RClamp3655P RailClamp ESD Protection for uUSB Interfaces PROTECTION PRODUCTS - RailClamp Description Features Transient protection for high-speed data lines to RailClamp is a low capacitance TVS array designed to protect high speed data interfaces. This series has been specifically designed to protect sensitive components which are connected to data and transmission lines from overvoltage caused by ESD (electrostatic discharge), CDE (Cable Discharge Events), and EFT (electrical fast transients). The RClamp3655P is specifically designed to protect portable devices that utilize a uUSB port with an additional FM radio pin. The unique design of this device features low capacitance TVS diodes for protection of the USB data (DP, DM), USB ID, and FM radio pins operating up to 5 volts. Loading capacitance on these lines is <1pF for maximum signal integrity. An integrated 28 volt TVS diode is used for protection of the USB voltage bus. This ensures the device will remain in a high-impedance state during normal USB operation or when the battery is being charged. Leakage current of the VBus protection is <250nA when operating at 28 volts. The RClamp3655P is in an 8-pin, RoHS compliant, SLP3313P6 package. It measures 3.3 x 1.3 x 0.50mm. The leads are spaced at a pitch of 0.5mm and are finished with lead-free NiPdAu. They may be used to meet the ESD immunity requirements of IEC 61000-4-2, Level 4 (15kV air, 8kV contact discharge). IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact) IEC 61000-4-4 (EFT) 40A (5/50ns) Array of surge rated diodes with internal TVS Diode Small package saves board space Protects USB DP, DM, FM radio, and ID Pins to 5V Protects USB VBus operating up to 28V Low capacitance (<1pF) on DP, DM, FM and ID Pins No insertion loss to 2.0GHz Low leakage current Low clamping voltage Innovative package for easy pcb layout Solid-state silicon-avalanche technology Mechanical Characteristics SLP3313P6 8L package RoHS/WEEE Compliant Nominal Dimensions: 3.3 x 1.3 x 0.50 mm Lead Finish: NiPdAu Molding compound flammability rating: UL 94V-0 Marking: Marking code Packaging: Tape and Reel Applications uUSB Interfaces with FM radio Option USB OTG Circuit Diagram PIN Configuration VBus VBat 1 1 GND Data 3 4 5 6 5V Data + 28V ID GND FM Radio GND SLP3313P6 (Top View) Revision 07/15/2009 1 www.semtech.com RClamp3655P PROTECTION PRODUCTS Absolute Maximum Rating R ating Symbol Value Units Peak Pulse Power (tp = 8/20µs) Pp k 75 Watts Peak Pulse Current (tp = 8/20µs) IP P 5 A ESD per IEC 61000-4-2 (Air) ESD per IEC 61000-4-2 (Contact) VESD ±18 ±12 kV TJ -55 to +125 °C TSTG -55 to +150 °C Peak Pulse Power (tp = 8/20µs) Pp k 350 Watts Peak Pulse Current (tp = 8/20µs) IP P 4 A ESD per IEC 61000-4-2 (Air) ESD per IEC 61000-4-2 (Contact) VESD ±18 ±12 kV TJ -55 to +125 °C TSTG -55 to +150 °C D P, D M , U S B I D , F M R a d i o ( P i n s 3 , 4 , 5 , 6 ) Operating Temperature Storage Temperature V B u s ( P i n 1) Operating Temperature Storage Temperature 2009 Semtech Corp. 2 www.semtech.com RClamp3655P PROTECTION PRODUCTS Electrical Characteristics (T = 25oC) D M , D P, U S B I D , F M R a d i o ( P i n s 3 , 4 , 5 , 6 ) Parameter Symbol Conditions Reverse Stand-Off Voltage VRWM Pin 3, 4, 5, or 6 to GN D Reverse Breakdown Voltage V BR It = 1mA, Pin 3, 4, 