RT9711BGF Equivalent & Substitute Parts

Part Overview

The RT9711BGF is an active N-Channel power switch/driver manufactured by Richtek USA Inc., designed for USB switching applications. This 1:1 ratio, high-side output device operates across a 2.5V to 5.5V load voltage range with a maximum output current of 1.5A and typical on-resistance of 90mOhm. The part is RoHS3 compliant, actively produced, and widely stocked with 1260 units in inventory. Substitute parts are identified when equivalent electrical performance, package compatibility, and fault protection features align with the RT9711BGF specifications, enabling direct replacement in applications where component availability or supply chain considerations necessitate alternatives.

Key Parameters

Parameter	RT9711BGF Value
Manufacturer	Richtek USA Inc.
Switch Type	USB Switch
Output Configuration	High Side
Output Type	N-Channel
Ratio - Input:Output	1:1
Number of Outputs	1
Voltage - Load	2.5V ~ 5.5V
Current - Output (Max)	1.5A
Rds On (Typ)	90mOhm
Input Type	Non-Inverting
Fault Protection	Current Limiting (Fixed), Over Temperature, Reverse Current, UVLO
Operating Temperature	-40°C ~ 125°C (TJ)
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the RT9711BGF is determined by the following critical parameters:

Primary Compatibility Criteria:

Output configuration (High Side)
Output type (N-Channel)
Ratio (1:1)
Number of outputs (1)
Mounting type (Surface Mount)
Package compatibility (8-TSSOP or 8-MSOP)

Electrical Performance Criteria:

Load voltage range must encompass or match the RT9711BGF range (2.5V ~ 5.5V)
Maximum output current must be equal to or greater than 1.5A
Rds On (typical) should be comparable or lower
Input type (Non-Inverting preferred for direct replacement)
Fault protection features (Current Limiting, Over Temperature, Reverse Current, UVLO)

Compliance & Status:

Product status must be Active
RoHS3 compliance required
Operating temperature range should support -40°C to 125°C or equivalent

Substitute parts are grouped into two categories: direct equivalents (matching all primary criteria with equivalent electrical performance) and functional alternatives (meeting primary criteria with acceptable electrical variations).

Parameter Comparison

Part Number	Manufacturer	Output Current (Max)	Rds On (Typ)	Load Voltage Range	Input Type	Package	Operating Temp	Inventory
RT9711BGF	Richtek USA Inc.	1.5A	90mOhm	2.5V ~ 5.5V	Non-Inverting	8-MSOP	-40°C ~ 125°C (TJ)	1260 Pcs
BD82028FVJ-GE2	Rohm Semiconductor	1A	72mOhm	4.5V ~ 5.5V	Non-Inverting	8-TSSOP-BJ	-40°C ~ 85°C (TA)	230200 Pcs
BD82029FVJ-GE2	Rohm Semiconductor	600mA	72mOhm	4.5V ~ 5.5V	Non-Inverting	8-TSSOP-BJ	-40°C ~ 85°C (TA)	1229 Pcs
BD82030FVJ-GE2	Rohm Semiconductor	1.5A	72mOhm	4.5V ~ 5.5V	Non-Inverting	8-TSSOP-BJ	-40°C ~ 85°C (TA)	60200 Pcs
BD82031FVJ-GE2	Rohm Semiconductor	1.5A	72mOhm	4.5V ~ 5.5V	Non-Inverting	8-TSSOP-BJ	-40°C ~ 85°C (TA)	2800 Pcs
BD82034FVJ-GE2	Rohm Semiconductor	2.5A	72mOhm	4.5V ~ 5.5V	Non-Inverting	8-TSSOP-BJ	-40°C ~ 85°C (TA)	18130 Pcs
MIC2548-1YMM	Microchip Technology	1.5A	80mOhm	2.7V ~ 5.5V	Non-Inverting	8-MSOP	-40°C ~ 85°C (TA)	5100 Pcs
STMPS2151TTR	STMicroelectronics	500mA	110mOhm	2.7V ~ 5.5V	Non-Inverting	8-MSOP	-40°C ~ 125°C (TJ)	1660 Pcs
STMPS2171TTR	STMicroelectronics	1A	110mOhm	2.7V ~ 5.5V	Non-Inverting	8-MSOP	-40°C ~ 125°C (TJ)	5656 Pcs
TPS2000CDGK	Texas Instruments	2A	72mOhm	4.5V ~ 5.5V	Inverting	8-VSSOP	-40°C ~ 85°C (TA)	1836 Pcs
TPS2000CDGN	Texas Instruments	2A	72mOhm	4.5V ~ 5.5V	Inverting	8-HVSSOP	-40°C ~ 85°C (TA)	1058 Pcs

