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Texas Instruments TPS65300QRHFRQ1 — Power Management (PMIC / Gate Driver)

TPS65300QRHFRQ1 Automotive PMIC, 1 Buck + 3 LDOs, 5.6V-40V

MPNTPS65300QRHFRQ1
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Texas Instruments TPS65300QRHFRQ1 automotive PMIC, AEC-Q100 qualified, 1 buck converter + 3 LDOs, 5.6V to 40V input, 4 outputs, 2MHz to 3MHz switching, -40°C to 125°C, 24-VQFN (5x4).

$3.0720Ref. price · indicative, final on quote
Texas Instruments TPS65300QRHFRQ1 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TPS65300QRHFRQ1 specifications
ParameterValue
SeriesAutomotive, AEC-Q100
MountingSurface Mount
Supply voltage5.6V ~ 40V
Voltage/Current - output 15.3V, 1.2A
Voltage/Current - output 25V, 350mA
Voltage/Current - output 33.3V, 350mA
Frequency - switching2MHz ~ 3MHz
I/O channels4
Operating temperature-40°C~125°C
PackageTape & Reel (TR); Cut Tape (CT)
TopologyStep-Down (Buck) (1), Linear (LDO) (3)
W (Sequencer)No
W (LED driver)No
W (Supervisor)Yes
Case24-VFQFN Exposed Pad

Product details

Automotive PMIC with one buck and three LDOs

The Texas Instruments TPS65300QRHFRQ1 is an automotive-grade power management IC that integrates one step-down (buck) converter and three low-dropout (LDO) linear regulators in a single 24-VFQFN exposed-pad package. The buck converter delivers 5.3V at 1.2A, while the three LDOs provide 5V, 3.3V, and 3.3V at 350mA each, making it a complete power tree for an automotive ECU or sensor module that needs a pre-regulated bus plus clean analog rails.

Input voltage range and 24V system fit

The supply range spans 5.6V to 40V, which covers both nominal 12V and 24V automotive systems, including load-dump transients up to 40V. The 2MHz to 3MHz switching frequency keeps the buck inductor small, helping the layout fit tight ECU footprints.

Integrated supervisor saves a watchdog IC

Note that the part does not include a sequencer — power-up sequencing must be handled externally or by the system MCU.

Frequently asked questions

Does TPS65300QRHFRQ1 have a built-in supervisor and sequencer?

It includes a supervisor (reset and watchdog), but does not include a sequencer. Power-up sequencing must be managed externally or by the system controller.