UCC2818AD

The UCC2818AD is designed as BiCMOS power factor preregulator which provides all the functions necessary for active power factor corrected preregulators. The controller achieves near unity power factor by shaping the ac input line current waveform to correspond to that of the ac input line voltage. Average current mode control maintains stable, low distortion sinusoidal line current.

UCC2818AD has twelve features. (1) Controls boost preregulator to near-unity power factor. (2) Limits line distortion. (3) World wide line operation. (4) Over-voltage protection. (5) Accurate power limiting. (6) Average current mode control. (7) Improved noise immunity. (8) Improved feed-forward line regulation. (9) Leading edge modulation. (10) 150-A typical start-up current. (11) Low-power BiCMOS operation. (12) 12V to 17V operation. That are all the main features.

Some absolute maximum ratings of UCC2818AD have been concluded into several points as follow. (1) Its supply voltage would be 18V. (2) Its supply current would be 20mA. (3) Its gate drive current, continuous would be 0.2A. (4) Its gate drive current would be 1.2A. (5) Its input voltage, CAI, MOUT, SS would be 8V. (5) Its input voltage, PKLMT would be 5V. (6) Its input voltage, VSENSE, OVP/EN is 10V. (7) Its input current, RT, IAC, PKLMT would be 10mA. (8) Its input current, VCC (no switching) is 20mA. (9) Its maximum negative voltage, DRVOUT, PKLMT, MOUT would be -0.5V. (10) Its power dissipation would be 1W. (11) Its junction temperature would be from -55°C to 150°C. (12) Its storage temperature would be from -65°C to 150°C. (13) Its lead temperature, Tsol (soldering, 10 seconds) would be 300°C. (14) Its power dissipation would be 1W. It should be noted that stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. And so on. If you have any question or suggestion or want to know more information please contact us for details. Thank you!