Skip to main content
Log in
Texas Instruments TL494ING4 — Power Management (PMIC / Gate Driver)

TL494ING4 PWM Controller, 7V-40V, 1kHz-300kHz, 16-PDIP

MPNTL494ING4
End of Life

Texas Instruments TL494ING4 PWM controller, 7V-40V supply, 1kHz-300kHz switching, 45% max duty cycle per output, 2 outputs, transistor driver, 16-PDIP through-hole package, -40°C to 85°C operating temperature.

Texas Instruments TL494ING4 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TL494ING4 specifications
ParameterValue
Output typeTransistor Driver
MountingThrough Hole
Voltage - supply (Vcc (Vdd))7V ~ 40V
Frequency - switching1kHz ~ 300kHz
I/O channels2
Output phases1
Duty cycle45%
Operating temperature-40°C~85°C(TA)
PackageTube
FunctionStep-Up, Step-Down, Step-Up/Step-Down
TopologyBuck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull
Clock syncNo
Case16-DIP (0.300\", 7.62mm)
Control featuresDead Time Control, Frequency Control
Output configurationPositive
Synchronous rectifierNo

Product details

PWM controller with wide supply range and multiple topologies

The Texas Instruments TL494ING4 is a fixed-frequency PWM controller designed for a broad range of switching power supply topologies including buck, boost, flyback, forward converter, full-bridge, half-bridge, and push-pull configurations. It operates from a 7V to 40V supply and delivers a transistor-driver output with a maximum duty cycle of 45% per output, making it suitable for push-pull and bridge-based designs where dead-time control is critical. The switching frequency spans 1 kHz to 300 kHz, covering the majority of offline and DC-DC converter applications while allowing compact magnetics at the upper end.

Industrial temperature grade and through-hole package

Housed in a 16-pin PDIP (0.300-inch, 7.62 mm body) through-hole package, it is compatible with standard prototyping boards and legacy through-hole assembly lines, and the 0.100-inch pin pitch simplifies manual rework and inspection.

Frequently asked questions

What is the TL494ING4's listed function and topology support?

The TL494ING4 is a PWM controller supporting step-up, step-down, and step-up/step-down functions. It can be configured in buck, boost, flyback, forward converter, full-bridge, half-bridge, and push-pull topologies.

What is the closest pin-compatible alternative to the TL494ING4?

The TL494 family includes multiple temperature and package variants. The TL494ING4 is the industrial-temperature, through-hole PDIP version. Pin-compatible siblings in the same family share the same base pinout but differ in temperature grade or package; confirm the specific variant against your BOM requirements.