SEMTECH RCLAMP3655P

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
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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
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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
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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
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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
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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
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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
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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.
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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.
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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.
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