R5524x Series USB HIGH-SIDE POWER SWITCH / LOAD SWITCH NO.EA-188-200930 OUTLINE The R5524x is a CMOS-based high-side MOSFET switch IC which conforms to the universal serial bus (USB) standard. It can also be used as a load switch IC with protection function. By using an Nch MOSFET with low On-resistance (Typ. 100 m) 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 and a 6-pin DFN(PLP)1820-6 package which achieve the smallest possible footprint solution on boards where area is limited. FEATURES N-channel MOS High-Side Switch IC Switch ON Resistance Typ. 100 m at 5 V Input (1) (2) Current Limit Threshold Min. 650 mA , Min. 1.25 A Overcurrent Limit Min. 550 mA Flag Delay Time Typ. 20 ms Under-voltage Lockout (UVLO) Circuit Thermal Shutdown Circuit Reverse Current Protection Circuit (3) Package SOT-23-5, DFN(PLP)1820-6 APPLICATIONS PCs and PC Peripherals Digital Televisions (DTV) Set Top Boxes (STB) Printers PDA Game Consoles (1) Only for R5524x001A/B, R5524x002A/B (2) Only for R5524N004A (3) Only for R5524K001x, R5524K002x 1 R5524x NO.EA-188-200930 SELECTION GUIDE (1) The overcurrent limit protection type, the current limit threshold and the auto discharge options for the ICs are user-selectable options. Selection Guide Product Name Package Quantity per Reel Pb Free Halogen Free SOT-23-5 3,000 pcs Yes Yes R5524N00x-TR-FE R5524K00x-TR DFN(PLP)1820-6 5,000 pcs Yes Yes x: Specify the combination of Overcurrent Limit Protection type and Current Limit Threshold. 1: Latch-off Type, Current Limit Threshold: Min. 650 mA 2: Constant Current Type, Current Limit Threshold: Min. 650 mA (2) 4: Cosntant Current Type, Current Limit Threshold: Min. 1.25 A : Specify auto-discharge options. A: Auto-discharge included B: Auto-discharge not included (1) Auto-discharge function quickly lowers the output voltage to 0 V, when the chip enable signal is switched from the active mode to the standby mode, by releasing the electrical charge accumulated in the external capacitor. (2) Only for R5524N004A 2