MIC39301-1.8WU-TR Equivalent & Substitute Parts

Part Overview

The MIC39301-1.8WU-TR is a linear voltage regulator IC from Microchip Technology, classified as a Power Management (PMIC) component. This device delivers a fixed 1.8V output at 3A maximum current in a TO-263-5 surface mount package. The part is currently in active production status with 991 units in stock.

Equivalent and substitute parts are identified when designs require alternative sourcing due to supply constraints, inventory availability, or specific application requirements while maintaining electrical and mechanical compatibility within the defined parameter ranges.

Substiute Parts

MIC39301-1.8WU-TR

Microchip TechnologyIn Stock: 1058MIC39301-1.8WU-TR Datasheet

Current PartRFQ

LP3853ES-1.8/NOPB

Texas InstrumentsIn Stock: 1492LP3853ES-1.8/NOPB Datasheet

MFR RecommendedRFQ

LP3965ESX-1.8/NOPB

Texas InstrumentsIn Stock: 1492LP3965ESX-1.8/NOPB Datasheet

MFR RecommendedRFQ

LT1764AEQ-1.8#PBF

Analog Devices Inc.In Stock: 1509LT1764AEQ-1.8#PBF Datasheet

MFR RecommendedRFQ

LT1764AEQ-1.8#TRPBF

Analog Devices Inc.In Stock: 8367LT1764AEQ-1.8#TRPBF Datasheet

MFR RecommendedRFQ

LT1963AEQ-1.8#PBF

Analog Devices Inc.In Stock: 2219LT1963AEQ-1.8#PBF Datasheet

MFR RecommendedRFQ

LT1963AEQ-1.8#TRPBF

Analog Devices Inc.In Stock: 1902LT1963AEQ-1.8#TRPBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MIC39301-1.8WU-TR are qualified based on the following electrical and mechanical criteria:

Primary Substitution Criteria:

• Fixed output voltage of 1.8V
• Output current capability of 3A or greater
• TO-263-5 (DDPAK-5) package compatibility
• Surface mount technology
• Operating temperature range of -40°C to 125°C
• Enable control feature
• Over current and over temperature protection

Secondary Compatibility Factors:

• Input voltage rating (minimum 16V tolerance)
• Voltage dropout characteristics
• RoHS3 compliance
• Active product status

Parts are grouped into two categories based on output current capacity: full-capacity substitutes (3A output) and reduced-capacity alternatives (1.5A output). Full-capacity substitutes maintain identical current specifications. Reduced-capacity alternatives are suitable only for applications where maximum output current does not exceed 1.5A.

Parameter Comparison

Engineering Selection Recommendations

Full-Capacity Substitutes (3A Output):

LP3853ES-1.8/NOPB from Texas Instruments is a direct functional equivalent with 3A output capacity. This part operates with a maximum input voltage of 7V, which is lower than the MIC39301-1.8WU-TR. Selection of this part requires verification that the application input voltage does not exceed 7V. The part is ROHS3 compliant and in active production status.

LT1764AEQ-1.8#PBF and LT1764AEQ-1.8#TRPBF from Analog Devices are functionally equivalent with 3A output capacity and support input voltages up to 20V. Both variants are ROHS3 compliant and in active production. The #TRPBF variant (Cut Tape & Digi-Reel packaging) has higher inventory availability (8264 units) compared to the #PBF variant (1399 units). The LT1764 series features lower quiescent current (1.5 mA) and moisture sensitivity level of 1 (unlimited storage).

Reduced-Capacity Alternatives (1.5A Output):

LP3965ESX-1.8/NOPB from Texas Instruments delivers 1.5A maximum output current. This part is suitable only for applications where the required output current does not exceed 1.5A. Input voltage is limited to 7V maximum. ROHS3 compliant and in active production status.

LT1963AEQ-1.8#PBF and LT1963AEQ-1.8#TRPBF from Analog Devices deliver 1.5A maximum output current with input voltage support up to 20V. Both variants are ROHS3 compliant and in active production. The #TRPBF variant has higher inventory (1846 units) compared to the #PBF variant (2140 units). These parts feature lower quiescent current (1.5 mA) and moisture sensitivity level of 1 (unlimited storage).

Frequently Asked Questions (FAQ)

Q: Can LP3853ES-1.8/NOPB replace MIC39301-1.8WU-TR in all applications?

A: LP3853ES-1.8/NOPB is electrically equivalent with matching 3A output current and TO-263-5 package. However, the maximum input voltage is 7V compared to 16V for the MIC39301-1.8WU-TR. Substitution is valid only if the application input voltage does not exceed 7V.

Q: What is the difference between LT1764AEQ-1.8#PBF and LT1764AEQ-1.8#TRPBF?

A: Both parts are electrically identical with 3A output current and 20V input voltage rating. The difference is packaging: #PBF is supplied in Tube packaging, while #TRPBF is supplied in Cut Tape & Digi-Reel packaging. The #TRPBF variant has significantly higher inventory availability.

Q: Can I use LT1963AEQ-1.8#TRPBF as a substitute for MIC39301-1.8WU-TR?

A: LT1963AEQ-1.8#TRPBF has a maximum output current of 1.5A, compared to 3A for the MIC39301-1.8WU-TR. This part is suitable only if the application requires a maximum output current of 1.5A or less. The 1.8V output voltage, TO-263-5 package, and operating temperature range are compatible.

Q: Are all substitute parts RoHS3 compliant?

A: All listed substitute parts are ROHS3 compliant. The MIC39301-1.8WU-TR is also ROHS3 compliant.

Q: What does moisture sensitivity level mean for component storage?

A: Moisture sensitivity level (MSL) indicates the maximum time a component can be stored in standard conditions (30°C, 60% relative humidity) before requiring baking. MSL 3 allows 168 hours of storage. MSL 1 (unlimited) allows indefinite storage without baking requirements. Analog Devices parts (LT1764 and LT1963 series) have MSL 1, while Microchip and Texas Instruments parts have MSL 3.

Q: Which substitute part has the best availability?

A: LT1764AEQ-1.8#TRPBF has the highest inventory with 8264 units in stock, compared to 991 units for the MIC39301-1.8WU-TR.