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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear + Switching

Texas Instruments LP873344RHDTQ1

Name: LP873344RHDTQ1
Brand: Texas Instruments
SKU: LP873344RHDTQ1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LP873344RHDTQ1

Manufacturer:: Texas Instruments

Category:: Voltage Regulators - Linear + Switching

Package:: 28-VFQFN Exposed Pad

Datasheet:: LP873344RHDTQ1.pdf

Description:: AUTOMOTIVE DUAL 3-A BUCK CONVERT

Quantity:: RFQ Add To RFQ list

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Inventory:250

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Product details

Overview

LP873344RHDTQ1 from Texas Instruments is a multi-output PMIC integrating two high-current buck converters and two LDO regulators for processor and automotive embedded power rails. The device is designed for compact systems that need configurable switching outputs, low-noise auxiliary rails, and sequencing control through a small VQFN package.

As part of the TI LP8733 product family, LP873344RHDTQ1 supports dual buck conversion, dual LDO regulation, I2C-compatible control, dynamic voltage scaling, power-good monitoring, and OTP-defined configuration options for specific platforms. For engineers reviewing the LP873344RHDTQ1 datasheet, LP873344RHDTQ1 pinout, LP873344RHDTQ1 application, or LP873344RHDTQ1 equivalent, this device is widely used in automotive processor modules, infotainment systems, industrial embedded boards, application processor rails, camera systems, and compact multi-rail power architectures.

Technical Context

In processor-based embedded systems, LP873344RHDTQ1 operates as a configurable four-rail PMIC. The two buck converters provide efficient high-current rails, while the two LDO regulators supply lower-noise auxiliary outputs for analog, sensor, or peripheral circuitry.

The I2C-compatible interface and dynamic voltage scaling support software-controlled rail behavior, which is useful when processors change operating modes or enter low-power states. OTP configuration determines default output voltages and sequencing behavior for a specific orderable option.

LP873344RHDTQ1 is commonly used in automotive and industrial designs where rail sequencing, power-good reporting, compact package size, and configurable output behavior are important to the system power architecture.

Key Specifications

Parameter	Value and Actual Design Meaning
Device Type	Multi-output PMIC with two buck converters and two LDO regulators.
Buck Outputs	Dual high-current step-down regulators for processor or system rails.
LDO Outputs	Two LDO regulators for low-noise auxiliary rails.
Interface	I2C-compatible control supports configuration and monitoring.
Power Management	Dynamic voltage scaling, sequencing, and power-good functions support processor platforms.
Configuration	LP873344-Q1 is an automotive-qualified LP8733xx configuration for multi-rail processor supply.
Package	RHD suffix indicates a VQFN package family option.
Applications	Automotive processors, embedded computing, infotainment, camera, and industrial systems.

Pinout & Package

The LP873344RHDTQ1 pinout includes buck input and switch pins, LDO outputs, I2C control pins, enable and power-good functions, feedback/sense connections, and thermal ground pins.

For PCB design, each buck converter should have compact inductor and capacitor placement, I2C lines should be routed away from switching nodes, and LDO output capacitors should be placed close to the PMIC.

Pin / Function	PCB Design and Circuit Role
VIN / PVIN	Input supply pins for buck and LDO regulator sections.
SW1 / SW2	Switching nodes for the two buck converters.
BUCK Outputs	Regulated step-down outputs for processor or system rails.
LDO1 / LDO2	Low-dropout regulator outputs for auxiliary loads.
SCL / SDA	I2C-compatible control and configuration interface.
EN / PGOOD	Enable and power-good control or status pins.
FB / Sense	Feedback or sense nodes for output regulation.
GND / Thermal Pad	Ground and thermal return path.

Key Features

Two buck converters and two LDOs support compact four-rail power trees.
I2C-compatible control enables software-managed rail behavior.
Dynamic voltage scaling supports processor power-state changes.
Power-good and sequencing functions support controlled startup.
OTP configuration supports platform-specific voltage defaults.
VQFN package supports dense automotive and embedded layouts.

Applications

Automotive Processor Modules

Industrial Embedded Boards

Use Scenario: Used in vehicle processor and infotainment boards.

IC Role: Supplies configurable core and auxiliary rails.

Use Value: Supports compact Q1-style embedded power design.

Use Scenario: Used in controllers and edge-computing modules.

IC Role: Provides multiple regulated rails with I2C control.

Use Value: Improves rail integration and monitoring.

Camera Systems

Application Processor Rails

Use Scenario: Used in image processing and sensor platforms.

IC Role: Supplies buck and LDO rails for digital and analog sections.

Use Value: Supports small, sequenced power trees.

Use Scenario: Used with SoC and processor platforms.

IC Role: Provides dynamic voltage scaling and power-good behavior.

