R5523N Series

USB High-side Power Switch for Automotive Applications


Data Sheet
Data Sheet

The R5523N Series is CMOS-based high-side MOSFET switch IC for Universal Serial Bus (USB) applications. Low ON Resistance (Typ.130mΩ) and low supply current (Typ.20µA at active mode) are realized in this IC.
An over-current limit circuit, a thermal shutdown circuit, and an under voltage lockout (UVLO) circuit are built-in as protection circuits. Further, a delay circuit for flag signal after detecting over-current, is embedded to prevent miss-operation of error flag because of inrush current. The R5523N Series is ideal for applications of protection for USB power supply. Since the package is small SOT-23-5, high density mounting on board is possible.


Input Voltage Range (Maximum Rating) 2.2V to 5.5V (6.5V)
Built-in P-channel MOSFET Switch
Supply Current Typ. 20µA (at Active Mode)
Switch ON Resistance Typ. 130mΩ
Output Current Min. 500mA
Flag Delay Time Typ. 10ms.
Package SOT-23-5
Over- Current Limit / Short Circuit Protection
Built-in Under Voltage Lockout (UVLO) Function
Built-in Thermal Shutdown Protection
Built-in Soft-start Function
Operating Temperature Range −40°C to 85°C


  • Car accessories including car audio equipment, car navigation system, and ETC system.
  • Control units including EV inverter and charge control.

Documents Download

Data Sheet Package Quality Assurance Data Suffix Composition & Content*1
R5523N Series SOT-23-5 Contact us*2 -HE Sn (Sn: 100%)
  • *1The composition of the product cannot be specified.
  • *2The reliability information is not listed for devices above rank2. Please contact Ricoh sales representatives for further informations.

  • Buy Products / Order Sample


Ricoh semiconductor products are available at those dealers.

Page Top