UCC2805D Equivalent & Substitute Parts

Part Overview

The UCC2805D is an active PWM controller manufactured by Texas Instruments, designed for multiple power supply topologies. This 8-SOIC surface mount integrated circuit operates as a power management controller with input voltage range of -0.3V to 6.3V and supply voltage range of 3.6V to 11V. The device is currently in active production status with 1900 units in stock. Substitute parts are identified when design requirements necessitate alternative sourcing, enhanced performance specifications, or improved availability across different manufacturing regions.

Substiute Parts

UCC2805D

Texas InstrumentsIn Stock: 1977UCC2805D Datasheet

Current PartRFQ

UCC2813D-5

Texas InstrumentsIn Stock: 2257UCC2813D-5 Datasheet

Parametric EquivalentRFQ

ISL6843IBZ-T

Renesas Electronics CorporationIn Stock: 17765ISL6843IBZ-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the UCC2805D are identified based on strict alignment with the following critical parameters:

Package Compatibility: All substitute parts must use the 8-SOIC (0.154", 3.90mm Width) surface mount package to ensure direct PCB footprint compatibility.

Voltage Supply Range: Substitute parts must operate within or encompass the 3.6V to 11V supply voltage specification of the main part.

Mounting Type: Surface mount technology is mandatory for all substitutes.

Regulatory Compliance: All substitute parts must maintain ROHS3 compliance and REACH unaffected status.

Product Status: Active production status ensures long-term availability and supply chain reliability.

The UCC2813D-5 qualifies as a parametric equivalent based on identical package geometry, overlapping supply voltage range (3.6V ~ 12V), and matching surface mount configuration. The ISL6843IBZ-T qualifies as a manufacturer-recommended alternative despite extended supply voltage range (9V ~ 16V) due to identical package specification, active product status, and enhanced control features including synchronous rectifier capability.

Parameter Comparison

Engineering Selection Recommendations

UCC2813D-5 Selection Criteria: This Texas Instruments part maintains identical manufacturer lineage and package specification. The supply voltage range of 3.6V to 12V fully encompasses the UCC2805D operating window. Operating temperature range of -40°C to 85°C is narrower than the main part. This substitute is suitable for applications where the upper temperature limit of 85°C satisfies thermal requirements. Both parts carry MSL 1 rating, indicating superior moisture handling characteristics.

ISL6843IBZ-T Selection Criteria: This Renesas Electronics part provides identical 8-SOIC package geometry and active product status. The supply voltage range of 9V to 16V requires verification that circuit design operates within this window. Operating temperature range extends to 105°C, providing enhanced thermal margin. The MSL 3 rating requires controlled storage conditions (168 hours maximum). This substitute is suitable for applications requiring extended temperature operation or enhanced control features including synchronous rectifier capability and higher duty cycle support (96% maximum).

Selection between substitutes depends on specific application thermal requirements, supply voltage constraints, and moisture sensitivity handling capabilities during storage and assembly.

Frequently Asked Questions (FAQ)

Q: Can UCC2813D-5 be used as a direct replacement for UCC2805D?

A: UCC2813D-5 provides direct PCB footprint compatibility through identical 8-SOIC package specification. Supply voltage range of 3.6V to 12V encompasses the UCC2805D requirement of 3.6V to 11V. However, the operating temperature maximum of 85°C is lower than the UCC2805D specification of 125°C. Substitution is valid only when application thermal requirements do not exceed 85°C.

Q: What are the key differences between UCC2813D-5 and ISL6843IBZ-T?

A: Both parts share identical 8-SOIC package geometry. UCC2813D-5 maintains Texas Instruments manufacturing with MSL 1 moisture rating and 49% maximum duty cycle. ISL6843IBZ-T is manufactured by Renesas Electronics with MSL 3 moisture rating, higher 96% maximum duty cycle, and synchronous rectifier capability. Supply voltage ranges differ: UCC2813D-5 operates 3.6V to 12V while ISL6843IBZ-T operates 9V to 16V.

Q: Is the ISL6843IBZ-T supply voltage range of 9V to 16V compatible with UCC2805D applications?

A: ISL6843IBZ-T supply voltage range begins at 9V minimum, which is higher than the UCC2805D lower limit of 3.6V. This substitute is compatible only with applications where the circuit supply voltage remains at or above 9V throughout operation.

Q: What does MSL 3 (168 Hours) mean for ISL6843IBZ-T?

A: MSL 3 indicates the part requires controlled storage conditions with maximum exposure to 85°C and 85% relative humidity limited to 168 hours. After this period, the component must be baked before assembly. UCC2805D and UCC2813D-5 carry MSL 1 rating, which allows unlimited storage without baking requirements.

Q: Are all three parts ROHS3 compliant?

A: Yes. UCC2805D, UCC2813D-5, and ISL6843IBZ-T all carry ROHS3 compliance certification and REACH unaffected status, meeting current environmental and regulatory requirements.