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MP24895-AGH-Z LED Driver IC Equivalent & Substitute Parts
Part Overview
The MP24895-AGH-Z is an active-status LED Driver IC manufactured by Monolithic Power Systems Inc., designed as a DC-DC Step-Down (Buck) regulator with PWM and analog dimming capability. This 1A output device operates across a 6V to 36V supply range and is housed in an 8-MSOP-EP package with exposed pad. The device is automotive-grade and ROHS3 compliant, serving applications in backlight, lighting, and signage systems.
Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges, allowing for design flexibility, supply chain optimization, or inventory management.
Substiute Parts
Key Parameters
| Parameter | MP24895-AGH-Z |
|---|---|
| Manufacturer | Monolithic Power Systems Inc. |
| Type | DC DC Regulator |
| Topology | Step-Down (Buck) |
| Number of Outputs | 1 |
| Voltage Supply Range | 6V to 36V |
| Current Output / Channel | 1A |
| Dimming | Analog, PWM |
| Internal Switch | Yes |
| Package / Case | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad |
| Operating Temperature | -40°C to 125°C (TJ) |
| Grade | Automotive |
| RoHS Status | ROHS3 Compliant |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitution eligibility for the MP24895-AGH-Z is determined by the following critical parameters:
Topology Match: All substitutes must employ Step-Down (Buck) topology with internal switching capability to maintain functional equivalence.
Output Current Capability: The main part delivers 1A output current. Substitutes with equal or greater current rating (1A minimum) are acceptable, as they provide equivalent or superior performance headroom.
Supply Voltage Range: The main part accepts 6V to 36V input. Substitutes must support this range or a range that fully encompasses it. Substitutes with narrower ranges are acceptable only if they cover the 6V to 36V window.
Dimming Capability: The main part supports both Analog and PWM dimming. Substitutes supporting PWM dimming alone are acceptable; however, loss of analog dimming capability represents a functional reduction.
Package Compatibility: The main part uses 8-MSOP-EP (0.118", 3.00mm width) with exposed pad. Substitutes in different packages (8-SOIC, 8-DFN, SOT-89-5, 16-TSSOP) require PCB layout redesign and are not pin-compatible drop-in replacements.
Automotive Grade & Temperature Range: The main part is automotive-grade with -40°C to 125°C operating range. Substitutes meeting automotive qualification and matching or exceeding this temperature range maintain design integrity for automotive applications.
Compliance: All substitutes must maintain ROHS3 compliance and active product status.
Parameter Comparison
| Parameter | MP24895-AGH-Z | HV9918K7-G | IS31LT3360-SDLS4-TR | LED2000DR | LM3404MRX/NOPB | LT3474IFE#TRPBF | LT3491ESC8#TRPBF | MAX16822BASA+ | PAM2863ECR | TPS92511DDA | TS19376CY5 RMG |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | MPS | Microchip | Lumissil | STMicroelectronics | Texas Instruments | Analog Devices | Analog Devices | Analog Devices/Maxim | Diodes Inc. | Texas Instruments | Taiwan Semiconductor |
| Topology | Step-Down (Buck) | Step-Down (Buck) | Step-Down (Buck) | Step-Down (Buck) | Step-Down (Buck) | Step-Down (Buck) | Step-Up (Boost) | Step-Down (Buck) | Step-Down (Buck) | Step-Down (Buck) | Step-Down (Buck) |
| Voltage Supply (Min) | 6V | 4.5V | 6V | 3V | 6V | 4.6V | 2.5V | 6.5V | 4.5V | 4.5V | 8V |
| Voltage Supply (Max) | 36V | 40V | 40V | 18V | 42V | 36V | 12V | 65V | 40V | 65V | 32V |
| Current Output / Channel | 1A | 30mA | 1.2A (Switch) | 3A | 1A | 1A | 350mA (Switch) | 350mA | 2A | 500mA | 1A (Switch) |
| Dimming | Analog, PWM | Analog, PWM | Analog, PWM | PWM | PWM | PWM | PWM | PWM | Analog, PWM | Analog, PWM | PWM |
| Operating Temperature | -40°C to 125°C (TJ) | -40°C to 125°C (TA) | -40°C to 125°C (TA) | -40°C to 150°C (TJ) | -40°C to 125°C (TJ) | -40°C to 125°C (TA) | -40°C to 85°C (TA) | -40°C to 125°C (TA) | -40°C to 85°C (TA) | -40°C to 125°C (TA) | -40°C to 125°C (TJ) |
| Grade | Automotive | — | Automotive | — | Automotive | Automotive | — | — | — | — | — |
| Package / Case | 8-TSSOP, 8-MSOP (0.118", 3.00mm) Exposed Pad | 8-WDFN Exposed Pad | SOT-89-5/6 | 8-SOIC (0.154", 3.90mm) | 8-PowerSOIC (0.154", 3.90mm) | 16-TSSOP (0.173", 4.40mm) Exposed Pad | 8-VFSOP (0.049", 1.25mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) Exposed Pad | 8-PowerSOIC (0.154", 3.90mm) | SOT-89-5/6 |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | 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 | Active | Active | Active |
Engineering Selection Recommendations
Direct Functional Equivalents (Topology, Current, Voltage, Dimming Match):
IS31LT3360-SDLS4-TR and LM3404MRX/NOPB provide the closest functional alignment with MP24895-AGH-Z. Both maintain Step-Down topology, 1A+ output current, 6V+ minimum supply voltage, and automotive-grade qualification. IS31LT3360-SDLS4-TR extends to 40V maximum supply and includes analog dimming. LM3404MRX/NOPB reaches 42V maximum supply. Both require package redesign due to different footprints (SOT-89-5 and 8-PowerSOIC respectively).
