PI5PD2557ZCEX Equivalent & Substitute Parts

Part Overview

The PI5PD2557ZCEX is a Power Switch/Driver IC manufactured by Diodes Incorporated, designed for 1:1 N-Channel high-side switching applications with 5A output capability. This component is classified as a USB Switch within the Power Management (PMIC) category and operates across a 2.5V to 5.5V load voltage range. The product is currently in Obsolete status, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

PI5PD2557ZCEX

Diodes IncorporatedIn Stock: 15424PI5PD2557ZCEX Datasheet

Current PartRFQ

TPS2557DRBR

Texas InstrumentsIn Stock: 26113TPS2557DRBR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PI5PD2557ZCEX is determined by the following critical parameters:

• Switching Configuration: 1:1 ratio, N-Channel, high-side output topology
• Electrical Performance: 5A maximum output current, 22mOhm typical on-resistance
• Load Voltage Range: Minimum 2.5V support with compatibility across the operating envelope
• Control Interface: On/Off non-inverting input control
• Protection Features: Current limiting (adjustable), over-temperature, and UVLO fault protection
• Package Form Factor: Surface mount 8-pin DFN package with exposed pad
• Compliance: ROHS3 compliance and EAR99 classification

The TPS2557DRBR from Texas Instruments meets all substitution criteria within these parameters. Both devices share identical switching ratios, output configurations, current ratings, on-resistance specifications, and protection mechanisms. Package compatibility is maintained through equivalent 8-pin DFN form factors.

Parameter Comparison

Engineering Selection Recommendations

The TPS2557DRBR is a direct functional substitute for the PI5PD2557ZCEX based on electrical and mechanical parameter equivalence. Key selection factors include:

Product Status: The PI5PD2557ZCEX is obsolete, while the TPS2557DRBR maintains active production status, ensuring long-term availability and supply chain stability.

Compliance Certifications: Both devices maintain ROHS3 compliance and EAR99 classification, satisfying regulatory requirements for equivalent applications.

Electrical Compatibility: Identical 5A output current, 22mOhm on-resistance, and protection feature sets ensure drop-in functionality. The TPS2557DRBR supports an extended load voltage range (2.5V ~ 6.5V versus 2.5V ~ 5.5V), providing additional operational margin.

Thermal Performance: The TPS2557DRBR operates to 125°C junction temperature compared to 85°C ambient for the original part, offering improved thermal headroom in demanding applications.

Package Compatibility: Both devices use 8-pin DFN surface-mount packages with exposed pads. Physical footprints are equivalent, supporting direct PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can the TPS2557DRBR directly replace the PI5PD2557ZCEX on existing PCBs?

A: Yes. Both devices share identical pin configurations, package form factors (8-pin DFN), and electrical specifications for switching performance. No circuit modifications are required.

Q: What are the key differences between these parts?

A: The TPS2557DRBR offers an extended load voltage range (6.5V maximum versus 5.5V) and higher junction temperature rating (125°C versus 85°C ambient). The TPS2557DRBR also includes slew rate control as an additional feature. Both maintain identical current handling, on-resistance, and protection mechanisms.

Q: Are there package considerations for substitution?

A: Both parts use 8-pin DFN packages with exposed pads. The PI5PD2557ZCEX uses 8-WDFN while the TPS2557DRBR uses 8-VDFN. These designations reflect minor manufacturing variations but maintain electrical and mechanical compatibility for PCB assembly.

Q: Does the TPS2557DRBR support the same fault protection features?

A: Yes. Both devices include adjustable current limiting, over-temperature protection, and UVLO (Under-Voltage Lock-Out) functionality. The TPS2557DRBR adds slew rate control capability.

Q: What is the impact of the extended voltage range on the TPS2557DRBR?

A: The TPS2557DRBR supports load voltages up to 6.5V, compared to 5.5V for the original part. This provides additional operational margin and compatibility with higher voltage bus systems while maintaining full backward compatibility with 5.5V applications.

Q: Are both parts RoHS compliant?

A: Yes. Both the PI5PD2557ZCEX and TPS2557DRBR are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory standards for electronic component manufacturing.