RT9086-28GQZ Equivalent & Substitute Parts

Part Overview

The RT9086-28GQZ is a linear voltage regulator IC manufactured by Richtek USA Inc., classified as a Power Management (PMIC) component. This device provides a fixed positive output of 2.8V at 250mA with integrated over-current and over-temperature protection. The part is actively produced and RoHS3 compliant, designed for surface mount applications in 4-ZQFN (1x1) packaging.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter set. Alternative sources and variants may be required due to inventory availability, supply chain considerations, or specific application requirements within the allowed parameter ranges.

Substiute Parts

RT9086-28GQZ

Richtek USA Inc.In Stock: 2806RT9086-28GQZ Datasheet

Current PartRFQ

RT9073A-28GQZ

Richtek USA Inc.In Stock: 85336RT9073A-28GQZ Datasheet

Parametric EquivalentRFQ

AP7353-28FS4-7

Diodes IncorporatedIn Stock: 1047AP7353-28FS4-7 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RT9086-28GQZ is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Criteria:

• Output voltage fixed at 2.8V
• Output current capability of 250mA
• Maximum input voltage of 5.5V
• Surface mount package classification (4-ZQFN or compatible 4-pin DFN variants)
• Enable control feature
• Over-current and over-temperature protection
• Operating temperature range of -40°C to 85°C
• RoHS3 compliance

Variable Parameters (Allowed Differences):

• Voltage dropout specification (0.155V to 0.6V @ 250mA)
• Quiescent current (3µA to 27µA)
• PSRR performance (75dB to 90dB across specified frequency ranges)
• Manufacturer identity and base product number
• Packaging format (Cut Tape, Digi-Reel, or Tape & Reel)
• Inventory availability

Parts meeting all mandatory criteria are classified as parametric equivalents and direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

RT9073A-28GQZ (Richtek USA Inc.)

This part is a direct parametric equivalent with identical output voltage, current, and input specifications. The RT9073A-28GQZ maintains the same 4-ZQFN package footprint and operating temperature range. Differences include lower quiescent current (3µA versus 25µA) and higher voltage dropout (0.6V versus 0.25V). Both parts are active products with RoHS3 compliance and REACH unaffected status. Inventory availability is significantly higher for this substitute (85,300 units in stock).

AP7353-28FS4-7 (Diodes Incorporated)

This part meets all mandatory electrical equivalence criteria with identical output voltage, current, and input specifications. The AP7353-28FS4-7 is qualified to AEC-Q100 automotive standards and operates within the same temperature range. The package designation differs (X2-DFN1010-4 Type B versus 4-ZQFN), though both are classified as 4-XDFN exposed pad surface mount packages. This part exhibits superior voltage dropout performance (0.155V) and higher PSRR (90dB ~ 70dB). Product status is active with RoHS3 compliance and REACH unaffected status. Inventory availability is lower (1,008 units in stock).

All three parts are actively produced, fully compliant with environmental regulations, and suitable for direct substitution within the specified parameter constraints.

Frequently Asked Questions (FAQ)

Q: Can RT9073A-28GQZ replace RT9086-28GQZ in all applications?

A: RT9073A-28GQZ is a parametric equivalent with identical output voltage (2.8V), output current (250mA), input voltage rating (5.5V), and package type (4-ZQFN). The primary difference is voltage dropout specification (0.6V versus 0.25V). Applications sensitive to dropout voltage performance may require evaluation of this parameter difference.

Q: What is the package compatibility between RT9086-28GQZ and AP7353-28FS4-7?

A: Both parts use 4-pin surface mount packages classified as 4-XDFN exposed pad. RT9086-28GQZ uses 4-ZQFN (1x1) packaging, while AP7353-28FS4-7 uses X2-DFN1010-4 (Type B) packaging. Physical footprint compatibility must be verified against PCB layout specifications, as package designations may indicate dimensional variations.

Q: Are there compliance differences between these substitute parts?

A: All three parts are RoHS3 compliant and REACH unaffected. AP7353-28FS4-7 carries additional AEC-Q100 automotive qualification. Selection based on compliance requirements depends on application-specific standards.

Q: How do quiescent current differences affect part selection?

A: RT9086-28GQZ specifies 25µA quiescent current, RT9073A-28GQZ specifies 3µA, and AP7353-28FS4-7 specifies 27µA. Applications with strict standby power consumption requirements should account for these differences. RT9073A-28GQZ offers the lowest quiescent current performance.

Q: What is the significance of voltage dropout differences?

A: Voltage dropout determines the minimum input-to-output voltage differential required for regulation. RT9086-28GQZ specifies 0.25V dropout, RT9073A-28GQZ specifies 0.6V, and AP7353-28FS4-7 specifies 0.155V. Applications with low input voltage margins require lower dropout specifications.

Q: Can these parts be used interchangeably on the same PCB?

A: Electrical substitution is valid across all three parts. Physical substitution requires verification of package footprint compatibility. RT9086-28GQZ and RT9073A-28GQZ use identical 4-ZQFN packaging. AP7353-28FS4-7 uses X2-DFN1010-4 packaging, which may have different physical dimensions despite similar electrical classification.

Q: What inventory considerations apply to these substitutes?

A: RT9086-28GQZ has 2,726 units in stock. RT9073A-28GQZ has 85,300 units in stock. AP7353-28FS4-7 has 1,008 units in stock. Substitute selection may be influenced by availability and supply chain lead times.