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Texas Instruments TL494IDR — Power Management (PMIC / Gate Driver)

TL494IDR PWM Controller – Texas Instruments, 16-SOIC, Active

MPNTL494IDR
Active

Texas Instruments TL494IDR, PWM controller IC, multi-topology support (buck, boost, flyback, forward, half/full-bridge, push-pull), 1kHz~300kHz switching, 7V~40V supply, 45% max duty cycle per output, 2 transistor-driver outputs, 16-SOIC package, industrial temp -40°C~85°C.

$0.5100Ref. price · indicative, final on quote
Texas Instruments TL494IDR datasheet (PDF)
Packaging16-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TL494IDR specifications
ParameterValue
Output typeTransistor Driver
MountingSurface Mount
Voltage - supply (Vcc (Vdd))7V ~ 40V
Frequency - switching1kHz ~ 300kHz
I/O channels2
Output phases1
Duty cycle45%
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
FunctionStep-Up, Step-Down, Step-Up/Step-Down
TopologyBuck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull
Clock syncNo
Case16-SOIC (0.154\", 3.90mm Width)
Control featuresDead Time Control, Frequency Control
Output configurationPositive
Synchronous rectifierNo

Product details

PWM controller for isolated and non-isolated topologies

The TL494IDR is a fixed-frequency PWM controller that drives two external power transistors in a push-pull, half-bridge, full-bridge, forward, flyback, boost, or buck configuration. Its switching frequency is set by an external resistor and capacitor from 1kHz to 300kHz, letting you choose magnetics for size or efficiency. Each output delivers a 45% max duty cycle. The dead-time control pin lets you insert a guaranteed off-time to prevent transformer saturation during the reset interval.

Active production — 16-SOIC package

The 16-SOIC (0.154-inch width) package is a common footprint that mates with standard SOIC-16 land patterns.

Frequently asked questions

Can the TL494IDR be used for a buck converter?

Yes, the TL494IDR supports buck topology as one of its listed topologies. Configure the error amplifier and dead-time control per the standard buck compensation; the 45% max duty cycle per output is sufficient for most step-down ratios at the chosen switching frequency.

What is the closest functional second-source to the TL494IDR?

The UCC2806DWTR from TI is a comparable dual-output PWM controller with a 50% max duty cycle and similar topology support (boost, flyback, forward). It adds synchronous rectifier capability and a current-limit function, but lacks the TL494's dead-time control and has a lower switching frequency ceiling (47kHz typ). Confirm your specific topology and frequency before substituting.