| TYPE | DESCRIPTION |
|---|
| Mounting Style | Surface Mount |
| Frequency | 250 kHz |
| Number of Pins | 16 Pin |
| Supply Voltage (DC) | 12.0V (min) |
| Case/Package | SOIC-16 |
| Switching Frequency | 6kHz ~ 220kHz |
| Duty Cycle | 95 % |
| Maximum Duty Cycle | 99 % |
| Operating Temperature (Max) | 70 ℃ |
| Operating Temperature (Min) | 0 ℃ |
| Supply Voltage | 12V ~ 17V |
| Supply Voltage (Max) | 17 V |
| Supply Voltage (Min) | 12 V |
| TYPE | DESCRIPTION |
|---|
| Product Lifecycle Status | Active |
| Packaging | Tape & Reel (TR) |
| Size-Length | 9.9 mm |
| Size-Width | 3.91 mm |
| Size-Height | 1.58 mm |
| Operating Temperature | 0℃ ~ 70℃ |
DESCRIPTION
●The UCC3817A and the UCC3818A family 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.
●FEATURES
●Controls Boost Preregulator to Near-Unity Power Factor
●Limits Line Distortion
●World Wide Line Operation
●Over-Voltage Protection
●Accurate Power Limiting
●Average Current Mode Control
●Improved Noise Immunity
●Improved Feed-Forward Line Regulation
●Leading Edge Modulation
●150-µA Typical Start-Up Current
●Low-Power BiCMOS Operation
●12-V to 17-V Operation
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