南芯-SC8723 QFN 同步升降压变换器 科瑞芯现货

　　Descriptions

　　SC8723 is a synchronous 4-switch buck-boost converter with four integrated switches. It provides excellent power efficiency and voltage regulation no matter the output voltage is higher, lower or equal to the input voltage. SC8723 supports very wide input and output voltage range. It can support applications from 2.7V to 24V input range and 3V to 24V output range and provides up to 3.5A output current.

　　SC8723 employs average current-mode control. The output voltage is adjusted by FB pin with resistors. The switching mode (PSM /FPWM) and the switching frequency can be adjusted by external setting. The device also provides programmable output current limit which supports flexible design for different applications.

　　SC8723 supports internal current limit, input under voltage protection, output over voltage protection, output short protection, FB short circuit protection and over temperature protection to ensure safety under different abnormal conditions.

　　The IC is in a 22 pin 3x3 QFN package

　　Features

　　High Efficiency Buck-Boost Conversion

　　Few External Components

　　Integrated Low RDS(ON) Switches

　　Wide VIN Range: 2.7 V to 24 V

　　Wide VOUT Range:3V to 24V

　　Fixed 5.1V VOUT with FB tied to GND

　　Up to 3.5A Output Current

　　250K/500K/750K/1MHz Adjustable Switching Frequency

　　Adjustable Output Current Limit

　　Forced PWM Mode/ PSM Mode Selectable

　　EN control and Programmable UVLO

　　Internal Soft Start

　　Absolute Input and Output Over Voltage Protection

　　Output Short Protection with Hiccup Mode

　　Thermal Shutdown Protection

　　Under Voltage Protection

　　Over Voltage Protection

　　QFN-22 FC 3 x 3 Package

　　Applications

　　USB Type C Hub

　　Power Bank with Quick Charge

　　Wireless Charger

　　Wall Adapter

　　Industry Power Supplies