TEA1721BT数据手册恩XP中文资料规格书

描述 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 905 Hz enables no-load power consumption below < 20 mW at high mains input.

特性 Features

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 < 20 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

应用 Application

白色家电
工业
智能电表
移动USB充电器
通用适配器