage - Supply (Min) | 4.2V | 4.5V | 8V | 6V | 6V | 6V | 3V | 2.5V | 3.5V |
| Voltage - Supply (Max) | 24V | 40V | 30V | 40V | 75V | 42V | 15V | 10V | 36V |
| Current - Output / Channel | 2A | 1.5A | 1A (Switch) | 1.2A (Switch) | 500mA | 1A | 1A | 320mA (Switch) | 1A |
| Frequency | 1.5MHz | 1MHz | 700kHz | 1MHz | 1MHz | 1MHz | 1.6MHz | 1.2MHz | 200kHz ~ 2MHz |
| Dimming | Analog | Analog, PWM | Analog, PWM | Analog, PWM | PWM | PWM | PWM | Analog, PWM | PWM |
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 105°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 105°C (TA) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 85°C (TA) | -40°C ~ 125°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 8-UDFN | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad | SOT-23-5 Thin, TSOT-23-5 | SOT-89-5/6 | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-PowerSOIC (0.154", 3.90mm Width) | SOT-23-6 Thin, TSOT-23-6 | SOT-23-5 Thin, TSOT-23-5 | 16-TSSOP (0.173", 4.40mm Width) Exposed Pad |
| 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) | 3 (168 Hours) | 1 (Unlimited) | 3 (168 Hours) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Active | Active | Active | Active | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
Direct Functional Equivalents (Preferred Substitutes):
The AL8860MP-13 (Diodes Incorporated) provides the closest functional match to the MP23701GQEU-Z. Both devices support analog and PWM dimming, operate across overlapping supply voltage ranges (4.5V to 40V vs. 4.2V to 24V), and maintain RoHS3 compliance with MSL 1 rating. The AL8860MP-13 delivers 1.5A output current, which is 75% of the MP23701GQEU-Z specification. This part is suitable for applications where the full 2A capacity is not required or where current derating is acceptable.
The AP8803WTG-7 (Diodes Incorporated) operates across 8V to 30V supply range with 1A output current and supports both analog and PWM dimming. Operating temperature range extends to -40°C to 125°C, matching the MP23701GQEU-Z. This device is appropriate for lower-current LED driver applications within the specified voltage window.
Compatible Alternatives (Secondary Substitutes):
The LM3404MRX/NOPB (Texas Instruments) is a PWM-only LED driver with 1A output current, 6V to 42V supply range, and -40°C to 125°C operating temperature. This part maintains RoHS3 compliance and automotive-grade qualification. Substitution requires confirmation that PWM dimming is functionally equivalent to analog dimming in the target application.
The LT3474IFE#TRPBF (Analog Devices Inc.) operates across 3.5V to 36V with 1A output current and programmable frequency (200kHz to 2MHz). This device supports PWM dimming only and is rated for -40°C to 125°C ambient temperature. The automotive-grade qualification and RoHS3 compliance make this suitable for demanding environments.
The LM3405XMKX/NOPB (Texas Instruments) provides 1A output current across 3V to 15V supply range with PWM dimming and 1.6MHz switching frequency. Operating temperature extends to -40°C to 125°C. This part is appropriate for lower-voltage LED driver applications.
Limited Compatibility Options:
The LM3402HVMM/NOPB (Texas Instruments) and LM3402HVMRX/NOPB (National Semiconductor) deliver 500mA output current with PWM dimming across 6V to 75V supply range. These parts are suitable only for applications requiring reduced current capacity.
The IS31LT3360-SDLS3-TR (Lumissil Microsystems) provides 1.2A output current with analog and PWM dimming support across 6V to 40V supply range. MSL 3 rating (168 Hours) requires controlled moisture exposure during storage and handling.
The LT1937ES5#TRPBF (Analog Devices Inc.) employs step-up (boost) topology rather than step-down, making it unsuitable as a direct substitute for buck-topology applications. This device is listed for reference only.
Compliance and Certification Status:
All substitute parts maintain RoHS3 compliance and REACH unaffected status, matching the MP23701GQEU-Z regulatory requirements. Parts designated with automotive-grade qualification (LM3404MRX/NOPB, LT3474IFE#TRPBF) are suitable for extended temperature and reliability requirements.
Frequently Asked Questions (FAQ)
Q: Can the AL8860MP-13 directly replace the MP23701GQEU-Z in all applications?
