LP2985ITL-3.3/NOPB Equivalent & Substitute Parts

Part Overview

The LP2985ITL-3.3/NOPB is a linear voltage regulator IC manufactured by Texas Instruments, designed to deliver a fixed 3.3V output at 150mA in a 5-DSBGA surface mount package. This device is classified as obsolete, which necessitates identification of active equivalent parts for new designs and ongoing production requirements. The part provides positive fixed output regulation with integrated protection features including over-current, over-temperature, and short-circuit protection.

Substiute Parts

LP2985ITL-3.3/NOPB

Texas InstrumentsIn Stock: 756LP2985ITL-3.3/NOPB Datasheet

Current PartRFQ

LP3985ITL-3.3/NOPB

Texas InstrumentsIn Stock: 864LP3985ITL-3.3/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The LP3985ITL-3.3/NOPB qualifies as a direct substitute based on the following critical parameters:

• Output Voltage: Both parts deliver fixed 3.3V output
• Output Current: Both parts rated at 150mA
• Package: Identical 5-DSBGA (1.41x1.08) surface mount package
• Mounting Type: Both surface mount
• Operating Temperature Range: Both operate -40°C ~ 125°C
• Protection Features: Both include over-current, over-temperature, and short-circuit protection
• Compliance: Both ROHS3 compliant with MSL 1 (Unlimited)

The LP3985ITL-3.3/NOPB is the manufacturer-recommended successor, with active product status enabling continued supply and support.

Parameter Comparison

Engineering Selection Recommendations

The LP3985ITL-3.3/NOPB is the appropriate selection for applications currently using or requiring the LP2985ITL-3.3/NOPB. The substitute part maintains identical electrical output specifications, package footprint, and thermal operating range. The LP3985ITL-3.3/NOPB carries active product status from Texas Instruments, ensuring continued availability and manufacturing support. Both parts meet ROHS3 compliance and carry unlimited moisture sensitivity level ratings, suitable for standard PCB assembly processes. The LP3985ITL-3.3/NOPB demonstrates improved performance characteristics including reduced dropout voltage and enhanced PSRR across the frequency spectrum, while operating within a more constrained input voltage range of 6V maximum.

Frequently Asked Questions (FAQ)

Q: Can the LP3985ITL-3.3/NOPB be used as a direct replacement for the LP2985ITL-3.3/NOPB?

A: Yes. Both parts deliver identical 3.3V fixed output at 150mA in the same 5-DSBGA package. Electrical output specifications, protection features, and operating temperature ranges are equivalent.

Q: What is the primary difference between these parts?

A: The LP3985ITL-3.3/NOPB is the active successor with improved performance. Key differences include reduced maximum input voltage (6V vs. 16V), lower dropout voltage (0.1V vs. 0.58V), and enhanced PSRR performance. The LP2985ITL-3.3/NOPB is obsolete.

Q: Are there package compatibility concerns?

A: No. Both parts use the identical 5-DSBGA (1.41x1.08) surface mount package. PCB footprints and assembly processes remain unchanged.

Q: What input voltage range should be used with the LP3985ITL-3.3/NOPB?

A: The LP3985ITL-3.3/NOPB is rated for maximum input voltage of 6V. Applications requiring higher input voltages must verify compatibility with this constraint.

Q: Are both parts RoHS compliant?

A: Yes. Both the LP2985ITL-3.3/NOPB and LP3985ITL-3.3/NOPB are ROHS3 compliant with MSL 1 (Unlimited) ratings.

Q: Why is the LP2985ITL-3.3/NOPB listed as obsolete?

A: Obsolete status indicates Texas Instruments has discontinued active manufacturing and support. The LP3985ITL-3.3/NOPB is the recommended active alternative for new designs and ongoing production.