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MIC29201-5.0BU Linear Voltage Regulator Equivalent & Substitute Parts
Part Overview
The MIC29201-5.0BU is a linear voltage regulator IC from Microchip Technology designed for positive fixed 5V output applications with 400mA current capacity in a TO-263-5 surface mount package. This part is classified as obsolete, making identification of suitable substitute components essential for ongoing production and maintenance applications. The MIC29201-5.0BU provides regulated 5V output with integrated protection features including load dump, over-current, and reverse polarity protection, operating across the industrial temperature range of -40°C to 125°C.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Technology |
| Output Voltage (Fixed) | 5V |
| Output Current | 400mA |
| Input Voltage (Max) | 26V |
| Voltage Dropout (Max) | 0.75V @ 400mA |
| Quiescent Current | 300 µA |
| Package Type | TO-263-5 (D2PAK, 5 Leads + Tab) |
| Operating Temperature Range | -40°C to 125°C |
| Protection Features | Load Dump, Over Current, Reverse Polarity |
| Control Features | Enable |
Substitute Part Grouping Explanation
Substitution of the MIC29201-5.0BU is determined by strict equivalence across the following critical parameters:
- Output voltage specification (5V fixed)
- Output current rating (400mA minimum)
- Maximum input voltage tolerance (26V)
- Voltage dropout characteristics (0.75V @ 400mA)
- Package compatibility (TO-263-5 surface mount)
- Operating temperature range (-40°C to 125°C)
- Protection feature set (Load Dump, Over Current, Reverse Polarity)
- Enable control functionality
The MIC29201-5.0WU meets all electrical and mechanical requirements for direct substitution. Both parts share identical base product designation (MIC29201) and are manufactured by Microchip Technology with matching electrical specifications and package footprint.
Parameter Comparison
| Parameter | MIC29201-5.0BU | MIC29201-5.0WU |
|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology |
| Output Voltage (Fixed) | 5V | 5V |
| Output Current | 400mA | 400mA |
| Input Voltage (Max) | 26V | 26V |
| Voltage Dropout (Max) | 0.75V @ 400mA | 0.75V @ 400mA |
| Quiescent Current | 300 µA | 300 µA |
| Supply Current (Max) | 12 mA | 12 mA |
| Operating Temperature | -40°C to 125°C | -40°C to 125°C |
| Package Type | TO-263-5 | TO-263-5 |
| Protection Features | Load Dump, Over Current, Reverse Polarity | Load Dump, Over Current, Reverse Polarity |
| Control Features | Enable | Enable |
| Product Status | Obsolete | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 3 (168 Hours) | 3 (168 Hours) |
Engineering Selection Recommendations
The MIC29201-5.0WU is the direct equivalent substitute for the obsolete MIC29201-5.0BU. Selection between these parts should be based on the following criteria:
MIC29201-5.0WU is the preferred choice for new designs and ongoing production due to its active product status and ROHS3 compliance certification. This part maintains full electrical and mechanical compatibility with the MIC29201-5.0BU while offering improved regulatory compliance for applications subject to RoHS requirements.
MIC29201-5.0BU remains suitable for legacy system maintenance and repair where RoHS non-compliance is not a constraint and existing inventory is available. The obsolete status indicates this part is no longer manufactured or supported by Microchip Technology.
Both parts carry identical REACH Unaffected status and EAR99 export classification. Packaging differences (tube for MIC29201-5.0WU versus unspecified for MIC29201-5.0BU) do not affect electrical performance or PCB integration.
Frequently Asked Questions (FAQ)
Q: Can MIC29201-5.0WU directly replace MIC29201-5.0BU in existing designs?
A: Yes. Both parts are electrically and mechanically identical with matching output voltage (5V), current rating (400mA), input voltage tolerance (26V max), dropout voltage (0.75V @ 400mA), package type (TO-263-5), and protection features. Pin-for-pin compatibility is maintained.
Q: What is the difference between MIC29201-5.0BU and MIC29201-5.0WU?
A: The primary differences are product status and regulatory compliance. MIC29201-5.0BU is obsolete and RoHS non-compliant, while MIC29201-5.0WU is active and ROHS3 compliant. All electrical specifications and package footprints are identical.
Q: Why is the MIC29201-5.0BU listed as obsolete?
A: Obsolete status indicates Microchip Technology has discontinued manufacturing and support for this specific part number variant. The MIC29201-5.0WU represents the current active equivalent.
Q: Are there any thermal or performance differences between these parts?
A: No. Both parts share identical thermal characteristics, quiescent current (300 µA), supply current (12 mA max), and operating temperature range (-40°C to 125°C).
Q: What packaging is supplied with each part?
A: MIC29201-5.0WU is supplied in tube packaging. Both parts use the same TO-263-5 (D2PAK) surface mount package with 5 leads plus tab.
Q: Are both parts suitable for industrial temperature applications?
A: Yes. Both parts operate across the full industrial temperature range of -40°C to 125°C with identical performance characteristics.
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