FPF2302MX Equivalent & Substitute Parts

Part Overview

The FPF2302MX is a Power Management IC (PMIC) manufactured by onsemi, functioning as a power switch/driver with 1:2 output configuration. This P-Channel device delivers 1.1A maximum output current in an 8-SOIC package and is classified as Obsolete. Due to its obsolete status, identifying functionally equivalent substitute parts is essential for design continuity and procurement planning. Substitute parts must maintain compatibility across critical electrical parameters including output configuration, channel type, current rating, and fault protection features.

Substiute Parts

FPF2302MX

onsemiIn Stock: 3293FPF2302MX Datasheet

Current PartRFQ

FPF2303MX

Fairchild SemiconductorIn Stock: 1531FPF2303MX Datasheet

SimilarRFQ

BD2069FJ-MGE2

Rohm SemiconductorIn Stock: 1258BD2069FJ-MGE2 Datasheet

SimilarRFQ

TPS2046BD

Texas InstrumentsIn Stock: 2450TPS2046BD Datasheet

SimilarRFQ

TPS2046BDR

Texas InstrumentsIn Stock: 1969TPS2046BDR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the FPF2302MX is based on the following critical parameters:

• Output Configuration & Channel Type: The main part uses High Side P-Channel output. Substitute parts must maintain High Side output configuration. Channel type (P-Channel vs N-Channel) represents a functional difference; N-Channel substitutes require circuit-level design changes.
• Number of Outputs & Ratio: The 1:2 input-to-output ratio with dual outputs is a core functional requirement.
• Current Rating: Maximum output current of 1.1A establishes the minimum current handling capability.
• Voltage Range: Load voltage range of 1.8V ~ 5.5V defines the operating envelope.
• Fault Protection: Current Limiting (Fixed), Over Temperature, Reverse Current, and UVLO protection are mandatory safety features.
• Package Compatibility: 8-SOIC package ensures mechanical and electrical pin compatibility.
• Operating Temperature: -40°C ~ 85°C (TA) range must be maintained.

Substitute parts are grouped into two categories:

Category A - Direct P-Channel Substitutes (Recommended for Pin-Compatible Replacement):

• FPF2303MX (Fairchild Semiconductor): Active status, P-Channel, 1:2 ratio, 1.1A, identical package
• Maintains identical output type and channel configuration

Category B - N-Channel Substitutes (Functional Equivalents Requiring Design Review):

• BD2069FJ-MGE2 (Rohm Semiconductor): Active status, N-Channel, 1:2 ratio, 3A, automotive qualified
• TPS2046BD / TPS2046BDR (Texas Instruments): Active status, N-Channel, 1:1 ratio, 250mA

N-Channel substitutes require circuit redesign due to inverted logic and different electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (No Circuit Redesign Required):

FPF2303MX is the primary substitute for FPF2302MX. Both devices share identical electrical specifications (P-Channel, 1:2 ratio, 1.1A, 75mOhm Rds On, Non-Inverting input), matching package geometry, and equivalent fault protection. FPF2303MX maintains Active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment.

For Applications Requiring Higher Current Capacity:

BD2069FJ-MGE2 provides 3A output current with 1:2 ratio and N-Channel configuration. This part is automotive-qualified (AEC-Q100) and suitable for designs where increased current handling is acceptable. Circuit redesign is required due to N-Channel topology and Non-Inverting input logic.

For Current-Limited Applications:

TPS2046BD and TPS2046BDR are suitable only for applications where 250mA output current is sufficient. These parts feature 1:1 input-to-output ratio and Inverting input logic, requiring significant circuit redesign. Both are available in different packaging options (Tube and Tape & Reel).

Compliance Considerations:

All substitute parts maintain -40°C ~ 85°C operating temperature range and MSL 1 (Unlimited) moisture sensitivity. FPF2303MX, BD2069FJ-MGE2, TPS2046BD, and TPS2046BDR are all ROHS3 compliant, meeting environmental and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can FPF2303MX be used as a direct drop-in replacement for FPF2302MX?

A: Yes. FPF2303MX shares identical electrical specifications, package dimensions, and pin configuration with FPF2302MX. No circuit modifications are required for substitution.

Q: What is the key difference between P-Channel and N-Channel substitutes?

A: P-Channel devices (FPF2302MX, FPF2303MX) use Non-Inverting input logic, while N-Channel substitutes (BD2069FJ-MGE2, TPS2046BD, TPS2046BDR) use Inverting input logic. This requires circuit-level redesign including control signal inversion and gate drive modifications.

Q: Why do TPS2046BD and TPS2046BDR have lower current ratings?

A: TPS2046 series devices are rated for 250mA maximum output current, compared to 1.1A for FPF2302MX. These parts are suitable only for low-current applications and require design verification to confirm current requirements.

Q: Is BD2069FJ-MGE2 suitable for automotive applications?

A: BD2069FJ-MGE2 carries AEC-Q100 automotive qualification and is suitable for automotive-grade designs. However, its N-Channel topology requires circuit redesign compared to the original P-Channel FPF2302MX.

Q: What packaging options are available for substitute parts?

A: All substitute parts are available in 8-SOIC package format. FPF2303MX is supplied in Bulk packaging, BD2069FJ-MGE2 in Tape & Reel, TPS2046BD in Tube, and TPS2046BDR in Tape & Reel. Package selection depends on procurement volume and assembly requirements.

Q: Are all substitute parts ROHS3 compliant?

A: FPF2303MX, BD2069FJ-MGE2, TPS2046BD, and TPS2046BDR are all ROHS3 compliant. The original FPF2302MX does not specify RoHS status due to its obsolete classification.

Q: What is the input-to-output ratio difference between FPF2302MX and TPS2046 series?

A: FPF2302MX and FPF2303MX feature 1:2 input-to-output ratio (dual independent outputs from single input), while TPS2046BD and TPS2046BDR feature 1:1 ratio. This functional difference affects circuit topology and control logic.