ET82097X数据手册ETEK中文资料规格书

描述 Description

The ET82097x offers different fixed output voltage versions. Hysteric control topology has been employed to obtain maximal efficiency at minimal quiescent current. ET82097x can achieve up to 80% efficiency at 100µA load. It can also support up to 300mA output current from 3.3V to 5V conversion, and achieve up to 93% at 200mA load. The ET82097x supplies both Down Mode and Pass-Through operations for different applications. In Down Mode, the output voltage can still be regulated at target value even when input voltage is higher than output voltage. In Pass-Through Mode, the output voltage follows input voltage. The ET82097x exits Down Mode and enters into Pass-Through Mode when VIN>VOUT+0.35V. The ET82097x supports true shutdown function when it is disabled, which disconnects the load from the input supply to reduce the current consumption. The ET82097x available in SOT23-5 Package.

特性 Features

• 250nA Ultra-Low IQ into VIN Pin

• 3.5uA IQ into VOUT Pin

• Operating Input Voltage from 0.7V to 5.5V

• Fixed Output Voltage Versions 2.5V 3.0V 3.3V 3.6V 4.5V 5.0V

• Minimum 0.8A Switch Peak Current Limit

• Regulated Output Voltage in Down Mode

• True Disconnection During Shutdown

• Up to 80% Efficiency at 100µA Load with 3.8V VIN and 5V Output

• Up to 93% Efficiency

• SOT23-5 package

应用 Application

• LCD Bias
• Optical Heart Rate Monitor LED Bias
• Portable and Wearable Applications
• Low Power Wireless Applications
• Battery Powered Systems