RT9047GG5 Equivalent & Substitute Parts

Part Overview

The RT9047GG5 is a linear voltage regulator IC with positive adjustable output, rated for 1A maximum output current in a SOT-223-5 surface mount package. This device is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The RT9047GG5 provides adjustable output voltage regulation from 1.2V to 5.2V with integrated over-current and over-temperature protection features.

Substiute Parts

RT9047GG5

Richtek USA Inc.In Stock: 10235RT9047GG5 Datasheet

Current PartRFQ

TPS73701DCQR

Texas InstrumentsIn Stock: 25273TPS73701DCQR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RT9047GG5 is based on the following critical parameters that must be maintained or exceeded:

• Output configuration (positive adjustable)
• Maximum output current (1A minimum)
• Input voltage rating (5.5V maximum)
• Output voltage range (1.2V to 5.2V minimum)
• Package compatibility (SOT-223 form factor)
• Surface mount mounting type
• Protection features (over-current and over-temperature)
• Operating temperature range (-40°C to 85°C minimum)

The TPS73701DCQR from Texas Instruments meets these substitution criteria with equivalent or superior electrical characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

The TPS73701DCQR is a direct functional substitute for the RT9047GG5. Both devices are ROHS3 compliant and REACH unaffected, meeting regulatory requirements for equivalent applications.

The TPS73701DCQR offers the following advantages: active product status ensuring long-term availability, lower quiescent current (400 µA vs. 600 µA), improved PSRR performance, extended operating temperature range (-40°C to 125°C vs. -40°C to 85°C), and additional reverse polarity protection. The TPS73701DCQR maintains identical package form factor (SOT-223-6) and output current rating (1A).

The primary design consideration is the increased dropout voltage specification of the TPS73701DCQR (0.5V @ 1A vs. 0.2V @ 1A). Applications requiring the lower dropout voltage of the original RT9047GG5 must evaluate this parameter against system power supply headroom.

Frequently Asked Questions (FAQ)

Q: Can the TPS73701DCQR directly replace the RT9047GG5 in existing designs?

A: Yes, the TPS73701DCQR is pin-compatible and functionally equivalent in SOT-223-6 package. Both devices share identical output current rating (1A), input voltage maximum (5.5V), and adjustable output voltage range (1.2V minimum). Verify that the increased dropout voltage specification (0.5V vs. 0.2V) does not impact your power supply margin.

Q: What is the package compatibility between these parts?

A: Both the RT9047GG5 and TPS73701DCQR use the SOT-223-6 surface mount package. Pin configuration and footprint are identical, allowing direct PCB substitution without layout modifications.

Q: Why is the RT9047GG5 marked as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The TPS73701DCQR from Texas Instruments provides equivalent functionality with active production status, ensuring availability for new designs and ongoing production requirements.

Q: Are there compliance differences between these parts?

A: Both parts are ROHS3 compliant and REACH unaffected. The TPS73701DCQR has improved moisture sensitivity rating (MSL 2 vs. MSL 3), providing better shelf-life stability under standard storage conditions.

Q: What is the key electrical difference between these regulators?

A: The primary electrical difference is dropout voltage: the RT9047GG5 specifies 0.2V maximum dropout at 1A, while the TPS73701DCQR specifies 0.5V maximum dropout at 1A. The TPS73701DCQR offers lower quiescent current consumption (400 µA vs. 600 µA) and extended temperature range operation (-40°C to 125°C vs. -40°C to 85°C).