Skip to main content
Log in
Texas Instruments TPS40345DRCT — Analog & Data Acquisition

TPS40345DRCT Buck Controller, 600kHz, 3V-20V, Active

MPNTPS40345DRCT
End of Life

Texas Instruments TPS40345DRCT, synchronous buck PWM controller, 600 kHz switching frequency, 3 V to 20 V supply, single output, positive configuration, 10-VFDFN exposed pad (10-VSON 3x3), -20°C to 85°C operating temperature.

$2.72Ref. price · indicative, final on quote
Texas Instruments TPS40345DRCT datasheet (PDF)
Packaging10-VFDFN Exposed Pad
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TPS40345DRCT specifications
ParameterValue
Output typePWM
MountingSurface Mount
Voltage - supply (Vcc (Vdd))3V ~ 20V
Frequency - switching600kHz
I/O channels1
Output phases1
Duty cycle90%
Operating temperature-20°C ~ 85°C
PackageTape & Reel (TR); Cut Tape (CT)
FunctionStep-Down
TopologyBuck
Clock syncNo
Case10-VFDFN Exposed Pad
Control featuresEnable, Power Good, Soft Start
Output configurationPositive
Synchronous rectifierYes

Product details

The TPS40345DRCT is a synchronous step-down (buck) PWM controller from Texas Instruments, switching at 600 kHz. It takes a 3 V to 20 V input rail and drives a single positive output with up to 90% duty cycle. The controller integrates an enable pin, power-good indicator, and soft-start — the three control signals you actually wire up on a board. The synchronous rectifier means you skip the external Schottky catch diode, saving a component and a bit of board space.

For the BOM line, that means no forced redesign for obsolescence in the foreseeable future.

Frequently asked questions

Does TPS40345DRCT have an enable pin?

Yes. The control features include Enable, Power Good, and Soft Start — the three signals you typically need to sequence and monitor the rail.