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RT9711CGF Equivalent & Substitute Parts
Part Overview
The RT9711CGF is an active N-Channel power switch/driver manufactured by Richtek USA Inc., designed for USB switching applications. This 1:1 ratio device operates in high-side configuration with 600mA maximum output current and 90mOhm typical on-resistance. The part is currently in active production status with 1017 pieces in stock inventory.
Equivalent and substitute parts are identified when design requirements allow for variations in output current capacity, operating temperature range, on-resistance characteristics, or packaging format while maintaining core functional compatibility in USB switching applications.
Substiute Parts
Key Parameters
| Parameter | RT9711CGF |
|---|---|
| Manufacturer | Richtek USA Inc. |
| Switch Type | USB Switch |
| Output Configuration | High Side, N-Channel, 1:1 Ratio |
| Current - Output (Max) | 600mA |
| Voltage - Load | 2.5V ~ 5.5V |
| Rds On (Typ) | 90mOhm |
| 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) |
| RoHS Status | ROHS3 Compliant |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitution eligibility is determined by the following criteria:
Core Functional Requirements:
- Switch Type: USB Switch or General Purpose
- Output Configuration: High Side, N-Channel, 1:1 Ratio
- Interface: On/Off control
- Fault Protection: Current Limiting (Fixed), Over Temperature, Reverse Current, UVLO
Allowable Parameter Variations:
- Current - Output (Max): Equal to or greater than 600mA
- Voltage - Load: Must encompass or match 2.5V ~ 5.5V range
- Rds On (Typ): Lower or equal values acceptable
- Operating Temperature: -40°C minimum and 85°C or higher maximum acceptable
- Package / Case: 8-TSSOP, 8-MSOP, or 8-VSSOP formats compatible
- Mounting Type: Surface Mount required
Compliance Requirements:
- RoHS3 Compliant
- Active product status
Parameter Comparison
| Part Number | Manufacturer | Current (Max) | Voltage - Load | Rds On (Typ) | Operating Temp | Package | Inventory |
|---|---|---|---|---|---|---|---|
| RT9711CGF | Richtek USA Inc. | 600mA | 2.5V ~ 5.5V | 90mOhm | -40°C ~ 125°C (TJ) | 8-MSOP | 1017 Pcs |
| BD82028FVJ-GE2 | Rohm Semiconductor | 1A | 4.5V ~ 5.5V | 72mOhm | -40°C ~ 85°C (TA) | 8-TSSOP-BJ | 230200 Pcs |
| BD82030FVJ-GE2 | Rohm Semiconductor | 1.5A | 4.5V ~ 5.5V | 72mOhm | -40°C ~ 85°C (TA) | 8-TSSOP-BJ | 60200 Pcs |
| BD82031FVJ-GE2 | Rohm Semiconductor | 1.5A | 4.5V ~ 5.5V | 72mOhm | -40°C ~ 85°C (TA) | 8-TSSOP-BJ | 2800 Pcs |
| BD82032FVJ-GE2 | Rohm Semiconductor | 2A | 4.5V ~ 5.5V | 72mOhm | -40°C ~ 85°C (TA) | 8-TSSOP-BJ | 23007 Pcs |
| BD82034FVJ-GE2 | Rohm Semiconductor | 2.5A | 4.5V ~ 5.5V | 72mOhm | -40°C ~ 85°C (TA) | 8-TSSOP-BJ | 18130 Pcs |
| STMPS2151TTR | STMicroelectronics | 500mA | 2.7V ~ 5.5V | 110mOhm | -40°C ~ 125°C (TJ) | 8-MSOP | 1660 Pcs |
| STMPS2171TTR | STMicroelectronics | 1A | 2.7V ~ 5.5V | 110mOhm | -40°C ~ 125°C (TJ) | 8-MSOP | 5656 Pcs |
| TPS2000CDGK | Texas Instruments | 2A | 4.5V ~ 5.5V | 72mOhm | -40°C ~ 85°C (TA) | 8-VSSOP | 1836 Pcs |
| TPS2000CDGN | Texas Instruments | 2A | 4.5V ~ 5.5V | 72mOhm | -40°C ~ 85°C (TA) | 8-HVSSOP | 1058 Pcs |
| TPS2001CDGK | Texas Instruments | 2A | 4.5V ~ 5.5V | 72mOhm | -40°C ~ 85°C (TA) | 8-VSSOP | 3660 Pcs |
Engineering Selection Recommendations
Direct Substitutes (Highest Compatibility): STMPS2151TTR and STMPS2171TTR maintain the widest voltage range (2.7V ~ 5.5V) and extended operating temperature (-40°C ~ 125°C), matching the RT9711CGF thermal specification. Both are RoHS3 compliant and active products. STMPS2151TTR provides equivalent 500mA current capacity; STMPS2171TTR offers 1A capacity for higher-load applications.
