LP87332DRHDR Equivalent & Substitute Parts

Part Overview

The LP87332DRHDR is a quad-output power management integrated circuit (PMIC) manufactured by Texas Instruments, classified as a voltage regulator with linear switching topology. This device integrates two step-down (buck) regulators and two linear (LDO) regulators in a 28-VQFN surface mount package. The part is currently in active product status with 903 units in stock.

Substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain considerations, or specific application qualifications such as automotive-grade certifications.

Key Parameters

Parameter	Value
Manufacturer Part Number	LP87332DRHDR
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)
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the LP87332DRHDR are grouped based on electrical and mechanical parameter equivalence. All identified substitutes maintain identical specifications across the following critical parameters:

Topology: Step-Down (Buck) (2), Linear (LDO) (2)
Number of Outputs: 4
Switching Frequency: 2MHz
Output voltage and current ratings for all four channels
Supply voltage range: 2.5V ~ 5.5V
Operating temperature range: -40°C ~ 125°C
Package type: 28-VQFN (5x5) with exposed pad
Mounting type: Surface Mount, Wettable Flank
RoHS3 compliance and MSL rating

Substitutes are differentiated by base product number (LP87332 versus LP873347) and qualification status. Automotive-grade variants (LP87332ARHDTQ1, LP87332BRHDTQ1, LP87332DRHDTQ1) include AEC-Q100 qualification, while non-qualified variants (LP87332DRHDT, LP873347RHDR, LP873347RHDT) are suitable for industrial and commercial applications.

Parameter Comparison

Part Number	Base Product	Topology	Outputs	Frequency	Output 1 (V/I)	Output 2 (V/I)	Output 3 (V/I)	Supply (V)	Temp Range	Package	Grade	Qualification	Inventory
LP87332DRHDR	LP87332	Buck (2), LDO (2)	4	2MHz	0.7-3.36V, 3A	0.7-3.36V, 3A	0.8-3.3V, 300mA	2.5-5.5V	-40 to 125°C	28-VQFN	Industrial	None	903 Pcs
LP87332ARHDTQ1	LP87332	Buck (2), LDO (2)	4	2MHz	0.7-3.36V, 3A	0.7-3.36V, 3A	0.8-3.3V, 300mA	2.5-5.5V	-40 to 125°C	28-VQFN	Automotive	AEC-Q100	1375 Pcs
LP87332BRHDTQ1	LP87332	Buck (2), LDO (2)	4	2MHz	0.7-3.36V, 3A	0.7-3.36V, 3A	0.8-3.3V, 300mA	2.5-5.5V	-40 to 125°C	28-VQFN	Automotive	AEC-Q100	1349 Pcs
LP87332DRHDT	LP87332	Buck (2), LDO (2)	4	2MHz	0.7-3.36V, 3A	0.7-3.36V, 3A	0.8-3.3V, 300mA	2.5-5.5V	-40 to 125°C	28-VQFN	Industrial	None	1068 Pcs
LP87332DRHDTQ1	LP87332	Buck (2), LDO (2)	4	2MHz	0.7-3.36V, 3A	0.7-3.36V, 3A	0.8-3.3V, 300mA	2.5-5.5V	-40 to 125°C	28-VQFN	Automotive	AEC-Q100	1069 Pcs
LP873347RHDR	LP873347	Buck (2), LDO (2)	4	2MHz	0.7-3.36V, 3A	0.7-3.36V, 3A	0.8-3.3V, 300mA	2.5-5.5V	-40 to 125°C	28-VQFN	Industrial	None	6200 Pcs
LP873347RHDT	LP873347	Buck (2), LDO (2)	4	2MHz	0.7-3.36V, 3A	0.7-3.36V, 3A	0.8-3.3V, 300mA	2.5-5.5V	-40 to 125°C	28-VQFN	Industrial	None	1464 Pcs

Engineering Selection Recommendations

Selection of substitute parts should be based on application requirements and compliance mandates:

For industrial and commercial applications: LP87332DRHDT, LP873347RHDR, and LP873347RHDT are suitable direct substitutes. These parts maintain identical electrical specifications and package compatibility with the LP87332DRHDR while offering higher inventory availability in certain variants.

For automotive applications: LP87332ARHDTQ1, LP87332BRHDTQ1, and LP87332DRHDTQ1 are qualified alternatives. These parts carry AEC-Q100 qualification and automotive-grade designation, meeting requirements for automotive power management systems. Selection among these three variants depends on specific design qualification requirements and supply chain availability.

Packaging consideration: All substitute parts use identical 28-VQFN (5x5) surface mount packages with wettable flanks, ensuring PCB layout and assembly process compatibility without redesign.

Compliance: All parts maintain ROHS3 compliance, MSL Level 2 (1 Year) moisture sensitivity rating, and identical regulatory classifications (ECCN: EAR99, HTSUS: 8542.39.0001).

Frequently Asked Questions (FAQ)

Q: Can LP873347RHDR be used as a direct replacement for LP87332DRHDR?

A: Yes. Both parts share identical electrical specifications, output configurations, switching frequency, and package type. The primary difference is the base product number (LP873347 versus LP87332). Electrical and mechanical parameters are equivalent, making them functionally interchangeable in circuit design.

Q: What is the difference between automotive-grade and industrial-grade variants?

A: Automotive-grade variants (LP87332ARHDTQ1, LP87332BRHDTQ1, LP87332DRHDTQ1) carry AEC-Q100 qualification, indicating compliance with automotive reliability and quality standards. Industrial-grade variants lack this qualification. Selection depends on application requirements; automotive applications typically mandate AEC-Q100 qualified components.

Q: Are there any differences in electrical performance between LP87332 and LP873347 base products?

A: No. Both base products maintain identical topology, output specifications, switching frequency, supply voltage range, and operating temperature range. Substitution between these base products is electrically valid.

Q: Does package type differ between substitute parts?

A: No. All substitute parts use the 28-VQFN (5x5) surface mount package with exposed pad and wettable flank configuration. PCB layout and assembly processes remain unchanged across all listed substitutes.

Q: Which substitute part offers the highest inventory availability?

A: LP873347RHDR currently has the highest inventory level at 6200 units in stock, compared to 903 units for the original LP87332DRHDR.

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