RT9183-33GGF Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The RT9183-33GGF is a linear voltage regulator IC manufactured by Richtek USA Inc., designed to deliver a fixed 3.3V output at 1.5A in a surface-mount SOT-223F package. This device is classified as a Power Management (PMIC) component and maintains Active product status. The RT9183-33GGF is suitable for applications requiring stable 3.3V regulation from input sources up to 5.5V with integrated over-current and over-temperature protection.

Identifying equivalent and substitute parts becomes necessary when addressing supply chain constraints, inventory availability, or specific application requirements that may benefit from alternative regulatory characteristics or package configurations while maintaining functional compatibility.

Substiute Parts

RT9183-33GGF

Richtek USA Inc.In Stock: 12802RT9183-33GGF Datasheet

Current PartRFQ

ADP3339AKCZ-3.3-R7

Analog Devices Inc.In Stock: 14892ADP3339AKCZ-3.3-R7 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RT9183-33GGF is determined by the following critical parameters:

• Fixed output voltage of 3.3V
• Output current capability of 1.5A minimum
• Maximum input voltage rating of 5.5V or higher
• Surface-mount package compatibility (SOT-223 or equivalent footprint)
• Over-current and over-temperature protection features
• RoHS3 compliance

The ADP3339AKCZ-3.3-R7 manufactured by Analog Devices Inc. meets these substitution criteria. Both devices deliver identical fixed 3.3V output at 1.5A with compatible package footprints and protection features. Differences in quiescent current, dropout voltage, and operating temperature range are secondary parameters that do not prevent functional substitution in most applications.

Parameter Comparison

Engineering Selection Recommendations

The RT9183-33GGF is recommended for new designs due to its Active product status. The ADP3339AKCZ-3.3-R7 is classified as Not For New Designs, making it suitable only for legacy system maintenance, repair, or replacement scenarios where existing designs already incorporate this component.

Both devices are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The RT9183-33GGF offers a wider operating temperature range (-40°C ~ 125°C) compared to the ADP3339AKCZ-3.3-R7 (-40°C ~ 85°C), which may be a determining factor for applications requiring extended temperature performance.

The ADP3339AKCZ-3.3-R7 demonstrates superior quiescent current performance (200 µA versus 500 µA) and marginally lower dropout voltage (0.48V versus 0.5V), characteristics that may provide advantages in battery-powered or low-power standby applications despite its legacy status.

Frequently Asked Questions (FAQ)

Q: Can the ADP3339AKCZ-3.3-R7 directly replace the RT9183-33GGF in existing designs?

A: Yes, from a functional standpoint. Both devices deliver 3.3V at 1.5A with compatible SOT-223 package footprints. However, the ADP3339AKCZ-3.3-R7 carries a Not For New Designs status, limiting its use to replacement or repair applications.

Q: What are the package compatibility considerations?

A: The RT9183-33GGF uses SOT-223F packaging (TO-261-4, TO-261AA), while the ADP3339AKCZ-3.3-R7 uses SOT-223-3 packaging. Both are surface-mount packages with compatible pinouts for this voltage regulator class, allowing PCB footprint reuse.

Q: How do the quiescent current differences affect application performance?

A: The ADP3339AKCZ-3.3-R7 draws 200 µA quiescent current compared to the RT9183-33GGF's 500 µA. In applications with extended idle periods or battery operation, this 300 µA difference may reduce standby power consumption. For continuous-load applications, this difference is negligible.

Q: Are there temperature range limitations when substituting?

A: The RT9183-33GGF operates across -40°C ~ 125°C, while the ADP3339AKCZ-3.3-R7 is limited to -40°C ~ 85°C. Applications requiring operation above 85°C must use the RT9183-33GGF.

Q: Do both parts meet current regulatory compliance standards?

A: Yes. Both the RT9183-33GGF and ADP3339AKCZ-3.3-R7 are ROHS3 compliant and REACH unaffected, meeting current environmental and hazardous substance regulations.