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Product Detailed Parameters
- Description：IC REG DL BUCK/LNR SYNC 24VQFN
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Bulk
- Topology：Step-Down (Buck) Synchronous (1), Linear (LDO) (1)
- Number of Outputs：2
- Frequency - Switching：300kHz ~ 2MHz
- Voltage/Current - Output 1：0.8V ~ 3.6V, 3A
- Voltage/Current - Output 2：0.8V ~ 3.6V, 3A
- Voltage/Current - Output 3：-
- w/LED Driver：No
- w/Supervisor：No
- w/Sequencer：No
- Voltage - Supply：2.95V ~ 6V
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：24-VFQFN Exposed Pad
- Supplier Device Package：24-VQFN (5.5x3.5)
- Grade：-
- Qualification：-
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Overview
The TPS54122RHLR is a dual-output power management integrated circuit manufactured by Texas Instruments. It integrates one synchronous buck converter and one low-dropout linear regulator (LDO) within a single package. The switching regulator supports an input voltage range of 2.95V to 6V, delivering up to 3A output current with adjustable voltage from 0.8V to 3.6V. The LDO channel provides an additional 3A at voltages between 0.8V and 3.6V. The device operates with a programmable switching frequency ranging from 300kHz to 2MHz. It is housed in a 24-pin VQFN package measuring 5.5mm x 3.5mm and functions across a temperature range of -40°C to 125°C.
Feature Summary
- Integrates a high-efficiency synchronous step-down converter and a low-noise LDO for combined power delivery.
- Features a wide operating input voltage range suitable for single-cell lithium-ion battery applications.
- Includes internal soft-start and comprehensive protection mechanisms against overcurrent and thermal overload.
Applications
- Portable electronics requiring efficient multi-rail power distribution
- Battery-powered devices utilizing single-cell lithium-ion sources
- Embedded systems needing simultaneous switching and linear regulation
Procurement Notes
Verify the specific suffix 'RHLR' against the manufacturer's official datasheet to confirm tape-and-reel packaging and exact pin configuration. Ensure compatibility with the required PCB footprint for the 24-VQFN package. Cross-reference the component marking code to distinguish it from similar variants like the TPS54122RGYT or TPS54122RHLT. Confirm RoHS compliance status through the latest production change notices.
Selection Notes
Select this component when a design requires both high-current switching efficiency and low-noise linear regulation from a single compact package. It is appropriate for systems powered by 3.7V nominal batteries where space constraints limit the use of separate regulators. Consider the thermal performance of the exposed pad in the VQFN package during layout planning.
Part Context
This part belongs to the TPS5412x family of dual-output PMICs from Texas Instruments. These devices are designed to simplify power architectures by combining different regulation topologies. The RHLR variant specifically denotes the reel packaging format used for automated surface-mount assembly processes.
Replacement Considerations
The TPS54122RGYT is a functional equivalent within the same family but utilizes a different package type. Verify that the pinout and thermal characteristics of the alternative package meet the existing board layout requirements before substitution.