A: The AL8860MP-13 is functionally compatible for applications where 1.5A output current is sufficient. The MP23701GQEU-Z provides 2A capacity; therefore, applications requiring the full 2A specification require verification that the AL8860MP-13 current rating meets design requirements. Both devices support analog and PWM dimming, operate across overlapping supply ranges, and maintain identical RoHS3 and MSL compliance.
Q: What is the primary difference between analog and PWM dimming in LED driver selection?
A: The MP23701GQEU-Z supports analog dimming, which adjusts LED brightness by modulating the output voltage or current through an analog control signal. PWM-only alternatives (LM3402HVMM/NOPB, LM3404MRX/NOPB, LM3405XMKX/NOPB) adjust brightness through pulse-width modulation of the switching frequency. Substitution of PWM-only devices requires confirmation that the application circuit and control methodology support PWM dimming.
Q: Are package differences between the MP23701GQEU-Z (8-UDFN) and substitute parts significant?
A: Yes. The MP23701GQEU-Z uses 8-UDFN packaging (1.5x2.5mm). Substitute parts employ different packages: AL8860MP-13 uses 8-MSOP-EP, AP8803WTG-7 uses TSOT-23-5, IS31LT3360-SDLS3-TR uses SOT-89-5, and LT3474IFE#TRPBF uses 16-TSSOP-EP. PCB layout modifications are required for package substitution. Verify footprint compatibility and thermal management requirements before design implementation.
Q: Which substitute part is recommended for automotive applications?
A: The LM3404MRX/NOPB and LT3474IFE#TRPBF both carry automotive-grade qualification. The LM3404MRX/NOPB provides 1A output current across 6V to 42V supply range with -40°C to 125°C operating temperature and MSL 3 rating. The LT3474IFE#TRPBF delivers 1A output current across 3.5V to 36V with programmable frequency and -40°C to 125°C ambient temperature rating. Both maintain RoHS3 compliance and REACH unaffected status.
Q: What is the significance of MSL (Moisture Sensitivity Level) rating in part selection?
A: MSL 1 (Unlimited) indicates the component can be stored indefinitely without moisture control. MSL 3 (168 Hours) requires controlled storage conditions and limits floor-life exposure to 168 hours after moisture barrier removal. The MP23701GQEU-Z carries MSL 1 rating. Substitute parts with MSL 1 (AL8860MP-13, AP8803WTG-7, LM3402HVMM/NOPB, LM3405XMKX/NOPB, LT1937ES5#TRPBF, LT3474IFE#TRPBF) require no special moisture handling. Parts with MSL 3 (IS31LT3360-SDLS3-TR, LM3404MRX/NOPB) require bake-out procedures if floor-life is exceeded.
Q: Can the LT1937ES5#TRPBF substitute for the MP23701GQEU-Z?
A: No. The LT1937ES5#TRPBF employs step-up (boost) topology, while the MP23701GQEU-Z uses step-down (buck) topology. These topologies are fundamentally different in circuit operation and output voltage characteristics. Boost converters increase voltage from input to output, while buck converters decrease voltage. This part is not suitable as a substitute.
Q: What output current capacity is acceptable when substituting the MP23701GQEU-Z?
A: The MP23701GQEU-Z provides 2A output current. Substitute parts with 1.5A (AL8860MP-13) or 1A (AP8803WTG-7, LM3404MRX/NOPB, LM3405XMKX/NOPB, LT3474IFE#TRPBF) capacity are acceptable only if the application design confirms that reduced current capacity meets LED load requirements. Parts with 500mA (LM3402HVMM/NOPB, LM3402HVMRX/NOPB) or 320mA (LT1937ES5#TRPBF) are suitable only for low-power LED applications.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All substitute parts listed maintain RoHS3 compliance and REACH unaffected status, matching the MP23701GQEU-Z regulatory requirements. This ensures compatibility with environmental and hazardous substance restrictions across global markets.
Q: What is the operating temperature range consideration for substitute selection?
A: The MP23701GQEU-Z operates across -40°C to 125°C junction temperature. Substitute parts with matching or superior temperature ratings include AP8803WTG-7, LM3402HVMM/NOPB, LM3404MRX/NOPB, LM3405XMKX/NOPB, and LT3474IFE#TRPBF (all -40°C to 125°C). Parts with reduced upper temperature limit (AL8860MP-13, IS31LT3360-SDLS3-TR at -40°C to 105°C, and LT1937ES5#TRPBF at -40°C to 85°C) require verification that application thermal environment does not exceed specified limits.
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