PI5PD2051BTAEX Equivalent & Substitute Parts

Part Overview

The PI5PD2051BTAEX is a Power Switch/Driver IC manufactured by Diodes Incorporated, designed for USB switching applications with 1:1 N-Channel output configuration. This component operates as a high-side switch with a maximum output current of 500mA and integrated fault protection including current limiting, over-temperature protection, reverse current blocking, and UVLO (Under-Voltage Lock-Out). The device is currently classified as obsolete, making equivalent substitute parts necessary for ongoing design support and production continuity.

Substiute Parts

PI5PD2051BTAEX

Diodes IncorporatedIn Stock: 50308PI5PD2051BTAEX Datasheet

Current PartRFQ

RT9711CGJ5

Richtek USA Inc.In Stock: 4272RT9711CGJ5 Datasheet

MFR RecommendedRFQ

TPS3836L30QDBVRQ1

Texas InstrumentsIn Stock: 4034TPS3836L30QDBVRQ1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PI5PD2051BTAEX are selected based on the following critical parameters that define functional equivalence:

Primary Substitution Criteria:

• Switch Type: USB Switch
• Output Configuration: High Side, N-Channel, 1:1 Ratio
• Interface: On/Off control
• Voltage Range: Load voltage compatibility with 2.7V ~ 5.5V minimum
• Current Capacity: Output current rating ≥ 500mA
• Fault Protection: Current Limiting, Over Temperature, Reverse Current, UVLO
• Package Compatibility: SOT-23-5 or equivalent surface mount package
• Operating Temperature: -40°C ~ 125°C range
• Compliance: ROHS3 Compliant

The substitute parts identified maintain these core electrical and mechanical specifications while offering active product status and improved availability.

Parameter Comparison

Engineering Selection Recommendations

RT9711CGJ5 (Primary Substitute): The RT9711CGJ5 from Richtek USA Inc. provides the closest functional equivalence to the PI5PD2051BTAEX. Both devices operate as USB switches with high-side N-Channel output configuration, identical fault protection mechanisms, and matching operating temperature ranges. The RT9711CGJ5 offers superior current capacity (600mA vs. 500mA) and maintains ROHS3 compliance. The device is in active production status with confirmed inventory availability. The slightly higher Rds On (80mOhm vs. 70mOhm) and lower voltage floor (2.5V vs. 2.7V) represent acceptable trade-offs for a functionally equivalent replacement. MSL rating of 3 requires standard moisture control during storage and assembly.

TPS3836L30QDBVRQ1 (Secondary Reference): The TPS3836L30QDBVRQ1 from Texas Instruments is listed as a substitute in the original part documentation but operates in a different functional category as a supervisor/reset IC rather than a power switch. This device is not recommended as a direct functional replacement due to fundamentally different application purpose, output configuration (Push-Pull vs. High Side N-Channel), and lack of specified current output ratings. This part is suitable only for applications where supervisor functionality is required.

Frequently Asked Questions (FAQ)

Q: Can the RT9711CGJ5 directly replace the PI5PD2051BTAEX in existing designs? A: Yes, the RT9711CGJ5 is functionally equivalent for USB switch applications. Both devices share identical output configuration (high-side N-Channel), fault protection features, and operating temperature range. The higher current rating (600mA) and lower voltage floor (2.5V) of the RT9711CGJ5 provide enhanced capability. PCB layout and control signal routing remain compatible.

Q: What is the significance of the MSL rating difference between these parts? A: The PI5PD2051BTAEX has MSL 1 (unlimited shelf life), while the RT9711CGJ5 has MSL 3 (168-hour limit after moisture exposure). MSL 3 requires standard moisture control during storage and assembly operations. For most manufacturing environments with proper moisture management, this presents no practical limitation.

Q: Are package dimensions identical between PI5PD2051BTAEX and RT9711CGJ5? A: Both devices use SOT-23-5 package variants (SC-74/SOT-457 for PI5PD2051BTAEX and TSOT-23-5 for RT9711CGJ5). These are mechanically compatible for PCB placement, though minor dimensional variations may exist. Verify footprint compatibility with your specific PCB design tools.

Q: Why is the TPS3836L30QDBVRQ1 listed as a substitute if it is functionally different? A: The TPS3836L30QDBVRQ1 is referenced in the original part documentation but serves a different application purpose as a supervisor IC. It is not suitable as a direct replacement for power switching applications and should only be considered for designs requiring reset/power-on reset functionality.

Q: What compliance certifications apply to substitute parts? A: Both RT9711CGJ5 and TPS3836L30QDBVRQ1 are ROHS3 compliant and REACH unaffected, matching the compliance profile of the original PI5PD2051BTAEX. The TPS3836L30QDBVRQ1 carries additional AEC-Q100 automotive qualification.