FPF1003A Equivalent & Substitute Parts

Part Overview

The FPF1003A is a Power Switch/Driver IC manufactured by onsemi, featuring a 1:1 P-Channel high-side configuration with 2A output capability in a 6-WLCSP package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part operates across a 1.2V to 5.5V load voltage range with slew rate control and is RoHS3 compliant with unlimited moisture sensitivity rating.

Substiute Parts

FPF1003A

onsemiIn Stock: 6707FPF1003A Datasheet

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TCK112G,LF

Toshiba Semiconductor and StorageIn Stock: 30252TCK112G,LF Datasheet

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TPS22921YZPR

Texas InstrumentsIn Stock: 4281TPS22921YZPR Datasheet

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TPS22921YZTR

Texas InstrumentsIn Stock: 4319TPS22921YZTR Datasheet

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TPS22922BYZPR

Texas InstrumentsIn Stock: 54111TPS22922BYZPR Datasheet

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TPS22922YZPR

Texas InstrumentsIn Stock: 6139TPS22922YZPR Datasheet

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TPS22924BYZR

Texas InstrumentsIn Stock: 4249TPS22924BYZR Datasheet

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TPS22924BYZT

Texas InstrumentsIn Stock: 2398TPS22924BYZT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the FPF1003A is determined by the following critical parameters: output type (P-Channel vs. N-Channel), output configuration (high side), 1:1 input-output ratio, maximum output current capability, on-resistance characteristics, load voltage range compatibility, and operating temperature range. The substitute parts are grouped into two categories based on channel type compatibility.

P-Channel Substitutes (Direct Functional Equivalents): Parts maintaining P-Channel output type with 2A current rating and compatible voltage ranges: TPS22921YZPR, TPS22921YZTR, TPS22922BYZPR, and TPS22922YZPR. These parts share identical output current specifications and operating temperature ranges with the FPF1003A.

N-Channel Alternatives (Channel Type Variation): Parts with N-Channel output type but equivalent current handling and high-side configuration: TCK112G,LF, TPS22924BYZR, and TPS22924BYZT. These require circuit topology evaluation due to channel type difference.

Parameter Comparison

Engineering Selection Recommendations

P-Channel Direct Substitutes (TPS22921YZPR, TPS22921YZTR, TPS22922BYZPR, TPS22922YZPR): These Texas Instruments parts maintain P-Channel output type and 2A current rating with active product status. All are RoHS3 compliant with MSL 1 rating. The primary consideration is load voltage range: these parts operate at 0.9V to 3.6V, which is narrower than the FPF1003A's 1.2V to 5.5V range. Selection between TPS22921 and TPS22922 series depends on load discharge and slew rate control feature requirements. Packaging differs from the original (DSBGA vs. WLCSP), requiring PCB layout verification.

N-Channel Alternative (TCK112G,LF): This Toshiba part offers N-Channel output with 3A current capability and load voltage range of 1.1V to 5.5V, closely matching the original voltage specification. The higher current rating and lower on-resistance (8.3mOhm) provide performance margin. Channel type change requires circuit topology evaluation. Package type matches the original (WLCSP).

N-Channel Alternatives (TPS22924BYZR, TPS22924BYZT): Texas Instruments N-Channel parts with 2A current rating and lower voltage range (0.75V to 3.6V). On-resistance of 18.3mOhm is closer to the original specification than the TPS2292x series. Channel type change requires circuit topology evaluation. Packaging is DSBGA, differing from the original.

All substitute parts maintain the required operating temperature range (-40°C to 85°C) and compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can I directly replace FPF1003A with a TPS2292x series part? A: TPS2292x series parts (TPS22921, TPS22922) maintain P-Channel output type and 2A current rating, making them functionally compatible. However, the load voltage range is reduced to 0.9V to 3.6V compared to the original 1.2V to 5.5V. Verify your application operates within this narrower range. Package type changes from WLCSP to DSBGA, requiring PCB layout modification.

Q: What is the difference between TPS22921 and TPS22922 series? A: Both series are P-Channel, 2A, 6-DSBGA parts with identical electrical specifications. TPS22922 includes load discharge and slew rate control features, while TPS22921 includes only slew rate control. Select based on your circuit's load discharge requirements.

Q: Can I use an N-Channel part as a substitute? A: N-Channel substitutes (TCK112G,LF, TPS22924BYZR, TPS22924BYZT) require circuit topology evaluation due to the channel type difference. High-side N-Channel operation differs from P-Channel operation. Consult your circuit design to determine compatibility.

Q: Why does TCK112G,LF have higher current rating (3A) than the original? A: TCK112G,LF is rated for 3A maximum output current, exceeding the FPF1003A's 2A specification. This provides additional current margin and is not a limitation for applications requiring 2A or less. The lower on-resistance (8.3mOhm) also improves thermal performance.

Q: Are all substitute parts RoHS3 compliant? A: All listed substitute parts are RoHS3 compliant with MSL 1 (unlimited) moisture sensitivity rating, matching the original part's compliance status.

Q: What packaging considerations apply to substitution? A: The FPF1003A uses 6-WLCSP packaging. Texas Instruments substitutes use 6-DSBGA packaging, requiring PCB layout redesign. TCK112G,LF maintains 6-WLCSP packaging, allowing direct footprint compatibility. Verify pinout compatibility before PCB modification.

Q: Which substitute offers the best on-resistance performance? A: TCK112G,LF provides the lowest on-resistance at 8.3mOhm, followed by TPS2292x series at 14mOhm, and TPS22924 series at 18.3mOhm. Lower on-resistance reduces power dissipation and heat generation.