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MIC2289-24BML-TR Equivalent & Substitute Parts
Part Overview
The MIC2289-24BML-TR is an LED Driver IC from Microchip Technology designed for step-up (boost) DC-DC regulation with PWM dimming capability. This device delivers 750mA switch current and operates across a 2.5V to 10V supply range, making it suitable for backlight applications. The part is currently discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components that maintain functional compatibility while meeting current design requirements.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | MIC2289-24BML-TR |
| Manufacturer | Microchip Technology |
| Category | Power Management (PMIC) |
| Type | DC DC Regulator |
| Topology | Step-Up (Boost) |
| Voltage Supply Range | 2.5V to 10V |
| Output Voltage | 24V |
| Current Output / Channel | 750mA (Switch) |
| Frequency | 1.2MHz |
| Dimming | Analog, PWM |
| Package / Case | 8-VFDFN Exposed Pad, 8-MLF® (2x2) |
| Operating Temperature | -40°C to 125°C (TJ) |
| RoHS Status | RoHS non-compliant |
| Product Status | Discontinued at DiGi Electronics |
Substitute Part Grouping Explanation
Substitution for the MIC2289-24BML-TR is determined by the following critical parameters:
Primary Matching Criteria:
- Topology: Step-Up (Boost) DC-DC Regulator
- Output Voltage: 24V (or compatible range)
- Current Capability: 750mA switch current (or higher)
- Dimming Support: Analog and/or PWM capability
- Supply Voltage Range: Minimum 2.5V input support
- Package Compatibility: Surface mount with thermal management
Substitution Categories:
Category 1: Direct Parametric Equivalents (Microchip Technology) Parts that maintain identical electrical specifications and package form factor with improved product status and compliance.
Category 2: Manufacturer Recommended Alternatives (Multi-Source) Parts from alternative manufacturers that meet core functional requirements with trade-offs in package size, current rating, or supply voltage range.
Parameter Comparison
| Parameter | MIC2289-24BML-TR | MIC2287-24YML-TR | MIC2289-24YML-TR | AP3019AKTR-G1 | AP5726WUG-7 | BD6072HFN-TR | IS31BL3508A-STLS2-TR | LM3530UME-25A/NOPB | LM3565TLX/NOPB | LM3642TLX/NOPB | LT3474IFE#TRPBF |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Microchip | Microchip | Microchip | Diodes Inc. | Diodes Inc. | Rohm Semi. | Lumissil | Texas Inst. | Texas Inst. | Texas Inst. | Analog Dev. |
| Topology | Step-Up | Step-Up | Step-Up | Step-Up | Step-Up | Step-Up | Step-Up | Step-Up | Step-Up | Step-Up | Step-Down |
| Supply Voltage (Min) | 2.5V | 2.5V | 2.5V | 2.5V | 2.7V | 2.7V | 2.7V | 2.7V | 2.5V | 2.5V | 4.6V |
| Supply Voltage (Max) | 10V | 10V | 10V | 16V | 5.5V | 5.5V | 5.5V | 5.5V | 5.5V | 5.5V | 36V |
| Output Voltage | 24V | 24V | 24V | — | — | 18V | — | 40V | 5.5V–8.5V | 5V | — |
| Current Output (Switch) | 750mA | 750mA | 750mA | 550mA | 750mA | 35mA | 1.6A | 30mA | 930mA (Flash) | 1.5A (Flash) | 1A |
| Frequency | 1.2MHz | 1.2MHz | 1.2MHz | 1.2MHz | 1.2MHz | 1MHz | 1MHz | 500kHz | 4MHz | 4MHz | 200kHz–2MHz |
| Dimming | Analog, PWM | Analog, PWM | Analog, PWM | PWM | PWM | PWM | Analog, PWM | PWM | PWM | I2C | PWM |
| Package | 8-MLF® (2x2) | 8-MLF® (2x2) | 8-MLF® (2x2) | SOT-23-6 | TSOT-23-6 | 8-HSON | SOT-23-6 | 12-DSBGA | 16-DSBGA | 9-DSBGA | 16-TSSOP-EP |
| Operating Temp | -40°C to 125°C (TJ) | -40°C to 125°C (TJ) | -40°C to 125°C (TJ) | -40°C to 85°C (TA) | -40°C to 85°C (TA) | -30°C to 85°C (TA) | -40°C to 85°C (TA) | -40°C to 85°C (TA) | -30°C to 85°C (TA) | -40°C to 85°C (TA) | -40°C to 125°C (TA) |
| RoHS Status | Non-compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Discontinued | Active | Active | Active | Active | Not For New Designs | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
Tier 1: Direct Replacement (Highest Compatibility)
MIC2289-24YML-TR and MIC2287-24YML-TR are the preferred substitutes. Both maintain identical electrical specifications (2.5V–10V input, 24V output, 750mA switch current, 1.2MHz operation, analog and PWM dimming). MIC2289-24YML-TR is available in higher inventory (5400 pcs) with active product status and ROHS3 compliance. MIC2287-24YML-TR offers the same performance with active status and expanded application support (backlight and camera flash). Both use the same 8-MLF® (2x2) package, requiring no PCB redesign.
