R5524N Series

USB High-side Power Switch for Automotive Applications


Data Sheet
Data Sheet

The R5524x is a CMOS-based high-side MOSFET switch IC which conforms to the universal serial bus (USB) standard. The device is suitable for protecting a USB power source.
By using an Nch MOSFET with low On-resistance (Typ. 100mΩ) as a switching transistor, the device can provide low dropout voltage.
Internally, the device consists of an overcurrent limiting circuit, a thermal shutdown circuit, an undervoltage lockout (UVLO) circuit and a reverse current protection circuit. The device also consists of an internal delay circuit to prevent the output of false flag signals caused by inrush current.
To achieve simplification of layout design, the overcurrent detection accuracy has been improved.
The R5524x is offered in a 5-pin SOT-23-5 package, which achieves the smallest possible footprint solution on boards where area is limited.


Input Voltage Range (Maximum Rating) 2.7V to 5.5V (6.0V)
N-channel MOS High-Side Switch IC
Switch ON Resistance Typ. 100mΩ at 5V Input
Current Limit Threshold Min. 650mA*1, Min. 1.25A*2
Overcurrent Limit Min. 550mA
Flag Delay Time Typ. 20ms.
Under-voltage Lockout (UVLO) Circuit
Thermal Shutdown Circuit
Reverse Current Protection Circuit
Package SOT-23-5
Operating Temperature Range −40°C to 85°C
  • *1only for R5524x001A/B, R5524x002A/B
  • *2only for R5524N004A


  • Car accessories including car audio equipment, car navigation system, and ETC system.

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Data Sheet Package Quality Assurance Data Suffix Composition & Content*1
R5524N Series SOT-23-5 Reliability -AE Sn (Sn: 100%)
  • *1The composition of the product cannot be specified.

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