R5524x Series USB HIGH-SIDE POWER SWITCH NO.EA-188-161207 OUTLINE 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. 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 Current Limit Threshold ************************************* Min. 650 mA*1, Min. 1.25 A*2 Overcurrent Limit********************************************** Min. 550 mA Flag Delay Time *********************************************** Typ. 20 ms Under-voltage Lockout (UVLO) Circuit Thermal Shutdown Circuit Reverse Current Protection Circuit Package ********************************************************* SOT-23-5, DFN(PLP)1820-6*3 APPLICATIONS PCs and PC Peripherals Digital Televisions (DTV) Set Top Boxes (STB) Printers PDA Game Consoles *1 only for R5524x001A/B, R5524x002A/B only for R5524N004A *3 only for R5524K001x, R5524K002x *2 1 R5524x NO.EA-188-161207 BLOCK DIAGRAMS R5524xxxxA Block Diagram V OUT V IN GATE CONTROL EN UVLO CURRENT LIMIT FLG DELAY FLG THERMAL SHUTDOWN GND R5524xxxxB Block Diagram V OUT V IN GATE CONTROL EN UVLO CURRENT LIMIT FLG DELAY FLG THERMAL SHUTDOWN GND 2 R5524x NO.EA-188-161207 SELECTION GUIDE The overcurrent limit protection type, the current limit threshold and the auto discharge options*1 for the ICs are user-selectable options. Selection Guide Product Name Package Quantity per Reel Pb Free Halogen Free R5524N00x-TR-FE SOT-23-5 3,000 pcs Yes Yes DFN(PLP)1820-6 5,000 pcs Yes Yes R5524K00x-TR 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 4: Cosntant Current Type, Current Limit Threshold: Min. 1.25 A*2 : 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 PIN DESCRIPTIONS 5 1 4 2 3 SOT-23-5 Pin Configuration SOT23-5 Pin Description Pin No. Symbol Description 1 VIN 2 GND 3 EN Chip Enable Pin, Active-high 4 FLG Flag Pin, Open Drain Output 5 VOUT Output Pin Input Pin Ground Pin 3 R5524x NO.EA-188-161207 Top View 6 5 Bottom View 4 4 5 6 *1 1 2 3 3 2 DFN(PLP)1820-6 Pin Configuration DFN(PLP)1820-6 Pin Description Pin No. Symbol 1 VOUT 2 NC No Connection 3 FLG Flag Pin, Open Drain Output 4 EN Enable Pin, Active-high 5 GND 6 VIN *1 The Description Output Pin Ground Pin Input Pin tab on the bottom of the package enhances thermal performance and is electrically connected to GND (substrate level). It is recommended that the tab be connected to the ground plane on the board, or otherwise be left floating. 4 R5524x NO.EA-188-161207 ABSOLUTE MAXIMUM RATINGS Absolute Maximum Ratings Symbol Rating Unit 6.0 V VIN Input Voltage VEN Enable Pin Input Voltage -0.3 to 6.0 V VFLG Flag Pin Voltage -0.3 to 6.0 V IFLG Flag Pin Current 14 mA VOUT Output Pin Voltage -0.3 to 6.0 V IOUT Output Current PD Power Dissipation (Standard Land Pattern)*1 Ta Tstg *1 Item Internally Controlled SOT-23-5 420 mW DFN(PLP)1820-6 880 mW Operating Temperature Range -40 to 85 C Storage Temperature Range -55 to 125 C Refer to PACKAGE INFORMATION for detailed information. ABSOLUTE MAXIMUM RATINGS Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the permanent damages and may degrade the life time and safety for both device and system using the device in the field. The functional operation at or over these absolute maximum ratings is not assured. 