R5523N Datasheet, PDF (1/12 Pages) RICOH electronics devices division – USB HIGH-SIDE POWER SWITCH

R5523N_E/2006/05/12
R5523N SERIES
USB HIGH-SIDE POWER SWITCH
DESCRIPTION
The R5523N 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 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 is ideal for applications of
protection for USB power supply. Since the package is small SOT23-5, high density mounting on board is
possible.
FEATURES
• Built-in 130 mΩ (Typ.) P-channel MOSFET Switch
• Low Supply Current Typ. 20µA (at Active Mode)
• Output Current Min. 500mA/ Min. 250mA 2 types are available.
• Flag Delay Time Typ. 10ms.
• Over- Current Limit / Short Circuit Protection
• Under Voltage Lockout
• Thermal Shutdown Protection
• Soft-start Function
• SOT23-5 pin Package
APPLICATIONS
• USB Peripherals
• Notebook PCs
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