GENERAL DESCRIPTION
The GreenChip TEA1504 is intended for off-line 90 to 276 V (AC) power supply applications. It is one of a family of high voltage ICs integrating both analog and digital circuit functions for controlling a switched mode power supply (SMPS). Its functions include integrated high voltage start-up current source, voltage Pulse Width Mode (PWM) control, 5% accurate oscillator, band-gap derived reference voltages, comprehensive fault protection and leading edge blanking. Its high level of integration allows power supplies to be cost effective, compact, lightweight, highly efficient, more reliable, and simple to design.

FEATURES
Distinctive features
• High level of integration reduces the number of components by up to 50 compared to power supply using discrete components
• On/off functional switch replaces expensive mains switch
• Direct off-line operation (90 to 276 V AC)
• 5% accurate on-chip oscillator.

Green features
• Low power consumption in off-mode (<100 mW)
• Fast and efficient on-chip start-up current source
• Burst mode standby (<2 W) for overall improved system efficiency
• Low power operation mode with lower frequency reduces switching losses
• Low Overcurrent Protection (OCP) level.

Protection features
• Demagnetization protection
• Cycle-by-cycle current limitation with programmable current trip level
• Overvoltage protection
• Overtemperature protection
• Safe-restart mode with reduced power for system fault conditions.

Highly versatile
• Usable in buck and flyback topology
• Interfaces both primary and secondary side feedback.