API9221FCG-13 Equivalent & Substitute Parts

Part Overview

The API9221FCG-13 is a lithium ion/polymer battery charger IC manufactured by Diodes Incorporated, designed for single-cell battery charging applications with USB interface connectivity. This component operates as a constant-current charger with programmable charging current up to 1.2A and delivers a 4.2V battery pack voltage. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for new designs and production continuity.

Substiute Parts

API9221FCG-13

Diodes IncorporatedIn Stock: 1142API9221FCG-13 Datasheet

Current PartRFQ

LTC4097EDDB#TRPBF

Analog Devices Inc.In Stock: 1938LTC4097EDDB#TRPBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the API9221FCG-13 is determined by the following critical parameters:

• Battery Chemistry: Lithium Ion/Polymer compatibility
• Charge Current Capability: Maximum 1.2A constant-current charging
• Battery Pack Voltage: 4.2V output specification
• Interface Type: USB connectivity requirement
• Package Compatibility: 12-pin DFN surface mount form factor
• Operating Temperature Range: -40°C to 85°C minimum requirement
• Supply Voltage Tolerance: Maximum supply voltage rating must accommodate 6.7V input

The LTC4097EDDB#TRPBF from Analog Devices Inc. meets these substitution criteria through equivalent electrical specifications and compatible packaging architecture.

Parameter Comparison

Engineering Selection Recommendations

The LTC4097EDDB#TRPBF is the designated substitute for the obsolete API9221FCG-13. Selection is based on:

• Product Status Alignment: The substitute maintains active production status, ensuring long-term availability and supply chain continuity.
• Regulatory Compliance: Both components maintain ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory requirements.
• Electrical Equivalence: Matching charge current capability (1.2A), battery pack voltage (4.2V), and operating temperature range (-40°C to 85°C) ensure functional compatibility.
• Package Compatibility: Both components utilize 12-pin DFN surface mount packages with exposed pads, supporting direct PCB layout reuse with minimal design modification.

The maximum supply voltage specification of the LTC4097EDDB#TRPBF (5.5V) is lower than the API9221FCG-13 (6.7V). Design verification is required to confirm that the application supply voltage does not exceed 5.5V.

Frequently Asked Questions (FAQ)

Q: Can the LTC4097EDDB#TRPBF directly replace the API9221FCG-13 without PCB modifications?

A: The 12-pin DFN package footprints are compatible, supporting direct pin-to-pin substitution. However, the package designations differ slightly (12-UFDFN versus 12-WFDFN). PCB layout verification is necessary to confirm pad alignment and thermal performance.

Q: What is the critical difference between these two parts?

A: The maximum supply voltage specification differs: API9221FCG-13 accepts up to 6.7V, while LTC4097EDDB#TRPBF accepts up to 5.5V. Applications operating above 5.5V supply voltage require design modification or alternative component selection.

Q: Are there any functional differences in charging current programming?

A: Both components support constant-current charging with programmable current capability up to 1.2A maximum. Charging current programming methodology must be verified against respective datasheets to ensure design compatibility.

Q: Does the substitute part support the same operating temperature range?

A: Yes, both components operate across the identical temperature range of -40°C to 85°C (TA), maintaining thermal performance specifications for equivalent applications.

Q: What is the inventory status of the substitute part?

A: The LTC4097EDDB#TRPBF maintains 1900 pieces in new original stock, providing immediate availability for production and development requirements.