LM3490IM5-5.0 Equivalent & Substitute Parts

Part Overview

The LM3490IM5-5.0 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 5V output at 100mA in a SOT-23-5 surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part delivers regulated 5V output with integrated enable control and short circuit protection, suitable for low-power applications requiring compact form factors.

Substiute Parts

LM3490IM5-5.0

Texas InstrumentsIn Stock: 56152LM3490IM5-5.0 Datasheet

Current PartRFQ

TPS70950DBVR

Texas InstrumentsIn Stock: 15407TPS70950DBVR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The TPS70950DBVR qualifies as a direct substitute for the LM3490IM5-5.0 based on the following critical parameters:

• Output Voltage: Both parts deliver fixed 5V output
• Package Compatibility: Both use SOT-23-5 (SC-74A, SOT-753) surface mount packaging
• Input Voltage Range: Both accept maximum 30V input
• Voltage Dropout: Both specify 1.2V maximum dropout
• Operating Temperature Range: Both operate across -40°C to 125°C
• Control Features: Both include Enable functionality
• Mounting Type: Both are surface mount components

The TPS70950DBVR provides enhanced specifications including higher output current capability (150mA vs 100mA), improved quiescent current performance (2.05µA vs 4mA), and expanded protection features (Over Current, Over Temperature, Reverse Current, Under Voltage Lockout).

Parameter Comparison

Engineering Selection Recommendations

The TPS70950DBVR is the designated manufacturer-recommended substitute for the obsolete LM3490IM5-5.0. Selection of the TPS70950DBVR is supported by:

• Product Status: The TPS70950DBVR maintains active production status, ensuring long-term availability and supply chain continuity
• Regulatory Compliance: The TPS70950DBVR achieves ROHS3 compliance, meeting current environmental and regulatory requirements, whereas the LM3490IM5-5.0 is non-compliant
• Certification Alignment: Both parts carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications, maintaining export and tariff consistency
• Electrical Compatibility: Identical output voltage, input voltage range, dropout voltage, and package ensure direct PCB-level compatibility
• Enhanced Reliability: The TPS70950DBVR incorporates additional protection features (Over Current, Over Temperature, Reverse Current, Under Voltage Lockout) beyond the short circuit protection of the original part

Frequently Asked Questions (FAQ)

Q: Can the TPS70950DBVR directly replace the LM3490IM5-5.0 on existing PCBs?

A: Yes. Both parts use identical SOT-23-5 packaging and pinout. The TPS70950DBVR is pin-compatible and electrically compatible for applications requiring up to 100mA output current.

Q: What is the primary advantage of switching to the TPS70950DBVR?

A: The TPS70950DBVR is an active product with ROHS3 compliance, addressing the obsolescence of the LM3490IM5-5.0. It also provides superior quiescent current performance (2.05µA vs 4mA) and expanded protection features.

Q: Are there any current limitations when using the TPS70950DBVR as a substitute?

A: No. The TPS70950DBVR supports 150mA output current, exceeding the 100mA requirement of the original LM3490IM5-5.0. Applications limited to 100mA operation remain fully supported.

Q: Do the parts have identical voltage dropout characteristics?

A: Both parts specify 1.2V maximum dropout voltage. The TPS70950DBVR achieves this at its higher 150mA rating, demonstrating equivalent or superior performance at the original 100mA operating point.

Q: What packaging options are available for the TPS70950DBVR?

A: The TPS70950DBVR is supplied in Cut Tape (CT) and Digi-Reel® packaging formats, maintaining compatibility with standard component handling and assembly processes.

Q: Are there compliance or certification differences between the two parts?

A: Yes. The TPS70950DBVR is ROHS3 compliant and REACH unaffected, meeting current regulatory standards. The LM3490IM5-5.0 is RoHS non-compliant. Both carry identical ECCN and HTSUS classifications.