5, or 6 to GN D Reverse Leakage Current IR VRWM = 5.0V, Pin 3, 4, 5, or 6 to GN D Forward Voltage VF If = 15mA GN D to Pin 3, 4, 5, or 6 Clamping Voltage VC Clamping Voltage Junction Capacitance Maximum Units 5 V 8 11 V 0.005 0.100 µA 1.2 V IPP = 1A, tp = 8/20µs Pin 3, 4, 5, or 6 to GN D 12 V VC IPP = 5A, tp = 8/20µs Pin 3, 4, 5, or 6 to GN D 15 V Cj VR = 0V, f = 1MHz, Pin 3, 4, 5, or 6 to GN D 0.80 pF 0.4 pF VR = 0V, f = 1MHz, Between I/O pins 2009 Semtech Corp. 3 Minimum 6.5 Typical 0.6 0.7 www.semtech.com RClamp3655P PROTECTION PRODUCTS Electrical Characteristics (T = 25oC) V B u s T V S ( P i n 1) Parameter Symbol Conditions Reverse Stand-Off Voltage VRWM Pin 1 to GN D Reverse Breakdown Voltage V BR It = 1mA, Pin 1 to GN D Reverse Leakage Current IR VRWM = 28V Pin 1 to GN D Forward Voltage VF If = 10mA GN D to Pin 1 Forward Clamping Voltage VFC Clamping Voltage Junction Capacitance 2009 Semtech Corp. Maximum Units 28 V 36 40 V 0.010 0.250 µA 1.0 V IPP = 10A, tp = 8/20µs Ground to Pin 1 3 V VC IPP = 1A, tp = 8/20µs Pin 1 to Ground 48 V Cj VR = 0V, f = 1MHz Pin 1 to GN D 40 pF 4 Minimum 32 Typical 0.6 28 www.semtech.com RClamp3655P PROTECTION PRODUCTS Typical Characteristics Non-Repetitive Peak Pulse Power vs. Pulse Time (Data Lines - Pins 3, 4, 5, or 6 to GND) Pulse Waveform 110 10 Waveform Parameters: tr = 8µs td = 20µs 90 80 PP 1 Percent of I Peak Pulse Power - P PP (kW) 100 0.1 70 e-t 60 50 40 td = IPP/2 30 20 10 0 0.01 0.1 1 10 0 100 5 Pulse Duration - tp (us) 10 15 20 25 30 Time (µs) Clamping Voltage vs. Peak Pulse Current (Data Lines - Pins 3, 4, 5, or 6 to GND) Clamping Voltage vs. Peak Pulse Current (VBus - Pin 1 to GND) 70 16 60 Clamping Voltage - VC (V) Clamping Voltage - VC (V) 14 12 10 8 6 Waveform Parameters: tr = 8µs td = 20µs 4 2 50 40 30 20 Waveform Parameters: tr = 8µs td = 20µs 10 0 0 0 1 2 3 4 Peak Pulse Current - IPP (A) 5 0 6 Normalized Capacitance vs. Reverse Voltage (Data Lines - Pin 3, 4, 5, or 6 to GND) 1 2 3 4 Peak Pulse Current - IPP (A) 5 6 USB 2.0 Eye Pattern with RClamp3655P (Data Lines - Pin 3 and 4) 2 f = 1MHz 1.8 1.6 CJ(VR) / CJ(VR=0) 1.4 1.2 1 0.8 0.6 0.4 0.2 0 0 1 2009 Semtech Corp. 2 3 Reverse Voltage - VR (V) 4 5 5 www.semtech.com RClamp3655P PROTECTION PRODUCTS Typical Characteristics Insertion Loss S21 (Pin 3, 4, 5, or 6 to GND) CH1 S21 LOG Analog Crosstalk CH1 S21 6 dB / REF 0 dB LOG 20 dB /REF 0 dB 1: -0.1508 dB 800 MHz 5 0 dB 12 3 2: -0.1454 dB 900 MHz 4 -6 dB 3: -0.2975 dB 1.8 GHz -12 dB 4: -0.8588 dB 2.5 GHz -18 dB -24 dB -30 dB -36 dB 1 MHz 10 MHz 100 MHz START . 030 MHz 3 1 GHz GHz STOP 3000. 000000 MHz START . 030 MHz ESD Clamping (Pin 3, 4, 5, or 6 to GND) (+8kV Contact per IEC 61000-4-2) ESD Clamping (Pin 1 to GND) (+8kV Contact per IEC 61000-4-2) Note: Data is taken with a 10x attenuator 2009 Semtech Corp. STOP 3000. 