RT9166-28GVL Equivalent & Substitute Parts

Part Overview

The RT9166-28GVL is a linear voltage regulator IC manufactured by Richtek USA Inc., designed to deliver a fixed 2.8V output at 300mA in a compact SOT-23-3L surface mount package. This active product is widely used in power management applications requiring low-dropout regulation with integrated over-current and over-temperature protection. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs.

Substiute Parts

RT9166-28GVL

Richtek USA Inc.In Stock: 1535RT9166-28GVL Datasheet

Current PartRFQ

AP130-28RG-7

Diodes IncorporatedIn Stock: 15162AP130-28RG-7 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RT9166-28GVL is determined by strict alignment of the following electrical and mechanical parameters:

• Fixed output voltage of 2.8V
• Output current capability of 300mA
• Maximum input voltage of 5.5V
• Surface mount package compatibility (SOT-23-3 / SC-59 / TO-236-3)
• Operating temperature range of -40°C to 85°C
• Active product status
• RoHS3 compliance

The AP130-28RG-7 manufactured by Diodes Incorporated meets all substitution criteria. Both devices share identical output voltage, current rating, input voltage specification, package form factor, temperature range, and regulatory compliance status. Functional equivalence is established through matching electrical specifications and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the RT9166-28GVL and AP130-28RG-7 are active products with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement. Selection between these devices is based on application-specific requirements:

The RT9166-28GVL offers lower typical dropout voltage (0.23V vs 0.5V) and higher quiescent current (300 µA vs 100 µA). The AP130-28RG-7 provides lower quiescent current consumption and includes short-circuit protection in addition to over-current and over-temperature protection. Both devices operate across the identical temperature range and deliver the specified 300mA at 2.8V output.

Package form factors are mechanically compatible (SOT-23-3 and SC-59R are equivalent footprints), enabling direct substitution in surface mount applications. Inventory availability and lead time considerations may influence component selection between these two qualified alternatives.

Frequently Asked Questions (FAQ)

Q: Can the AP130-28RG-7 directly replace the RT9166-28GVL in existing designs?

A: Yes. Both devices share identical output voltage (2.8V), output current (300mA), input voltage rating (5.5V max), operating temperature range (-40°C to 85°C), and surface mount package compatibility (SOT-23-3 / SC-59). Mechanical and electrical substitution is valid.

Q: What are the key differences between these two regulators?

A: The RT9166-28GVL features lower typical dropout voltage (0.23V vs 0.5V) and higher quiescent current (300 µA vs 100 µA). The AP130-28RG-7 includes short-circuit protection and lower quiescent current. PSRR specifications differ slightly (55dB at 1kHz vs 58dB at 100Hz).

Q: Are the package footprints identical?

A: Both devices use mechanically compatible surface mount packages. The RT9166-28GVL uses SOT-23-3 and the AP130-28RG-7 uses SC-59R, which share the same physical footprint and pin configuration for PCB layout purposes.

Q: Do both parts meet current compliance requirements?

A: Yes. Both the RT9166-28GVL and AP130-28RG-7 are ROHS3 compliant and REACH unaffected, meeting current regulatory standards for electronic component use.

Q: Which device should be selected for low-power applications?

A: The AP130-28RG-7 is preferable for applications prioritizing low quiescent current consumption, offering 100 µA compared to the RT9166-28GVL's 300 µA. This difference becomes significant in battery-powered or always-on standby scenarios.

Q: Which device should be selected for applications requiring minimal voltage drop?

A: The RT9166-28GVL is preferable for applications with tight input voltage margins, offering a typical dropout voltage of 0.23V at 300mA compared to the AP130-28RG-7's 0.5V specification.