RT9712DGF Equivalent & Substitute Parts

Part Overview

The RT9712DGF 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 ongoing design support and production continuity. The RT9712DGF provides general-purpose power switching with integrated current limiting, over-temperature protection, reverse current blocking, and UVLO fault protection.

Substiute Parts

RT9712DGF

Richtek USA Inc.In Stock: 1156RT9712DGF Datasheet

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AP2142AMPG-13

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AP2152AMPG-13

Diodes IncorporatedIn Stock: 3848AP2152AMPG-13 Datasheet

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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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TPS2060CDGNR

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TPS2062CDGN

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TPS2064CDGN-2

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TPS2064CDGNR-2

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TPS2066CDGN-2

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TPS2066CDGNR-2

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the RT9712DGF is determined by the following critical parameters:

• Output Type & Channel Configuration: N-Channel high-side switching capability
• Number of Outputs: 2 outputs required
• Load Voltage Range: 2.7V ~ 5.5V compatibility
• Output Current Capability: Minimum 1.1A to match or exceed original specification
• Rds On (On-Resistance): Electrical efficiency parameter; lower values acceptable
• Fault Protection Features: Current limiting, over-temperature, reverse current, and UVLO protection mandatory
• Package Compatibility: 8-MSOP or 8-HVSSOP surface mount packages with 0.118" (3.00mm) width
• Operating Temperature Range: -40°C to 85°C or higher acceptable
• Interface Type: Non-inverting on/off control
• Compliance: ROHS3 compliance required

Substitute parts are grouped into two categories based on channel type: N-Channel devices (direct functional equivalents) and P-Channel devices (alternative topology for specific applications). N-Channel substitutes maintain identical switching architecture. P-Channel substitutes require circuit topology adjustment but provide equivalent protection and control features within the same voltage and current specifications.

Parameter Comparison

Engineering Selection Recommendations

N-Channel Direct Substitutes (Preferred for Pin-Compatible Replacement)

The Texas Instruments TPS2060CDGNR, TPS2064CDGN-2, TPS2064CDGNR-2, and TPS2062CDGN are N-Channel high-side switches with identical output topology to the RT9712DGF. These devices maintain the same switching architecture and control interface. All TPS206x variants are active products with extended operating temperature ranges (-40°C to 125°C junction temperature), providing superior thermal performance compared to the obsolete RT9712DGF. The TPS2064 series offers 1.5A output current, exceeding the 1.1A specification of the original part. The TPS2062CDGN provides 1A output current, matching the lower end of typical application requirements. All N-Channel substitutes feature lower on-resistance (70mOhm vs. 90mOhm), improving power efficiency. Load voltage compatibility is limited to 4.5V ~ 5.5V for TPS206x devices, which is narrower than the RT9712DGF range of 2.7V ~ 5.5V. This restriction applies only to applications requiring operation below 4.5V.

P-Channel Alternative Topology (Circuit Redesign Required)

The Diodes Incorporated AP2142AMPG-13, AP2152AMPG-13, AP2162AMPG-13, AP2172AMPG-13, AP2182AMPG-13, and AP2192AMPG-13 are P-Channel high-side switches requiring circuit topology modification. These devices provide equivalent protection features and load voltage compatibility (2.7V ~ 5.5V) matching the original specification. Current ratings range from 500mA (AP2142, AP2152) to 1.5A (AP2182, AP2192), with the AP2162 and AP2172 providing 1A output. All P-Channel variants are active products with superior moisture sensitivity (MSL 1 vs. MSL 3), indicating better long-term reliability in humid storage conditions. P-Channel substitution requires inverting the gate drive signal and modifying the circuit layout, making this approach suitable only for new designs or significant board revisions.

