STK73903

The STK73903 incorporates on-chip all the power swiching,amplifier,overcurrent protection and driver circuits required in a self-excitation type feed back control off-line switching regulator.

Features of the STK73903 are:(1)power MOSFET devices; (2)feedback control for high output voltage precision; (3)driver circuit on-chip; (4)overcurrent protection circuit on-chip; (5)pin compatible with all other devices in the same series of devices with 110 to 280W power ratings; (6)higher oscillator frequency allows the use of smaller pulse transformers; (7)IMST substrate acts as an electromagnetic shield,making low-noise designs possible.

The absolute maximum ratings of the STK73903 can be summarized as:(1)operating substrate temperature:115; (2)AC input voltage:140V; (3)operating temperature:-10 to 85; (4)storage temperature:-30 to 115; (5)maximum output power:180W.If you want to know more information such as the electrical characteristics about the BF904, please download the datasheet in www.seekic.com or www.chinaicmart.com.