NXP TEA1721

Description

The TEA1721 is a small and low cost module Switched Mode Power Supply (SMPS) controller IC for low power applications (up to 5 W) and operates directly from the rectified universal mains input. The device includes a high voltage power switch (700 V) and has been optimized for flyback converter topologies to provide high-efficiency over the entire load range with ultra-low power consumption in the no-load condition. It provides a circuit for start-up directly from the rectified mains voltage without any external bleeder circuits. The Burst mode frequency of 1750 Hz enables no-load power consumption below < 30 mW at high mains input.

Features

Remark: BOM & Schematic is added

Low power SMPS controller for applications up to 5 W700 V high voltage power switch for global mains operationPrimary sensing 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 < 30 mWVery low supply current in no-load condition with energy saver modeHigh voltage start-up circuit with zero current consumption during switchingAvailable in halogen-free and (RoHS) SO7 packageOverVoltage Protection (OVP) on supply pin and on (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Open and short-circuit protection of the Feedback control (FB) pin

Typical applications

• White goods / Mobile USB chargers / General-purpose adapters
• Industrial / Smart meters

More information

• IC product information