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Texas Instruments LP873345RHDT
- Part No.:
- LP873345RHDT
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 28-VFQFN Exposed Pad
- Datasheet:
-
LP873345RHDT.pdf
- Description:
- DUAL HIGH-CURRENT BUCK CONVERTER
- Quantity:
- Payment:
- Shipping:
Inventory:245
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Product details
Overview
LP873345RHDT 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, LP873345RHDT 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 LP873345RHDT datasheet, LP873345RHDT pinout, LP873345RHDT application, or LP873345RHDT 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, LP873345RHDT 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.
LP873345RHDT 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 | LP873345 RHDT is an OTP-configured option with suffix-specific voltage and sequencing defaults. |
| Package | RHD suffix indicates a VQFN package family option. |
| Applications | Automotive processors, embedded computing, infotainment, camera, and industrial systems. |
Pinout & Package
The LP873345RHDT 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 LP873345RHDT 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, LP873345RHDT should be selected when its exact orderable suffix and configuration match the board requirement. LP873345RHDT vs TPS65023 selection depends on rail current, I2C control needs, OTP defaults, package, and processor power-tree architecture.
Quality
LP873345RHDT 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
LP873345RHDT 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 LP8733 product family is a configurable multi-output PMIC series with two buck converters, two LDO regulators, I2C control, dynamic voltage scaling, and sequencing functions for processor-based embedded systems.
FAQ
What is LP873345RHDT used for?
LP873345RHDT is used for automotive, industrial, camera, infotainment, and application processor systems requiring two buck rails and two LDO rails.
Where can I find the LP873345RHDT datasheet download?
The LP873345RHDT datasheet is available from Texas Instruments and includes PMIC rail functions, I2C behavior, package data, and application information.
What should be considered in LP873345RHDT 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 LP873345RHDT support I2C control?
Yes. The LP8733 family supports I2C-compatible control and configuration behavior.
What are common LP873345RHDT equivalent solutions?
Common candidates include LP873347RHDT and TPS65023 depending on configuration, rail current, package, and control-interface needs.
LP873345RHDT 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:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 28-VQFN (5x5)
LP873345RHDT FAQ
1.How can I place an order for LP873345RHDT through Aetrix?
Please submit a Request for Quotation (RFQ) for LP873345RHDT 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 LP873345RHDT reliable?
The price and inventory of LP873345RHDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP873345RHDT is usually 5 days.
3.What payment methods are accepted for LP873345RHDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP873345RHDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP873345RHDT?
LP873345RHDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP873345RHDT 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 LP873345RHDT?
For technical support, including LP873345RHDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP873345RHDT requirements.
6.How does Aetrix verify that LP873345RHDT is sourced from the original manufacturer or authorized distributors?
All LP873345RHDT 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 LP873345RHDT meets industry standards.
7.What is the process for return or replacement of LP873345RHDT?
All LP873345RHDT units undergo pre-shipment inspection (PSI). If there is an issue with LP873345RHDT, 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 LP873345RHDT part is unused and in its original packaging.
Return procedure for LP873345RHDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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