RT9712CGF Equivalent & Substitute Parts

Part Overview

The RT9712CGF is a Power Switch/Driver IC manufactured by Richtek USA Inc., configured as a 1:1 N-Channel high-side switch with 1.1A output current capability in an 8-MSOP package. This device is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The RT9712CGF provides general-purpose power switching with integrated current limiting, over-temperature protection, reverse current blocking, and UVLO (Under-Voltage Lock-Out) fault protection.

Substiute Parts

RT9712CGF

Richtek USA Inc.In Stock: 973RT9712CGF Datasheet

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AP2142AMPG-13

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AP2152AMPG-13

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AP2162AMPG-13

Diodes IncorporatedIn Stock: 5633AP2162AMPG-13 Datasheet

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AP2172AMPG-13

Diodes IncorporatedIn Stock: 2639AP2172AMPG-13 Datasheet

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AP2182AMPG-13

Diodes IncorporatedIn Stock: 1537AP2182AMPG-13 Datasheet

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AP2192AMPG-13

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TPS2064CDGN-2

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TPS2064CDGNR-2

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TPS2066CDGN

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TPS2066CDGN-2

Texas InstrumentsIn Stock: 1436TPS2066CDGN-2 Datasheet

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TPS2066CDGNR-2

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the RT9712CGF is determined by the following critical parameters:

Primary Substitution Criteria:

• Output Type: N-Channel (required for direct functional replacement)
• Ratio - Input:Output: 1:1 or 1:2 (1:2 ratio acceptable with design consideration)
• Output Configuration: High Side
• Number of Outputs: 2
• Voltage - Load: 2.7V ~ 5.5V (minimum overlap requirement)
• Current - Output (Max): ≥1.1A (equal or greater capacity)
• Rds On (Typ): ≤90mOhm (equal or lower on-resistance)
• Package / Case: 8-MSOP compatible footprint
• Fault Protection: Current Limiting, Over Temperature, Reverse Current, UVLO
• Operating Temperature: -40°C minimum, 85°C minimum upper limit

Substitute Categories:

Category A - Direct N-Channel 1:1 Substitutes: No direct 1:1 N-Channel equivalents are available in the provided substitute list.

Category B - N-Channel 1:2 Substitutes (Functional Equivalents): Texas Instruments TPS2064 and TPS2066 series devices provide N-Channel switching with 1:2 input-to-output ratio, higher current ratings, improved on-resistance, and extended operating temperature range to 125°C.

Category C - P-Channel 1:2 Alternatives (Topology Change Required): Diodes Incorporated AP2142, AP2152, AP2162, AP2172, AP2182, and AP2192 series provide P-Channel switching with 1:2 ratio. These require circuit topology modification due to inverted channel type but maintain compatible voltage, current, and protection specifications.

Parameter Comparison

Engineering Selection Recommendations

For N-Channel High-Side Switch Applications (Preferred):

The Texas Instruments TPS2064 and TPS2066 series provide active product status with extended operating temperature range to 125°C junction temperature. TPS2064CDGN-2 and TPS2064CDGNR-2 deliver 1.5A output current with 70mOhm on-resistance, exceeding RT9712CGF performance. TPS2066CDGN and TPS2066CDGN-2 provide 1A output current with identical 70mOhm on-resistance. All TPS206x devices maintain ROHS3 compliance and complete fault protection architecture. The 1:2 input-to-output ratio requires circuit design consideration but does not prevent functional substitution in most applications.

Voltage Compatibility Note: TPS206x series operates at 4.5V ~ 5.5V load voltage, restricting use in applications requiring 2.7V ~ 4.6V operation. For designs requiring full 2.7V ~ 5.5V range, Diodes Incorporated P-Channel alternatives must be evaluated.

For P-Channel Topology Applications (Circuit Modification Required):

Diodes Incorporated AP2162AMPG-13 and AP2172AMPG-13 provide 1A output current with 85mOhm on-resistance and full 2.7V ~ 5.5V voltage compatibility. AP2182AMPG-13 and AP2192AMPG-13 deliver 1.5A output current with identical specifications. All AP21xx devices maintain active product status, ROHS3 compliance, and complete fault protection. P-Channel topology requires inverting the gate drive signal and load connection configuration compared to N-Channel RT9712CGF implementation.

Compliance and Availability:

All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching RT9712CGF regulatory requirements. Active product status ensures long-term availability and supply chain stability compared to the obsolete RT9712CGF.

Frequently Asked Questions (FAQ)

Q: Can TPS2064 and TPS2066 series directly replace RT9712CGF without circuit modification?

A: TPS206x series maintains N-Channel output type, high-side configuration, and identical fault protection, enabling direct PCB footprint replacement in 8-MSOP packages. The 1:2 input-to-output ratio differs from RT9712CGF 1:1 ratio but does not prevent functional substitution. Gate drive signal timing and load switching behavior remain compatible. Verify load voltage operation within 4.5V ~ 5.5V specification before implementation.

Q: Why do Diodes Incorporated AP21xx parts use P-Channel instead of N-Channel?

A: AP21xx series implements P-Channel topology for USB power switch applications, requiring gate drive inversion and load connection reconfiguration. P-Channel substitution is not a direct replacement but provides equivalent switching performance with full 2.7V ~ 5.5V voltage range support. Circuit topology modification is mandatory for AP21xx implementation.

Q: What is the impact of lower on-resistance in TPS206x substitutes?

A: TPS2064 and TPS2066 series feature 70mOhm on-resistance compared to RT9712CGF 90mOhm specification. Lower on-resistance reduces power dissipation and heat generation during switching operation, improving thermal performance and efficiency. This represents a performance improvement with no negative impact on circuit compatibility.

Q: Are all substitute parts compatible with the 8-MSOP package footprint?

A: All substitute parts use 8-MSOP or 8-HVSSOP packages with 0.118" (3.00mm) width, maintaining PCB footprint compatibility. TPS206x and AP21xx series include exposed pad variants for improved thermal management. Verify PCB layout accommodates exposed pad thermal connection if upgrading from standard 8-MSOP to exposed pad variants.

Q: What is the difference between TPS2064CDGN-2 and TPS2064CDGNR-2 packaging?

A: TPS2064CDGN-2 is supplied in Tube packaging, while TPS2064CDGNR-2 uses Cut Tape (CT) & Digi-Reel® packaging. Both variants contain identical die and electrical specifications. Packaging selection depends on production volume and automated assembly requirements. Electrical performance and reliability are equivalent between packaging options.

Q: Can RT9712CGF be used in new designs, or must substitutes be selected?

A: RT9712CGF is classified as obsolete, making it unsuitable for new production designs. Existing inventory may support legacy product maintenance, but new designs must select from active substitute parts. TPS2064, TPS2066, and AP21xx series provide long-term availability and supply chain stability for ongoing production.

Q: What is the operating temperature difference between RT9712CGF and TPS206x substitutes?

A: RT9712CGF operates at -40°C ~ 85°C ambient temperature (TA), while TPS206x series operates at -40°C ~ 125°C junction temperature (TJ). Extended junction temperature range in TPS206x provides improved thermal margin in high-ambient or high-power-dissipation applications. This represents a performance advantage with no compatibility impact.