RT9179AGS Linear Voltage Regulator - Equivalent & Substitute Parts

Part Overview

The RT9179AGS is an active linear voltage regulator IC manufactured by Richtek USA Inc., classified as a Power Management (PMIC) component. This positive adjustable regulator delivers 500mA output current in an 8-SOP surface mount package. The device is in active product status with 5694 units in current inventory stock.

Alternative equivalent parts may be required due to supply chain constraints, regional availability, or specific application requirements where substitute devices meet the defined electrical and mechanical specifications.

Substiute Parts

RT9179AGS

Richtek USA Inc.In Stock: 5772RT9179AGS Datasheet

Current PartRFQ

BD00IA5WEFJ-E2

Rohm SemiconductorIn Stock: 23525BD00IA5WEFJ-E2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RT9179AGS are qualified based on the following critical parameters that determine functional equivalence:

• Output configuration (Positive)
• Output type (Adjustable)
• Output current rating (500mA)
• Maximum input voltage (5.5V)
• Output voltage range (1.175V to 4.5V minimum and maximum)
• Package type (8-SOIC with 0.154" width, 3.90mm)
• Surface mount capability
• Control features (Enable function)
• Protection features (Over Current, Over Temperature)
• RoHS3 compliance

The BD00IA5WEFJ-E2 from Rohm Semiconductor meets these core substitution criteria. Both devices share identical output current capacity, input voltage maximum, output voltage range, package dimensions, and regulatory compliance status.

Parameter Comparison

Engineering Selection Recommendations

Both the RT9179AGS and BD00IA5WEFJ-E2 are active products with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement.

The RT9179AGS operates across a wider temperature range (-40°C to 125°C) compared to the BD00IA5WEFJ-E2 (-25°C to 85°C). Applications requiring operation below -25°C or above 85°C must use the RT9179AGS.

The RT9179AGS features a lower maximum dropout voltage (0.4V) versus the BD00IA5WEFJ-E2 (0.6V), providing superior efficiency in low-headroom power supply designs.

The BD00IA5WEFJ-E2 includes an exposed pad variant of the 8-SOIC package and incorporates soft start protection in addition to over current and over temperature functions.

Selection between these devices depends on specific application requirements regarding operating temperature range, dropout voltage performance, and thermal management needs.

Frequently Asked Questions (FAQ)

Q: Can the BD00IA5WEFJ-E2 directly replace the RT9179AGS in all applications?

A: Direct substitution is possible when the application operates within the BD00IA5WEFJ-E2 temperature range (-25°C to 85°C) and can tolerate the higher dropout voltage (0.6V versus 0.4V). Applications requiring extended temperature operation below -25°C or above 85°C require the RT9179AGS.

Q: Are the package dimensions identical between these two parts?

A: Both devices use 8-SOIC packages with 0.154" width and 3.90mm dimensions. The BD00IA5WEFJ-E2 includes an exposed pad variant. PCB layout compatibility is maintained for standard 8-SOIC footprints.

Q: What is the minimum output voltage difference between these regulators?

A: The RT9179AGS minimum output voltage is 1.175V, while the BD00IA5WEFJ-E2 minimum is 0.8V. Applications requiring output voltages below 1.175V must use the BD00IA5WEFJ-E2.

Q: Do both parts support the same control and protection features?

A: Both devices include Enable control and Over Current/Over Temperature protection. The BD00IA5WEFJ-E2 adds Soft Start protection. Both are suitable for applications requiring standard enable/disable functionality and thermal/current limiting.

Q: What are the compliance and regulatory differences?

A: Both parts are ROHS3 compliant, REACH unaffected, and classified under HTSUS 8542.39.0001. No regulatory barriers exist to substitution from a compliance perspective.