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Texas Instruments TL1451ACPWR — Analog & Data Acquisition

TL1451ACPWR PWM Controller, Buck/Boost/Flyback, 16-TSSOP

MPNTL1451ACPWR
End of Life

Texas Instruments TL1451ACPWR PWM controller, step-up/step-down/step-up/step-down function, buck/boost/flyback topology, 1 output phase, 2 outputs, transistor driver, 1 kHz to 500 kHz switching frequency, 3.6 V to 50 V supply, -20°C to 85°C, 16-TSSOP package, surface mount.

$2.02Ref. price · indicative, final on quote
Texas Instruments TL1451ACPWR datasheet (PDF)
Packaging16-TSSOP (0.173", 4.40mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TL1451ACPWR specifications
ParameterValue
Output typeTransistor Driver
MountingSurface Mount
Voltage - supply (Vcc (Vdd))3.6V ~ 50V
Frequency - switching1kHz ~ 500kHz
I/O channels2
Output phases1
Operating temperature-20°C ~ 85°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
FunctionStep-Up, Step-Down, Step-Up/Step-Down
TopologyBuck, Boost, Flyback
Clock syncNo
Case16-TSSOP (0.173\", 4.40mm Width)
Control featuresFrequency Control
Output configurationPositive
Synchronous rectifierNo

Product details

Multi-topology PWM controller for flexible power rail design

The Texas Instruments TL1451ACPWR is a PWM controller that handles step-up, step-down, and step-up/step-down conversion across buck, boost, and flyback topologies. It drives two external transistors (output type: transistor driver) from a single supply rail spanning 3.6 V to 50 V. The switching frequency is adjustable from 1 kHz to 500 kHz via an external RC network, giving you control over the inductor size versus ripple trade-off. No synchronous rectifier or clock sync on this part — it's a straightforward analog controller for non-isolated or isolated flyback designs where simplicity and wide input range matter more than efficiency at light load.

Frequently asked questions

What is the TL1451ACPWR equivalent or second source?

The UCC2806DWTR is a functional peer from TI with similar topology support (boost, flyback, forward converter) and two outputs, but it includes synchronous rectification and a narrower supply range (8 V typical). The LM5150QURUMRQ1 is an automotive-grade (AEC-Q100) single-output boost controller with clock sync and higher switching frequency (2.3 MHz). Neither is a drop-in replacement — verify pin compatibility and control features against your design.