TPS6735IDRG4 Equivalent & Substitute Parts

Part Overview

The TPS6735IDRG4 is a buck switching regulator IC from Texas Instruments designed to generate a negative fixed -5V output at 200mA. This component is classified as a Power Management IC (PMIC) in the 8-SOIC surface mount package. The TPS6735IDRG4 is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

TPS6735IDRG4

Texas InstrumentsIn Stock: 2845TPS6735IDRG4 Datasheet

Current PartRFQ

TPS6735IDR

Texas InstrumentsIn Stock: 85644TPS6735IDR Datasheet

MFR RecommendedRFQ

MAX735CSA+

Analog Devices Inc./Maxim IntegratedIn Stock: 2413MAX735CSA+ Datasheet

MFR RecommendedRFQ

MAX735ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1916MAX735ESA+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TPS6735IDRG4 are qualified based on the following critical parameters that determine functional compatibility:

Electrical Parameters:

• Output voltage: -5V (fixed)
• Input voltage range: 4V to 6.2V
• Switching frequency: 160kHz
• Output configuration: Negative
• Package type: 8-SOIC (0.154", 3.90mm Width)
• RoHS3 compliance
• MSL rating: 1 (Unlimited)

Substitution Logic: The TPS6735IDR is a direct manufacturer-recommended substitute from Texas Instruments with identical electrical specifications and the same base product number (TPS6735). It differs only in packaging format (Cut Tape & Digi-Reel versus the original IDRG4 variant) and maintains active product status.

The MAX735CSA+ and MAX735ESA+ are qualified substitutes from Analog Devices Inc./Maxim Integrated. While they share the same input voltage range, output voltage, switching frequency, package type, and compliance certifications, they employ a buck-boost topology instead of buck topology and provide higher output current capability (275mA versus 200mA). These parts are suitable for applications where the additional current capacity and topology flexibility do not create design conflicts.

Parameter Comparison

Engineering Selection Recommendations

TPS6735IDR (Primary Substitute): The TPS6735IDR is the manufacturer-recommended direct substitute. It maintains identical electrical specifications, topology, and temperature range as the TPS6735IDRG4. This part is actively manufactured and stocked, with ROHS3 compliance and MSL 1 rating. Selection of this part eliminates any design re-qualification requirements.

MAX735CSA+ (Secondary Substitute): The MAX735CSA+ is qualified for substitution where the application can accommodate a buck-boost topology and higher output current (275mA). This part is actively manufactured with ROHS3 compliance and MSL 1 rating. The operating temperature range is limited to 0°C ~ 70°C, which may restrict use in extended temperature applications.

MAX735ESA+ (Secondary Substitute): The MAX735ESA+ provides the same electrical and compliance characteristics as the MAX735CSA+ but with an extended operating temperature range of -40°C ~ 85°C, matching the original TPS6735IDRG4. This part is suitable for applications requiring the full temperature range and higher output current capability.

Frequently Asked Questions (FAQ)

Q: Can the TPS6735IDR be used as a direct replacement for the TPS6735IDRG4? A: Yes. The TPS6735IDR is the manufacturer-recommended substitute with identical electrical specifications, output voltage, current rating, input voltage range, switching frequency, package type, and operating temperature range. The only difference is the packaging format (Cut Tape & Digi-Reel versus the original variant).

Q: What is the difference between the TPS6735IDR and the MAX735 series substitutes? A: The TPS6735IDR uses buck topology, while MAX735CSA+ and MAX735ESA+ use buck-boost topology. The MAX735 parts provide higher output current (275mA versus 200mA). All parts share the same -5V output voltage, input voltage range, switching frequency, and 8-SOIC package.

Q: Can I use MAX735CSA+ in applications requiring the full -40°C ~ 85°C temperature range? A: No. The MAX735CSA+ is rated for 0°C ~ 70°C operation only. For extended temperature applications, use MAX735ESA+, which supports -40°C ~ 85°C.

Q: Are all substitute parts RoHS3 compliant? A: Yes. The TPS6735IDR, MAX735CSA+, and MAX735ESA+ are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original TPS6735IDRG4.

Q: Do the substitute parts require PCB layout changes? A: No. All substitute parts use the same 8-SOIC (0.154", 3.90mm Width) surface mount package, allowing direct PCB footprint compatibility without layout modifications.

Q: What is the inventory status of these substitute parts? A: TPS6735IDR has 85,550 pcs in stock. MAX735CSA+ has 2,370 pcs in stock. MAX735ESA+ has 1,900 pcs in stock. All parts are actively manufactured and available.