Higher Current Capacity Substitutes: BD82028FVJ-GE2, BD82030FVJ-GE2, BD82032FVJ-GE2, and BD82034FVJ-GE2 from Rohm Semiconductor provide 1A to 2.5A output current with superior on-resistance (72mOhm vs. 90mOhm). These parts operate within 4.5V ~ 5.5V load voltage range and -40°C ~ 85°C temperature range. All are RoHS3 compliant and active products with substantial inventory availability.
Texas Instruments Alternatives: TPS2000CDGK, TPS2000CDGN, and TPS2001CDGK deliver 2A output current with 72mOhm on-resistance. Operating range is 4.5V ~ 5.5V and -40°C ~ 85°C. All are RoHS3 compliant and active products. Package variants (8-VSSOP, 8-HVSSOP) differ from the original 8-MSOP format.
Selection Constraints: Applications requiring 2.5V minimum load voltage operation should prioritize STMPS series or RT9711CGF. Applications limited to 4.5V minimum may select from Rohm or Texas Instruments alternatives. Thermal designs operating above 85°C junction temperature require STMPS series or RT9711CGF.
Frequently Asked Questions (FAQ)
Q: Can I substitute RT9711CGF with a higher current-rated part like BD82034FVJ-GE2? A: Yes. BD82034FVJ-GE2 provides 2.5A output current versus 600mA on the RT9711CGF. Higher current capacity does not compromise functionality in lower-current applications. However, verify that your circuit board layout and thermal management accommodate the different package format (8-TSSOP-BJ vs. 8-MSOP).
Q: What is the voltage compatibility difference between RT9711CGF and Rohm BD82028FVJ-GE2? A: RT9711CGF operates at 2.5V ~ 5.5V load voltage; BD82028FVJ-GE2 operates at 4.5V ~ 5.5V. If your application requires operation below 4.5V, RT9711CGF or STMPS series are required.
Q: Are STMPS2151TTR and STMPS2171TTR pin-compatible with RT9711CGF? A: Both STMPS parts use 8-MSOP packaging matching RT9711CGF. Verify pinout compatibility in device datasheets before PCB layout changes, as pin assignments may differ between manufacturers.
Q: Why do Rohm and Texas Instruments parts specify -40°C ~ 85°C while RT9711CGF specifies -40°C ~ 125°C? A: Temperature specifications reflect junction temperature (TJ) versus ambient temperature (TA) measurement methods. RT9711CGF uses TJ specification; most substitutes use TA specification. For applications operating above 85°C ambient, STMPS series or RT9711CGF are appropriate selections.
Q: What is the on-resistance difference impact between 90mOhm (RT9711CGF) and 72mOhm (Rohm/TI parts)? A: Lower on-resistance reduces power dissipation and heat generation. At 600mA load current, the 18mOhm difference produces approximately 6.48mW less dissipation in substitute parts. This is beneficial for thermal management but not required for functional compatibility.
Q: Can I use TPS2000CDGN in place of RT9711CGF if my PCB layout accommodates 8-HVSSOP packaging? A: Yes, if your application operates within 4.5V ~ 5.5V load voltage and -40°C ~ 85°C temperature range. TPS2000CDGN provides 2A output current and 72mOhm on-resistance. Verify pinout compatibility and thermal pad requirements for the 8-HVSSOP package variant.
Q: Are all listed substitutes RoHS3 compliant? A: Yes. All parts listed meet RoHS3 compliance requirements and maintain active product status with current manufacturing availability.
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