LP873347RHDR Equivalent & Substitute Parts

Part Overview

The LP873347RHDR is a Power Management Integrated Circuit (PMIC) manufactured by Texas Instruments, classified as a Voltage Regulator with Linear Switching topology. This device integrates four independent outputs: two Step-Down (Buck) regulators and two Linear (LDO) regulators, operating at a switching frequency of 2MHz. The part is housed in a 28-VQFN (5x5) surface mount package with exposed pad and wettable flank configuration.

The LP873347RHDR is currently in Active product status with 6200 units in stock. Equivalent and substitute parts are necessary when addressing supply chain constraints, design revisions requiring automotive-grade qualification, or when alternative packaging variants are required for specific manufacturing processes.

Substiute Parts

LP873347RHDR

Texas InstrumentsIn Stock: 6273LP873347RHDR Datasheet

Current PartRFQ

LP87332ARHDTQ1

Texas InstrumentsIn Stock: 1483LP87332ARHDTQ1 Datasheet

Parametric EquivalentRFQ

LP87332BRHDTQ1

Texas InstrumentsIn Stock: 1385LP87332BRHDTQ1 Datasheet

Parametric EquivalentRFQ

LP87332DRHDT

Texas InstrumentsIn Stock: 1142LP87332DRHDT Datasheet

Parametric EquivalentRFQ

LP87332DRHDTQ1

Texas InstrumentsIn Stock: 1096LP87332DRHDTQ1 Datasheet

Parametric EquivalentRFQ

LP873347RHDT

Texas InstrumentsIn Stock: 1523LP873347RHDT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LP873347RHDR is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Topology: Step-Down (Buck) (2), Linear (LDO) (2)
• Number of Outputs: 4
• Frequency - Switching: 2MHz
• Voltage/Current specifications for all outputs
• Voltage - Supply: 2.5V ~ 5.5V
• Operating Temperature: -40°C ~ 125°C (TA)
• Package / Case: 28-VFQFN Exposed Pad
• Supplier Device Package: 28-VQFN (5x5)
• Mounting Type: Surface Mount, Wettable Flank
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 2 (1 Year)

All identified substitute parts meet these mandatory parameters. Differences in automotive qualification (AEC-Q100) and grade designation represent variant classifications within the same electrical and mechanical specification set, not functional deviations.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain electrical and mechanical equivalence to the LP873347RHDR across all critical parameters. Selection between the main part and substitutes should be based on the following criteria:

For non-automotive applications: LP873347RHDR and LP873347RHDT are suitable. LP873347RHDR offers the highest inventory availability at 6200 units.

For automotive applications requiring AEC-Q100 qualification: LP87332ARHDTQ1, LP87332BRHDTQ1, and LP87332DRHDTQ1 are qualified options. These parts carry automotive-grade designation and AEC-Q100 qualification status.

For applications with flexible automotive requirements: LP87332DRHDT provides automotive-grade classification without explicit AEC-Q100 designation, with 1068 units available.

All parts maintain Active product status, ROHS3 compliance, and identical MSL ratings. Packaging and mounting specifications are uniform across all variants, ensuring direct PCB-level compatibility.

Frequently Asked Questions (FAQ)

Q: Can LP87332ARHDTQ1 be used as a direct replacement for LP873347RHDR?

A: Yes. Both parts share identical electrical specifications (topology, output configurations, voltage/current ratings, switching frequency, supply voltage range, and operating temperature). Both are housed in 28-VQFN (5x5) packages with identical mounting and wettable flank specifications. The primary difference is that LP87332ARHDTQ1 carries automotive-grade designation and AEC-Q100 qualification, which represents an enhancement rather than a limitation.

Q: What is the difference between LP873347RHDR and LP873347RHDT?

A: These parts are electrically and mechanically identical. The difference lies in packaging designation within the Tape & Reel (TR) category. Both maintain the same 28-VQFN (5x5) footprint, electrical performance, and compliance status. LP873347RHDR has higher inventory availability.

Q: Are the LP87332 series parts compatible with designs specified for LP873347?

A: Yes. The LP87332 series (ARHDTQ1, BRHDTQ1, DRHDT, DRHDTQ1) are parametrically equivalent to LP873347 variants. All four outputs, switching frequency, voltage ranges, and package specifications are identical. The LP87332 designation indicates a different product line variant, but functional compatibility is complete.

Q: Which substitute part should be selected for automotive applications?

A: LP87332ARHDTQ1, LP87332BRHDTQ1, or LP87332DRHDTQ1 are appropriate for automotive applications. These three parts carry automotive-grade classification and AEC-Q100 qualification. LP87332DRHDTQ1 offers the highest inventory among AEC-Q100 qualified options at 1069 units.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance status, matching the LP873347RHDR specification.

Q: What is the significance of the "Wettable Flank" specification?

A: Wettable flank is a package feature that allows solder to flow along the side of the lead frame during reflow soldering, improving solder joint reliability and inspectability. All listed parts share this specification, ensuring consistent manufacturing process compatibility.

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

A: Yes. All parts share identical 28-VQFN (5x5) package dimensions, pin configurations, and surface mount specifications. No PCB redesign or assembly process modification is required for substitution.