NXP | TEA1721BT/N1,118

The TEA1721BT/N1,118 is a low cost switched mode power supply (SMPS)controller IC for low power applications (up to 5 W), operates directly from the rectified universal mains input.

It includes a high voltage power switch (700 V) and optimized for a flyback converter topologies to provide high-efficiency over the entire load range with ultra-low power consumption in the no-load condition.

Features:

• Low power SMPS controller with integrated power switch
• 700 V high voltage power switch
• Primary sensing for control the output voltage without optocoupler and secondary feedback circuitry
• Minimizes audible noise in all operation modes
• USB battery charging and Energy Star 2.0 compliant
• Jitter function for reduced EMI
• Enables no-load power consumption < 20 mW
• Very low supply current in no-load condition with energy saver mode
• Incorporates a high voltage start-up circuit with zero current consumption undernormal switching operation
• Available in halogen-free and Restriction of Hazardous Substances (RoHS) SO7 package
• OverVoltage Protection (OVP) on Feedback control (FB) pin with auto-restart
• UnderVoltage LockOut (UVLO) protection on IC supply pin
• OverTemperature Protection (OTP)
• Soft-start by reduced peak current for zero and low output voltage
• Demagnetization protection for guaranteed discontinuous conduction mode operation
• Open and short-circuit protection of the Feedback control (FB) pin
• Short-circuit protection of the charger output

Applications:

• Battery chargers for cellular phones
• Standby supply for TV and desktop PC
• Power supply for white goods applications