The output transistors inside the chip having floating outputs are arranged to deliver either a common-emitter output or a emitter-follower output facility. This facility also allows driving many TL494 ICs synchronously having different power supply rails. The on chip oscillator function can be overridden by connecting the RT pin#14 of the IC with reference pin#14, and by externally providing a sawtooth signal to the CT pin#5. The dead time control comparator is set with a fixed offset value for delivering a constant 5% dead time approximately. The error amplifiers feature a common mode voltage range from - 0.3 V to VCC - 2V. The device comes with an in-built variable oscillator, a dead-time controller stage (DTC), a flip flop control for pulse-steering, a precision 5 V regulator, two error amps, and some output buffer circuits. The device is mainly created for power supply control circuits, which can be efficiently dimensioned using this IC. The IC TL494 is specifically designed for single chip pulse width modulation application circuits.
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