BQ24261RGET Equivalent & Substitute Parts

Part Overview

The BQ24261RGET is a lithium-ion battery charger IC manufactured by Texas Instruments, designed for single-cell battery management in a 24-VQFN (4x4) surface mount package. This device provides constant-current, programmable charging with integrated fault protection for over-temperature and over-voltage conditions. The part is currently classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

BQ24261RGET

Texas InstrumentsIn Stock: 918BQ24261RGET Datasheet

Current PartRFQ

BQ25601RTWR

Texas InstrumentsIn Stock: 70217BQ25601RTWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BQ24261RGET is determined by the following critical parameters:

• Battery Chemistry Compatibility: Both lithium-ion and lithium-ion/polymer chemistries are functionally compatible for single-cell applications
• Charge Current Rating: Maximum 3A charging current must be maintained
• Supply Voltage Range: Maximum supply voltage of 13.2V or higher
• Interface Protocol: I2C communication interface required
• Operating Temperature Range: -40°C to 85°C minimum specification
• Package Form Factor: 24-pin VFQFN or WFQFN with exposed pad, surface mount configuration
• Regulatory Compliance: ROHS3 compliance and equivalent MSL rating

The BQ25601RTWR qualifies as a direct substitute based on matching all critical electrical parameters and maintaining compatible package specifications within the Texas Instruments BQ25601 product family.

Parameter Comparison

Engineering Selection Recommendations

The BQ25601RTWR is the manufacturer-recommended substitute for the obsolete BQ24261RGET. Selection of this alternative is supported by:

• Product Status: The BQ25601RTWR maintains active product status with high inventory availability (70,200 pcs), ensuring long-term supply chain reliability compared to the obsolete BQ24261RGET
• Regulatory Compliance: Both parts maintain ROHS3 compliance and identical MSL ratings, ensuring equivalent environmental and handling requirements
• Electrical Equivalence: Matching charge current (3A), I2C interface, and operating temperature range (-40°C to 85°C) provide direct functional replacement
• Package Compatibility: Both 24-VFQFN and 24-WFQFN packages are 4x4mm form factors with exposed pads, suitable for equivalent PCB layouts with minor footprint adjustments
• Supply Voltage Margin: The BQ25601RTWR provides slightly higher maximum supply voltage (14.6V vs 13.2V), offering improved headroom for input power variations

Frequently Asked Questions (FAQ)

Q: Can the BQ25601RTWR directly replace the BQ24261RGET without PCB modifications?

A: The BQ25601RTWR uses a 24-WFQFN package versus the 24-VFQFN package of the BQ24261RGET. Both are 4x4mm surface mount packages with exposed pads. Minor PCB footprint adjustments may be required; consult the respective datasheets for exact pin assignments and thermal pad specifications.

Q: What is the difference between Lithium Ion and Lithium Ion/Polymer battery chemistry support?

A: The BQ25601RTWR supports both lithium-ion and lithium-ion/polymer chemistries, providing broader application flexibility. The BQ24261RGET supports lithium-ion only. For lithium-ion applications, both parts are functionally equivalent.

Q: Are there any differences in programmable features between these parts?

A: The BQ24261RGET lists programmable current features, while the BQ25601RTWR does not specify programmable features in the provided data. Consult the detailed datasheets to confirm feature parity for your specific application requirements.

Q: What is the significance of the higher battery pack voltage rating (4.2V vs 4.6V)?

A: The BQ25601RTWR's 4.2V battery pack voltage rating reflects support for standard single-cell lithium-ion/polymer batteries, which typically charge to 4.2V. The BQ24261RGET's 4.6V rating may indicate a specific application variant. Verify your battery pack voltage specification against the appropriate datasheet.

Q: Is the BQ25601RTWR available in the same packaging options as the BQ24261RGET?

A: The BQ25601RTWR is available in Cut Tape (CT) and Digi-Reel packaging, with significantly higher inventory (70,200 pcs). The BQ24261RGET is obsolete with limited remaining stock (897 pcs). For new designs, the BQ25601RTWR packaging options provide superior availability and supply chain continuity.