LP2989IMM-3.3 Equivalent & Substitute Parts

Part Overview

The LP2989IMM-3.3 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 3.3V output applications with 500mA current capacity in an 8-VSSOP surface mount package. This device is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support, production continuity, and component sourcing.

Substiute Parts

LP2989IMM-3.3

Texas InstrumentsIn Stock: 3250LP2989IMM-3.3 Datasheet

Current PartRFQ

LP2989IMM-3.3/NOPB

Texas InstrumentsIn Stock: 2106LP2989IMM-3.3/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LP2989IMM-3.3 is determined by strict equivalence across the following critical parameters:

• Output voltage: 3.3V fixed
• Output current capacity: 500mA
• Maximum input voltage: 16V
• Dropout voltage: 0.65V @ 500mA
• Package type: 8-VSSOP surface mount
• Control features: Enable function
• Protection: Over Current, Over Temperature, Short Circuit
• Operating temperature range: -40°C ~ 125°C

The LP2989IMM-3.3/NOPB is a parametric equivalent of the LP2989IMM-3.3, sharing identical electrical specifications and package configuration. The primary distinction is packaging format and RoHS compliance status.

Parameter Comparison

Engineering Selection Recommendations

The LP2989IMM-3.3/NOPB is a direct parametric equivalent suitable for applications requiring the LP2989IMM-3.3. Both parts maintain identical electrical performance and physical package specifications.

The primary distinction is RoHS compliance status. The LP2989IMM-3.3/NOPB achieves ROHS3 compliance, whereas the original LP2989IMM-3.3 is RoHS non-compliant. For applications subject to RoHS regulatory requirements or procurement policies mandating RoHS-compliant components, the LP2989IMM-3.3/NOPB is the appropriate selection.

Both parts are classified as obsolete. Component sourcing should prioritize available inventory from authorized distributors. The LP2989IMM-3.3/NOPB currently maintains higher inventory availability (2000 Pcs) compared to the original part (3218 Pcs).

Frequently Asked Questions (FAQ)

Q: Can LP2989IMM-3.3/NOPB be used as a direct replacement for LP2989IMM-3.3?

A: Yes. Both parts are parametrically equivalent with identical output voltage (3.3V), output current (500mA), dropout voltage (0.65V @ 500mA), and package configuration (8-VSSOP). Electrical performance and pin compatibility are identical.

Q: What is the difference between LP2989IMM-3.3 and LP2989IMM-3.3/NOPB?

A: The primary difference is RoHS compliance status. LP2989IMM-3.3/NOPB is ROHS3 compliant, while LP2989IMM-3.3 is RoHS non-compliant. All electrical and mechanical specifications are identical.

Q: Are there any package or pinout differences?

A: No. Both parts use the 8-VSSOP surface mount package with identical pinout and mechanical dimensions (0.118", 3.00mm Width).

Q: Why is the product status listed as obsolete?

A: Both the LP2989IMM-3.3 and LP2989IMM-3.3/NOPB are obsolete products. Component sourcing should be based on available inventory from authorized distributors.

Q: Which part should be selected for new designs?

A: For applications requiring RoHS compliance, select LP2989IMM-3.3/NOPB. For legacy system maintenance or applications without RoHS requirements, either part is electrically equivalent. Verify current inventory availability with authorized distributors before finalizing procurement decisions.