DESCRIPTION
The NE/SE5560 is a control circuit for use in switched-mode power supplies. This single monolithic chip incorporates all the control and housekeeping (protection) functions required in switched-mode power supplies, including an internal temperature-compensated reference source, internal Zener references, sawtooth generator, pulse-width modulator, output stage and various protection circuits.

FEATURES
• Stabilized power supply
• Temperature-compensated reference source
• Sawtooth generator
• Pulse-width modulator
• Remote on/off switching
• Current limiting
• Low supply voltage protection
• Loop fault protection
• Demagnetization/overvoltage protection
• Maximum duty cycle clamp
• Feed-forward control
• External synchronization