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PROTECTION PRODUCTS - RailClamp Description
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 RCLAMP3654P is specifically designed to protect portable devices that utilize the USB port for battery charging. The unique design of this device features low capacitance TVS diodes for protection of the USB data (DP, DM) and USB ID (accessory detect) pins operating up to 5 volts. Loading capacitance on these lines is <0.1pF 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 <100nA when operating at 28 volts. The RCLAMP3654P is in a 6-pin, RoHS compliant, SLP1616P6 package. It measures 1.6 x 1.6 x 0.60mm. 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).
RailClamp Low Capacitance TVS Array
Features
Transient protection for high-speed data lines to 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 (1.6 x 1.6mm) saves board space Protects USB DP, DM, and ID Pin operating up to 5.5V Protects USB VBus operating up to 28V Low capacitance (<1pF) on DP, DM, and ID Pins No insertion loss to 2.0GHz Low leakage current Low clamping voltage Large ground pad for increased ESD performance Solid-state silicon-avalanche technology
RCLAMP3654P
Mechanical Characteristics
SLP1616P6 6L package RoHS/WEEE Compliant Nominal Dimensions: 1.6 x 1.6 x 0.60 mm Lead Finish: NiPdAu Molding compound flammability rating: UL 94V-0 Marking : Marking code + two character date code Packaging : Tape and Reel
Applications
USB 2.0 USB OTG
Circuit Diagram
PIN Configuration
6
DM 1 DP
6
VBus NC NC
1
2
3 5.5V 28V
2 3
Gnd
5 4
USB ID
GND
SLP1616P6 (Top View)
Revision 07/18/2008 www.semtech.com
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RCLAMP3654P
PROTECTION PRODUCTS Absolute Maximum Rating
R ating D P, D M , U S B I D ( P i n s 1 , 2 , 3 ) Peak Pulse Power (tp = 8/20s) Peak Pulse Current (tp = 8/20s) ESD per IEC 61000-4-2 (Air) ESD per IEC 61000-4-2 (Contact) Operating Temperature Storage Temperature V B u s ( P i n 6) Peak Pulse Power (tp = 8/20s) Peak Pulse Current (tp = 8/20s) ESD per IEC 61000-4-2 (Air) ESD per IEC 61000-4-2 (Contact) Operating Temperature Storage Temperature Pp k IP P VESD TJ TSTG 350 4 15 8 -55 to +125 -55 to +150 Watts A kV C C Pp k IP P VESD TJ TSTG 100 3 15 8 -55 to +125 -55 to +150 Watts A kV C C Symbol Value Units
2008 Semtech Corp.
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RCLAMP3654P
PROTECTION PRODUCTS Electrical Characteristics (T = 25oC)
D M , D P, U S B I D T V S ( P i n s 1 , 2 , 3 ) Parameter Reverse Stand-Off Voltage Reverse Breakdown Voltage Reverse Leakage Current Forward Voltage Clamping Voltage Clamping Voltage Junction Capacitance Symbol VRWM V BR IR VF VC VC Cj Conditions Pin 1, 2, or 3 to GND It = 1mA, Pin 1, 2, or 3 to GND VRWM = 5.5V, Pin 1, 2, or 3 to GND If = 15mA GND to Pin 1, 2, or 3 IPP = 1A, tp = 8/20s Pin 1, 2, or 3 to GND IPP = 3A, tp = 8/20s Pin 1, 2, or 3 to GND VR = 0V, f = 1MHz, Pin 1, 2, or 3 to GND VR = 0V, f = 1MHz, Between I/O pins 0.8 0.6 6.5 8 0.100 Minimum Typical Maximum 5.5 10 1 1.2 15 30 0.95 0.5 Units V V A V V V pF pF