Selection Criteria by Application

For direct replacement in existing designs, select TPS2064CDGN-2 or TPS2064CDGNR-2 if load voltage remains above 4.5V. For applications requiring extended load voltage range (2.7V ~ 5.5V), P-Channel alternatives from the Diodes AP21xx series are necessary, with circuit topology modification. Current rating selection depends on application load requirements: TPS2062CDGN for 1A maximum, TPS2060CDGNR or TPS2064 variants for 1.5A maximum, AP2162/AP2172 for 1A P-Channel, or AP2182/AP2192 for 1.5A P-Channel.

Frequently Asked Questions (FAQ)

Q: Can I directly replace RT9712DGF with TPS2064CDGN-2 without circuit modification?

A: Yes, if your application operates within the 4.5V ~ 5.5V load voltage range. The TPS2064CDGN-2 maintains identical N-Channel high-side switching topology, on/off control interface, and 8-MSOP package pinout compatibility. No circuit redesign is required. However, verify that your load voltage specification does not require operation below 4.5V, as the TPS206x series does not support the full 2.7V ~ 5.5V range of the original RT9712DGF.

Q: What is the difference between 1:1 and 1:2 input-to-output ratio?

A: The RT9712DGF uses a 1:1 ratio, meaning one input control signal manages one output switch. The TPS206x and AP21xx substitutes use a 1:2 ratio, where one input control signal manages two independent output switches. This difference does not affect single-output applications; the second output simply remains unused. For applications requiring independent control of two separate loads, the 1:2 ratio provides integrated dual-switch functionality.

Q: Why do some substitutes have lower on-resistance (70mOhm vs. 90mOhm)?

A: Lower on-resistance reduces power dissipation and heat generation during switching operation. The TPS206x series achieves 70mOhm on-resistance compared to the RT9712DGF specification of 90mOhm. This improvement is beneficial for power efficiency and thermal management. The AP21xx P-Channel alternatives maintain 85mOhm on-resistance, which is intermediate between the two N-Channel options.

Q: Can I use P-Channel substitutes (AP21xx series) as direct replacements?

A: No. P-Channel devices require circuit topology modification because the gate drive signal polarity is inverted relative to N-Channel devices. Direct substitution without circuit redesign will result in inverted switching behavior. P-Channel alternatives are suitable only for new designs or significant board revisions where circuit topology can be adjusted accordingly.

Q: What is the significance of MSL (Moisture Sensitivity Level) differences?

A: The RT9712DGF specifies MSL 3 (168 hours), indicating moderate moisture sensitivity requiring controlled storage conditions. All substitute parts specify MSL 1 (unlimited) or MSL 2 (1 year), indicating superior moisture resistance and more relaxed storage requirements. This improvement reduces risk of moisture-induced failures during extended storage or in humid environments.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The RT9712DGF and all listed substitute parts are ROHS3 compliant, meeting environmental and hazardous substance restrictions. No compliance issues exist for substitution.

Q: What is the operating temperature difference between RT9712DGF and TPS206x substitutes?

A: The RT9712DGF operates from -40°C to 85°C (ambient temperature). The TPS206x series operates from -40°C to 125°C (junction temperature), providing extended thermal performance. This difference is advantageous for applications in elevated-temperature environments or with high power dissipation. The AP21xx P-Channel alternatives match the original -40°C to 85°C specification.

Q: Which substitute should I select if my application requires 2.7V load voltage operation?

A: The TPS206x N-Channel series does not support operation below 4.5V. For applications requiring 2.7V ~ 5.5V load voltage compatibility, select P-Channel alternatives from the Diodes AP21xx series (AP2142, AP2152, AP2162, AP2172, AP2182, or AP2192), which maintain the full voltage range. Circuit topology modification is required for P-Channel substitution.

Q: What is the inventory status of substitute parts?

A: All listed substitute parts are active products with current inventory availability. The TPS2064CDGN-2 has the highest inventory (50,228 units), followed by TPS2060CDGNR (5,726 units). The AP21xx P-Channel series has lower inventory levels (1,436 to 5,612 units). Inventory status should be confirmed with your component supplier for current availability.