LP3918TLX/NOPB Equivalent & Substitute Parts

Part Overview

The LP3918TLX/NOPB is a lithium-ion battery charger IC manufactured by Texas Instruments, designed for single-cell battery management applications. This component operates as a constant-current/constant-voltage charger with programmable charging current up to 950mA and I2C interface control. The part is currently classified as obsolete, necessitating identification of equivalent alternatives for ongoing design support and production continuity.

Substiute Parts

LP3918TLX/NOPB

Texas InstrumentsIn Stock: 340327LP3918TLX/NOPB Datasheet

Current PartRFQ

LP3918TL-A/NOPB

Texas InstrumentsIn Stock: 1875LP3918TL-A/NOPB Datasheet

Parametric EquivalentRFQ

LP3918TL/NOPB

Texas InstrumentsIn Stock: 1376LP3918TL/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LP3918TLX/NOPB is determined by strict equivalence across the following critical parameters:

• Base product number (LP3918 series)
• Battery chemistry (Lithium Ion)
• Maximum charging current (950mA)
• Battery pack voltage (4.2V)
• Supply voltage maximum (6V)
• Interface protocol (I2C)
• Fault protection mechanism (Reverse Current)
• Operating temperature range (-40°C ~ 85°C)
• Package type (25-WFBGA)
• Surface mount mounting type

All identified substitutes maintain identical electrical and thermal specifications. Variations exist only in product status, packaging format, and moisture sensitivity level documentation.

Parameter Comparison

Engineering Selection Recommendations

For applications currently using the LP3918TLX/NOPB, the LP3918TL-A/NOPB is the primary substitute. This variant maintains all critical electrical parameters and is designated as Active product status, ensuring long-term availability and manufacturing support.

The LP3918TL/NOPB provides an alternative with identical electrical specifications and ROHS3 compliance. However, this part is classified as Not For New Designs, limiting its suitability for new development efforts.

Both substitutes are manufactured by Texas Instruments and share the LP3918 base product number, ensuring functional compatibility within the specified parameter envelope. Selection between LP3918TL-A/NOPB and LP3918TL/NOPB should be based on procurement requirements, packaging format availability, and design phase status.

Frequently Asked Questions (FAQ)

Q: Can LP3918TL-A/NOPB directly replace LP3918TLX/NOPB in existing designs?

A: Yes. Both parts share identical electrical specifications including charging current (950mA), battery voltage (4.2V), supply voltage (6V), I2C interface, and reverse current protection. The LP3918TL-A/NOPB is the recommended substitute due to its Active product status.

Q: What is the difference between LP3918TL/NOPB and LP3918TL-A/NOPB?

A: Both are parametric equivalents with identical electrical performance. The primary differences are product status (LP3918TL/NOPB is Not For New Designs; LP3918TL-A/NOPB is Active) and packaging format availability. For new designs, LP3918TL-A/NOPB is preferred.

Q: Are all three parts ROHS3 compliant?

A: LP3918TLX/NOPB and LP3918TL/NOPB are confirmed ROHS3 compliant. RoHS status for LP3918TL-A/NOPB is not specified in available documentation.

Q: Does packaging format affect electrical performance?

A: No. Packaging format (Bulk, Cut Tape, Tape & Reel) affects only procurement and assembly logistics. All variants maintain identical electrical characteristics and 25-WFBGA package type.

Q: What is the operating temperature range for all substitutes?

A: LP3918TLX/NOPB and LP3918TL/NOPB operate across -40°C to 85°C (TA). Operating temperature for LP3918TL-A/NOPB is not specified in provided data.