LP87332DRHDT Equivalent & Substitute Parts

Part Overview

The LP87332DRHDT is a quad-output power management integrated circuit (PMIC) manufactured by Texas Instruments. This device integrates two step-down (buck) regulators and two linear (LDO) regulators in a single 28-VQFN package, operating at 2MHz switching frequency. The part is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified based on matching electrical specifications, package configuration, and operational parameters to ensure functional interchangeability in power management applications.

Key Parameters

Parameter	Specification
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Topology	Step-Down (Buck) (2), Linear (LDO) (2)
Number of Outputs	4
Frequency - Switching	2MHz
Voltage/Current - Output 1	0.7V ~ 3.36V, 3A
Voltage/Current - Output 2	0.7V ~ 3.36V, 3A
Voltage/Current - Output 3	0.8V ~ 3.3V, 300mA
Voltage - Supply	2.5V ~ 5.5V
Operating Temperature	-40°C ~ 125°C (TA)
Package / Case	28-VFQFN Exposed Pad
Mounting Type	Surface Mount, Wettable Flank
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	2 (1 Year)

Substitute Part Grouping Explanation

Substitute parts for the LP87332DRHDT are identified based on strict electrical and mechanical parameter matching. The primary substitution criteria are:

Identical topology: Step-Down (Buck) (2), Linear (LDO) (2)
Matching number of outputs: 4
Identical switching frequency: 2MHz
Matching output voltage and current specifications for all four outputs
Identical supply voltage range: 2.5V ~ 5.5V
Identical operating temperature range: -40°C ~ 125°C
Identical package configuration: 28-VFQFN Exposed Pad with Surface Mount, Wettable Flank
Identical MSL rating: 2 (1 Year)
RoHS3 compliance

Substitute parts are grouped into two categories: industrial-grade variants (LP87332DRHDT, LP873347RHDT, LP873347RHDR) and automotive-grade variants with AEC-Q100 qualification (LP87332ARHDTQ1, LP87332BRHDTQ1, LP87332DRHDTQ1).

Parameter Comparison

Part Number	Manufacturer	Topology	Outputs	Frequency	Output 1 (V/I)	Output 2 (V/I)	Output 3 (V/I)	Supply Voltage	Temp Range	Package	Grade	Inventory
LP87332DRHDT	Texas Instruments	Buck (2), LDO (2)	4	2MHz	0.7V~3.36V, 3A	0.7V~3.36V, 3A	0.8V~3.3V, 300mA	2.5V~5.5V	-40°C~125°C	28-VFQFN	Industrial	1068 Pcs
LP87332ARHDTQ1	Texas Instruments	Buck (2), LDO (2)	4	2MHz	0.7V~3.36V, 3A	0.7V~3.36V, 3A	0.8V~3.3V, 300mA	2.5V~5.5V	-40°C~125°C	28-VFQFN	Automotive (AEC-Q100)	1375 Pcs
LP87332BRHDTQ1	Texas Instruments	Buck (2), LDO (2)	4	2MHz	0.7V~3.36V, 3A	0.7V~3.36V, 3A	0.8V~3.3V, 300mA	2.5V~5.5V	-40°C~125°C	28-VFQFN	Automotive (AEC-Q100)	1349 Pcs
LP87332DRHDTQ1	Texas Instruments	Buck (2), LDO (2)	4	2MHz	0.7V~3.36V, 3A	0.7V~3.36V, 3A	0.8V~3.3V, 300mA	2.5V~5.5V	-40°C~125°C	28-VFQFN	Automotive (AEC-Q100)	1069 Pcs
LP873347RHDR	Texas Instruments	Buck (2), LDO (2)	4	2MHz	0.7V~3.36V, 3A	0.7V~3.36V, 3A	0.8V~3.3V, 300mA	2.5V~5.5V	-40°C~125°C	28-VFQFN	Industrial	6200 Pcs
LP873347RHDT	Texas Instruments	Buck (2), LDO (2)	4	2MHz	0.7V~3.36V, 3A	0.7V~3.36V, 3A	0.8V~3.3V, 300mA	2.5V~5.5V	-40°C~125°C	28-VFQFN	Industrial	1464 Pcs

Engineering Selection Recommendations

All listed substitute parts maintain identical electrical specifications and package configurations with the LP87332DRHDT. Selection between industrial-grade and automotive-grade variants depends on application requirements:

Industrial-grade parts (LP87332DRHDT, LP873347RHDT, LP873347RHDR) are suitable for general consumer and industrial applications where AEC-Q100 qualification is not required.

Automotive-grade parts (LP87332ARHDTQ1, LP87332BRHDTQ1, LP87332DRHDTQ1) carry AEC-Q100 qualification and are required for automotive applications subject to automotive reliability and quality standards.

All parts are RoHS3 compliant, REACH unaffected, and carry identical MSL ratings. Inventory availability varies across part numbers, with LP873347RHDR offering the highest stock level at 6200 pieces.

Frequently Asked Questions (FAQ)

Q: Can LP87332DRHDT be directly replaced with LP873347RHDT? A: Yes. Both parts share identical electrical specifications, topology, output configurations, switching frequency, voltage ranges, and package configuration (28-VFQFN). Direct substitution is electrically and mechanically compatible.

Q: What is the difference between industrial-grade and automotive-grade variants? A: Automotive-grade variants (LP87332ARHDTQ1, LP87332BRHDTQ1, LP87332DRHDTQ1) carry AEC-Q100 qualification, indicating compliance with automotive reliability and quality standards. Industrial-grade variants do not carry this qualification. Electrical and mechanical specifications are identical.

Q: Are all substitute parts in the same package? A: Yes. All listed substitute parts use the 28-VFQFN Exposed Pad package with Surface Mount, Wettable Flank configuration. PCB layout and footprint compatibility is maintained across all substitutes.

Q: Can automotive-grade parts be used in industrial applications? A: Yes. Automotive-grade parts meet or exceed industrial specifications and can be used in industrial applications. The reverse substitution (industrial-grade in automotive applications) is not recommended without design review.

Q: Are there any differences in MSL or moisture sensitivity? A: No. All parts carry identical MSL rating of 2 (1 Year), indicating identical moisture sensitivity and storage requirements.

Q: What is the base product number significance? A: The base product number identifies the core design. LP87332 and LP873347 represent different design variants within the same functional category. Both are functionally equivalent for the specified parameters.

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