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Product Detailed Parameters
- Description：AUTOMOTIVE DUAL 2-A BUCK CONVERT
- 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, 2A
- Voltage/Current - Output 2：0.7V ~ 3.36V, 2A
- 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)
- 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 LP873244RHDTQ1 is an automotive-grade Power Management IC (PMIC) from the Texas Instruments LP8732 series. It integrates dual high-efficiency synchronous buck converters and two low-dropout linear regulators (LDOs). The device operates with an input voltage range of 2.8 V to 5.5 V. Each buck converter channel provides a maximum output current of 2 A, while the LDO channels deliver up to 300 mA. Output voltages are adjustable from 700 mV to 3.6 V for the buck converters and 800 mV to 3.3 V for the LDOs. The component is housed in a 28-pin VQFN package and is qualified to AEC-Q100 standards for operation between -40°C and +125°C.
Feature Summary
- Integrates four independent power rails combining two high-current buck converters and two LDOs within a single compact package.
- Designed specifically for automotive applications with full qualification under the AEC-Q100 reliability standard.
- Supports wide input voltage ranges suitable for direct connection to vehicle battery systems without intermediate regulation.
Applications
- Power distribution units in automotive infotainment systems
- Telematics control modules requiring multiple regulated voltage domains
- Body control modules managing peripheral loads
Procurement Notes
Verify the specific suffix RHDTQ1 against the manufacturer's official datasheet to confirm pin compatibility and thermal characteristics. Ensure that the selected variant matches the required automotive grade and packaging specifications for your design implementation.
Selection Notes
Select this component when a design requires four distinct regulated outputs from a single footprint. It is appropriate for systems needing both high-current switching regulation and low-noise linear regulation simultaneously. Verify that the total power dissipation remains within the thermal limits of the VQFN-28 package.
Part Context
This part belongs to the LP8732 family of multi-output PMICs designed for automotive environments. The family includes variants with different current ratings and fixed output configurations. This specific model combines 2-A buck converters with 300-mA LDOs to provide a versatile power solution for complex electronic control units.
Replacement Considerations
LP873200RHDTQ1: Offers similar architecture but may differ in specific output current capabilities or fixed voltage options. LP873222RHDTQ1: Provides comparable functionality with potentially different internal regulator configurations. Always consult the official datasheets to verify electrical parameter equivalence before substitution.