Enhanced Current Capability Substitutes:
PAM2863ECR (2A) and LED2000DR (3A) provide superior current headroom for applications requiring higher output capacity. PAM2863ECR maintains 4.5V to 40V supply range and dual dimming modes. LED2000DR operates at lower minimum voltage (3V) but maximum supply is limited to 18V, making it unsuitable for 36V applications. Both require PCB layout changes.
Reduced Current Substitutes (Not Recommended for 1A Applications):
HV9918K7-G (30mA), MAX16822BASA+ (350mA), and TPS92511DDA (500mA) deliver insufficient output current for applications requiring full 1A capacity. These are suitable only for reduced-load scenarios or as alternatives in lower-power LED driver applications.
Topology Mismatch (Not Recommended):
LT3491ESC8#TRPBF employs Step-Up (Boost) topology, fundamentally different from the Step-Down architecture of MP24895-AGH-Z. This device is not functionally equivalent and requires complete circuit redesign.
Temperature Range Limitations:
LT3491ESC8#TRPBF (-40°C to 85°C), PAM2863ECR (-40°C to 85°C), and LT3474IFE#TRPBF (-40°C to 125°C with automotive grade) have reduced or non-automotive temperature specifications. Substitution in automotive applications requires thermal analysis and design validation.
Recommended Substitutes for Pin-Compatible or Near-Compatible Designs:
For applications where package change is acceptable, IS31LT3360-SDLS4-TR and LM3404MRX/NOPB are preferred. Both maintain automotive qualification, 1A output, and full supply voltage range compatibility. For applications requiring higher current capacity without package constraints, PAM2863ECR (2A) is suitable.
Frequently Asked Questions (FAQ)
Q: Can HV9918K7-G replace MP24895-AGH-Z in a 1A LED driver application?
A: No. HV9918K7-G is rated for 30mA output current, insufficient for 1A applications. It is suitable only for low-power LED signage or indicator lighting requiring less than 50mA.
Q: Is LT3491ESC8#TRPBF a valid substitute?
A: No. LT3491ESC8#TRPBF uses Step-Up (Boost) topology, whereas MP24895-AGH-Z uses Step-Down (Buck) topology. These topologies are fundamentally different and require distinct circuit designs. Substitution would require complete schematic and layout redesign.
Q: Can LED2000DR be used in place of MP24895-AGH-Z?
A: LED2000DR is not recommended for applications requiring the full 6V to 36V input range. While it provides 3A output current (exceeding MP24895-AGH-Z), its maximum supply voltage is limited to 18V. Applications operating above 18V input will exceed device ratings. LED2000DR is suitable only for designs operating within 3V to 18V supply range.
Q: What is the impact of package differences between MP24895-AGH-Z and substitute parts?
A: MP24895-AGH-Z uses 8-MSOP-EP (0.118" width). Substitutes employ different packages: 8-WDFN, SOT-89-5, 8-SOIC, 16-TSSOP, or 8-VFSOP. These are not pin-compatible. PCB layout redesign, trace routing changes, and thermal management modifications are required. Footprint conversion is not a simple swap.
Q: Which substitute maintains automotive-grade qualification?
A: IS31LT3360-SDLS4-TR and LM3404MRX/NOPB both carry automotive-grade designation. LT3474IFE#TRPBF also includes automotive qualification. Other substitutes lack automotive grading and are unsuitable for automotive applications unless design validation confirms compliance with automotive standards.
Q: Does PAM2863ECR support both analog and PWM dimming like MP24895-AGH-Z?
A: Yes. PAM2863ECR supports both Analog and PWM dimming modes, matching MP24895-AGH-Z functionality. However, operating temperature is limited to -40°C to 85°C, below the -40°C to 125°C range of the main part.
Q: Can TPS92511DDA be used as a direct replacement?
A: No. TPS92511DDA is rated for 500mA output current, below the 1A requirement. It is suitable for reduced-load applications only. Additionally, it lacks automotive grading.
Q: What is the minimum output current requirement for a valid substitute?
A: Substitutes must deliver at least 1A output current to maintain functional equivalence with MP24895-AGH-Z. Devices rated below 1A are not suitable for applications requiring full 1A capacity.
Q: Are all substitutes ROHS3 compliant?
A: Yes. All listed substitutes maintain ROHS3 compliance, matching the environmental compliance status of MP24895-AGH-Z.
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