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MIC39501-2.5BU TR Linear Voltage Regulator
Part Overview
The MIC39501-2.5BU TR is a linear voltage regulator IC from Microchip Technology designed for positive fixed output applications. This device delivers 5A output current at a fixed 2.5V output voltage and is housed in a TO-263-5 surface mount package. The part is currently classified as obsolete, making identification of suitable alternatives essential for ongoing production and maintenance applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Technology |
| Category | Power Management (PMIC) |
| Output Configuration | Positive |
| Output Type | Fixed |
| Voltage - Output (Min/Fixed) | 2.5V |
| Voltage - Input (Max) | 16V |
| Current - Output | 5A |
| Voltage Dropout (Max) | 0.575V @ 5A |
| Control Features | Enable |
| Protection Features | Over Current, Over Temperature, Reverse Polarity |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
| Package / Case | TO-263-6, D2PAK (5 Leads + Tab), TO-263BA |
| Supplier Device Package | TO-263-5 |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
Substitute Part Grouping Explanation
Substitution of the MIC39501-2.5BU TR is determined by strict equivalence across the following critical parameters:
- Output voltage specification: 2.5V fixed
- Output current capability: 5A
- Input voltage range: Maximum 16V
- Voltage dropout characteristics: 0.575V @ 5A
- Package type: TO-263-5 surface mount
- Control and protection features: Enable function with Over Current, Over Temperature, and Reverse Polarity protection
- Operating temperature range: -40°C ~ 125°C
- Manufacturer: Microchip Technology
The MIC39501-2.5WU-TR meets all these electrical and mechanical specifications, establishing it as a direct substitute within the MIC39501 base product family.
Parameter Comparison
| Parameter | MIC39501-2.5BU TR (Main) | MIC39501-2.5WU-TR (Substitute) |
|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology |
| Output Configuration | Positive | Positive |
| Output Type | Fixed | Fixed |
| Voltage - Output (Min/Fixed) | 2.5V | 2.5V |
| Voltage - Input (Max) | 16V | 16V |
| Current - Output | 5A | 5A |
| Voltage Dropout (Max) | 0.575V @ 5A | 0.575V @ 5A |
| Control Features | Enable | Enable |
| Protection Features | Over Current, Over Temperature, Reverse Polarity | Over Current, Over Temperature, Reverse Polarity |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | TO-263-6, D2PAK (5 Leads + Tab), TO-263BA | TO-263-6, D2PAK (5 Leads + Tab), TO-263BA |
| Supplier Device Package | TO-263-5 | TO-263-5 |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) | 3 (168 Hours) |
| Product Status | Obsolete | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
Engineering Selection Recommendations
The MIC39501-2.5WU-TR is the direct functional equivalent of the MIC39501-2.5BU TR. Both devices share identical electrical specifications and mechanical packaging. The primary distinction is product status and regulatory compliance: the MIC39501-2.5BU TR is obsolete, while the MIC39501-2.5WU-TR maintains active status with ROHS3 compliance. For new designs and ongoing production requiring 2.5V, 5A linear regulation in TO-263-5 packaging, the MIC39501-2.5WU-TR is the appropriate selection.
Frequently Asked Questions (FAQ)
Q: Can the MIC39501-2.5WU-TR be used as a direct replacement for the MIC39501-2.5BU TR?
A: Yes. Both parts are manufactured by Microchip Technology and share identical electrical specifications including 2.5V fixed output, 5A output current, 16V maximum input voltage, and 0.575V dropout voltage. Both use TO-263-5 surface mount packaging with identical pinout and control/protection features.
Q: What is the difference between the MIC39501-2.5BU TR and MIC39501-2.5WU-TR?
A: The primary differences are product status and regulatory compliance. The MIC39501-2.5BU TR is classified as obsolete, while the MIC39501-2.5WU-TR is active. The MIC39501-2.5WU-TR is ROHS3 compliant, whereas the MIC39501-2.5BU TR is RoHS non-compliant.
Q: Are the packages physically identical?
A: Yes. Both parts use the TO-263-5 surface mount package, also designated as D2PAK with 5 leads plus tab. PCB layouts and thermal management considerations remain unchanged between the two parts.
Q: What protection features are included in both devices?
A: Both the MIC39501-2.5BU TR and MIC39501-2.5WU-TR include Over Current protection, Over Temperature protection, and Reverse Polarity protection. Both feature an Enable control function.
Q: What is the operating temperature range?
A: Both devices operate across -40°C to 125°C, suitable for industrial and commercial applications.
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