2008 Semtech Corp.
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RCLAMP3654P
PROTECTION PRODUCTS Electrical Characteristics (T = 25oC)
V B u s T V S ( P i n 6) Parameter Reverse Stand-Off Voltage Reverse Breakdown Voltage Reverse Leakage Current Forward Voltage Forward Clamping Voltage Clamping Voltage Junction Capacitance Symbol VRWM V BR IR VF VFC VC Cj Conditions Pin 6 to GND It = 1mA, Pin 6 to GND VRWM = 28V Pin 6 to GND If = 10mA GND to Pin 6 IPP = 10A, tp = 8/20s Ground to Pin 6 IPP = 1A, tp = 8/20s Pin 6 to Ground VR = 0V, f = 1MHz Pin 6 to GND 0.6 32 36 Minimum Typical Maximum 28 40 0.250 1.0 3 48 100 Units V V A V V V pF
2008 Semtech Corp.
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RCLAMP3654P
PROTECTION PRODUCTS Typical Characteristics
Non-Repetitive Peak Pulse Power vs. Pulse Time
10
110 100 90 80 70 60 50 40 30 20 10 0
Power Derating Curve
Peak Pulse Power - PPP (kW)
1
0.1
0.01 0.1 1 10 Pulse Duration - tp (us) 100 1000
% of Rated Power or IPP
0
25
50
75
100
125
150
Ambient Temperature - TA (oC)
Pulse Waveform
110 100 90 80 70 60 50 40 30 20 10 0 0 5 10 15 Time (s) 20 25 30 td = IPP/2
PP
Clamping Voltage vs. Peak Pulse Current (Pin 1, 2, or 3 to GND)
Waveform Parameters: tr = 8s td = 20s
40 35 Clamping Voltage - VC (V) 30 25 20 15 10 5 0 0 0.5 1 1.5 2 2.5 3 3.5 4 Peak Pulse Current - IPP (A) Waveform Parameters: tr = 8s td = 20s
Percent of I
e-t
Clamping Voltage vs. Peak Pulse Current (Pin 6 to GND)
70 60 Clamping Voltage - VC (V) 50 40 30 20 10 0 0 1 2 3 4 Peak Pulse Current - IPP (A) 5 6 Waveform Parameters: tr = 8s td = 20s
Reverse Clamping Voltage vs. Peak Pulse Current (Pin GND to Pin 6)
2 1.8 Forward Voltage - VF (V) 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 0 2 4 6 8 10 12 Peak Pulse Current - IPP (A)
2008 Semtech Corp.
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RCLAMP3654P
PROTECTION PRODUCTS Typical Characteristics
Normalized Capacitance vs. Reverse Voltage (Pin 1, 2, or 3 to Gnd)
2 1.8 1.6 1.4 CJ(VR) / CJ(VR=0) 1.2 1 0.8 0.6 0.4 0.2 0 0 1 2 3 Reverse Voltage - VR (V) 4 5
-12 dB -18 dB -24 dB -30 dB -36 dB -42 dB -48 dB 1 MHz START . 030 MHz 10 MHz 100 MHz 3 1 GHz GHz STOP 3000. 000000 MHz
Insertion Loss S21 (Pin 1, 2, or 3 to Gnd)
CH1 S21 LOG 6 dB / REF 0 dB 1: -0.086 dB 900 MHz
3
f = 1MHz
0 dB
1 2
2: -0.0336 dB 1.8 GHz 3: -0.126 dB 2.5 GHz
-6 dB
Analog Crosstalk
CH1 S21 LOG 20 dB/ REF 0 dB
START . 030 MHz
. STOP 3000 000000 MHz
2008 Semtech Corp.
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RCLAMP3654P
PROTECTION PRODUCTS Applications Information
Device Connection Options for Protecting One USB Port USB Data and ID lines are connected at pins 1, 2, and 3. 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 6 is connected to the USB voltage bus (VBus). This device will conduct when the voltage on the bus exceeds 28 volts. The center tab is connected to ground. The path length should also be kept as short as possible to minimize parasitic inductance. For best results, multiple micro-vias are recommended to the ground plane. Protecting USB Interfaces The RCLAMP3654P is optimized for use on systems that utilize the USB interface for battery charging. Low capacitance protection is provided for the USB data (DM, DP) and USB ID pins. The maximum capacitance on these lines is <1pF for maximum signal integrity. All three lines are referenced to an internal 5 volt TVS device. A separate 28 volt TVS device is used for protection of the USB voltage bus. This allows battery charging without signal clipping. A typical example is shown in Figure 2.