000000 MHz Note: Data is taken with a 10x attenuator 6 www.semtech.com RClamp3655P PROTECTION PRODUCTS Applications Information Figure 1- Pin Configuration Device Connection and Layout Options for Protecting One USB Port The RClamp3655P is optimized for use on systems that utilize the uUSB interface with an additional FM radio pin. Low capacitance protection is provided for the USB data (DM, DP), USB ID, and FM radio pins. The maximum capacitance on these lines is <1pF for maximum signal integrity. USB Data, FM radio, and ID lines are connected at pins 3, 4, 5, and 6. These inputs are referenced to an internal 5 volt TVS protection device. When the voltage on these lines exceed 5 volts, the TVS will conduct. Pin 1 is connected to the USB voltage bus (VBus). This device will conduct when the voltage on the bus exceeds 28 volts. Note that there is no internal connection to the VBat pin. Multiple micro vias connected to ground are recommended for best ESD performance. This will reduce parasitic inductance in the ground path and minimize the clamping voltage seen by the protected device. The package is designed for easy trace routing as shown in the Figure 2 examples. The top example is preferred as it utilizes an extended ground connection using multiple micro vias. Note that it is not necessary to connect both ground pins of the device as both are connected internally. In this example, the VBat pin is routed on a separate layer. The VBus pin is connected to the voltage layer of the PCB with a micro via. If connection to the VBat pin is required, the bottom layout can be used. This example utilizes one via to ground due to space constraints. 2009 Semtech Corp. VBus VBat 1 GND Data Data + ID GND FM Radio Figure 2 - Layout Examples 7 www.semtech.com RClamp3655P PROTECTION PRODUCTS Applications Information - Spice Model VBus D2 D4 D3 I/O D1 RClamp3655P Spice Model R Clamp3655P Spice Parameters Parameter Unit D1 D2 D3 D4 IS Amp 1E-20 1E-20 2E-12 2.93E-12 BV Volt 100 100 8.2 35 VJ Volt 0.83 0.83 0.6 0.64 RS Ohm 1.5 0.6 0.2 4.13 IB V Amp 1E-3 1E-3 1E-3 1E-3 CJO Farad 0.25E-12 0.25E-12 56E-12 25E-12 TT sec 2.541E-9 2.541E-9 2.541E-9 2.541E-9 M -- 0.01 0.01 0.23 0.32 N -- 1.1 1.1 1.1 1.1 EG eV 1.11 1.11 1.11 1.11 2009 Semtech Corp. 8 www.semtech.com RClamp3655P PROTECTION PRODUCTS Outline Drawing - SLP3313P6 A D DIMENSIONS MILLIMETERS MIN NOM MAX A 0.45 0.50 0.55 A1 0.00 0.02 0.05 (0.13) A2 b 0.20 0.25 0.30 D 3.25 3.30 3.38 E 1.25 1.30 1.38 e 0.50 BSC e1 1.25 BSC L 0.30 0.38 0.43 L1 0.54 0.62 0.67 6 N aaa 0.08 0.10 bbb B DIM PIN 1 INDICATOR (LASER MARK) E A SEATING PLANE aaa C A2 C A1 D/2 e/2 e 1 6 LxN E/2 L1x2 8 7 bx8 e1/2 bbb C A B e1 NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS THE TERMINALS. Land Pattern - SLP3313P6 P1 P1/2 Y1 (C) Z G Y DIM C G P P1 X Y Y1 Z DIMENSIONS MILLIMETERS (1.05) 0.25 0.50 1.25 0.30 0.68 0.92 1.85 X P/2 P NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. 2009 Semtech Corp. 9 www.semtech.com RClamp3655P PROTECTION PRODUCTS Marking Ordering Information 3655P YYWW Part Number Lead Finish Qty per Reel R eel Size RClamp 3655P.TCT Pb Free 3,000 7 Inch RailClamp and RClamp are marks of Semtech Corporation YYWW = Date Code Tape and Reel Specification Pin 1 Location User Direction of feed Device Orientation in Tape Pin 1 in upper left towards sprocket holes A0 1.51 +/-0.10 mm B0 K0 3.51 +/-0.10 mm Tape Width B, (Max) D 8 mm 4.2 mm 1.5 + 0.1 mm - 0.0 mm ) 0.66 +/-0.10 mm D1 E 0.5 mm ±0.05 1.750±.10 mm F K (MAX) P P0 P2 T(MAX) 3.5±0.05 mm 2.4 mm 4.0±0.1 mm 4.0±0.1 mm 2.0±0.05 mm 0.4 mm W 8.0 mm + 0.3 mm - 0.1 mm Contact Information Semtech Corporation Protection Products Division 200 Flynn Rd., Camarillo, CA 93012 Phone: (805)498-2111 FAX (805)498-3804 2009 Semtech Corp. 10 www.semtech.com