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Product Detailed Parameters
- Description：IC REG QUAD BUCK/LNR 2MHZ 28VQFN
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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：No
- Voltage - Supply：2.8V ~ 5.5V
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount, Wettable Flank
- Package / Case：28-VFQFN Exposed Pad
- Supplier Device Package：28-VQFN (5x5)
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The LP873300RHDRQ1 is an automotive-grade PMIC featuring dual 3-A buck converters and a dual linear regulator, housed in a VQFN-28 package. It operates within an input voltage range of 2.8 V to 5.5 V. The buck outputs provide adjustable voltages from 700 mV to 3.6 V with up to 3 A current capability. The device meets AEC-Q100 standards for automotive applications, supporting operating temperatures from -40°C to +125°C.
Feature Summary
- Integrates two high-current synchronous buck converters and two low-dropout regulators for comprehensive power management.
- Supports I2C control interface for programmable configuration and monitoring capabilities.
- Includes integrated power sequencing and power-good signals to ensure reliable system startup.
- Features spread-spectrum clock generation to minimize electromagnetic interference.
Applications
- Automotive infotainment systems
- Digital cockpit displays
- Advanced driver-assistance systems (ADAS)
- Telematics control units
Procurement Notes
Verify the specific suffix 'RHDR' confirms the VQFN-28 package and reel packaging format. Confirm the 'Q1' designation indicates AEC-Q100 qualification for automotive reliability requirements. Ensure compatibility with the intended operating temperature range of -40°C to +125°C before finalizing procurement specifications.
Selection Notes
Select this component when dual high-current buck conversion is required alongside auxiliary LDO regulation in a compact footprint. The 3-A output current per buck converter supports high-power loads typical in modern automotive electronics. Consider the VQFN-28 package for thermal performance and board space constraints compared to larger packages.
Part Context
This part belongs to the LP8733 family of specialized PMICs designed for Texas Instruments TDAx processors. It provides a consolidated solution for generating multiple voltage rails efficiently. The integration reduces component count and simplifies layout compared to discrete regulator solutions.
Replacement Considerations
LP87332DRHDRQ1 offers similar functionality but with different output configurations including lower current options. LP87334FRHDR is a non-automotive grade alternative with comparable electrical characteristics but lacks AEC-Q100 certification.
