RClamp1644T Low Capacitance RClamp ESD Protection for uUSB Interfaces PROTECTION PRODUCTS PRELIMINARY PROTECTION PRODUCTS - RailClamp Features Description RailClamp is a low capacitance TVS array designed to ESD protection for high-speed data lines to protect high speed data interfaces. This series has IEC 61000-4-2 (ESD) 25kV (air), 20kV (contact) been specifically designed to protect sensitive compo- IEC 61000-4-5 (Lightning) 10A (8/20 s) nents which are connected to data and transmission IEC 61000-4-4 (EFT) 40A (5/50ns) lines from overvoltage caused by ESD (electrostatic Protects USB DP, DM, and ID Pin operating to 5V discharge), CDE (Cable Discharge Events), and EFT Protects USB VBus operating up to 12V (electrical fast transients). Low capacitance (<0.60pF) on DP, DM, and ID Pins The RClamp1644T is specifically designed to protect Low clamping voltage portable devices that utilize a uUSB port. The unique Extremely low dynamic resistance: 0.33 Ohms (Typ) design of this device features low capacitance TVS on DP, DM, and ID Pins diodes for protection of the USB data (DP, DM) and Innovative flow-through design allows easy pcb USB ID pins operating up to 5 volts. Loading capaci- layout tance on these lines is <0.6pF for maximum signal Solid-state silicon-avalanche technology integrity. An integrated 12 volt TVS diode is used for protection of the USB voltage bus. This ensures the Mechanical Characteristics device will remain in a high-impedance state during SLP1508N5T 5L package normal USB operation or when the battery is being Pb-Free, Halogen Free, RoHS/WEEE Compliant charged. Leakage current of the VBus protection is Nominal Dimensions: 1.5 x 0.8 x 0.40 mm <50nA when operating at 12 volts. Lead Finish: NiPdAu The RClamp1644T is in a 6-pin SLP1508N5T package. Molding compound flammability rating: UL 94V-0 It measures 1.5 x 0.8 x 0.40mm. The leads are Marking : Marking code + date code spaced at a pitch of 0.35mm and are finished with Packaging : Tape and Reel lead-free NiPdAu. They may be used to meet the ESD immunity requirements of IEC 61000-4-2. Applications USB 2.0 USB OTG Micro USB Circuit Diagram Pin Configuration VBus 1 1 DM 2 GND 23 4 DP 5V 12V ID 5 SLP (Top View) www.semtech.com Revision 4/12/2012 1RClamp1644T PROTECTION PRODUCTS PRELIMINARY Absolute Maximum Rating Rlating Seymbo Vsalu Unit DDDDDDDPPPPP,,,,, DDDDDMMMMM,,,,, UUUUUSSSSSBBBBB IIIIIDDD PPeak Pulse Power (tp = 8/20s) 7s5 Watt pk PIeak Pulse Current (tp = 8/20s) 5A PP ESD per IEC 61000-4-2 (Air) V 25 kV ESD ESD per IEC 61000-4-2 (Contact) 20 OTperating Temperature -C55 to +125 J STtorage Temperature -C55 to +150 STG VSVVVVSBBBBBuuuuusssss TTTTTVVVVVSSS PPeak Pulse Power (tp = 8/20s) 3s00 Watt pk PIeak Pulse Current (tp = 8/20s) 1A0 PP ESD per IEC 61000-4-2 (Air) V 30 kV ESD ESD per IEC 61000-4-2 (Contact) 30 OTperating Temperature -C55 to +125 J STtorage Temperature -C55 to +150 STG VVSVSVBBBBuuuussss TTTTVVVVSS VBus T VS Plarameter SsymboCmondition MlinimuTmypicaMsaximu Unit RVeverse Stand-Off Voltage P2in 1 to GND 1V RWM RVeverse Breakdown Voltage I = 1mA, 155 186. 1V BR t Pin 1 to GND RIeverse Leakage Current V = 12V 00.005 0A.10 R RWM Pin 1 to GND FVorward Voltage I = 10mA00.6 1V. F f GND to Pin 1 CVlamping Voltage I = 10A, tp = 8/20s 3V0 C PP Pin 1 to Ground FVorward Clamping Voltage I = 10A, tp = 8/20s 3V FC PP Ground to Pin 1 JCunction Capacitance V = 0V, f = 1MHz 555 7Fp j R Pin 1 to GND www.semtech.com 2012 Semtech Corporation 2