RT9715FGF Equivalent & Substitute Parts

Part Overview

The RT9715FGF is a Power Switch/Driver IC manufactured by Richtek USA Inc., designed for 1:1 N-Channel high-side switching applications with 1.1A output capability in an 8-MSOP package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part operates across a 2.7V to 5.5V load voltage range with integrated current limiting, over-temperature protection, reverse current blocking, and UVLO fault protection suitable for USB switching applications.

Key Parameters

Parameter	RT9715FGF Value
Manufacturer	Richtek USA Inc.
Category	Power Management (PMIC)
Switch Type	USB Switch
Output Configuration	High Side, N-Channel, 1:1
Output Current (Max)	1.1A
Rds On (Typical)	90mOhm
Voltage - Load	2.7V ~ 5.5V
Fault Protection	Current Limiting (Fixed), Over Temperature, Reverse Current, UVLO
Features	Load Discharge, Status Flag
Operating Temperature	-40°C ~ 100°C (TJ)
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the RT9715FGF is determined by the following critical parameters:

Primary Substitution Criteria:

Output Configuration: High Side, N-Channel, 1:1 topology
Package Compatibility: 8-TSSOP or 8-MSOP form factor (0.118", 3.00mm Width)
Voltage Range: Load voltage 2.7V ~ 5.5V or compatible subset
Output Current: Minimum 1.1A capability
Fault Protection: Current Limiting (Fixed), Over Temperature, and UVLO required
Interface: On/Off control, Non-Inverting input

Secondary Compatibility Factors:

Rds On (Typical): 90mOhm reference; lower values acceptable
Features: Load Discharge and Status Flag preferred for functional equivalence
Reverse Current Protection: Required for USB switching applications
RoHS3 Compliance: Mandatory for regulatory alignment

Substitute parts are grouped into two categories: Direct Equivalents (matching all primary criteria with active product status) and Functional Alternatives (meeting core electrical requirements with potential operational differences).

Parameter Comparison

Part Number	Manufacturer	Output Current (Max)	Rds On (Typ)	Voltage - Load	Operating Temp	Package	Product Status	Load Discharge	Status Flag	Reverse Current
RT9715FGF	Richtek USA Inc.	1.1A	90mOhm	2.7V ~ 5.5V	-40°C ~ 100°C (TJ)	8-MSOP	Obsolete	Yes	Yes	Yes
BD82028FVJ-GE2	Rohm Semiconductor	1A	72mOhm	4.5V ~ 5.5V	-40°C ~ 85°C (TA)	8-TSSOP-BJ	Active	Yes	Yes	Yes
BD82029FVJ-GE2	Rohm Semiconductor	600mA	72mOhm	4.5V ~ 5.5V	-40°C ~ 85°C (TA)	8-TSSOP-BJ	Active	No	Yes	Yes
BD82030FVJ-GE2	Rohm Semiconductor	1.5A	72mOhm	4.5V ~ 5.5V	-40°C ~ 85°C (TA)	8-TSSOP-BJ	Active	Yes	Yes	Yes
BD82031FVJ-GE2	Rohm Semiconductor	1.5A	72mOhm	4.5V ~ 5.5V	-40°C ~ 85°C (TA)	8-TSSOP-BJ	Active	Yes	Yes	Yes
BD82034FVJ-GE2	Rohm Semiconductor	2.5A	72mOhm	4.5V ~ 5.5V	-40°C ~ 85°C (TA)	8-TSSOP-BJ	Active	Yes	Yes	Yes
BD82005FVJ-MGE2	Rohm Semiconductor	2A	70mOhm	2.7V ~ 5.5V	-40°C ~ 85°C (TA)	8-TSSOP-BJ	Active	No	No	No
BD82007FVJ-MGE2	Rohm Semiconductor	3A	70mOhm	2.7V ~ 5.5V	-40°C ~ 85°C (TA)	8-TSSOP-BJ	Active	No	No	No
MIC2544-2YMM	Microchip Technology	1.5A	80mOhm	2.7V ~ 5.5V	-40°C ~ 85°C (TA)	8-MSOP	Active	No	Yes	No
STMPS2141TTR	STMicroelectronics	500mA	110mOhm	2.7V ~ 5.5V	-40°C ~ 125°C (TJ)	8-MSOP	Active	No	No	Yes
STMPS2151TTR	STMicroelectronics	500mA	110mOhm	2.7V ~ 5.5V	-40°C ~ 125°C (TJ)	8-MSOP	Active	No	No	Yes

Engineering Selection Recommendations

Tier 1 - Direct Functional Equivalents (Preferred):

BD82030FVJ-GE2 and BD82031FVJ-GE2 from Rohm Semiconductor provide the closest functional match to RT9715FGF. Both parts maintain the required Load Discharge and Status Flag features, include Reverse Current protection, and support the full fault protection suite. Output current capability (1.5A) exceeds the RT9715FGF requirement (1.1A). The primary limitation is the reduced load voltage range (4.5V ~ 5.5V versus 2.7V ~ 5.5V), which restricts use to 5V-centric applications. Both parts carry Active product status and AEC-Q100 automotive qualification, ensuring long-term availability and supply chain stability.

