RICOH R5524N series Owner's Manual and User Guide
Summary
The R5524N series is a compact, CMOS-based high-side MOSFET switch IC engineered for reliable USB power supply systems. Featuring built-in protection against over-current, thermal events, and undervoltage, it ensures stable power management across various demanding applications. This technical guide provides detailed specifications, selection guides, and application data crucial for engineers developing devices like PCs, Set Top Boxes, and digital peripherals.
Page 1 Text Content
R5524N SERIES
USB HIGH-SIDE POWER SWITCH
NO.EA-188-111212
OUTLINE 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.
FEATURES • N-channel MOS High-Side switch IC • Switch ON Resistance ........................................Typ. 100mΩ (5V input) • Current Limit Threshold ........................................Min. 650m A (001A/B, 002A/B), Min.1.25A (004A) • Over-current Limit .................................................Min. 550m A • Flag Delay Time ....................................................Typ. 20ms. • Built-in under-voltage lockout circuit (UVLO) • Built-in Thermal Shutdown Circuit • Built-in Reverse current protection circuit • Package ................................................................SOT-23-5 • Built-in Soft-start Function
APPLICATIONS • PCs and PC peripherals • Digital Televisions (DTV) • Set Top Boxes (STB) • Printers • PDA • Game Consoles
Page Summary Contents For RICOH R5524N series Owner's Manual and User Guide
Manual Details
| Brand | Ricoh |
|---|---|
| Pages | 15 |
| File Size | 398.45 KB |
| Published | June 04, 2026 |
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Frequently Asked Questions
How do I select the correct over-current limit threshold for my design?
You must select the appropriate combination of protection type and Current Limit Threshold (e.g., 001A/B, 002A/B, or 004A) from the selection guide.