The R5524N series is CMOS-based high-side MOSFET switch ICs for Universal Serial Bus (USB) applications. Using Nch FET as a switching transistor, low ON resistance (Typ.100mΩ) and reverse current protection is possible. An Over-current limit circuit, a thermal shutdown circuit, and an under voltage lockout circuit (UVLO) 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. In order to support easy power-line design, the over-current level is highly accurate. The R5524N 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.
The Ricoh R5524N series consists of CMOS-based high-side MOSFET switch ICs designed for Universal Serial Bus (USB) applications. These devices utilize an N-channel FET as a switching transistor, offering low ON resistance and built-in protection circuits including over-current limit, thermal shutdown, and under-voltage lockout (UVLO). The series is available in a small SOT-23-5 package, making it suitable for high-density mounting on boards.
| Package | SOT-23-5 |
|---|---|
| Switch ON Resistance (Typ.) | 100 mΩ |
| Operating Temperature | -40 to 85 °C |
| Storage Temperature | -55 to 125 °C |
| Current Limit Threshold (Min.) | 650 mA |
| Current Limit Threshold (Min.) | 1.25 A |
| Reverse Leakage Current (Max.) | 50 µA |
The typical ON resistance is 100 mΩ at 5V input.
Applications include PCs, digital televisions, set-top boxes, printers, PDAs, and game consoles.
Yes, it includes a built-in thermal shutdown circuit that activates if the junction temperature exceeds 135°C.