MP26121DQ-LF-P Equivalent & Substitute Parts

Part Overview

The MP26121DQ-LF-P is a lithium ion/polymer battery charger IC manufactured by Monolithic Power Systems, designed for single-cell battery charging applications. This active product operates as a constant-current programmable charger with integrated over-voltage fault protection and programmable timer functionality. The device is housed in a 10-QFN (3x3) package with exposed pad and is supplied in Tape & Reel packaging. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the product line, enabling component interchangeability in design and procurement scenarios.

Substiute Parts

MP26121DQ-LF-P

Monolithic Power SystemsIn Stock: 1329MP26121DQ-LF-P Datasheet

Current PartRFQ

MP2605DQ-LF-Z

Monolithic Power Systems Inc.In Stock: 25479MP2605DQ-LF-Z Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MP26121DQ-LF-P is determined by strict equivalence across the following critical parameters:

Battery chemistry and cell configuration (Lithium Ion/Polymer, single-cell) Maximum charging current (1A) Battery pack voltage specification (4.2V) Maximum supply voltage (6.5V) Operating temperature range (-40°C ~ 85°C) Package type and form factor (10-VFDFN Exposed Pad, Surface Mount) Programmable charging current and timer functionality Over-voltage fault protection capability Compliance certifications (ROHS3, MSL Level 1)

The MP2605DQ-LF-Z meets all these criteria and is classified as a parametric equivalent. Packaging format differs (Cut Tape versus Tape & Reel), but electrical and mechanical specifications remain identical, permitting direct substitution in circuit design and manufacturing applications.

Parameter Comparison

Engineering Selection Recommendations

Both MP26121DQ-LF-P and MP2605DQ-LF-Z are active products from Monolithic Power Systems with identical electrical specifications and compliance certifications. Selection between these parts is determined by packaging and procurement requirements rather than functional capability.

MP26121DQ-LF-P is supplied in Tape & Reel format, suitable for automated assembly processes requiring continuous reel-fed component delivery. MP2605DQ-LF-Z is supplied in Cut Tape format, appropriate for lower-volume applications or manual assembly workflows. Both parts maintain ROHS3 compliance, REACH unaffected status, and MSL Level 1 moisture sensitivity rating, permitting use in equivalent environmental and regulatory contexts.

Frequently Asked Questions (FAQ)

Q: Can MP2605DQ-LF-Z replace MP26121DQ-LF-P in production?

A: Yes. Both parts are electrically and mechanically equivalent across all specified parameters. The primary difference is packaging format (Cut Tape versus Tape & Reel). Substitution is valid provided the receiving assembly process accommodates the packaging format.

Q: Are there differences in charging performance between these parts?

A: No. Both parts deliver identical charging current (1A maximum), battery pack voltage (4.2V), supply voltage tolerance (6.5V maximum), and programmable timer functionality. Operating temperature range and fault protection specifications are identical.

Q: What is the significance of the packaging difference?

A: Tape & Reel packaging is optimized for high-volume automated pick-and-place assembly. Cut Tape packaging is suitable for lower-volume or manual assembly operations. The electrical and mechanical form factor remain unchanged.

Q: Are compliance certifications identical?

A: Yes. Both parts carry ROHS3 compliance, REACH unaffected status, and MSL Level 1 rating. No additional qualification or testing is required when substituting between these parts in equivalent applications.

Q: Can these parts be used interchangeably in the same PCB design?

A: Yes. The 10-VFDFN Exposed Pad package footprint, pin configuration, and electrical interface are identical. No PCB layout or schematic modifications are required.