MIC29502BU TR Equivalent & Substitute Parts

Part Overview

The MIC29502BU TR is a linear voltage regulator IC from Microchip Technology designed for positive adjustable output applications. This Surface Mount device delivers 5A output current in a TO-263-5 package configuration. The part is classified as Obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement planning. Direct substitutes and manufacturer-recommended alternatives are available from both Microchip Technology and Analog Devices Inc.

Substiute Parts

MIC29502BU TR

Microchip TechnologyIn Stock: 864MIC29502BU TR Datasheet

Current PartRFQ

MIC29502WU-TR

Microchip TechnologyIn Stock: 23144MIC29502WU-TR Datasheet

DirectRFQ

LT1764AMPQ#PBF

Analog Devices Inc.In Stock: 7046LT1764AMPQ#PBF Datasheet

MFR RecommendedRFQ

LT1764EQ#PBF

Analog Devices Inc.In Stock: 2184LT1764EQ#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MIC29502BU TR is determined by the following critical parameters:

Primary Substitution Criteria:

• Output Configuration: Positive Adjustable
• Number of Regulators: 1
• Voltage - Output (Min/Fixed): 1.25V or lower
• Voltage - Output (Max): 25V or higher
• Current - Output: 5A or higher
• Voltage - Input (Max): 26V or higher
• Voltage Dropout (Max): 0.6V @ rated current or lower
• Operating Temperature Range: -40°C minimum, 125°C maximum
• Package / Case: TO-263-6, D2PAK (5 Leads + Tab)
• Mounting Type: Surface Mount
• Control Features: Enable capability
• Protection Features: Over Current, Over Temperature, Reverse Polarity

Direct Substitute (Same Manufacturer): MIC29502WU-TR maintains identical electrical specifications and package configuration. The primary difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel) and product status (Active versus Obsolete).

Manufacturer-Recommended Alternatives (Analog Devices Inc.): LT1764AMPQ#PBF and LT1764EQ#PBF are functionally equivalent alternatives. These parts meet the core substitution criteria with the following considerations: output current is rated at 3A (lower than the 5A specification), maximum input voltage is 20V (lower than 26V), and minimum output voltage is 1.21V (lower than 1.25V). Both devices maintain the same package configuration and include Enable control and comprehensive protection features.

Parameter Comparison

Engineering Selection Recommendations

MIC29502WU-TR is the primary substitute for the obsolete MIC29502BU TR. This part is manufactured by the same supplier (Microchip Technology), maintains identical electrical specifications including 5A output current and 26V maximum input voltage, and is classified as Active product status. The device is ROHS3 Compliant, addressing regulatory requirements not met by the original part. Packaging format differs (Cut Tape & Digi-Reel® versus Tape & Reel) but does not affect functional compatibility.

LT1764AMPQ#PBF and LT1764EQ#PBF are manufacturer-recommended alternatives from Analog Devices Inc. These parts are suitable for applications where output current requirements do not exceed 3A and maximum input voltage does not exceed 20V. Both devices are Active product status and ROHS3 Compliant. LT1764AMPQ#PBF supports extended operating temperature range (-55°C to 125°C) compared to LT1764EQ#PBF (-40°C to 125°C). The LT1764 series includes PSRR specification (63dB @ 120Hz) and lower MSL rating (1, Unlimited) compared to the MIC29502 series.

Selection between these alternatives depends on application-specific requirements for output current, input voltage range, and regulatory compliance status.

Frequently Asked Questions (FAQ)

Q: Can MIC29502WU-TR directly replace MIC29502BU TR in existing designs?

A: Yes. MIC29502WU-TR is a direct functional equivalent with identical electrical specifications. The primary difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel) and product status (Active versus Obsolete). No circuit modifications are required.

Q: What are the key limitations when using LT1764AMPQ#PBF or LT1764EQ#PBF as substitutes?

A: The LT1764 series is rated for 3A maximum output current, compared to 5A for the MIC29502. Maximum input voltage is 20V versus 26V. Maximum output voltage is 20V versus 25V. These devices are suitable only for applications within these reduced specifications.

Q: Are the LT1764 devices pin-compatible with the MIC29502?

A: Yes. Both device families use the TO-263-6, D2PAK (5 Leads + Tab) package configuration with identical pinout. Physical board layout compatibility is maintained.

Q: What is the significance of RoHS compliance status differences?

A: The original MIC29502BU TR is RoHS non-compliant. MIC29502WU-TR and both LT1764 variants are ROHS3 Compliant. For applications subject to RoHS regulations, MIC29502WU-TR or LT1764 series are required.

Q: How do MSL ratings affect component handling?

A: MIC29502BU TR and MIC29502WU-TR have MSL 3 rating (168 Hours maximum floor life). LT1764AMPQ#PBF and LT1764EQ#PBF have MSL 1 rating (Unlimited floor life). Lower MSL values indicate less stringent moisture control requirements during storage and assembly.

Q: Which substitute is recommended for new designs?

A: For applications requiring 5A output current and 26V input voltage capability, MIC29502WU-TR is the recommended substitute. For applications with reduced current and voltage requirements (3A output, 20V input maximum), LT1764AMPQ#PBF or LT1764EQ#PBF provide active product status with enhanced compliance certifications.