Engineering Selection Recommendations

Direct Equivalents (Preferred Substitutes):

BD82030FVJ-GE2 and BD82031FVJ-GE2 provide the closest functional match to RT9711BGF. Both deliver 1.5A maximum output current with 72mOhm on-resistance, matching the primary electrical specification. Load voltage range is restricted to 4.5V ~ 5.5V, which is acceptable for USB switching applications. Both are RoHS3 compliant and actively produced. Operating temperature is limited to -40°C ~ 85°C (TA) versus RT9711BGF's -40°C ~ 125°C (TJ), a consideration for high-temperature environments. Package compatibility is confirmed (8-TSSOP-BJ). Inventory availability is substantial (60200 and 2800 units respectively).

BD82034FVJ-GE2 offers higher current capability (2.5A) with identical on-resistance and voltage range. This part is suitable when higher current headroom is required. RoHS3 compliance and active status confirmed. Inventory is robust at 18130 units.

MIC2548-1YMM maintains 1.5A output current and 80mOhm on-resistance with load voltage range of 2.7V ~ 5.5V, closely matching RT9711BGF's 2.5V specification. Package is 8-MSOP, identical to RT9711BGF. Operating temperature is -40°C ~ 85°C (TA). RoHS3 compliant and actively produced with 5100 units in stock.

Functional Alternatives (Current-Limited Applications):

STMPS2171TTR provides 1A output current with 110mOhm on-resistance in 8-MSOP package. Load voltage range of 2.7V ~ 5.5V and operating temperature of -40°C ~ 125°C (TJ) match RT9711BGF thermal specifications. Suitable for applications where 1A current is sufficient. RoHS3 compliant with 5656 units available.

STMPS2151TTR is limited to 500mA output current and is recommended only for low-current switching applications. Operating temperature range matches RT9711BGF. RoHS3 compliant with 1660 units in inventory.

Not Recommended for Direct Replacement:

BD82028FVJ-GE2 and BD82029FVJ-GE2 have reduced current ratings (1A and 600mA respectively) below the 1.5A specification of RT9711BGF.

TPS2000CDGK and TPS2000CDGN feature inverting input logic, requiring circuit redesign for compatibility with non-inverting control signals in RT9711BGF applications.

Frequently Asked Questions (FAQ)

Q: Can BD82030FVJ-GE2 directly replace RT9711BGF without circuit modifications?

A: BD82030FVJ-GE2 is a direct functional replacement for RT9711BGF in USB switching applications. Both are 1:1 ratio, high-side N-Channel switches with 1.5A output current and non-inverting input logic. Package compatibility is confirmed (8-TSSOP-BJ vs. 8-MSOP). The primary design consideration is the reduced operating temperature range (85°C TA vs. 125°C TJ), which is acceptable for standard USB applications operating below 85°C ambient temperature.

Q: What is the difference between 8-MSOP and 8-TSSOP packages?

A: Both 8-MSOP and 8-TSSOP are 8-pin surface-mount packages with 0.118" (3.00mm) width. The primary difference is pin pitch and thermal characteristics. 8-TSSOP-BJ packages used in Rohm parts may include a backside junction for improved thermal performance. PCB layout compatibility should be verified with device datasheets, though both packages are mechanically and electrically interchangeable for this application class.

Q: Is MIC2548-1YMM suitable for applications requiring the full 2.5V minimum load voltage of RT9711BGF?

A: MIC2548-1YMM specifies a minimum load voltage of 2.7V, which is 0.2V higher than RT9711BGF's 2.5V minimum. For applications operating at or below 2.7V, MIC2548-1YMM is not suitable. For applications operating above 2.7V, MIC2548-1YMM is fully compatible.

Q: Why do TPS2000 series parts have inverting input logic?

A: TPS2000CDGK and TPS2000CDGN feature inverting input control, meaning a low logic level enables the output switch. RT9711BGF uses non-inverting logic where a high logic level enables the output. Direct substitution requires inverting the control signal in the circuit, making these parts unsuitable for drop-in replacement without firmware or hardware modifications.

Q: Which substitute part offers the best thermal performance?

A: BD82034FVJ-GE2 provides the lowest on-resistance at 72mOhm with the highest current rating (2.5A), resulting in the lowest power dissipation for equivalent load currents. MIC2548-1YMM offers 80mOhm on-resistance, also suitable for thermal-constrained applications. Both are preferable to STMPS2171TTR (110mOhm) when thermal performance is critical.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed are RoHS3 compliant and actively produced, meeting current environmental and regulatory requirements equivalent to RT9711BGF.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message