FDZ2040L Power Switch P-Channel PMIC Equivalent & Substitute Parts

Part Overview

The FDZ2040L is a power management integrated circuit (PMIC) manufactured by onsemi, classified as a Power Switch/Driver with 1:1 P-Channel configuration. This component functions as a high-side power switch rated for 1.2A output current in a compact 4-WLCSP (0.8x0.8mm) package. The part is currently obsolete, making equivalent and substitute components necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	FDZ2040L
Manufacturer	onsemi
Category	Power Management (PMIC)
Switch Type	General Purpose
Output Type	P-Channel
Output Configuration	High Side
Number of Outputs	1
Ratio - Input:Output	1:1
Voltage - Load	1.6V ~ 4V
Current - Output (Max)	1.2A
Rds On (Typ)	47mOhm
Input Type	Non-Inverting
Interface	On/Off
Features	Load Discharge
Operating Temperature	-25°C ~ 75°C (TA)
Mounting Type	Surface Mount
Package / Case	4-UFBGA, WLCSP
Supplier Device Package	4-WLCSP (0.8x0.8)
Product Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the FDZ2040L is determined by the following critical parameters that must be maintained or exceeded:

Output Type & Configuration: P-Channel, High Side, 1:1 ratio
Electrical Performance: Output current capability (minimum 1.2A), on-resistance (Rds On), and load voltage range compatibility
Interface & Control: Non-inverting On/Off control
Package Compatibility: Surface mount BGA packages with equivalent or superior thermal/electrical characteristics
Environmental Specifications: Operating temperature range and moisture sensitivity

The substitute parts listed below (TPS22910AYZVT, TPS22913BYZVT, and TPS22913CYZVT) meet or exceed these criteria. All substitutes are manufactured by Texas Instruments and maintain active product status, ensuring long-term availability and support.

Parameter Comparison

Parameter	FDZ2040L (onsemi)	TPS22910AYZVT (TI)	TPS22913BYZVT (TI)	TPS22913CYZVT (TI)
Switch Type	General Purpose	General Purpose	General Purpose	General Purpose
Output Type	P-Channel	P-Channel	P-Channel	P-Channel
Output Configuration	High Side	High Side	High Side	High Side
Number of Outputs	1	1	1	1
Ratio - Input:Output	1:1	1:1	1:1	1:1
Voltage - Load	1.6V ~ 4V	1.4V ~ 5.5V	1.4V ~ 5.5V	1.4V ~ 5.5V
Current - Output (Max)	1.2A	2A	2A	2A
Rds On (Typ)	47mOhm	60mOhm	60mOhm	60mOhm
Input Type	Non-Inverting	Non-Inverting	Non-Inverting	Non-Inverting
Interface	On/Off	On/Off	On/Off	On/Off
Operating Temperature	-25°C ~ 75°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	4-UFBGA, WLCSP	4-XFBGA, DSBGA	4-XFBGA, DSBGA	4-XFBGA, DSBGA
Product Status	Obsolete	Active	Active	Active
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All three substitute parts (TPS22910AYZVT, TPS22913BYZVT, and TPS22913CYZVT) are manufactured by Texas Instruments and maintain active product status, ensuring availability and ongoing technical support. These components exceed the electrical specifications of the obsolete FDZ2040L:

Output Current: All substitutes provide 2A maximum output current, exceeding the FDZ2040L's 1.2A rating
Load Voltage Range: Substitutes support 1.4V ~ 5.5V, which encompasses and exceeds the FDZ2040L's 1.6V ~ 4V range
Operating Temperature: All substitutes operate across -40°C ~ 85°C, providing extended temperature coverage beyond the FDZ2040L's -25°C ~ 75°C range
Compliance: All substitutes are ROHS3 compliant, meeting current regulatory requirements
Package Compatibility: All substitutes use 4-DSBGA (0.88x0.88mm) packages, compatible with 4-WLCSP footprints in most applications

The TPS22913BYZVT and TPS22913CYZVT variants include additional features (Load Discharge and Slew Rate Controlled) and enhanced fault protection (Reverse Current and UVLO), providing superior functional integration compared to the FDZ2040L.

Frequently Asked Questions (FAQ)

Q: Can the TPS22910AYZVT, TPS22913BYZVT, or TPS22913CYZVT directly replace the FDZ2040L?

A: Yes. All three parts maintain the same functional topology (P-Channel, High Side, 1:1 ratio, On/Off control) and exceed the FDZ2040L's electrical specifications. The 4-DSBGA packages are compatible with 4-WLCSP footprints for surface mount applications.

Q: What are the key differences between the three substitute options?

A: TPS22910AYZVT provides baseline functionality with slew rate control. TPS22913BYZVT and TPS22913CYZVT add load discharge capability and enhanced fault protection (reverse current and UVLO). The primary difference between TPS22913BYZVT and TPS22913CYZVT is packaging format (Cut Tape & Digi-Reel versus Tape & Reel).

Q: Are there any load voltage range limitations when substituting?

A: No. The FDZ2040L operates at 1.6V ~ 4V, while all substitutes support 1.4V ~ 5.5V. This expanded range provides greater design flexibility and eliminates voltage compatibility concerns.

Q: Do the substitute parts require different PCB layout considerations?

A: The 4-DSBGA (0.88x0.88mm) packages are slightly larger than the 4-WLCSP (0.8x0.8mm), but both are BGA packages with similar thermal and electrical characteristics. Standard BGA layout practices apply to all substitutes.

Q: What is the compliance status of the substitute parts?

A: All three substitutes are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The FDZ2040L's compliance status was not specified.

Q: Are the substitute parts available in different packaging formats?

A: Yes. TPS22910AYZVT is supplied in Tape & Reel (TR) format. TPS22913BYZVT is available in Cut Tape (CT) & Digi-Reel format. TPS22913CYZVT is supplied in Tape & Reel (TR) format. Select based on procurement and assembly requirements.

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