Hi2008 is an off-line switching power supply chip, which is different from Hi2008 solution of the PWM controller and the external discrete power MOS. The Hi2008 is integrated with the PWM controller, the 700V switch tube and the primary peak current detection circuit, and the internal self power supply technology which can omit the auxiliary power supply windings is adopted, so the outside is greatly simplified. Hi2008 application circuit reduces the number of original parts, Hi2008 size and weight of the circuit, and is especially suitable for cost sensitive flyback switching power supply.
Hi2008 Features ：
Input voltage 85V to 265V full voltage range
Input voltage 160V to 265V full voltage range OUTPUT:22W MAX : -20℃ - +85 ℃
Built-in 700V power pipe
• built in self powered circuit without auxiliary winding power supply.
• current mode PWM control
VCC working voltage range 4V to 6V
Automatic jump cycle mode for light load
Over temperature, overflow, overvoltage, overload protection
• standby power < 0.15W
Hi2008: Output power decreases as the temperature increases
Hi2007 18W; Hi2008 20W; Hi2009 24W; Hi2025 25W.