5 R5524x NO.EA-188-161207 ELECTRICAL CHARACTERISTICS The specifications surrounded by are guaranteed by design engineering at -40C Ta 85C. Electrical Characteristics Symbol Item VIN IDD1 IDD2 RON ton toff VUVLO VHYS ITH Input Voltage Supply Current (Active Mode) Supply Current (Standby Mode) Switch On Resistance Output Turn-on Delay Output Turn-off Delay UVLO Release Voltage UVLO Hysteresis Range Current Limit Threshold ILIM Overcurrent Limit tFD Flag Delay Time*1 TTSD TTSR IEN VEN1 VEN2 ILO VLF IFOF IREV RLOW (Ta = 25C) Conditions Thermal Shutdown Temperature Thermal Shutdown Released Temperature Enable Pin Input Current Enable Pin Input Voltage 1 Enable Pin Input Voltage 2 Output Leakage Current Flag "L" Output Voltage Flag Off Current Reverse Leakage Current Nch. On-resistance for Auto Discharge (R5524x00xA) Min. Typ. Max. Unit 5.5 V 110 0.1 100 400 50 2.5 0.1 180 1.0 150 A A m s s V V 650 800 980 1.25 1.55 1.85 1.2 1.55 1.9 550 650 800 mA 7 20 30 ms 2.7 VOUT = OPEN, EN = "H", VIN = 5 V VOUT = OPEN, EN = "L", VIN = 5 V VIN = 5 V, IOUT = 500 mA VIN = 5 V, RL = 60 VIN = 5V, RL = 60 VIN Rising VIN Falling R5524x001A/ 001B VIN = 5 V R5524x002A/ 002B VIN = 5 V R5524N004A VIN = 5 V, Ta = 0 to 70C VIN = 5 V, VOUT = 0 V, after 5 ms VIN = 5 V, starts when overcurrent is detected and ends when FLG = "L" 2.3 2.7 mA A Junction Temperature 135 C Junction Temperature 120 C 0.01 VEN Rising VEN Falling 2.0 -0.3 0.1 ISINK = 1 mA VFLG = 5.5 V VIN = 0 V, VOUT = 5.5 V 0.01 450 1.0 6.0 0.8 1.0 0.4 1.0 50 A V V A V A A All test items listed under Electrical Characteristics are done under the pulse load condition (Tj Ta = 25C) except Thermal Shutdown Temperature and Thermal Shutdown Released Temperature. *1 Flag Delay Time is dependent on Input Voltage. RECOMMENDED OPERATING CONDITIONS (ELECTRICAL CHARACTERISTICS) All of electronic equipment should be designed that the mounted semiconductor devices operate within the recommended operating conditions. The semiconductor devices cannot operate normally over the recommended operating conditions, even if when they are used over such conditions by momentary electronic noise or surge. And the semiconductor devices may receive serious damage when they continue to operate over the recommended operating conditions. 6 R5524x NO.EA-188-161207 TYPICAL APPLICATION VIN 10 k ~ 100 k VIN VIN *1 Over Current 4 FLG 1 R5524x USB Host Controller 3 ON/OFF EN GND VOUT 5 VOUT USB Client VBUS Device 2 1 F 47 F *2 R5524x Typical Application *1 FLG pin is Nch. Open Drain Output. *2 A 47 F or more output capacitor is recommended. According to a USB standard, a 120 F or more output capacitor is required. TECHNICAL NOTES Bypass Capacitor A 0.1F to 1 F bypass capacitor between the VIN pin and the GND pin, close to the device, is recommended. This precaution reduces power supply transients that may cause ringing on the input. Pull-up Resistor of FLG Pin A 10 k to 100 k pull-up resistor is recommended for the FLG pin. R5524x001A/001B The R5524x001A/001B is equipped with a latch-off function which requires initialization before start-up. Case 1: Start-up by EN Pin Control EN pin must be enabled with the delay of 10 s or more against 90% of VIN voltage rising edge. Case 2: Start-up by EN Pin Tied to VIN Pin Slew rate of VIN must be 40 s/V or slower. 7 R5524x NO.EA-188-161207 TIMING CHART Output On-time and Output Off-time tOFF tON 50% VEN 50% 90% 10% VOUT R5524x Timing Chart Flag Delay Time ITH (1) ILIM (2) (4) (3)