LM1085IT-5.0 Equivalent & Substitute Parts

Part Overview

The LM1085IT-5.0 is a linear voltage regulator IC manufactured by Texas Instruments, classified as a Power Management (PMIC) component. It delivers a fixed 5V output at 3A maximum current in a TO-220-3 through-hole package. The device is currently in Last Time Buy status with 1,620 units in stock. Equivalent and substitute parts are necessary when the primary part reaches end-of-life, inventory constraints occur, or when design requirements allow for alternative manufacturers offering compatible electrical and mechanical specifications.

Substiute Parts

LM1085IT-5.0

Texas InstrumentsIn Stock: 1715LM1085IT-5.0 Datasheet

Current PartRFQ

LM1085IT-5.0/NOPB

Texas InstrumentsIn Stock: 12316LM1085IT-5.0/NOPB Datasheet

DirectRFQ

LD1085V50

STMicroelectronicsIn Stock: 5096LD1085V50 Datasheet

MFR RecommendedRFQ

LT1084CT-5#PBF

Analog Devices Inc.In Stock: 4056LT1084CT-5#PBF Datasheet

MFR RecommendedRFQ

LT1085CT-5#PBF

Analog Devices Inc.In Stock: 1237LT1085CT-5#PBF Datasheet

MFR RecommendedRFQ

LT1085IT-5#PBF

Analog Devices Inc.In Stock: 2051LT1085IT-5#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM1085IT-5.0 is determined by the following critical parameters:

• Fixed output voltage of 5V
• Output current capability of 3A or greater
• TO-220-3 package configuration
• Through-hole mounting type
• Operating temperature range of -40°C to 125°C or wider
• Over temperature protection
• ROHS3 compliance

Parts meeting all these criteria are classified as direct equivalents. Parts with higher output current ratings (5A) or slightly different maximum input voltage specifications remain functionally compatible within standard application requirements.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Highest Compatibility): LM1085IT-5.0/NOPB is the primary substitute, manufactured by Texas Instruments with identical electrical specifications and Active product status. This part provides the most direct replacement path with maximum inventory availability (12,300 units).

Cross-Manufacturer Equivalents: LT1085IT-5#PBF (Analog Devices Inc.) matches all critical parameters including the -40°C to 125°C operating temperature range and 3A output current. This part is Active with 2,002 units available.

LD1085V50 (STMicroelectronics) is functionally compatible with a higher maximum input voltage rating (30V) and Active status. It provides an alternative from a different manufacturer with 5,042 units in stock.

Higher Current Alternative: LT1084CT-5#PBF (Analog Devices Inc.) provides 5A output current capability, exceeding the 3A requirement. However, its operating temperature range is limited to 0°C to 125°C and maximum input voltage is 20V. This part is suitable only when the application does not require the full -40°C lower temperature limit.

Compliance Status: All substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can LM1085IT-5.0/NOPB be used as a direct replacement for LM1085IT-5.0? A: Yes. Both parts are manufactured by Texas Instruments with identical electrical and mechanical specifications. The /NOPB designation indicates lead-free plating and does not affect functional compatibility.

Q: What is the difference between LT1085IT-5#PBF and LT1084CT-5#PBF? A: The LT1085IT-5#PBF is rated for 3A output current with an operating temperature range of -40°C to 125°C. The LT1084CT-5#PBF provides 5A output current but operates only from 0°C to 125°C. Select based on your application's current and temperature requirements.

Q: Is LD1085V50 compatible with circuits designed for LM1085IT-5.0? A: Yes. The LD1085V50 maintains the same 5V output, 3A current rating, and TO-220-3 package. Its higher maximum input voltage (30V vs. 25V) provides additional design margin without affecting compatibility.

Q: Do all substitute parts have the same package configuration? A: Yes. All listed substitute parts use the TO-220-3 through-hole package, ensuring mechanical and thermal compatibility with existing PCB layouts.

Q: Which substitute part has the best inventory availability? A: LM1085IT-5.0/NOPB has the highest inventory with 12,300 units in stock, followed by LD1085V50 with 5,042 units.

Q: Are there temperature range limitations I should consider when selecting a substitute? A: LT1084CT-5#PBF and LT1085CT-5#PBF are limited to 0°C minimum operating temperature, compared to -40°C for the original LM1085IT-5.0. Select these parts only if your application does not require operation below 0°C.