BD82028FVJ-GE2 from Rohm Semiconductor offers an alternative with matching Load Discharge and Status Flag features and full fault protection. Output current (1A) is slightly below the RT9715FGF specification but remains within acceptable margins for 1.1A-rated designs operating at reduced load conditions. The 4.5V ~ 5.5V voltage range applies the same constraint as BD82030/BD82031.

Tier 2 - Functional Alternatives (Conditional Use):

MIC2544-2YMM from Microchip Technology supports the full 2.7V ~ 5.5V load voltage range and 8-MSOP package format, matching the original part's physical footprint. Output current (1.5A) and Rds On (80mOhm) are compatible. Status Flag output is present. However, this part lacks Load Discharge functionality and Reverse Current protection, requiring circuit-level evaluation for USB switching applications where these features provide critical protection.

BD82005FVJ-MGE2 and BD82007FVJ-MGE2 from Rohm Semiconductor support the full 2.7V ~ 5.5V voltage range with higher current ratings (2A and 3A respectively). Both parts lack Load Discharge, Status Flag, and Reverse Current protection features, limiting their suitability for direct substitution in designs dependent on these protections.

Tier 3 - Limited Compatibility (Lower Current Applications Only):

STMPS2141TTR and STMPS2151TTR from STMicroelectronics support the full 2.7V ~ 5.5V voltage range and include Reverse Current protection. Output current is limited to 500mA, making these parts suitable only for applications with significantly reduced current requirements below the 1.1A specification. Both parts lack Load Discharge and Status Flag features.

Compliance and Availability:

All substitute parts maintain ROHS3 compliance and RoHS3 certification. BD82030FVJ-GE2, BD82031FVJ-GE2, and BD82034FVJ-GE2 carry AEC-Q100 automotive qualification, supporting applications requiring automotive-grade component certification. Inventory availability is confirmed for all listed substitutes, with BD82028FVJ-GE2 showing the highest stock level (230,200 units).

Frequently Asked Questions (FAQ)

Q: Can BD82028FVJ-GE2 directly replace RT9715FGF in all applications?

A: BD82028FVJ-GE2 provides functional equivalence for applications operating within the 4.5V ~ 5.5V load voltage range. The 1A output current specification is slightly below the RT9715FGF rating of 1.1A. Both parts include Load Discharge, Status Flag, and Reverse Current protection. If your design operates at 2.7V to 4.4V load voltages, this part is not suitable. Verify your actual load voltage requirements before selection.

Q: What is the key difference between BD82030FVJ-GE2 and BD82034FVJ-GE2?

A: Both parts are functionally equivalent with identical Rds On (72mOhm), voltage range (4.5V ~ 5.5V), and protection features. The primary difference is output current rating: BD82030FVJ-GE2 is rated for 1.5A, while BD82034FVJ-GE2 is rated for 2.5A. Select BD82030FVJ-GE2 for designs matching the RT9715FGF current envelope; select BD82034FVJ-GE2 for applications requiring higher current capacity.

Q: Why does MIC2544-2YMM lack Load Discharge and Reverse Current protection?

A: MIC2544-2YMM is designed for general-purpose high-side switching with Status Flag output. Load Discharge and Reverse Current protection are application-specific features implemented in USB-optimized parts like the RT9715FGF and Rohm BD82xxx series. If your circuit design depends on these protections for fault tolerance, external circuit elements may be required when using MIC2544-2YMM.

Q: Can I use STMPS2141TTR or STMPS2151TTR as substitutes?

A: These parts are suitable only for applications with output current requirements below 500mA. The RT9715FGF is rated for 1.1A, making STMPS2141TTR and STMPS2151TTR unsuitable for direct replacement in full-current designs. Both parts support the full 2.7V ~ 5.5V voltage range and include Reverse Current protection, making them viable for reduced-current variants of your application.

Q: What is the impact of the reduced operating temperature range in Rohm BD82xxx parts?

A: Rohm BD82xxx substitutes operate to -40°C ~ 85°C (TA), compared to RT9715FGF at -40°C ~ 100°C (TJ). This 15°C reduction in maximum operating temperature may impact applications in high-ambient or high-power-dissipation environments. Verify your thermal design margins before selection. For applications requiring operation above 85°C ambient, MIC2544-2YMM or STMPS2141/STMPS2151 maintain compatibility to 85°C (TA).

Q: Are all substitute parts available in Tape & Reel packaging?

A: Rohm BD82xxx and STMicroelectronics STMPS2141/STMPS2151 parts are supplied in Tape & Reel (TR) packaging. MIC2544-2YMM is supplied in Tube packaging. Verify packaging requirements for your production process before finalizing supplier selection.

Q: Does the 8-TSSOP-BJ package used by Rohm parts fit the 8-MSOP footprint?

A: 8-TSSOP-BJ and 8-MSOP are both 0.118" (3.00mm) width packages with identical pin pitch and spacing. PCB footprints are compatible. However, verify your PCB layout tool recognizes both package designations as equivalent before proceeding with layout. Physical sample validation is recommended for first-article builds.

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