21V 15μA AC/DC转换器
功能特点
产品名称: 21V 15μA AC/DC转换器
产品型号: SE3252
产品描述:
The SE3252 series switcher ICs cost effectively replace all power supplies up to 5W output power based on unregulated isolated linear transformer (50/60HZ). Unlike conventional PWM (pulse width modulation) controllers, they regulate the output voltage in a new method of off-time modulation control. The controller consists of a VCO (voltage control oscillator), Sense and logic circuit, VDD pin, under-voltage lockout circuit, protection for over-voltage, current limited circuit, leading edge blanking, over load protection and fault condition auto-restart. They are ideal low power AC/DC adapter/charger solution for portable devices.
产品特征:
Low start-up current: Typ.15 μA Max.25 μA
UVLO(under voltage lockout):Typ.12V start-up Typ.6V shut-down
Low operating current:Typ.2 mA Max.5 mA
LEB(leading edge blanking): Typ.300ns
OVP(over voltage protection): Typ.28 V
Operation Frequency: Typ.54KHZ(VDD=21V)
Output Driver Ability: Typ.15 mA
OLP(over load protection)
Universal AC input range
Constant voltage and constant current
Small SOT-23-6 Package
产品应用:
AC/DC adapter/charger for cell/cordless phones, digital cameras, MP3/portable audio devices etc
LED Lighting
Replacements for linear transformers and RCC SMTPS
封装:SOT23-6
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