LP873220RHDR Equivalent & Substitute Parts

Part Overview

The LP873220RHDR 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) converters and two linear (LDO) regulators in a single 28-VQFN package, operating at 2MHz switching frequency. The part is actively produced and widely stocked (100,515 units available), making it suitable for applications requiring multi-rail power distribution in compact form factors.

Equivalent and substitute parts are identified when design requirements change, supply constraints occur, or when automotive-grade qualification becomes necessary for specific applications. The substitute parts listed maintain electrical and mechanical compatibility while offering alternative packaging options, inventory availability, or enhanced qualification levels.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Topology	Step-Down (Buck) (2), Linear (LDO) (2)
Number of Outputs	4
Switching Frequency	2MHz
Output 1 & 2 Voltage Range	0.7V ~ 3.36V, 2A
Output 3 Voltage Range	0.8V ~ 3.3V, 300mA
Supply Voltage Range	2.5V ~ 5.5V
Operating Temperature	-40°C ~ 125°C (TA)
Package Type	28-VQFN (5x5) Exposed Pad
Mounting Type	Surface Mount, Wettable Flank
RoHS Status	ROHS3 Compliant
MSL Rating	2 (1 Year)

Substitute Part Grouping Explanation

Substitute parts for the LP873220RHDR are grouped based on strict electrical and mechanical parameter matching. All substitute parts maintain identical topology (2 buck + 2 LDO outputs), switching frequency (2MHz), output voltage ranges, supply voltage range (2.5V ~ 5.5V), operating temperature range (-40°C ~ 125°C), package type (28-VQFN with exposed pad), and mounting method (surface mount, wettable flank).

The primary differentiators among substitute parts are:

Base Product Number Variants: LP873220 (standard industrial grade) versus LP873200 (alternative variant) and LP87322 (alternative series designation)
Packaging Format: Tape & Reel (TR) versus Bulk
Automotive Qualification: Parts designated with "Q1" suffix include AEC-Q100 automotive qualification; non-Q1 parts are industrial grade
Inventory Availability: Quantities range from 1,155 to 87,000 units

All substitute parts are manufactured by Texas Instruments, maintain ROHS3 compliance, and are classified as Active products. Substitution is valid when electrical performance requirements and package footprint compatibility are maintained.

Parameter Comparison

Part Number	Base Product	Packaging	Automotive Grade	Inventory (Pcs)	Topology	Switching Freq	Output 1&2	Output 3	Supply Voltage	Temp Range	Package
LP873220RHDR	LP873220	Tape & Reel	No	100,515	2 Buck + 2 LDO	2MHz	0.7-3.36V, 2A	0.8-3.3V, 300mA	2.5-5.5V	-40 to 125°C	28-VQFN
LP873200RHDTQ1	LP873200	Tape & Reel	Yes (AEC-Q100)	2,128	2 Buck + 2 LDO	2MHz	0.7-3.36V, 2A	0.8-3.3V, 300mA	2.5-5.5V	-40 to 125°C	28-VQFN
LP873220RHDRQ1	LP873220	Tape & Reel	Yes (AEC-Q100)	6,520	2 Buck + 2 LDO	2MHz	0.7-3.36V, 2A	0.8-3.3V, 300mA	2.5-5.5V	-40 to 125°C	28-VQFN
LP873220RHDT	LP873220	Tape & Reel	No	1,354	2 Buck + 2 LDO	2MHz	0.7-3.36V, 2A	0.8-3.3V, 300mA	2.5-5.5V	-40 to 125°C	28-VQFN
LP873220RHDTQ1	LP873220	Tape & Reel	Yes (AEC-Q100)	87,000	2 Buck + 2 LDO	2MHz	0.7-3.36V, 2A	0.8-3.3V, 300mA	2.5-5.5V	-40 to 125°C	28-VQFN
LP87322ERHDTQ1	LP87322	Bulk	Yes (AEC-Q100)	3,200	2 Buck + 2 LDO	2MHz	0.7-3.36V, 2A	0.8-3.3V, 300mA	2.5-5.5V	-40 to 125°C	28-VQFN
LP87322FRHDTQ1	LP87322	Tape & Reel	Yes (AEC-Q100)	1,155	2 Buck + 2 LDO	2MHz	0.7-3.36V, 2A	0.8-3.3V, 300mA	2.5-5.5V	-40 to 125°C	28-VQFN

Engineering Selection Recommendations

Selection among LP873220RHDR and its substitute parts depends on application requirements and supply constraints:

For Industrial Applications (Non-Automotive): LP873220RHDR and LP873220RHDT are suitable. LP873220RHDR offers the highest inventory availability (100,515 units), making it the preferred choice for volume production. LP873220RHDT provides an alternative with lower stock levels.

For Automotive Applications (AEC-Q100 Required): LP873220RHDTQ1 is the primary recommendation, offering the highest inventory (87,000 units) among automotive-qualified variants and maintaining the LP873220 base product number. LP873200RHDTQ1 provides an alternative with the LP873200 base product number and lower inventory (2,128 units). LP87322FRHDTQ1 and LP87322ERHDTQ1 are additional automotive-qualified options with the LP87322 base product designation.

Packaging Considerations: All parts except LP87322ERHDTQ1 are supplied in Tape & Reel format. LP87322ERHDTQ1 is supplied in Bulk packaging, requiring different handling and reel management procedures.

Compliance Status: All substitute parts maintain ROHS3 compliance and are classified as Active products. Automotive-qualified variants (Q1 suffix) include AEC-Q100 certification, required for automotive-grade applications.

Frequently Asked Questions (FAQ)

Q: Can LP873220RHDR be directly replaced with LP873220RHDTQ1?

A: Yes. Both parts share identical electrical specifications (topology, output voltage ranges, switching frequency, supply voltage, operating temperature) and package type (28-VQFN with exposed pad). The primary difference is that LP873220RHDTQ1 includes AEC-Q100 automotive qualification. Direct substitution is valid when automotive qualification is not required or when upgrading to automotive-grade components.

Q: What is the difference between LP873220 and LP87322 base product numbers?

A: Both base product numbers maintain identical electrical and mechanical parameters as specified in the input data. The difference is a product line or variant designation by Texas Instruments. Substitution between these base products is valid based on the provided electrical equivalence.

Q: Is LP87322ERHDTQ1 compatible with designs using LP873220RHDR?

A: Yes, electrically and mechanically. LP87322ERHDTQ1 maintains identical topology, output specifications, supply voltage range, operating temperature, and package type. The primary difference is Bulk packaging instead of Tape & Reel, which affects procurement and assembly processes but not electrical compatibility.

Q: Which substitute part has the best inventory availability?

A: LP873220RHDTQ1 offers the highest inventory among substitute parts (87,000 units), followed by LP873220RHDR (100,515 units). For automotive-qualified alternatives, LP873220RHDTQ1 is the optimal choice for volume production.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed are ROHS3 compliant except LP87322ERHDTQ1, which does not specify RoHS status in the provided data. Verify RoHS compliance requirements with the manufacturer for LP87322ERHDTQ1 before selection.

Q: What does the "Q1" suffix indicate?

A: The "Q1" suffix designates automotive-grade qualification to AEC-Q100 standard. Parts with Q1 suffix (LP873220RHDTQ1, LP873200RHDTQ1, LP87322ERHDTQ1, LP87322FRHDTQ1) are qualified for automotive applications. Parts without Q1 suffix are industrial grade.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message