Tier 2: Functional Equivalents with Package Trade-offs
AP5726WUG-7 (Diodes Incorporated) matches the 750mA current rating and 1.2MHz frequency with PWM dimming. However, the supply voltage range is restricted to 2.7V–5.5V (versus 2.5V–10V), and the package changes to TSOT-23-6. This part is suitable only if the application operates within the narrower supply range.
IS31BL3508A-STLS2-TR (Lumissil Microsystems) provides higher current capability (1.6A) with analog and PWM dimming support. Supply voltage is limited to 2.7V–5.5V, and the package is SOT-23-6. This option accommodates higher current demands within restricted supply parameters.
Tier 3: Specialized Alternatives (Application-Specific)
LM3565TLX/NOPB and LM3642TLX/NOPB (Texas Instruments) are optimized for camera flash applications with higher current ratings (930mA and 1.5A respectively). These parts operate at 4MHz and use DSBGA packages. They are not recommended for standard backlight applications due to different output voltage specifications and package complexity.
LT3474IFE#TRPBF (Analog Devices) uses step-down topology rather than step-up, making it unsuitable for applications requiring boost conversion from 2.5V–10V input to 24V output.
BD6072HFN-TR (Rohm Semiconductor) is marked "Not For New Designs" and provides only 35mA output current, insufficient for the 750mA requirement.
Compliance and Availability:
All recommended Tier 1 and Tier 2 alternatives are ROHS3 compliant with active product status. Inventory availability is confirmed for all active parts. The original MIC2289-24BML-TR is RoHS non-compliant and discontinued, making migration to compliant alternatives necessary for new designs.
Frequently Asked Questions (FAQ)
Q: Can MIC2289-24YML-TR directly replace MIC2289-24BML-TR without PCB modification?
A: Yes. Both parts use the 8-MLF® (2x2) package with identical pinout and electrical specifications. No PCB redesign is required. The primary difference is product status (active versus discontinued) and RoHS compliance (ROHS3 versus non-compliant).
Q: What is the key difference between MIC2289-24YML-TR and MIC2287-24YML-TR?
A: Both parts are parametrically equivalent with identical electrical performance. MIC2287-24YML-TR supports additional camera flash applications. MIC2289-24YML-TR has higher inventory availability (5400 pcs versus 765 pcs). Selection depends on application scope and supply chain requirements.
Q: Why is AP5726WUG-7 not a direct replacement despite matching current and frequency specifications?
A: AP5726WUG-7 restricts the supply voltage range to 2.7V–5.5V, whereas the original part operates from 2.5V–10V. If your application requires operation below 2.7V input or above 5.5V input, this part is incompatible. Additionally, the package changes from 8-MLF® to TSOT-23-6, requiring PCB layout modification.
Q: Is IS31BL3508A-STLS2-TR suitable for applications requiring exactly 750mA output?
A: IS31BL3508A-STLS2-TR provides 1.6A switch current, exceeding the 750mA requirement. This higher rating does not prevent use in 750mA applications; however, the supply voltage range is restricted to 2.7V–5.5V. Verify that your application operates within this narrower input range before selection.
Q: What does "Not For New Designs" mean for BD6072HFN-TR?
A: This designation indicates the manufacturer no longer recommends this part for new product development. While existing inventory may be available, long-term supply is not guaranteed. This part should not be selected for new designs.
Q: Can LT3474IFE#TRPBF replace the MIC2289-24BML-TR?
A: No. LT3474IFE#TRPBF uses step-down (buck) topology, whereas the original part uses step-up (boost) topology. Buck converters cannot generate 24V output from a 2.5V–10V input range. This part is fundamentally incompatible with the application.
Q: How do I verify package compatibility when switching from 8-MLF® to SOT-23-6?
A: Package changes require PCB redesign. The 8-MLF® (2x2) is a 2mm × 2mm footprint, while SOT-23-6 is a larger 3mm × 3mm footprint. Verify that your PCB layout has sufficient space for the larger package and that thermal management requirements are met. Consult the respective datasheets for detailed footprint specifications.
Q: Are all recommended substitutes RoHS3 compliant?
A: All Tier 1 and Tier 2 recommended alternatives are ROHS3 compliant. The original MIC2289-24BML-TR is RoHS non-compliant. If RoHS compliance is a design requirement, select from the active, compliant alternatives listed in Tier 1 or Tier 2.
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