RT9183-15GGF Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The RT9183-15GGF is a linear voltage regulator IC manufactured by Richtek USA Inc., designed to deliver a fixed 1.5V output at 1.5A maximum current. This Surface Mount device in SOT-223F packaging is classified as Active product status and is ROHS3 compliant. Substitute parts are necessary when the primary part becomes unavailable, when design flexibility is required across manufacturing locations, or when alternative performance characteristics better suit specific application requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

RT9183-15GGF

Richtek USA Inc.In Stock: 622RT9183-15GGF Datasheet

Current PartRFQ

LT1963EST-1.5#PBF

Analog Devices Inc.In Stock: 4594LT1963EST-1.5#PBF Datasheet

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TLV117115DCYR

Texas InstrumentsIn Stock: 3599TLV117115DCYR Datasheet

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TLV117115DCYT

Texas InstrumentsIn Stock: 1898TLV117115DCYT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RT9183-15GGF is determined by the following critical parameters:

• Fixed output voltage of 1.5V
• Output current capability of 1.5A or greater
• Maximum input voltage of 5.5V or greater
• Surface Mount packaging in TO-261-4 or TO-261AA case
• Operating temperature range of -40°C to 125°C or wider
• ROHS3 compliance and EAR99 ECCN classification

The substitute parts identified meet these core electrical and mechanical requirements. Variations in quiescent current, dropout voltage, and additional protection features represent acceptable trade-offs that do not compromise primary functionality in applications designed for the RT9183-15GGF.

Parameter Comparison

Engineering Selection Recommendations

LT1963EST-1.5#PBF (Analog Devices Inc.) is the primary substitute for applications requiring maximum compatibility with the RT9183-15GGF. This part maintains identical output voltage and current specifications, operates within the same temperature range, and carries Active product status with ROHS3 compliance. The higher maximum input voltage rating (20V) provides additional design flexibility. Reverse polarity protection is an added feature not present in the primary part.

TLV117115DCYR and TLV117115DCYT (Texas Instruments) are suitable substitutes for applications where output current requirements do not exceed 1.0A. Both parts are electrically and mechanically compatible with the RT9183-15GGF in terms of voltage specifications, temperature range, and packaging. These parts carry Last Time Buy status, indicating limited future availability. Enhanced protection features including reverse polarity protection and Under Voltage Lockout (UVLO) are included. Lower quiescent current (100 µA versus 500 µA) may provide power efficiency advantages in battery-powered applications.

Selection between TLV117115DCYR and TLV117115DCYT should be based on packaging preference (Cut Tape versus alternative formats) and inventory availability, as electrical specifications are identical.

Frequently Asked Questions (FAQ)

Q: Can the LT1963EST-1.5#PBF directly replace the RT9183-15GGF in all applications?

A: Yes, the LT1963EST-1.5#PBF meets all critical electrical and mechanical parameters for direct substitution. Both parts deliver 1.5V at 1.5A maximum output current, operate across -40°C to 125°C, and use compatible SOT-223 packaging. The LT1963EST-1.5#PBF includes additional reverse polarity protection not present in the RT9183-15GGF.

Q: Why are the Texas Instruments TLV117115 parts listed as substitutes if they only deliver 1.0A instead of 1.5A?

A: The TLV117115 series is listed as a substitute for applications where the actual load current does not exceed 1.0A. While the RT9183-15GGF is rated for 1.5A, many designs operate at lower current levels. The TLV117115 parts provide equivalent voltage regulation, identical temperature range support, and enhanced protection features. Applications requiring the full 1.5A output current must use the RT9183-15GGF or LT1963EST-1.5#PBF.

Q: What is the difference between TLV117115DCYR and TLV117115DCYT?

A: Both parts are electrically identical with the same output voltage, current rating, dropout voltage, quiescent current, and protection features. The difference lies in packaging format: TLV117115DCYR is supplied in Cut Tape (CT) format, while TLV117115DCYT uses an alternative packaging method. Selection should be based on manufacturing line compatibility and inventory availability.

Q: Are there any concerns with the Last Time Buy status of the Texas Instruments parts?

A: Last Time Buy status indicates that Texas Instruments will discontinue these parts after current inventory is exhausted. For new designs or long-term production requirements, the RT9183-15GGF (Active status) or LT1963EST-1.5#PBF (Active status) are recommended to ensure sustained component availability.

Q: How do the protection features differ between these parts?

A: The RT9183-15GGF provides Over Current and Over Temperature protection. The LT1963EST-1.5#PBF adds Reverse Polarity protection. The TLV117115 series includes Over Current, Over Temperature, Reverse Polarity, and Under Voltage Lockout (UVLO) protection. Applications requiring specific protection features should verify that the selected substitute includes the necessary safeguards.

Q: Is the higher quiescent current of the LT1963EST-1.5#PBF (1.5 mA) a concern compared to the RT9183-15GGF (500 µA)?

A: The difference in quiescent current is relevant only in applications where the regulator operates continuously with minimal load current, such as battery-powered standby circuits. In typical applications with active loads, the quiescent current difference is negligible compared to load current. Battery-powered designs should evaluate the impact based on expected standby duration and power budget requirements.