FPF2026 Equivalent & Substitute Parts

Part Overview

The FPF2026 is a power switch/driver IC featuring a 1:1 P-Channel configuration rated for 100mA output current in a 6-WLCSP package. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The FPF2026 operates across a load voltage range of 1.6V to 5.5V with integrated current limiting, over-temperature protection, and UVLO fault protection mechanisms.

Substiute Parts

FPF2026

onsemiIn Stock: 1060FPF2026 Datasheet

Current PartRFQ

TCK22891G,LF

Toshiba Semiconductor and StorageIn Stock: 30123TCK22891G,LF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FPF2026 is determined by the following critical parameters:

• Functional Architecture: 1:1 P-Channel high-side power switch configuration with on/off control interface
• Output Current Capability: Minimum 100mA to meet or exceed the original specification
• Load Voltage Range: Compatibility within 1.6V to 5.5V operating window
• Package Type: Surface mount 6-pin WLCSP/UFBGA form factor for PCB footprint compatibility
• Fault Protection: Current limiting and over-temperature protection as baseline requirements
• Operating Temperature Range: -40°C to 85°C ambient operation

The TCK22891G,LF from Toshiba Semiconductor and Storage qualifies as a direct substitute based on these parameters. This part maintains the same functional topology, package family, and operating temperature range while offering enhanced electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The TCK22891G,LF represents a functionally equivalent substitute for the obsolete FPF2026 based on the following factors:

Product Status and Availability: The FPF2026 is classified as obsolete, whereas the TCK22891G,LF maintains active production status with 30,100 units in current inventory. This ensures long-term supply chain continuity and design support.

Electrical Performance: The Toshiba substitute exceeds the original specification in output current capacity (400mA versus 100mA) and provides superior on-resistance characteristics (31mOhm versus 215mOhm). These improvements deliver enhanced thermal efficiency and reduced power dissipation in the application circuit.

Regulatory and Compliance Alignment: Both parts share identical REACH status (REACH Unaffected), ECCN classification (EAR99), and moisture sensitivity level (MSL 1). The Toshiba part carries RoHS3 compliance certification, meeting modern environmental standards.

Package Considerations: Both parts utilize the 6-pin WLCSP/UFBGA package family. However, the physical footprint dimensions differ (0.96x1.66mm for FPF2026 versus 0.80x1.2mm for TCK22891G,LF). PCB layout verification is required to confirm footprint compatibility with existing designs.

Fault Protection Differences: The FPF2026 includes UVLO (Under-Voltage Lock-Out) protection, while the TCK22891G,LF incorporates load discharge functionality. Circuit design review is necessary to determine whether UVLO functionality is critical to the application or whether load discharge provides equivalent system-level protection.

Frequently Asked Questions (FAQ)

Q: Can the TCK22891G,LF directly replace the FPF2026 without PCB modifications?

A: The TCK22891G,LF maintains the same 6-pin WLCSP package family and pinout configuration as the FPF2026. However, the physical footprint dimensions differ (0.80x1.2mm versus 0.96x1.66mm). PCB layout verification is required to confirm whether the smaller Toshiba footprint is compatible with existing pad patterns and routing. In many cases, the smaller footprint may be accommodated without layout changes, but this must be validated against your specific PCB design.

Q: What is the significance of the higher output current rating on the TCK22891G,LF?

A: The Toshiba substitute is rated for 400mA maximum output current compared to the FPF2026's 100mA specification. This higher current capability provides design margin and allows the substitute to handle transient current demands without exceeding rated limits. The application circuit will operate safely within the original 100mA design envelope while benefiting from improved thermal headroom.

Q: Does the absence of UVLO protection on the TCK22891G,LF affect system reliability?

A: The FPF2026 includes UVLO (Under-Voltage Lock-Out) protection, which the TCK22891G,LF does not provide. UVLO prevents switch operation during low supply voltage conditions. The Toshiba part includes load discharge functionality instead. System-level evaluation is required to determine whether UVLO is essential to your application or whether external supply voltage monitoring provides equivalent protection.

Q: Are there any thermal or power dissipation advantages to using the TCK22891G,LF?

A: The TCK22891G,LF exhibits significantly lower on-resistance (31mOhm typical versus 215mOhm typical), resulting in reduced power dissipation and improved thermal performance. For applications operating at or near the 100mA current limit, this lower on-resistance translates to lower junction temperatures and extended component reliability margins.

Q: What is the load voltage operating range for each part?

A: The FPF2026 operates across a load voltage range of 1.6V to 5.5V. The TCK22891G,LF extends this range to 1.4V to 5.5V, providing compatibility with lower voltage applications. Both parts are suitable for standard 3.3V and 5V logic supply rails.

Q: Are both parts compliant with current environmental and export regulations?

A: Both the FPF2026 and TCK22891G,LF share identical REACH status (REACH Unaffected) and ECCN classification (EAR99). The Toshiba substitute additionally carries RoHS3 compliance certification. Both parts maintain MSL 1 (Unlimited) moisture sensitivity level, indicating no special storage or handling requirements.