Hynetek HUSB304
The HUSB304 is a USB port controller, which integrates common functions for a USB type-A port. It is designed for a 5V USB typeA port application, which requires a high current switch. The programmable current limit provides an easy way to fine-tune the current limit through an external resistor.FEATURES
Integrated 15mOhm Load Switch Programmable Current Limit Low Load Current Sensing Automatic DPDM Detection● Divider 3
● USB DCP Applying 1.2V
● BC 1.2 DCP
● Chinese Telecommunication Industry Standard YD/T 1591-2009 Status Indication Over Voltage and Over Current Protection Low Operation Current ±8kV HBM ESD Rating for USB IO pins
APPLICATIONS
USB Type-A Adaptor USB Type-A Port Controller with Power Switch HUSB304GENERAL DESCRIPTION
There is an ultra-low Rdson (15mΩ) N-channel MOSFET integrated. The can detect its load current and change its status output to notify that there is a load applied at the current USB type-A port. The output voltage and output current are both monitored by the HUSB304 so that it can performs an OVP, OCP, OTP. The HUSB304 has Divider 3, USB DCP applying 1.2V, BC 1.2 DCP and Chinese Telecommunication Industry Standard YD/T 1591-2009 protocols inside. It can automatically detect the attached devices and switch to the proper charging protocol. Only 100uA operation current is required for the HUSB304 to save the standby power loss of whole system.