RClamp0502N RailClamp® Low Capacitance TVS Diode Array PROTECTION PRODUCTS - RailClamp® Description Features ESD protection for high-speed data lines to The RailClamp® series is a family of ultra low capacitance TVS arrays designed to protect high speed data interfaces. This series has been specifically designed to protect sensitive components which are connected to high-speed data and transmission lines from overvoltage caused by ESD (electrostatic discharge), CDE (Cable Discharge Events), and EFT (electrical fast transients). They are designed for use in applications where board space is at a premium. Each device requires less than 1.2mm2 of PCB area and will protect up to two high speed data lines. The monolithic design incorporates surge rated, low capacitance steering diodes and a TVS diode in a single package. Each line has a typical capacitance of <0.5pF to ground. The capacitance of each line is well matched for consistant signal balance. A connection to the TVS is provided for protection of external voltage buses, such as those found in USB applications. This device is optimized for ESD protection of portable electronics. They may be used to meet the ESD immunity requirements of IEC 61000-4-2, Level 4 (±15kV air, ±8kV contact discharge). The RClamp0502N is in a 6-pin, RoHS/WEEE compliant, SLP1210N6 package. It measures 1.2 x 1.0 x 0.58mm. The small package makes it ideal for use in portable electronics such as cell phones, laptops, and digital still cameras. 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 two I/O lines and a power line Low capacitance: 0.3pF typical Low clamping voltage Solid-state silicon-avalanche technology Mechanical Characteristics SLP1210N6 Package RoHs/WEEE Compliant Nominal Dimensions: 1.2 x 1.0 x 0.58 mm Lead Pitch: 0.4mm Lead Finish: NiPdAu Marking : Marking Code Packaging : Tape and Reel Applications Circuit Diagram USB MMC Port Serial ATA Video Port Pin Configuration 6 1 4 5 VBus (Pin 6) NC (Pin 2) I/O 2 (Pin 5) NC (Pin 3) I/O 1 (Pin 4) SLP1210N6 package (Top Side View) Device Schematic Revision 09/19/2008 GND (Pin 1) 1 www.semtech.com RClamp0502N PROTECTION PRODUCTS Absolute Maximum Rating Rating Symbol Value Units Peak Pulse Power (tp = 8/20μs) Ppk 100 Watts Peak Pulse Current (tp = 8/20μs) IPP 3 A ESD per IEC 61000-4-2 (Air) ESD per IEC 61000-4-2 (Contact) VESD ±15 ±8 kV TJ -55 to +125 °C TSTG -55 to +150 °C Operating Temperature Storage Temperature Electrical Characteristics (T = 25oC) R Clamp0502N Parameter Symbol Conditions Reverse Stand-Off Voltage VRWM Pin 6 to GN D Reverse Breakdown Voltage V BR It = 1mA Pin 6 to GN D Reverse Leakage Current IR VRWM = 6.5V, T=25°C Pin 6 to GN D Forward Voltage VF If = 15mA Any I/O to pin 6 Clamping Voltage VC Clamping Voltage Junction Capacitance © 2008 Semtech Corp. Maximum Units 6.5 V 12 V 1 μA 1.2 V IPP = 1A, tp = 8/20μs Any I/O pin to Ground 16.5 V VC IPP = 3A, tp = 8/20μs Any I/O pin to Ground 30 V Cj VR = 0V, f = 1MHz Any I/O pin to Ground 0.3 0.5 pF VR = 0V, f = 1MHz Between I/O pins 0.3 0.5 pF 2 Minimum 7 Typical 9.5 0.9 www.semtech.com RClamp0502N PROTECTION PRODUCTS Typical Characteristics Non-Repetitive Peak Pulse Power vs. Pulse Time Power Derating Curve 110 100 90 % of Rated Power or PI P Peak Pulse Power - P Pk (kW) 10 1 0.1 80 70 60 50 40 30 20 10 0.01 0 0.1 1 10 100 0 1000 25 50 100 125 150 Foward Voltage vs. Forward Current Pin 1 to Pin 4, 5 40 8 35 7 Forward Voltage - V F V) Clamping Voltage - VC (V) Clamping Voltage vs. Peak Pulse Current I/O to Gnd - Pin 4, 5 to Pin 1 30 25 20 15 Waveform Parameters: tr = 8μs td = 20μs 10 5 6 5 4 3 Waveform Parameters: tr = 8μs td = 20μs 2 1 0 0 0 0.5 1 1.5 2 2.5 3 3.5 4 0 0.5 1 1.5 Peak Pulse Current - IPP (A) 2 2.5 3 3.5 4 Forward Current - IF (A) Normalize Capacitance vs. Reverse Voltage I/O to Gnd - Pin 4, 5 to Pin 1 Normalize Capacitance vs. Reverse Voltage I/O to I/O - Pin 4 to Pin 5 1.6 1.6 1.4 1.4 1.2 1.2 CJ(VR) / CJ(VR=0) CJ(VR) / CJ(VR=0) 75 Ambient Temperature - TA (oC) Pulse Duration - tp (µs) 1 0.8 0.6 1 0.8 0.6 0.4 0.4 0.2 0.2 f = 1 MHz f = 1 MHz 0 0 0 1 2 3 4 5 6 0 7 © 2008 Semtech Corp. 1 2 3 4 5 6 7 Reverse Voltage - VR (V) Reverse Voltage - VR (V) 3 www.semtech.com RClamp0502N PROTECTION PRODUCTS Applications Information Figure 1- Pin Configuration & Circuit Diagram Device Connection Options for Protection of Two HighSpeed Data Lines Data line inputs are normally connected at pins 4 & 5 with the outputs connected at pins 2 & 3. Pin 1 is connected to ground. Note that the circuit at the ground pin is identical to the circuit at each data input/output pin. This is done to further reduce capacitance. The connection to ground should be made directly to a ground plane. The path length should also be kept as short as possible to minimize parasitic inductance. Pin 6 can be connected to Vcc biased or left not connected depending upon the application. 6 1 Protecting USB 2.0 Interfaces 4 5 Figure 2 - USB 2.0 High Speed Protection The USB interface consists of Data (D- and D+) lines and a 5.25V voltage bus. Since these pins are part of the connector, they are vulnerable to ESD and cable discharge events. The RClamp0502N is designed to protect all four USB connections (VCC, D-, D+, and Gnd). Each device will protect one USB port. When the voltage on the data lines exceed the bus voltage (plus one diode drop), the internal rectifiers are forward biased conducting the transient current away from the protected controller chip. The TVS diode directs the surge to ground. The TVS diode also acts to suppress ESD strikes directly on the voltage bus. Thus, both power and data pins are protected with a single device. GND (Pin 1) VBus (Pin 6) NC (Pin 2) D+ or D- (Pin 5) NC (Pin 3) D+ or D- (Pin 4) USB Controller USB Connector Pin 1 DD+ Pin 6 Pin 2 Pin 5 Pin 3 Pin 4 Vbus DD+ Gnd © 2008 Semtech Corp. 4 www.semtech.com RClamp0502N PROTECTION PRODUCTS Applications Information - Spice Model I/O Figure 3 - RClamp0502N Spice Model RClamp0502N Spice Parameters Parameter Unit D1 (LCRD) D2 (LCRD) D3 (T VS) IS Amp 1.0E-20 1.0E-20 2E-12 BV Volt 100 100 9 VJ Volt 0 .7 0.7 0.6 RS O hm 0.458 1.0 2.6 IBV Amp 1.0 E-3 1.0 E-3 1.0 E-3 CJO Farad 0.4E-12 0.4E-12 56E-12 TT sec 2.541E-9 2.541E-9 2.541E-9 M -- 0.058 0.058 0.23 N -- 1.1 1.1 1.1 EG eV 1.11 1.11 1.11 © 2008 Semtech Corp. 5 www.semtech.com RClamp0502N PROTECTION PRODUCTS OutlineDrawing Drawing-SLP1210N6 - SO-8 Outline A B D DIMENSIONS INCHES MILLIMETERS DIM MIN NOM MAX MIN NOM MAX E PIN 1 INDICATOR (LASER MARK) A SEATING PLANE aaa C A2 A A1 A2 b D E e L N aaa bbb .020 .023 .026 0.00 .001 .002 (.005) .006 .008 .010 .043 .047 .051 .035 .039 .043 .016 BSC .012 .015 .017 6 .003 .004 0.50 0.58 0.65 0.00 0.03 0.05 (0.13) 0.15 0.20 0.25 1.10 1.20 1.30 0.90 1.00 1.10 0.40 BSC 0.30 0.38 0.425 6 0.08 0.10 C A1 D/2 1 2 LxN E/2 N bxN e bbb C A B NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). Land Pattern -SLP1210N6 P DIMENSIONS DIM C G P X Y Z Z (C) G Y X INCHES (.034) .008 .016 .008 .027 .061 MILLIMETERS (0.875) 0.20 0.40 0.20 0.675 1.55 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. © 2008 Semtech Corp. 6 www.semtech.com RClamp0502N PROTECTION PRODUCTS Marking Codes Ordering Information 0502N Part Number Qty per Reel Reel Size RClamp0502N.TCT 3,000 7 Inch RailClamp and RClamp are marks of Semtech Corporation Tape and Reel Specification Pin 1 Location User Direction of feed A0 1.21 ±0.10 mm B0 Device Orientation in Tape K0 1.41 ±0.10 mm 0.74 ±0.10 mm Tape Width B, (Max) D D1 8 mm 4.2 mm (.165) 1.5 + 0.1 mm - 0.0 mm (0.59 + .0 0 5 - .0 0 0 ) 0.8 mm ±0.05 (.031) E 1.750±.10 mm (.069±.004) F K (MAX) P P0 P2 T(MAX) W 3.5±0.05 mm (.138±.002) 2.4 mm ( .0 9 4 ) 4.0±0.1 mm (.157±.004) 4.0±0.1 mm (.157±.004) 2.0±0.05mm (.079±.002) 0.4 mm (.016) 8.0 mm + 0.3 mm - 0.1 mm (.312±.012) Contact Information Semtech Corporation Protection Products Division 200 Flynn Road, Camarillo, CA 93012 Phone: (805)498-2111 FAX (805)498-3804 © 2008 Semtech Corp. 7 www.semtech.com