5 4 3 2 1
1
Figure 1- Pin Configuration & Circuit Diagram
6
1
2
3 5.5V 28V
GND
VBus DM DP USB ID GND
Mini USB Gnd
Figure 2 - USB Protection
2008 Semtech Corp.
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RCLAMP3654P
PROTECTION PRODUCTS Applications Information - Spice Model
VBus D2 I/O D1 D3 D4
RCLAMP3654P Spice Model
R Clamp3654P Spice Parameters Parameter IS BV VJ RS IB V CJO TT M N EG Unit Amp Volt Volt Ohm Amp Farad sec --eV D1 1E-20 100 0.7 0.458 1E-3 0.3E-12 2.541E-9 0.01 1.1 1.11 D2 1E-20 100 0.7 1.0 1E-3 0.3E-12 2.541E-9 0.01 1.1 1.11 D3 2E-12 9.36 0.6 2.6 1E-3 56E-12 2.541E-9 0.23 1.1 1.11 D4 2.93E-12 36 0.6 3.583 1E-3 50E-12 2.541E-9 0.32 1.1 1.11
2008 Semtech Corp.
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RCLAMP3654P
PROTECTION PRODUCTS Outline Drawing - SLP1616P6
B
A
D
PIN 1 INDICATOR (LASER MARK)
E
DIM
A A1 A2 b D D1 E E1 e L N aaa bbb
A aaa C A2 D1 12 LxN E1 N bxN e D/2 bbb E/2 A1 C
SEATING PLANE
.020 .023 .026 0.00 .001 .002 (.005) .008 .010 .012 .059 .063 .067 .041 .047 .051 .059 .063 .067 .010 .016 .020 .020 BSC .010 .013 .016 6 .003 .004
DIMENSIONS INCHES MILLIMETERS MIN NOM MAX MIN NOM MAX
0.50 0.58 0.65 0.00 0.03 0.05 (0.13) 0.20 0.25 0.30 1.50 1.60 1.70 1.05 1.20 1.30 1.50 1.60 1.70 0.25 0.40 0.50 0.50 BSC 0.25 0.33 0.40 6 0.08 0.10
CAB
NOTES:
1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS THE TERMINALS.
Land Pattern - SLP1616P6
P X
DIMENSIONS DIM C G H K P X Y Z INCHES .060 .035 .018 .051 .020 .012 .025 .085 MILLIMETERS 1.52 0.89 0.45 1.30 0.50 0.30 0.63 2.15
Z
G
H
(C)
Y K
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. 3. THERMAL VIAS IN THE LAND PATTERN OF THE EXPOSED PAD SHALL BE CONNECTED TO A SYSTEM GROUND PLANE. FAILURE TO DO SO MAY COMPROMISE THE THERMAL AND/OR FUNCTIONAL PERFORMANCE OF THE DEVICE.
2008 Semtech Corp.
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RCLAMP3654P
PROTECTION PRODUCTS Marking Ordering Information
Part Number Lead Finish Pb Free Qty per Reel 3,000 R eel Size 7 Inch
3654P
YW
YW = Two character Date Code
RClamp 3654P.TCT
RailClamp and RClamp are marks of Semtech Corporation
Tape and Reel Specification
Device Orientation in Tape Pin 1 in upper left towards sprocket holes
A0 1.78 +/-0.10 mm
B0 1.78 +/-0.10 mm
K0 0.69 +/-0.10 mm
Tape Width
B, (Max)
D
D1
E
F
K (MAX)
P
P0
P2
T(MAX)
W 8.0 mm + 0.3 mm - 0.1 mm
8 mm
4.2 mm
1.5 + 0.1 mm - 0.0 mm )
0.5 mm 0.05
1.750.10 mm
3.50.05 mm
2.4 mm
4.00.1 mm
4.00.1 mm
2.00.05 mm
0.4 mm
Contact Information
Semtech Corporation Protection Products Division 200 Flynn Rd., Camarillo, CA 93012 Phone: (805)498-2111 FAX (805)498-3804
2008 Semtech Corp. 10 www.semtech.com

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