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Texas Instruments TPS40190DRCR — Analog & Data Acquisition
Texas Instruments

TPS40190DRCR Buck Controller, 300kHz, 10-VSON

MPNTPS40190DRCR
End of Life

Texas Instruments TPS40190DRCR, step-down buck controller, 4.5V to 15V supply, 300kHz fixed switching frequency, 85% max duty cycle, synchronous rectifier, enable pin, single output, -40°C to 85°C, 10-VSON (3x3) exposed pad package.

$2.72Ref. price · indicative, final on quote
TPS40190DRCR datasheet
Packaging10-VFDFN Exposed Pad
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

TPS40190DRCR Technical Specifications
ParameterValue
Output typeTransistor Driver
Mounting typeSurface Mount
Voltage - supply (Vcc (Vdd))4.5V ~ 15V
Frequency300kHz
Number of outputs1
Output phases1
Duty cycle85%
Operating temperature-40°C ~ 85°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
FunctionStep-Down
TopologyBuck
Clock syncNo
Case10-VFDFN Exposed Pad
Control featuresEnable
Output configurationPositive
Synchronous rectifierYes

Product details

Enable pin and control features

The TPS40190DRCR includes a dedicated enable pin for on/off control, allowing the controller to be sequenced with other rails or shut down under fault conditions. The enable threshold is referenced to the Vcc supply; pulling the pin below the threshold disables the output. There is no clock synchronization input — the oscillator runs free at 300 kHz, so multiple TPS40190DRCRs on the same board will beat against each other unless the switching nodes are phase-shifted with external RC delays or the layout separates the power stages.

Sourcing and lifecycle

The TPS40190DRCR is listed as Active with ROHS3 compliance.

Frequently asked questions

Does TPS40190DRCR have an enable pin?

Yes, the TPS40190DRCR includes an enable pin for on/off control. The enable threshold is referenced to Vcc; pulling the pin low disables the output.

What is the typical application circuit for TPS40190DRCR?

The TPS40190DRCR is a voltage-mode buck controller driving external N-channel MOSFETs in a synchronous rectifier topology. A typical circuit includes an input capacitor, the controller with its compensation network, a pair of MOSFETs, an output inductor, and output capacitors. The 300 kHz fixed switching frequency sets the LC filter values.

What is the closest functional second-source for TPS40190DRCR?

The UCC2806DWTR is a different part — it is a current-mode controller for boost, flyback, and forward topologies with two outputs and a 50% duty cycle limit. It is not a pin-compatible or functional replacement for the TPS40190DRCR buck controller. No direct second-source alternate is listed in the record for the TPS40190DRCR.