MAP8800 is a power factor correction (PFC) controller that has been optimized for
use in LCD TVs, but is also well suited for general power supply and lighting applications. Operating in voltage-
mode critical conduction mode (CRM), this PFC controller does not require the input-voltage sense line (see Figs
1 and 2.) Housed in an 8-pin SOP, the MAP8800 integrates numerous protection features.
The controller provides features such as a maximum-frequency limiting function to prevent damage to the TV
power supply and diode short protection, which protects the TV when a boost diode is shorted. Additionally, the
MAP8800 provides overvoltage and overcurrent protection as well as feedback protection when the feedback
loop is shorted