Use Value: Improves software-managed power efficiency.

Equivalent & Alternatives

When evaluating a LP873344RHDTQ1 equivalent, engineers should compare buck current, LDO current, I2C control, OTP configuration, package, sequencing, dynamic voltage scaling, and automotive qualification needs.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LP873347RHDT	Same LP8733 configuration family with a different packing or orderable suffix.	Used when the same configured PMIC is needed in another packing option.	Compare exact orderable suffix, package, reel/tray format, and availability.
TPS65023	Texas Instruments multi-output PMIC with several DC-DC and LDO rails but different configuration and control behavior.	Used in embedded processor platforms requiring multi-rail power management.	Compare rail count, current ratings, I2C features, package, and default voltage settings.

Compared with LP873347RHDT, LP873344RHDTQ1 should be selected when its exact orderable suffix and configuration match the board requirement. LP873344RHDTQ1 vs TPS65023 selection depends on rail current, I2C control needs, OTP defaults, package, and processor power-tree architecture.

Quality

LP873344RHDTQ1 should be sourced as original Texas Instruments components through traceable supply channels. Quality checks may include VQFN inspection, top-mark validation, solderability testing, and verification of buck, LDO, and I2C functions.

Production validation should include rail sequencing, I2C configuration, output voltage accuracy, dynamic voltage scaling, load-transient response, LDO stability, thermal behavior, and startup timing.

Availability

LP873344RHDTQ1 available at Aetrix Electronics and is suitable for automotive, industrial, camera, infotainment, and processor-based embedded systems requiring configurable multi-rail PMIC supply support.

Supply support may include volume procurement planning, scheduled delivery arrangements, traceable sourcing management, and long-term supply support for OEM, industrial electronics, automotive electronics, and embedded product programs. Sample and NPI supply support, as well as urgent in-stock supply support, can also be arranged for prototype builds, pilot runs, and time-critical production needs.

For production builds, confirming OTP configuration, orderable suffix, package, rail-current budget, software interface, lifecycle status, and sourcing continuity helps reduce procurement risk.

Manufacturer

Texas Instruments is a global semiconductor manufacturer specializing in analog ICs, embedded processors, power-management devices, interface products, sensing solutions, and industrial semiconductor technologies.

The LP873x-Q1 product family is a Texas Instruments automotive multi-output PMIC series integrating two buck converters, two LDO regulators, I2C-compatible control, dynamic voltage scaling, and OTP-defined sequencing for processor-based embedded systems.

FAQ

What is LP873344RHDTQ1 used for?

LP873344RHDTQ1 is used for automotive, industrial, camera, infotainment, and application processor systems requiring two buck rails and two LDO rails.

Where can I find the LP873344RHDTQ1 datasheet download?

The LP873344RHDTQ1 datasheet is available from Texas Instruments and includes PMIC rail functions, I2C behavior, package data, and application information.

What should be considered in LP873344RHDTQ1 pinout design?

Designers should keep buck switch loops compact, route I2C and feedback lines away from switching nodes, and place LDO capacitors close to the PMIC.

Does LP873344RHDTQ1 support I2C control?

Yes. The LP8733 family supports I2C-compatible control and configuration behavior.

What are common LP873344RHDTQ1 equivalent solutions?

Common candidates include LP873347RHDT and TPS65023 depending on configuration, rail current, package, and control-interface needs.

LP873344RHDTQ1 Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 28-VFQFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

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

w/LED Driver:: No

w/Supervisor:: No

w/Sequencer:: Yes

Voltage - Supply:: 2.8V ~ 5.5V

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount, Wettable Flank

Supplier Device Package:: 28-VQFN (5x5)

LP873344RHDTQ1 FAQ

1.How can I place an order for LP873344RHDTQ1 through Aetrix?

Please submit a Request for Quotation (RFQ) for LP873344RHDTQ1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for LP873344RHDTQ1 reliable?

The price and inventory of LP873344RHDTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP873344RHDTQ1 is usually 5 days.

3.What payment methods are accepted for LP873344RHDTQ1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP873344RHDTQ1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LP873344RHDTQ1?

LP873344RHDTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LP873344RHDTQ1 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for LP873344RHDTQ1?

For technical support, including LP873344RHDTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP873344RHDTQ1 requirements.

6.How does Aetrix verify that LP873344RHDTQ1 is sourced from the original manufacturer or authorized distributors?

All LP873344RHDTQ1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LP873344RHDTQ1 meets industry standards.

7.What is the process for return or replacement of LP873344RHDTQ1?

All LP873344RHDTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LP873344RHDTQ1, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The LP873344RHDTQ1 part is unused and in its original packaging.

Return procedure for LP873344RHDTQ1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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