The TL494 device incorporates all the functions required in the construction of a pulse-widthmodulation (PWM) control circuit on a single chip. Designed primarily for power-supply control, this device offers the flexibility to tailor the power-supply control circuitry to a specific application. The TL494 device contains two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC) comparator, a pulse-steering control flip-flop, a 5-V, 5%-precision regulator, and output-control circuits. The error amplifiers exhibit a common-mode voltage range from –0.3 V to VCC – 2 V. The dead-time control comparator has a fixed offset that provides approximately 5% dead time. The on-chip oscillator can be bypassed by terminating RT to the reference output and providing a sawtooth input to CT, or it can drive the common circuits in synchronous multiple-rail power supplies. The uncommitted output transistors provide either common-emitter or emitter-follower output capability. The TL494 device provides for push-pull or singleended output operation, which can be selected through the output-control function. The architecture of this device prohibits the possibility of either output being pulsed twice during push-pull operation. The TL494C device is characterized for operation from 0°C to 70°C. The TL494I device is characterized for operation from –40°C to 85°C.
Specifications
Input Voltage:
-
Output Voltage:
40V
Output Current:
200mA
Supply Voltage Min:
7V
Supply Voltage Max:
40V
Controller IC Case Style:
SOIC
No. of Pins:
16Pins
Frequency:
300kHz
Product Range:
-
Alternate Descriptions
Avnet America
Voltage Mode PWM Controller 40V 200mA 16-Pin SOIC Tube
Avnet Europe
Voltage Mode PWM Controller 40V 200mA 16-Pin SOIC Tube
