FPF2002 Equivalent & Substitute Parts

Part Overview

The FPF2002 is a P-Channel power switch IC manufactured by onsemi, designed for general-purpose load switching applications. It operates as a 1:1 high-side switch with 50mA maximum output current and is housed in a 5-TSSOP (SC-70-5) package. The device features integrated current limiting, over-temperature protection, and UVLO (Under-Voltage Lock-Out) fault protection with a status flag output.

The FPF2002 is classified as obsolete. Equivalent and substitute parts are available from both onsemi and Texas Instruments that maintain functional compatibility while offering enhanced specifications or active product status.

Substiute Parts

FPF2002

onsemiIn Stock: 65311FPF2002 Datasheet

Current PartRFQ

FPF2003

onsemiIn Stock: 17461FPF2003 Datasheet

Parametric EquivalentRFQ

TPS22942DCKR

Texas InstrumentsIn Stock: 3394TPS22942DCKR Datasheet

MFR RecommendedRFQ

TPS22944DCKR

Texas InstrumentsIn Stock: 20422TPS22944DCKR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following core parameters:

• Output Configuration: High-side P-Channel switch with 1:1 input-to-output ratio
• Package Compatibility: 5-TSSOP (SC-70-5, SOT-353) surface mount
• Load Voltage Range: Minimum 1.8V support required
• Fault Protection: Current limiting, over-temperature, and UVLO protection mandatory
• Interface Type: Non-inverting on/off control

The FPF2002 has two categories of substitutes:

Parametric Equivalent (FPF2003): Identical electrical specifications and same manufacturer series (IntelliMAX™), with active product status.

Manufacturer-Recommended and Similar Alternatives (TPS22942DCKR, TPS22944DCKR): Texas Instruments parts with enhanced current capability (100mA vs. 50mA) and improved on-resistance (400mOhm vs. 700mOhm), maintaining package and protection feature compatibility.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Obsolete Stock Mitigation): FPF2003 is the primary equivalent. It maintains identical electrical specifications and IntelliMAX™ series characteristics while offering active product status and continued supply availability.

For Enhanced Performance Applications: TPS22942DCKR and TPS22944DCKR provide doubled output current capability (100mA) and reduced on-resistance (400mOhm), resulting in lower power dissipation. These parts are suitable for applications requiring higher load current or improved thermal performance. Both maintain the same package footprint and protection feature set.

Compliance Considerations: All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility with the original FPF2002 design.

Temperature Range: Texas Instruments alternatives support extended junction temperature operation (-40°C ~ 125°C TJ) compared to the FPF2002 ambient temperature rating (-40°C ~ 85°C TA), providing additional thermal margin in high-temperature environments.

Frequently Asked Questions (FAQ)

Q: Can FPF2003 be used as a direct drop-in replacement for FPF2002?

A: Yes. FPF2003 is a parametric equivalent with identical electrical specifications, output current rating (50mA), on-resistance (700mOhm), voltage range (1.8V ~ 5.5V), and package (5-TSSOP SC-70-5). The primary difference is product status: FPF2003 is active while FPF2002 is obsolete.

Q: What are the advantages of using TPS22942DCKR or TPS22944DCKR over FPF2003?

A: Both Texas Instruments parts offer doubled maximum output current (100mA vs. 50mA) and improved on-resistance (400mOhm vs. 700mOhm), reducing power dissipation by approximately 43% at full load. They also support extended operating temperature to 125°C junction temperature. All three parts share the same 5-TSSOP package and protection features.

Q: Are the Texas Instruments alternatives pin-compatible with FPF2002?

A: Yes. TPS22942DCKR and TPS22944DCKR use the same 5-TSSOP (SC-70-5, SOT-353) package with identical pinout for high-side P-Channel switch applications.

Q: What is the difference between TPS22942DCKR and TPS22944DCKR?

A: Both parts share identical electrical specifications, current rating (100mA), on-resistance (400mOhm), voltage range (1.62V ~ 5.5V), and operating temperature (-40°C ~ 125°C TJ). TPS22942DCKR includes an auto-restart feature, while TPS22944DCKR does not list this feature in the provided specifications.

Q: Can these parts be used in applications requiring the full 50mA output current of FPF2002?

A: Yes. All substitute parts (FPF2003, TPS22942DCKR, TPS22944DCKR) support at least 50mA output current, with TPS22942DCKR and TPS22944DCKR rated for 100mA, providing additional margin.

Q: Are there any voltage range differences that affect compatibility?

A: FPF2002 and FPF2003 support 1.8V ~ 5.5V load voltage. TPS22942DCKR and TPS22944DCKR support 1.62V ~ 5.5V, providing slightly lower minimum voltage operation. All parts are compatible with standard 3.3V and 5V logic systems.