FPF1103 Equivalent & Substitute Parts

Part Overview

The FPF1103 is an obsolete P-Channel power switch/driver manufactured by onsemi, rated for 1.2A output current in a 4-WLCSP (0.96x0.96) package. This component operates as a high-side switch with on/off control interface, designed for general-purpose power management applications with load voltages from 1.2V to 4V. Due to its obsolete product status, direct replacement with active alternatives is necessary for new designs and ongoing production support.

Substiute Parts

FPF1103

onsemiIn Stock: 2994FPF1103 Datasheet

Current PartRFQ

NCP333FCT2G

onsemiIn Stock: 59227NCP333FCT2G Datasheet

DirectRFQ

TPS22906YZVR

Texas InstrumentsIn Stock: 15222TPS22906YZVR Datasheet

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TPS22907YZTR

Texas InstrumentsIn Stock: 5112TPS22907YZTR Datasheet

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TPS22907YZTT

Texas InstrumentsIn Stock: 2188TPS22907YZTT Datasheet

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TPS22910AYZVR

Texas InstrumentsIn Stock: 62146TPS22910AYZVR Datasheet

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TPS22910AYZVT

Texas InstrumentsIn Stock: 4248TPS22910AYZVT Datasheet

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TPS22913BYZVT

Texas InstrumentsIn Stock: 1274TPS22913BYZVT Datasheet

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TPS22913CYZVT

Texas InstrumentsIn Stock: 1810TPS22913CYZVT Datasheet

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TPS22930AYZVR

Texas InstrumentsIn Stock: 35266TPS22930AYZVR Datasheet

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TPS22930AYZVT

Texas InstrumentsIn Stock: 4299TPS22930AYZVT Datasheet

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TPS22934YZVR

Texas InstrumentsIn Stock: 20336TPS22934YZVR Datasheet

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TPS22934YZVT

Texas InstrumentsIn Stock: 1544TPS22934YZVT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the FPF1103 is determined by the following critical parameters:

• Output Configuration: High-side P-Channel switch (non-negotiable)
• Ratio: 1:1 input-to-output (non-negotiable)
• Interface: On/Off control (non-negotiable)
• Output Current Capability: Minimum 1.2A required
• Load Voltage Range: Must support 1.2V ~ 4V minimum
• Rds On: Lower or equivalent values acceptable
• Package Type: 4-WLCSP or 4-DSBGA (both BGA variants, pin-compatible in function)
• Operating Temperature: -40°C ~ 85°C minimum
• Product Status: Active or Not For New Designs acceptable; Obsolete not acceptable

Substitute parts are grouped into two categories:

Direct Substitutes (Active Status): Parts meeting or exceeding all electrical parameters with active product status.

Functional Alternatives (Not For New Designs): Parts meeting electrical requirements but with legacy product status; suitable for replacement in existing designs.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation for New Designs: TPS22930AYZVR or TPS22930AYZVT (Texas Instruments)

These parts provide the closest electrical match to the FPF1103 with identical Rds On (35mOhm), superior output current capability (2A vs 1.2A), extended load voltage range (1.4V ~ 5.5V), and active product status. Both are ROHS3 compliant. The primary difference is packaging format: AYZVR (Cut Tape & Digi-Reel) versus AYZVT (Tape & Reel).

Secondary Recommendation for New Designs: NCP333FCT2G (onsemi)

Maintains onsemi manufacturer continuity with active product status and ROHS3 compliance. Offers 1.5A output current and extended load voltage range (1.2V ~ 5.5V). Package is 4-WLCSP (0.76x0.76), slightly smaller than the original FPF1103 (0.96x0.96), requiring PCB layout verification.

Alternative for Existing Designs: TPS22910AYZVR or TPS22910AYZVT (Texas Instruments)

Active status with 2A output current and ROHS3 compliance. Rds On is 60mOhm (higher than FPF1103), acceptable for applications not requiring minimum on-resistance. Load voltage range extends to 5.5V.

Not Recommended for New Designs: TPS22906YZVR, TPS22907YZTR, TPS22907YZTT

These parts carry "Not For New Designs" product status. TPS22906YZVR has insufficient output current (500mA < 1.2A required). TPS22907 variants provide only 1A output current, below the FPF1103 specification.

Frequently Asked Questions (FAQ)

Q: Can TPS22930AYZVR directly replace FPF1103 without PCB modifications?

A: Electrical substitution is valid. Both are 4-pin BGA packages with identical pin functionality (high-side P-Channel switch, on/off control). However, package dimensions differ: TPS22930 is 4-DSBGA (0.88x0.88) versus FPF1103 4-WLCSP (0.96x0.96). PCB footprint verification is required; BGA ball pitch and placement may differ.

Q: Why does NCP333FCT2G have higher Rds On (45mOhm) than FPF1103 (35mOhm)?

A: Rds On variation reflects different silicon process technology and die design between manufacturers. For the FPF1103 application (1.2A maximum), the 45mOhm value remains acceptable. Power dissipation at 1.2A would be approximately 64.8mW (1.2² × 0.045), comparable to the original 50.4mW (1.2² × 0.035).

Q: Is the TPS22930AYZVT suitable for applications requiring the full 1.2V minimum load voltage?

A: Yes. TPS22930AYZVT supports 1.4V ~ 5.5V load voltage range, which encompasses the FPF1103 range of 1.2V ~ 4V. The 1.4V minimum is slightly higher than the original 1.2V; applications operating below 1.4V require alternative selection.

Q: What is the difference between TPS22910AYZVR and TPS22910AYZVT?

A: Both are identical electrically (2A, 60mOhm, 1.4V ~ 5.5V). The difference is packaging format: AYZVR is Cut Tape & Digi-Reel; AYZVT is Tape & Reel. Selection depends on procurement and assembly process requirements.

Q: Why are TPS22907 variants listed as "Not For New Designs"?

A: These parts are legacy products maintained for existing design support only. Texas Instruments recommends TPS22910 or TPS22930 series for new applications. The TPS22907 1A output current also falls below the FPF1103 1.2A specification.

Q: Does the FPF1103 obsolescence affect supply chain availability?

A: Yes. The FPF1103 is obsolete with no new manufacturing. Current inventory (2930 pcs) represents remaining stock only. Active alternatives (NCP333FCT2G, TPS22930AYZVR/AYZVT, TPS22910AYZVR/AYZVT) have significantly higher inventory levels (4,200 to 62,100 pcs) and ongoing production support.