LC709203FXE-03MH Equivalent & Substitute Parts

Part Overview

The LC709203FXE-03MH is a Battery Monitor IC designed for single-cell Lithium Ion applications. Manufactured by onsemi, this component operates across the -40°C to 85°C temperature range and communicates via I2C interface. The device is currently classified as Obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The 9-WLCSP package (1.60x1.76mm) provides a compact surface-mount solution for battery management applications.

Substiute Parts

LC709203FXE-03MH

onsemiIn Stock: 5504LC709203FXE-03MH Datasheet

Current PartRFQ

LC709204FXE-01TBG

onsemiIn Stock: 1054LC709204FXE-01TBG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LC709203FXE-03MH is determined by the following critical parameters:

• Function: Battery Monitor capability for single-cell applications
• Battery Chemistry: Lithium Ion or Lithium Ion/Polymer compatibility
• Number of Cells: Single-cell operation
• Interface: I2C communication protocol
• Operating Temperature Range: -40°C to 85°C minimum coverage
• Mounting Type: Surface Mount technology
• Package Category: WLCSP (Wafer Level Ball Grid Array) form factor
• Regulatory Compliance: ROHS3 and REACH compliance status

The LC709204FXE-01TBG qualifies as a manufacturer-recommended substitute based on matching these core parameters while offering an active product status and enhanced package density (12-WLCSP vs. 9-WLCSP).

Parameter Comparison

Engineering Selection Recommendations

The LC709204FXE-01TBG is the manufacturer-recommended substitute for the obsolete LC709203FXE-03MH. Both components maintain identical operating temperature specifications (-40°C to 85°C), I2C interface compatibility, and regulatory compliance status (ROHS3 Compliant, REACH Unaffected). The LC709204FXE-01TBG offers the advantage of Active product status, ensuring long-term availability and manufacturing support. The package transition from 9-WLCSP to 12-WLCSP represents an increase in pin count and physical dimensions (1.48x1.91mm vs. 1.60x1.76mm), which requires PCB layout evaluation. The expanded battery chemistry support (Lithium Ion/Polymer) in the substitute part provides broader application flexibility while maintaining single-cell operation capability.

Frequently Asked Questions (FAQ)

Q: Can the LC709204FXE-01TBG directly replace the LC709203FXE-03MH without design changes?

A: The I2C interface, operating temperature range, and functional capability are identical. However, the package change from 9-WLCSP to 12-WLCSP requires PCB footprint modification and layout re-evaluation due to different pin counts and physical dimensions.

Q: What is the primary reason for substitution?

A: The LC709203FXE-03MH is classified as Obsolete. The LC709204FXE-01TBG is the manufacturer-recommended active alternative that maintains functional and electrical compatibility.

Q: Are there compliance differences between the two parts?

A: Both parts are ROHS3 Compliant and REACH Unaffected with identical Moisture Sensitivity Level (MSL) ratings of 1 (Unlimited). No compliance disadvantage exists in the substitution.

Q: Does the LC709204FXE-01TBG support Lithium Ion chemistry?

A: Yes. The LC709204FXE-01TBG supports both Lithium Ion and Lithium Ion/Polymer chemistries, providing broader compatibility than the original part which is specified for Lithium Ion only.

Q: What are the package dimension differences?

A: The LC709203FXE-03MH uses 9-WLCSP (1.60x1.76mm), while the LC709204FXE-01TBG uses 12-WLCSP (1.48x1.91mm). The substitute has a slightly smaller footprint area but increased pin count, requiring PCB redesign.