LM3420AM5X-8.4 Equivalent & Substitute Parts

Part Overview

The LM3420AM5X-8.4 is a lithium-ion battery charger IC manufactured by Texas Instruments, designed for 2-cell battery pack applications with an 8.4V output voltage. This integrated circuit operates within a -40°C to 85°C temperature range and supports a maximum supply voltage of 20V with a maximum charging current of 1A. The device is packaged in SC-74A (SOT-23-5) surface mount configuration.

The LM3420AM5X-8.4 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this charger IC.

Substiute Parts

LM3420AM5X-8.4

Texas InstrumentsIn Stock: 4790LM3420AM5X-8.4 Datasheet

Current PartRFQ

LM3420AM5-8.4/NOPB

Texas InstrumentsIn Stock: 2864LM3420AM5-8.4/NOPB Datasheet

Parametric EquivalentRFQ

LM3420M5X-8.4/NOPB

Texas InstrumentsIn Stock: 4374LM3420M5X-8.4/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM3420AM5X-8.4 are identified based on strict parametric equivalence across the following critical specifications:

• Battery Chemistry: Lithium Ion
• Number of Cells: 2
• Battery Pack Voltage: 8.4V
• Voltage - Supply (Max): 20V
• Operating Temperature Range: -40°C ~ 85°C (TA)
• Package / Case: SC-74A, SOT-753
• Supplier Device Package: SOT-23-5
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The substitute parts listed below maintain identical electrical and mechanical specifications across all provided parameters, ensuring functional and physical compatibility with the original LM3420AM5X-8.4 design.

Parameter Comparison

Engineering Selection Recommendations

Both LM3420AM5-8.4/NOPB and LM3420M5X-8.4/NOPB are active product status alternatives to the obsolete LM3420AM5X-8.4. These substitute parts maintain full parametric equivalence across all critical electrical and mechanical specifications.

LM3420AM5-8.4/NOPB is supplied in Tape & Reel (TR) packaging with 2800 units currently in stock inventory. This part carries ROHS3 compliance and MSL Level 1 rating, matching the original specification.

LM3420M5X-8.4/NOPB is supplied in Tape & Reel (TR) packaging with 4300 units currently in stock inventory. This part carries ROHS3 compliance and MSL Level 1 rating. The charge current maximum specification is not provided for this variant; however, all other electrical and mechanical parameters remain equivalent.

Both substitutes are manufactured by Texas Instruments and are classified as active products, ensuring continued availability and support for ongoing production requirements.

Frequently Asked Questions (FAQ)

Q: Can LM3420AM5-8.4/NOPB and LM3420M5X-8.4/NOPB be used interchangeably with LM3420AM5X-8.4?

A: Yes. Both substitute parts maintain identical electrical specifications (8.4V battery pack voltage, 20V maximum supply voltage, -40°C to 85°C operating temperature range) and mechanical specifications (SC-74A SOT-23-5 surface mount package). All three parts are ROHS3 compliant with MSL Level 1 rating.

Q: What is the difference between the packaging designations in the part numbers?

A: The LM3420AM5X-8.4 original part does not specify a packaging type. Both substitute parts (LM3420AM5-8.4/NOPB and LM3420M5X-8.4/NOPB) are supplied in Tape & Reel (TR) format, which is standard for high-volume production applications. The physical package remains SC-74A (SOT-23-5) in all cases.

Q: Why is the charge current specification missing for LM3420M5X-8.4/NOPB?

A: The charge current maximum value is not provided in the available data for LM3420M5X-8.4/NOPB. All other electrical parameters, including battery pack voltage, supply voltage, and operating temperature range, are identical to the original part and the other substitute option.

Q: Are there any compliance or regulatory differences between these parts?

A: No. All three parts carry identical compliance certifications: ROHS3 compliant, REACH unaffected, MSL Level 1 (unlimited moisture sensitivity), and the same ECCN and HTSUS classifications.

Q: Which substitute part should be selected for new designs?

A: Both LM3420AM5-8.4/NOPB and LM3420M5X-8.4/NOPB are active products suitable for new designs. Selection may be based on inventory availability, packaging preferences, or supply chain considerations. LM3420M5X-8.4/NOPB currently has higher inventory (4300 units) compared to LM3420AM5-8.4/NOPB (2800 units).