BQ24751RHDR Equivalent & Substitute Parts

Part Overview

The BQ24751RHDR is a multi-chemistry battery charger IC manufactured by Texas Instruments, designed for 2-4 cell battery pack applications with a maximum charging current of 10A and supply voltage up to 24V. This device is classified as "Not For New Designs," indicating it has reached end-of-life status. Finding equivalent or substitute parts becomes necessary for maintenance, repair, and legacy system support where continued component availability is required.

Substiute Parts

BQ24751RHDR

Texas InstrumentsIn Stock: 29016BQ24751RHDR Datasheet

Current PartRFQ

BQ24751RHDT

Texas InstrumentsIn Stock: 1064BQ24751RHDT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The BQ24751RHDT qualifies as a parametric equivalent substitute based on the following criteria:

Identical Electrical Parameters:

• Battery chemistry support: Multi-Chemistry
• Cell count range: 2 ~ 4
• Maximum charging current: 10A
• Maximum battery pack voltage: 18.048V
• Maximum supply voltage: 24V
• Fault protection: Over Current, Over Voltage
• Operating temperature range: -55°C ~ 125°C (TJ)

Identical Mechanical Parameters:

• Package type: 28-VFQFN Exposed Pad
• Mounting type: Surface Mount
• Base product number: BQ24751

Compliance Equivalence:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 2 (1 Year)
• REACH Status: REACH Unaffected
• ECCN: EAR99
• HTSUS: 8542.39.0001

The only difference between these parts is the packaging format: BQ24751RHDR is supplied in standard packaging, while BQ24751RHDT is supplied in Tape & Reel (TR) format. This distinction affects logistics and handling but does not impact electrical or mechanical functionality.

Parameter Comparison

Engineering Selection Recommendations

Both BQ24751RHDR and BQ24751RHDT are classified as "Not For New Designs" by Texas Instruments. Selection between these parts should be based on the following factors:

Packaging Availability: The BQ24751RHDT in Tape & Reel format is suitable for automated assembly processes and high-volume production environments. The BQ24751RHDR in standard packaging is appropriate for manual assembly, prototyping, or low-volume applications.

Compliance Requirements: Both parts meet ROHS3 compliance, REACH unaffected status, and identical moisture sensitivity specifications. Either part satisfies equivalent regulatory and environmental requirements.

Inventory Considerations: Current stock levels differ between the two variants. Selection should account for project timeline and procurement lead times.

Pin-for-Pin Compatibility: Both parts share identical electrical characteristics, package dimensions, and pinout configuration, ensuring direct substitution at the PCB level without design modifications.

Frequently Asked Questions (FAQ)

Q: Can BQ24751RHDT be used as a direct replacement for BQ24751RHDR?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format (standard versus Tape & Reel). Direct substitution is possible without PCB redesign or firmware changes.

Q: What is the significance of the packaging difference between these parts?

A: BQ24751RHDR uses standard packaging suitable for manual handling and small-quantity orders. BQ24751RHDT uses Tape & Reel packaging optimized for automated pick-and-place assembly equipment. The die and electrical performance are identical.

Q: Are there any thermal or performance differences between these substitutes?

A: No. Both parts operate across the identical temperature range (-55°C ~ 125°C TJ) and deliver the same maximum charging current (10A) and voltage specifications.

Q: Why is this part marked "Not For New Designs"?

A: This designation indicates the product has reached end-of-life status at Texas Instruments. New designs should evaluate current-generation charger ICs. However, these parts remain suitable for legacy system maintenance and repair applications.

Q: Do both parts require identical PCB layout and thermal management?

A: Yes. Both parts use the 28-VFQFN package with exposed pad. PCB layout, thermal vias, and component placement requirements are identical between BQ24751RHDR and BQ24751RHDT.

Q: Are there any compliance or certification differences?

A: No. Both parts carry identical RoHS3 compliance, REACH unaffected status, and moisture sensitivity ratings. Regulatory and environmental certifications are equivalent.