EClamp2122S USB Downstream Port Filter & TVS For EMI Filtering and ESD Protection PROTECTION PRODUCTS - EMIClamp Features Description The EClamp 2122S is combination EMI filter and line EMI/RFI filtering and line termination with inte- termination device with integrated TVS diodes for use grated ESD protection on USB interfaces. This device utilizes solid-state ESD protection for USB power (V ) and data lines BUS silicon-avalanche technology for superior clamping (D+ & D-) to IEC 61000-4-2 (ESD), 25kV (air), performance and DC electrical characteristics. They 20kV (contact) have been optimized for protection of USB inter-protection of USB inter-protection of USB inter-protection of USB inter-protection of USB inter- Filtering and termination for two USB data lines facesfacesfacesfacesfaces in cellular phones and other portable electron- Series resistors for impedance matching ics. Integrated pull down resistors as required by the USB line termination is achieved with a series 22 USB specification for downstream ports resistor on both the D+ and D- USB lines. These Low TVS operating voltage (5.25V) resistors preserve signal integrity by matching the cable Solid-state technology impedance to that of the differential driver. The 15k pull-down resistors complete the termination circuit on Mechanical Characteristics each line. They are required by the USB specification JEDEC SOT-23 6L package to identify the line as a downstream connection. The Pb-Free, Halogen Free, RoHS/WEEE Compliant capacitors are used to bypass high frequency energy to ground and for edge rate control of the USB signals. Nominal Dimensions: 2.9 x 2.8mm Integrated TVS diodes provide ESD protection of both Molding compound flammability rating: UL 94V-0 (D+ & D-) data lines and the voltage bus (V ). The Marking: Marking Code + Date Code BUS TVS diodes provide effective suppression of ESD Packaging: Tape and Reel voltages in excess of 25kV (air discharge) and 20kV (contact discharge) per IEC 61000-4-2. Applications The EClamp2122S is in a 6-pin SOT-23 package. The USB 1.1 Interfaces leads are finished with lead-free matte tin. It is suit- USB Hubs able for use in USB hubs, computers, peripherals, and Printers portable devices Monitors Servers, Desktop, and Notebook computers Circuit Diagram Pin Configuration C1 C2 C1 C2 (Top Side View) www.semtech.com Revision 5/26/2011 1EClamp2122S PROTECTION PRODUCTS Absolute Maximum Rating Rlating Seymbo Vsalu Unit SPteady-State Power 1W00 m SS ESD Air Discharge per IEC 61000-4-2 V 25 kV ESD ESD Contact Discharge per IEC 61000-4-2 20 LLead Soldering Temperature T)2C60 (10 sec. OTperating Temperature -C40 to +125 J STtorage Temperature -C55 to +150 STG o Electrical Characteristics (T = 25 C) PlarameterSsymboCmondition MlinimuTmypicaMsaximu Unit TVVS Reverse Stand-Off Voltage 5V.25 RWM TVVS Reverse Breakdown Voltage I=61mA V BR t TIVS Reverse Leakage Current V = 5.25V, T=25C 5 A R RWM Pin 1 to 6 SReries Resistance E0ach Line 22242 S PRulldown Resistance E5ach Line 153. 151k6. PD CVlamping Voltage I = 3A, tp = 8/20s 1V1 C PP Pin 2 or Pin 3 to Pin 6 TCVS Diode Capacitance Each Line 207 333Fp V = 0V, f = 1MHz R TCotal Capacitance Between Input or Output 5F0 p TOT to Ground V = 0V, f = 1MHz R www.semtech.com 2011 Semtech Corp. 2