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Product Detailed Parameters
- Description：IC REG QUAD BUCK/LNR SYNC 24WQFN
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Topology：Step-Down (Buck) Synchronous (2), Linear (LDO) (2)
- Number of Outputs：4
- Frequency - Switching：2MHz
- Voltage/Current - Output 1：0.8V ~ 2V, 1.5A
- Voltage/Current - Output 2：1V ~ 3.3V, 1.5A
- Voltage/Current - Output 3：1V ~ 3.5V, 300mA
- w/LED Driver：No
- w/Supervisor：No
- w/Sequencer：No
- Voltage - Supply：2.8V ~ 5.5V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：24-WFQFN Exposed Pad
- Supplier Device Package：24-WQFN (4x4)
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The LM26480QSQ-AA/NOPB is a Texas Instruments PMIC featuring two 1.5A buck converters and two 300mA LDOs in a WQFN-24 package. Input voltage ranges from 1.74V to 5.5V, with adjustable outputs from 800mV to 3.5V. It operates between -40°C and +85°C, consuming 33µA quiescent current.
Feature Summary
- Integrates dual high-current synchronous buck DC-DC converters for efficient power delivery
- Includes dual low-dropout linear regulators for precise internal processor and I/O supply
- Features automatic soft-start and comprehensive protection against thermal and current overload
Applications
- Advanced application processors requiring multi-rail power sequencing
- Field-programmable gate arrays (FPGAs) with mixed voltage requirements
- Embedded systems utilizing complex digital logic architectures
Procurement Notes
Verify the specific suffix 'AA' against the manufacturer's official documentation to confirm exact electrical characteristics and pin configuration. Ensure the WQFN-24 package matches your PCB footprint design. Confirm that the operating temperature range meets your system's environmental specifications before finalizing procurement.
Selection Notes
Select this component when designing systems requiring integrated buck and LDO regulation within a compact surface-mount form factor. The device is suitable for applications needing simultaneous high-current switching and low-noise linear regulation. Evaluate the 2MHz switching frequency against electromagnetic interference constraints during the initial design phase.
Part Context
This part belongs to the LM26480 series of professional power management ICs designed for low-power digital applications. It consolidates multiple power stages into a single solution, reducing board space compared to discrete regulator implementations. The series targets modern processors and FPGAs demanding efficient, multi-voltage power distribution.
Replacement Considerations
Consult the manufacturer's cross-reference guide for verified substitutes. Alternative parts must match the WQFN-24 package and provide equivalent dual buck and dual LDO functionality. Verify compatibility with existing control signals and thermal dissipation requirements before substitution.
