LTA803N Datasheet | NXP Semiconductors

description The TEA1753T is the third generation of green Switched Mode Power Supply (SMPS) controller ICs. The TEA1753T bines a controller for Power Factor Correction (PFC) and a flyback controller. Its high level of integration allows the design of a cost-effective power supply with a very low number of external ponents. The special built-in green functions provide high efficiency at all power levels. This efficiency applies to quasi-resonant operation at high-power levels, quasi-resonant operation with valley skipping, as well as reduced frequency operation at lower power levels. At low-power levels, the PFC switches off to maintain high efficiency. During low-power conditions, the flyback controller switches to frequency reduction mode and limits the peak current to an adjustable minimum value. This mode ensures high efficiency at low-power and good standby power performance while minimizing audible noise from the transformer. The controller is switched to the power-down mode for no-load operation. In this mode, the controller is shut down for very low standby power applications. The TEA1753T is a Multi-Chip Module, (MCM), containing two chips. The proprietary high-voltage BCD800 process which makes direct start-up possible from the rectified universal mains voltage in an effective and green way. The second low voltage Silicon On Insulator (SOI) is used for accurate, high-speed protection functions and control. The TEA1753T enables the design of highly efficient and reliable supplies with power requirements of up to 250 W using the minimum number of external ponents. Remark: All values provided throughout this data sheet are typical values unless otherwise stated. NXP Semiconductors TEA1753T HV start-up flyback controller with integrated PFC controller 2. Features and benefits 2.1 Distinctive features - Integrated PFC and flyback controller - Universal mains supply operation (70 V (AC) to 276 V (AC)) - Dual-boost PFC with accurate maximum output voltage...