UC2906Q Equivalent & Substitute Parts

Part Overview

The UC2906Q is a lead-acid battery charger IC manufactured by Texas Instruments, housed in a 20-PLCC (9x9) surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The UC2906Q operates across a supply voltage range up to 40V and supports programmable charging current, making it suitable for lead-acid battery management applications in industrial and automotive environments.

Substiute Parts

UC2906Q

Texas InstrumentsIn Stock: 844UC2906Q Datasheet

Current PartRFQ

UC2906DWTR

Texas InstrumentsIn Stock: 6643UC2906DWTR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the UC2906Q is determined by the following critical parameters:

• Base Product Number: Both parts share the UC2906 base designation, confirming functional equivalence at the silicon level
• Manufacturer: Texas Instruments maintains consistent electrical specifications across package variants
• Battery Chemistry & Application: Lead-acid charger functionality is preserved
• Programmable Features: Current programmability is maintained
• Maximum Supply Voltage: 40V specification is identical
• Operating Temperature Range: -40°C ~ 70°C range is consistent
• RoHS & REACH Compliance: Both parts meet ROHS3 and REACH Unaffected standards
• Moisture Sensitivity Level: MSL 2 classification is identical

The primary difference is the package format: UC2906Q uses 20-PLCC (9x9), while UC2906DWTR uses 16-SOIC. Both are surface mount packages with equivalent electrical performance.

Parameter Comparison

Engineering Selection Recommendations

The UC2906DWTR is the manufacturer-recommended substitute for the UC2906Q. Both components share identical electrical specifications, operating parameters, and compliance certifications. The UC2906DWTR is currently in active production status, ensuring long-term availability and supply chain continuity.

The transition from UC2906Q (20-PLCC) to UC2906DWTR (16-SOIC) requires PCB layout modification to accommodate the different package footprint. The 16-SOIC package offers reduced board space compared to the 20-PLCC variant. Both packages are surface mount compatible with standard reflow soldering processes.

Compliance requirements are equivalent: both parts are ROHS3 compliant and REACH unaffected, meeting regulatory standards for industrial and automotive applications.

Frequently Asked Questions (FAQ)

Q: Can UC2906DWTR directly replace UC2906Q without circuit modifications?

A: The UC2906DWTR is electrically equivalent to the UC2906Q. However, PCB layout changes are required due to different package formats (16-SOIC versus 20-PLCC). Pin configuration and electrical function are preserved across the substitution.

Q: What is the primary reason for substituting UC2906Q?

A: The UC2906Q is classified as obsolete. The UC2906DWTR is the active production equivalent, ensuring component availability and supply chain reliability for new designs and production runs.

Q: Are there compliance or certification differences between these parts?

A: No. Both UC2906Q and UC2906DWTR maintain identical RoHS3 compliance and REACH unaffected status. Moisture sensitivity levels (MSL 2) are equivalent, with a 1-year shelf life under controlled conditions.

Q: What are the package footprint differences?

A: UC2906Q uses a 20-LCC (J-Lead) package measuring 9x9mm. UC2906DWTR uses a 16-SOIC package measuring 0.295" (7.50mm width). Both are surface mount packages suitable for automated assembly.

Q: Is the operating temperature range the same?

A: Yes. Both parts operate across -40°C to 70°C (TA), maintaining identical thermal specifications for industrial and automotive environments.

Q: What is the maximum supply voltage for both parts?

A: Both UC2906Q and UC2906DWTR support a maximum supply voltage of 40V, with identical programmable current charging features for lead-acid battery applications.