BL2555

BL2555 1CH ADJ Current-Limited Power Distribution Switch Features Single-Channel Power Distribution Switch Programmable Current Limit in 0.4A~2A Output Current Enable polarity: Active High 2.4V to 5.5V Supply Range Under-Voltage Lockout -40°C to +85°C Ambient Temperature Range Accurate Current Limit 15µA Quiescent Current 80mΩ MOSFET Thermal-Shutdown Protection Built-In Soft Start Reverse Current Blocking (No Body Diode) Available in SOT23-5 Package Applications Set-Top Boxes Wi-Fi Router/AP USB 3G Datacard/ USB Dongle ONT Boxes USB Ports and Hubs, Laptops, and Desktops Smartphone and PDA MiniPCI Accessories General Description The BL2555 Power Distribution Switch features internal current limiting to prevent damage to host devices due to faulty load conditions. The BL2555 develops ultra-low on-resistance switch with programmable current limiting to protect the power source from over current and short circuit conditions. It integrates the over temperature protection and discharges the output capacitor during the shutdown. In case the output is pulled higher than the input voltage under the shutdown, the BL2555 can block the current flowing from the output to the input. The BL2555 is available in SOT23-5 package. Typical Application Circuit VIN VOUT IN OUT CIN ON/ OFF EN SET GND RSET COUT Basic Application Circuit www.belling.com.cn 1 V1.0 BL2555 1CH ADJ Current-Limited Power Distribution Switch Pin Description Pi...